2001-02-13 00:15:38 +01:00
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/* Common subexpression elimination library for GNU compiler.
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Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
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1999, 2000, 2001 Free Software Foundation, Inc.
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Makefile.in, [...]: replace "GNU CC" with "GCC".
* Makefile.in, alias.c, basic-block.h, bb-reorder.c, bitmap.c,
bitmap.h, builtin-types.def, builtins.c, builtins.def,
c-aux-info.c, c-common.c, c-common.def, c-common.h,
c-convert.c, c-decl.c, c-dump.c, c-dump.h, c-errors.c,
c-format.c, c-lang.c, c-lex.c, c-lex.h, c-parse.in,
c-pragma.c, c-pragma.h, c-semantics.c, c-tree.h, c-typeck.c,
caller-save.c, calls.c, collect2.c, collect2.h, combine.c,
conditions.h, config.gcc, configure.frag, configure.in,
conflict.c, convert.c, convert.h, cppspec.c, crtstuff.c,
cse.c, cselib.c, cselib.h, dbxout.c, dbxout.h, defaults.h,
dependence.c, df.c, df.h, diagnostic.c, diagnostic.h,
doloop.c, dominance.c, dwarf.h, dwarf2.h, dwarf2asm.c,
dwarf2asm.h, dwarf2out.c, dwarf2out.h, dwarfout.c,
emit-rtl.c, errors.c, errors.h, except.c, except.h,
exgettext, explow.c, expmed.c, expr.c, expr.h, final.c,
fixproto, flags.h, flow.c, fold-const.c, fp-test.c,
function.c, function.h, gbl-ctors.h, gcc.c, gcc.h, gcc.hlp,
gccspec.c, gcov-io.h, gcse.c, genattr.c, genattrtab.c,
gencheck.c, gencodes.c, genconfig.c, genemit.c,
genextract.c, genflags.c, gengenrtl.c, genmultilib,
genopinit.c, genoutput.c, genpeep.c, genrecog.c,
gensupport.c, gensupport.h, ggc-callbacks.c, ggc-common.c,
ggc-none.c, ggc-page.c, ggc-simple.c, ggc.h, global.c,
graph.c, graph.h, gthr-aix.h, gthr-dce.h, gthr-posix.h,
gthr-rtems.h, gthr-single.h, gthr-solaris.h, gthr-vxworks.h,
gthr-win32.h, gthr.h, haifa-sched.c, halfpic.c, halfpic.h,
hard-reg-set.h, hwint.h, ifcvt.c, input.h, insn-addr.h,
integrate.c, integrate.h, jump.c, lcm.c, libgcc2.c,
libgcc2.h, lists.c, local-alloc.c, loop.c, loop.h,
machmode.def, machmode.h, main.c, mbchar.c, mbchar.h,
mips-tdump.c, mips-tfile.c, mklibgcc.in, mkmap-flat.awk,
mkmap-symver.awk, optabs.c, output.h, params.c, params.def,
params.h, predict.c, predict.def, predict.h, prefix.c,
prefix.h, print-rtl.c, print-tree.c, profile.c, protoize.c,
read-rtl.c, real.c, real.h, recog.c, recog.h, reg-stack.c,
regclass.c, regmove.c, regrename.c, regs.h, reload.c,
reload.h, reload1.c, reorg.c, resource.c, resource.h, rtl.c,
rtl.def, rtl.h, rtlanal.c, sbitmap.c, sbitmap.h,
sched-deps.c, sched-ebb.c, sched-int.h, sched-rgn.c,
sched-vis.c, sdbout.c, sdbout.h, sibcall.c, simplify-rtx.c,
ssa-ccp.c, ssa-dce.c, ssa.c, ssa.h, stmt.c, stor-layout.c,
stringpool.c, system.h, timevar.c, timevar.def, timevar.h,
tlink.c, toplev.c, toplev.h, tree.c, tree.def, tree.h,
tsystem.h, unroll.c, unwind-dw2-fde.c, unwind-dw2-fde.h,
unwind-dw2.c, unwind-pe.h, unwind-sjlj.c, unwind.h,
unwind.inc, varasm.c, varray.c, varray.h, xcoffout.c,
xcoffout.h: replace "GNU CC" with "GCC".
From-SVN: r45105
2001-08-22 16:35:51 +02:00
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This file is part of GCC.
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2001-02-13 00:15:38 +01:00
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Makefile.in, [...]: replace "GNU CC" with "GCC".
* Makefile.in, alias.c, basic-block.h, bb-reorder.c, bitmap.c,
bitmap.h, builtin-types.def, builtins.c, builtins.def,
c-aux-info.c, c-common.c, c-common.def, c-common.h,
c-convert.c, c-decl.c, c-dump.c, c-dump.h, c-errors.c,
c-format.c, c-lang.c, c-lex.c, c-lex.h, c-parse.in,
c-pragma.c, c-pragma.h, c-semantics.c, c-tree.h, c-typeck.c,
caller-save.c, calls.c, collect2.c, collect2.h, combine.c,
conditions.h, config.gcc, configure.frag, configure.in,
conflict.c, convert.c, convert.h, cppspec.c, crtstuff.c,
cse.c, cselib.c, cselib.h, dbxout.c, dbxout.h, defaults.h,
dependence.c, df.c, df.h, diagnostic.c, diagnostic.h,
doloop.c, dominance.c, dwarf.h, dwarf2.h, dwarf2asm.c,
dwarf2asm.h, dwarf2out.c, dwarf2out.h, dwarfout.c,
emit-rtl.c, errors.c, errors.h, except.c, except.h,
exgettext, explow.c, expmed.c, expr.c, expr.h, final.c,
fixproto, flags.h, flow.c, fold-const.c, fp-test.c,
function.c, function.h, gbl-ctors.h, gcc.c, gcc.h, gcc.hlp,
gccspec.c, gcov-io.h, gcse.c, genattr.c, genattrtab.c,
gencheck.c, gencodes.c, genconfig.c, genemit.c,
genextract.c, genflags.c, gengenrtl.c, genmultilib,
genopinit.c, genoutput.c, genpeep.c, genrecog.c,
gensupport.c, gensupport.h, ggc-callbacks.c, ggc-common.c,
ggc-none.c, ggc-page.c, ggc-simple.c, ggc.h, global.c,
graph.c, graph.h, gthr-aix.h, gthr-dce.h, gthr-posix.h,
gthr-rtems.h, gthr-single.h, gthr-solaris.h, gthr-vxworks.h,
gthr-win32.h, gthr.h, haifa-sched.c, halfpic.c, halfpic.h,
hard-reg-set.h, hwint.h, ifcvt.c, input.h, insn-addr.h,
integrate.c, integrate.h, jump.c, lcm.c, libgcc2.c,
libgcc2.h, lists.c, local-alloc.c, loop.c, loop.h,
machmode.def, machmode.h, main.c, mbchar.c, mbchar.h,
mips-tdump.c, mips-tfile.c, mklibgcc.in, mkmap-flat.awk,
mkmap-symver.awk, optabs.c, output.h, params.c, params.def,
params.h, predict.c, predict.def, predict.h, prefix.c,
prefix.h, print-rtl.c, print-tree.c, profile.c, protoize.c,
read-rtl.c, real.c, real.h, recog.c, recog.h, reg-stack.c,
regclass.c, regmove.c, regrename.c, regs.h, reload.c,
reload.h, reload1.c, reorg.c, resource.c, resource.h, rtl.c,
rtl.def, rtl.h, rtlanal.c, sbitmap.c, sbitmap.h,
sched-deps.c, sched-ebb.c, sched-int.h, sched-rgn.c,
sched-vis.c, sdbout.c, sdbout.h, sibcall.c, simplify-rtx.c,
ssa-ccp.c, ssa-dce.c, ssa.c, ssa.h, stmt.c, stor-layout.c,
stringpool.c, system.h, timevar.c, timevar.def, timevar.h,
tlink.c, toplev.c, toplev.h, tree.c, tree.def, tree.h,
tsystem.h, unroll.c, unwind-dw2-fde.c, unwind-dw2-fde.h,
unwind-dw2.c, unwind-pe.h, unwind-sjlj.c, unwind.h,
unwind.inc, varasm.c, varray.c, varray.h, xcoffout.c,
xcoffout.h: replace "GNU CC" with "GCC".
From-SVN: r45105
2001-08-22 16:35:51 +02:00
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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2001-02-13 00:15:38 +01:00
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Makefile.in, [...]: replace "GNU CC" with "GCC".
* Makefile.in, alias.c, basic-block.h, bb-reorder.c, bitmap.c,
bitmap.h, builtin-types.def, builtins.c, builtins.def,
c-aux-info.c, c-common.c, c-common.def, c-common.h,
c-convert.c, c-decl.c, c-dump.c, c-dump.h, c-errors.c,
c-format.c, c-lang.c, c-lex.c, c-lex.h, c-parse.in,
c-pragma.c, c-pragma.h, c-semantics.c, c-tree.h, c-typeck.c,
caller-save.c, calls.c, collect2.c, collect2.h, combine.c,
conditions.h, config.gcc, configure.frag, configure.in,
conflict.c, convert.c, convert.h, cppspec.c, crtstuff.c,
cse.c, cselib.c, cselib.h, dbxout.c, dbxout.h, defaults.h,
dependence.c, df.c, df.h, diagnostic.c, diagnostic.h,
doloop.c, dominance.c, dwarf.h, dwarf2.h, dwarf2asm.c,
dwarf2asm.h, dwarf2out.c, dwarf2out.h, dwarfout.c,
emit-rtl.c, errors.c, errors.h, except.c, except.h,
exgettext, explow.c, expmed.c, expr.c, expr.h, final.c,
fixproto, flags.h, flow.c, fold-const.c, fp-test.c,
function.c, function.h, gbl-ctors.h, gcc.c, gcc.h, gcc.hlp,
gccspec.c, gcov-io.h, gcse.c, genattr.c, genattrtab.c,
gencheck.c, gencodes.c, genconfig.c, genemit.c,
genextract.c, genflags.c, gengenrtl.c, genmultilib,
genopinit.c, genoutput.c, genpeep.c, genrecog.c,
gensupport.c, gensupport.h, ggc-callbacks.c, ggc-common.c,
ggc-none.c, ggc-page.c, ggc-simple.c, ggc.h, global.c,
graph.c, graph.h, gthr-aix.h, gthr-dce.h, gthr-posix.h,
gthr-rtems.h, gthr-single.h, gthr-solaris.h, gthr-vxworks.h,
gthr-win32.h, gthr.h, haifa-sched.c, halfpic.c, halfpic.h,
hard-reg-set.h, hwint.h, ifcvt.c, input.h, insn-addr.h,
integrate.c, integrate.h, jump.c, lcm.c, libgcc2.c,
libgcc2.h, lists.c, local-alloc.c, loop.c, loop.h,
machmode.def, machmode.h, main.c, mbchar.c, mbchar.h,
mips-tdump.c, mips-tfile.c, mklibgcc.in, mkmap-flat.awk,
mkmap-symver.awk, optabs.c, output.h, params.c, params.def,
params.h, predict.c, predict.def, predict.h, prefix.c,
prefix.h, print-rtl.c, print-tree.c, profile.c, protoize.c,
read-rtl.c, real.c, real.h, recog.c, recog.h, reg-stack.c,
regclass.c, regmove.c, regrename.c, regs.h, reload.c,
reload.h, reload1.c, reorg.c, resource.c, resource.h, rtl.c,
rtl.def, rtl.h, rtlanal.c, sbitmap.c, sbitmap.h,
sched-deps.c, sched-ebb.c, sched-int.h, sched-rgn.c,
sched-vis.c, sdbout.c, sdbout.h, sibcall.c, simplify-rtx.c,
ssa-ccp.c, ssa-dce.c, ssa.c, ssa.h, stmt.c, stor-layout.c,
stringpool.c, system.h, timevar.c, timevar.def, timevar.h,
tlink.c, toplev.c, toplev.h, tree.c, tree.def, tree.h,
tsystem.h, unroll.c, unwind-dw2-fde.c, unwind-dw2-fde.h,
unwind-dw2.c, unwind-pe.h, unwind-sjlj.c, unwind.h,
unwind.inc, varasm.c, varray.c, varray.h, xcoffout.c,
xcoffout.h: replace "GNU CC" with "GCC".
From-SVN: r45105
2001-08-22 16:35:51 +02:00
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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2001-02-13 00:15:38 +01:00
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You should have received a copy of the GNU General Public License
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Makefile.in, [...]: replace "GNU CC" with "GCC".
* Makefile.in, alias.c, basic-block.h, bb-reorder.c, bitmap.c,
bitmap.h, builtin-types.def, builtins.c, builtins.def,
c-aux-info.c, c-common.c, c-common.def, c-common.h,
c-convert.c, c-decl.c, c-dump.c, c-dump.h, c-errors.c,
c-format.c, c-lang.c, c-lex.c, c-lex.h, c-parse.in,
c-pragma.c, c-pragma.h, c-semantics.c, c-tree.h, c-typeck.c,
caller-save.c, calls.c, collect2.c, collect2.h, combine.c,
conditions.h, config.gcc, configure.frag, configure.in,
conflict.c, convert.c, convert.h, cppspec.c, crtstuff.c,
cse.c, cselib.c, cselib.h, dbxout.c, dbxout.h, defaults.h,
dependence.c, df.c, df.h, diagnostic.c, diagnostic.h,
doloop.c, dominance.c, dwarf.h, dwarf2.h, dwarf2asm.c,
dwarf2asm.h, dwarf2out.c, dwarf2out.h, dwarfout.c,
emit-rtl.c, errors.c, errors.h, except.c, except.h,
exgettext, explow.c, expmed.c, expr.c, expr.h, final.c,
fixproto, flags.h, flow.c, fold-const.c, fp-test.c,
function.c, function.h, gbl-ctors.h, gcc.c, gcc.h, gcc.hlp,
gccspec.c, gcov-io.h, gcse.c, genattr.c, genattrtab.c,
gencheck.c, gencodes.c, genconfig.c, genemit.c,
genextract.c, genflags.c, gengenrtl.c, genmultilib,
genopinit.c, genoutput.c, genpeep.c, genrecog.c,
gensupport.c, gensupport.h, ggc-callbacks.c, ggc-common.c,
ggc-none.c, ggc-page.c, ggc-simple.c, ggc.h, global.c,
graph.c, graph.h, gthr-aix.h, gthr-dce.h, gthr-posix.h,
gthr-rtems.h, gthr-single.h, gthr-solaris.h, gthr-vxworks.h,
gthr-win32.h, gthr.h, haifa-sched.c, halfpic.c, halfpic.h,
hard-reg-set.h, hwint.h, ifcvt.c, input.h, insn-addr.h,
integrate.c, integrate.h, jump.c, lcm.c, libgcc2.c,
libgcc2.h, lists.c, local-alloc.c, loop.c, loop.h,
machmode.def, machmode.h, main.c, mbchar.c, mbchar.h,
mips-tdump.c, mips-tfile.c, mklibgcc.in, mkmap-flat.awk,
mkmap-symver.awk, optabs.c, output.h, params.c, params.def,
params.h, predict.c, predict.def, predict.h, prefix.c,
prefix.h, print-rtl.c, print-tree.c, profile.c, protoize.c,
read-rtl.c, real.c, real.h, recog.c, recog.h, reg-stack.c,
regclass.c, regmove.c, regrename.c, regs.h, reload.c,
reload.h, reload1.c, reorg.c, resource.c, resource.h, rtl.c,
rtl.def, rtl.h, rtlanal.c, sbitmap.c, sbitmap.h,
sched-deps.c, sched-ebb.c, sched-int.h, sched-rgn.c,
sched-vis.c, sdbout.c, sdbout.h, sibcall.c, simplify-rtx.c,
ssa-ccp.c, ssa-dce.c, ssa.c, ssa.h, stmt.c, stor-layout.c,
stringpool.c, system.h, timevar.c, timevar.def, timevar.h,
tlink.c, toplev.c, toplev.h, tree.c, tree.def, tree.h,
tsystem.h, unroll.c, unwind-dw2-fde.c, unwind-dw2-fde.h,
unwind-dw2.c, unwind-pe.h, unwind-sjlj.c, unwind.h,
unwind.inc, varasm.c, varray.c, varray.h, xcoffout.c,
xcoffout.h: replace "GNU CC" with "GCC".
From-SVN: r45105
2001-08-22 16:35:51 +02:00
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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2001-02-13 00:15:38 +01:00
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#include "config.h"
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#include "system.h"
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2002-12-16 19:23:00 +01:00
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#include "coretypes.h"
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#include "tm.h"
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2001-02-13 00:15:38 +01:00
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#include "rtl.h"
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#include "tm_p.h"
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#include "regs.h"
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#include "hard-reg-set.h"
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#include "flags.h"
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#include "real.h"
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#include "insn-config.h"
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#include "recog.h"
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#include "function.h"
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#include "expr.h"
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#include "toplev.h"
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#include "output.h"
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#include "ggc.h"
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#include "hashtab.h"
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#include "cselib.h"
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static int entry_and_rtx_equal_p PARAMS ((const void *, const void *));
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2002-10-09 19:26:27 +02:00
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static hashval_t get_value_hash PARAMS ((const void *));
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2001-02-13 00:15:38 +01:00
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static struct elt_list *new_elt_list PARAMS ((struct elt_list *,
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cselib_val *));
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static struct elt_loc_list *new_elt_loc_list PARAMS ((struct elt_loc_list *,
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rtx));
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static void unchain_one_value PARAMS ((cselib_val *));
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static void unchain_one_elt_list PARAMS ((struct elt_list **));
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static void unchain_one_elt_loc_list PARAMS ((struct elt_loc_list **));
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static void clear_table PARAMS ((int));
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static int discard_useless_locs PARAMS ((void **, void *));
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static int discard_useless_values PARAMS ((void **, void *));
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static void remove_useless_values PARAMS ((void));
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static rtx wrap_constant PARAMS ((enum machine_mode, rtx));
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static unsigned int hash_rtx PARAMS ((rtx, enum machine_mode, int));
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static cselib_val *new_cselib_val PARAMS ((unsigned int,
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enum machine_mode));
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static void add_mem_for_addr PARAMS ((cselib_val *, cselib_val *,
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rtx));
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static cselib_val *cselib_lookup_mem PARAMS ((rtx, int));
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static void cselib_invalidate_regno PARAMS ((unsigned int,
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enum machine_mode));
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static int cselib_mem_conflict_p PARAMS ((rtx, rtx));
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static void cselib_invalidate_mem PARAMS ((rtx));
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static void cselib_invalidate_rtx PARAMS ((rtx, rtx, void *));
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static void cselib_record_set PARAMS ((rtx, cselib_val *,
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cselib_val *));
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static void cselib_record_sets PARAMS ((rtx));
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/* There are three ways in which cselib can look up an rtx:
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- for a REG, the reg_values table (which is indexed by regno) is used
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- for a MEM, we recursively look up its address and then follow the
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addr_list of that value
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- for everything else, we compute a hash value and go through the hash
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table. Since different rtx's can still have the same hash value,
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this involves walking the table entries for a given value and comparing
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the locations of the entries with the rtx we are looking up. */
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/* A table that enables us to look up elts by their value. */
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2002-06-04 09:11:05 +02:00
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static GTY((param_is (cselib_val))) htab_t hash_table;
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2001-02-13 00:15:38 +01:00
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/* This is a global so we don't have to pass this through every function.
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It is used in new_elt_loc_list to set SETTING_INSN. */
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static rtx cselib_current_insn;
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2003-01-07 23:14:43 +01:00
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static bool cselib_current_insn_in_libcall;
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2001-02-13 00:15:38 +01:00
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/* Every new unknown value gets a unique number. */
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static unsigned int next_unknown_value;
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/* The number of registers we had when the varrays were last resized. */
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static unsigned int cselib_nregs;
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/* Count values without known locations. Whenever this grows too big, we
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remove these useless values from the table. */
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static int n_useless_values;
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/* Number of useless values before we remove them from the hash table. */
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#define MAX_USELESS_VALUES 32
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/* This table maps from register number to values. It does not contain
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pointers to cselib_val structures, but rather elt_lists. The purpose is
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to be able to refer to the same register in different modes. */
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2002-06-04 09:11:05 +02:00
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static GTY(()) varray_type reg_values;
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static GTY((deletable (""))) varray_type reg_values_old;
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2001-02-13 00:15:38 +01:00
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#define REG_VALUES(I) VARRAY_ELT_LIST (reg_values, (I))
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2002-05-21 09:55:22 +02:00
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/* The largest number of hard regs used by any entry added to the
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2002-09-12 19:31:41 +02:00
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REG_VALUES table. Cleared on each clear_table() invocation. */
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2002-05-21 09:55:22 +02:00
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static unsigned int max_value_regs;
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2001-02-13 00:15:38 +01:00
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/* Here the set of indices I with REG_VALUES(I) != 0 is saved. This is used
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in clear_table() for fast emptying. */
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2002-06-04 09:11:05 +02:00
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static GTY(()) varray_type used_regs;
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static GTY((deletable (""))) varray_type used_regs_old;
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2001-02-13 00:15:38 +01:00
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/* We pass this to cselib_invalidate_mem to invalidate all of
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memory for a non-const call instruction. */
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2002-06-04 09:11:05 +02:00
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static GTY(()) rtx callmem;
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2001-02-13 00:15:38 +01:00
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/* Caches for unused structures. */
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2002-06-04 09:11:05 +02:00
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static GTY((deletable (""))) cselib_val *empty_vals;
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static GTY((deletable (""))) struct elt_list *empty_elt_lists;
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static GTY((deletable (""))) struct elt_loc_list *empty_elt_loc_lists;
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2001-02-13 00:15:38 +01:00
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/* Set by discard_useless_locs if it deleted the last location of any
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value. */
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static int values_became_useless;
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2003-03-11 22:52:42 +01:00
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/* Used as stop element of the containing_mem list so we can check
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presence in the list by checking the next pointer. */
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static cselib_val dummy_val;
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/* Used to list all values that contain memory reference.
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May or may not contain the useless values - the list is compacted
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each time memory is invalidated. */
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static cselib_val *first_containing_mem = &dummy_val;
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2001-02-13 00:15:38 +01:00
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/* Allocate a struct elt_list and fill in its two elements with the
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arguments. */
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static struct elt_list *
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new_elt_list (next, elt)
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struct elt_list *next;
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cselib_val *elt;
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{
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struct elt_list *el = empty_elt_lists;
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if (el)
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empty_elt_lists = el->next;
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else
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2002-06-04 09:11:05 +02:00
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el = (struct elt_list *) ggc_alloc (sizeof (struct elt_list));
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2001-02-13 00:15:38 +01:00
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el->next = next;
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el->elt = elt;
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return el;
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}
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/* Allocate a struct elt_loc_list and fill in its two elements with the
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arguments. */
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static struct elt_loc_list *
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new_elt_loc_list (next, loc)
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struct elt_loc_list *next;
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rtx loc;
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{
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struct elt_loc_list *el = empty_elt_loc_lists;
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if (el)
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empty_elt_loc_lists = el->next;
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else
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2002-06-04 09:11:05 +02:00
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el = (struct elt_loc_list *) ggc_alloc (sizeof (struct elt_loc_list));
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2001-02-13 00:15:38 +01:00
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el->next = next;
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el->loc = loc;
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el->setting_insn = cselib_current_insn;
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2003-01-07 23:14:43 +01:00
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el->in_libcall = cselib_current_insn_in_libcall;
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2001-02-13 00:15:38 +01:00
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return el;
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}
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/* The elt_list at *PL is no longer needed. Unchain it and free its
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storage. */
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static void
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unchain_one_elt_list (pl)
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struct elt_list **pl;
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{
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struct elt_list *l = *pl;
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*pl = l->next;
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l->next = empty_elt_lists;
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empty_elt_lists = l;
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}
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/* Likewise for elt_loc_lists. */
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static void
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unchain_one_elt_loc_list (pl)
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struct elt_loc_list **pl;
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{
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struct elt_loc_list *l = *pl;
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*pl = l->next;
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l->next = empty_elt_loc_lists;
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empty_elt_loc_lists = l;
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}
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/* Likewise for cselib_vals. This also frees the addr_list associated with
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V. */
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static void
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unchain_one_value (v)
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cselib_val *v;
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{
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while (v->addr_list)
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unchain_one_elt_list (&v->addr_list);
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v->u.next_free = empty_vals;
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empty_vals = v;
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}
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/* Remove all entries from the hash table. Also used during
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initialization. If CLEAR_ALL isn't set, then only clear the entries
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which are known to have been used. */
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static void
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clear_table (clear_all)
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int clear_all;
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{
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unsigned int i;
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if (clear_all)
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for (i = 0; i < cselib_nregs; i++)
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REG_VALUES (i) = 0;
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else
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for (i = 0; i < VARRAY_ACTIVE_SIZE (used_regs); i++)
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REG_VALUES (VARRAY_UINT (used_regs, i)) = 0;
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2002-05-21 09:55:22 +02:00
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max_value_regs = 0;
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2001-02-13 00:15:38 +01:00
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VARRAY_POP_ALL (used_regs);
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htab_empty (hash_table);
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n_useless_values = 0;
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next_unknown_value = 0;
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2003-03-11 22:52:42 +01:00
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first_containing_mem = &dummy_val;
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2001-02-13 00:15:38 +01:00
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}
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/* The equality test for our hash table. The first argument ENTRY is a table
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element (i.e. a cselib_val), while the second arg X is an rtx. We know
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that all callers of htab_find_slot_with_hash will wrap CONST_INTs into a
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CONST of an appropriate mode. */
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static int
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entry_and_rtx_equal_p (entry, x_arg)
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const void *entry, *x_arg;
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{
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struct elt_loc_list *l;
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const cselib_val *v = (const cselib_val *) entry;
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rtx x = (rtx) x_arg;
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enum machine_mode mode = GET_MODE (x);
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if (GET_CODE (x) == CONST_INT
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|| (mode == VOIDmode && GET_CODE (x) == CONST_DOUBLE))
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abort ();
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if (mode != GET_MODE (v->u.val_rtx))
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return 0;
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/* Unwrap X if necessary. */
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if (GET_CODE (x) == CONST
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&& (GET_CODE (XEXP (x, 0)) == CONST_INT
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|| GET_CODE (XEXP (x, 0)) == CONST_DOUBLE))
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x = XEXP (x, 0);
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/* We don't guarantee that distinct rtx's have different hash values,
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so we need to do a comparison. */
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for (l = v->locs; l; l = l->next)
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if (rtx_equal_for_cselib_p (l->loc, x))
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return 1;
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return 0;
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}
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/* The hash function for our hash table. The value is always computed with
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hash_rtx when adding an element; this function just extracts the hash
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value from a cselib_val structure. */
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2002-10-09 19:26:27 +02:00
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static hashval_t
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2001-02-13 00:15:38 +01:00
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get_value_hash (entry)
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const void *entry;
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{
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const cselib_val *v = (const cselib_val *) entry;
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return v->value;
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}
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/* Return true if X contains a VALUE rtx. If ONLY_USELESS is set, we
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only return true for values which point to a cselib_val whose value
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element has been set to zero, which implies the cselib_val will be
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removed. */
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int
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references_value_p (x, only_useless)
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rtx x;
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int only_useless;
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{
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enum rtx_code code = GET_CODE (x);
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const char *fmt = GET_RTX_FORMAT (code);
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int i, j;
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if (GET_CODE (x) == VALUE
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&& (! only_useless || CSELIB_VAL_PTR (x)->locs == 0))
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return 1;
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for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
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{
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if (fmt[i] == 'e' && references_value_p (XEXP (x, i), only_useless))
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return 1;
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else if (fmt[i] == 'E')
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for (j = 0; j < XVECLEN (x, i); j++)
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if (references_value_p (XVECEXP (x, i, j), only_useless))
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return 1;
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}
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return 0;
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}
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/* For all locations found in X, delete locations that reference useless
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values (i.e. values without any location). Called through
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htab_traverse. */
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static int
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discard_useless_locs (x, info)
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void **x;
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void *info ATTRIBUTE_UNUSED;
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{
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cselib_val *v = (cselib_val *)*x;
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struct elt_loc_list **p = &v->locs;
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int had_locs = v->locs != 0;
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while (*p)
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{
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if (references_value_p ((*p)->loc, 1))
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unchain_one_elt_loc_list (p);
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else
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p = &(*p)->next;
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}
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if (had_locs && v->locs == 0)
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{
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n_useless_values++;
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values_became_useless = 1;
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}
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return 1;
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}
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/* If X is a value with no locations, remove it from the hashtable. */
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static int
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discard_useless_values (x, info)
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void **x;
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void *info ATTRIBUTE_UNUSED;
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{
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cselib_val *v = (cselib_val *)*x;
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if (v->locs == 0)
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{
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htab_clear_slot (hash_table, x);
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unchain_one_value (v);
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n_useless_values--;
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}
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return 1;
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}
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/* Clean out useless values (i.e. those which no longer have locations
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associated with them) from the hash table. */
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static void
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remove_useless_values ()
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{
|
2003-03-11 22:52:42 +01:00
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cselib_val **p, *v;
|
2001-02-13 00:15:38 +01:00
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/* First pass: eliminate locations that reference the value. That in
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turn can make more values useless. */
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do
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{
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values_became_useless = 0;
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htab_traverse (hash_table, discard_useless_locs, 0);
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}
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while (values_became_useless);
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/* Second pass: actually remove the values. */
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htab_traverse (hash_table, discard_useless_values, 0);
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|
2003-03-11 22:52:42 +01:00
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|
p = &first_containing_mem;
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|
for (v = *p; v != &dummy_val; v = v->next_containing_mem)
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if (v->locs)
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|
|
{
|
|
|
|
|
*p = v;
|
|
|
|
|
p = &(*p)->next_containing_mem;
|
|
|
|
|
}
|
|
|
|
|
*p = &dummy_val;
|
|
|
|
|
|
2001-02-13 00:15:38 +01:00
|
|
|
|
if (n_useless_values != 0)
|
|
|
|
|
abort ();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Return nonzero if we can prove that X and Y contain the same value, taking
|
|
|
|
|
our gathered information into account. */
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
|
rtx_equal_for_cselib_p (x, y)
|
|
|
|
|
rtx x, y;
|
|
|
|
|
{
|
|
|
|
|
enum rtx_code code;
|
|
|
|
|
const char *fmt;
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
if (GET_CODE (x) == REG || GET_CODE (x) == MEM)
|
|
|
|
|
{
|
|
|
|
|
cselib_val *e = cselib_lookup (x, GET_MODE (x), 0);
|
|
|
|
|
|
|
|
|
|
if (e)
|
|
|
|
|
x = e->u.val_rtx;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (GET_CODE (y) == REG || GET_CODE (y) == MEM)
|
|
|
|
|
{
|
|
|
|
|
cselib_val *e = cselib_lookup (y, GET_MODE (y), 0);
|
|
|
|
|
|
|
|
|
|
if (e)
|
|
|
|
|
y = e->u.val_rtx;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (x == y)
|
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
|
|
if (GET_CODE (x) == VALUE && GET_CODE (y) == VALUE)
|
|
|
|
|
return CSELIB_VAL_PTR (x) == CSELIB_VAL_PTR (y);
|
|
|
|
|
|
|
|
|
|
if (GET_CODE (x) == VALUE)
|
|
|
|
|
{
|
|
|
|
|
cselib_val *e = CSELIB_VAL_PTR (x);
|
|
|
|
|
struct elt_loc_list *l;
|
|
|
|
|
|
|
|
|
|
for (l = e->locs; l; l = l->next)
|
|
|
|
|
{
|
|
|
|
|
rtx t = l->loc;
|
|
|
|
|
|
|
|
|
|
/* Avoid infinite recursion. */
|
|
|
|
|
if (GET_CODE (t) == REG || GET_CODE (t) == MEM)
|
|
|
|
|
continue;
|
|
|
|
|
else if (rtx_equal_for_cselib_p (t, y))
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (GET_CODE (y) == VALUE)
|
|
|
|
|
{
|
|
|
|
|
cselib_val *e = CSELIB_VAL_PTR (y);
|
|
|
|
|
struct elt_loc_list *l;
|
|
|
|
|
|
|
|
|
|
for (l = e->locs; l; l = l->next)
|
|
|
|
|
{
|
|
|
|
|
rtx t = l->loc;
|
|
|
|
|
|
|
|
|
|
if (GET_CODE (t) == REG || GET_CODE (t) == MEM)
|
|
|
|
|
continue;
|
|
|
|
|
else if (rtx_equal_for_cselib_p (x, t))
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (GET_CODE (x) != GET_CODE (y) || GET_MODE (x) != GET_MODE (y))
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
/* This won't be handled correctly by the code below. */
|
|
|
|
|
if (GET_CODE (x) == LABEL_REF)
|
|
|
|
|
return XEXP (x, 0) == XEXP (y, 0);
|
|
|
|
|
|
|
|
|
|
code = GET_CODE (x);
|
|
|
|
|
fmt = GET_RTX_FORMAT (code);
|
|
|
|
|
|
|
|
|
|
for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
|
|
|
|
|
{
|
|
|
|
|
int j;
|
|
|
|
|
|
|
|
|
|
switch (fmt[i])
|
|
|
|
|
{
|
|
|
|
|
case 'w':
|
|
|
|
|
if (XWINT (x, i) != XWINT (y, i))
|
|
|
|
|
return 0;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case 'n':
|
|
|
|
|
case 'i':
|
|
|
|
|
if (XINT (x, i) != XINT (y, i))
|
|
|
|
|
return 0;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case 'V':
|
|
|
|
|
case 'E':
|
|
|
|
|
/* Two vectors must have the same length. */
|
|
|
|
|
if (XVECLEN (x, i) != XVECLEN (y, i))
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
/* And the corresponding elements must match. */
|
|
|
|
|
for (j = 0; j < XVECLEN (x, i); j++)
|
|
|
|
|
if (! rtx_equal_for_cselib_p (XVECEXP (x, i, j),
|
|
|
|
|
XVECEXP (y, i, j)))
|
|
|
|
|
return 0;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case 'e':
|
|
|
|
|
if (! rtx_equal_for_cselib_p (XEXP (x, i), XEXP (y, i)))
|
|
|
|
|
return 0;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case 'S':
|
|
|
|
|
case 's':
|
|
|
|
|
if (strcmp (XSTR (x, i), XSTR (y, i)))
|
|
|
|
|
return 0;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case 'u':
|
|
|
|
|
/* These are just backpointers, so they don't matter. */
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case '0':
|
|
|
|
|
case 't':
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
/* It is believed that rtx's at this level will never
|
|
|
|
|
contain anything but integers and other rtx's,
|
|
|
|
|
except for within LABEL_REFs and SYMBOL_REFs. */
|
|
|
|
|
default:
|
|
|
|
|
abort ();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* We need to pass down the mode of constants through the hash table
|
|
|
|
|
functions. For that purpose, wrap them in a CONST of the appropriate
|
|
|
|
|
mode. */
|
|
|
|
|
static rtx
|
|
|
|
|
wrap_constant (mode, x)
|
|
|
|
|
enum machine_mode mode;
|
|
|
|
|
rtx x;
|
|
|
|
|
{
|
|
|
|
|
if (GET_CODE (x) != CONST_INT
|
|
|
|
|
&& (GET_CODE (x) != CONST_DOUBLE || GET_MODE (x) != VOIDmode))
|
|
|
|
|
return x;
|
|
|
|
|
if (mode == VOIDmode)
|
|
|
|
|
abort ();
|
|
|
|
|
return gen_rtx_CONST (mode, x);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Hash an rtx. Return 0 if we couldn't hash the rtx.
|
|
|
|
|
For registers and memory locations, we look up their cselib_val structure
|
|
|
|
|
and return its VALUE element.
|
|
|
|
|
Possible reasons for return 0 are: the object is volatile, or we couldn't
|
|
|
|
|
find a register or memory location in the table and CREATE is zero. If
|
|
|
|
|
CREATE is nonzero, table elts are created for regs and mem.
|
|
|
|
|
MODE is used in hashing for CONST_INTs only;
|
|
|
|
|
otherwise the mode of X is used. */
|
|
|
|
|
|
|
|
|
|
static unsigned int
|
|
|
|
|
hash_rtx (x, mode, create)
|
|
|
|
|
rtx x;
|
|
|
|
|
enum machine_mode mode;
|
|
|
|
|
int create;
|
|
|
|
|
{
|
|
|
|
|
cselib_val *e;
|
|
|
|
|
int i, j;
|
|
|
|
|
enum rtx_code code;
|
|
|
|
|
const char *fmt;
|
|
|
|
|
unsigned int hash = 0;
|
|
|
|
|
|
|
|
|
|
code = GET_CODE (x);
|
|
|
|
|
hash += (unsigned) code + (unsigned) GET_MODE (x);
|
|
|
|
|
|
|
|
|
|
switch (code)
|
|
|
|
|
{
|
|
|
|
|
case MEM:
|
|
|
|
|
case REG:
|
|
|
|
|
e = cselib_lookup (x, GET_MODE (x), create);
|
|
|
|
|
if (! e)
|
|
|
|
|
return 0;
|
|
|
|
|
|
2001-03-15 13:59:26 +01:00
|
|
|
|
return e->value;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
|
|
|
|
case CONST_INT:
|
|
|
|
|
hash += ((unsigned) CONST_INT << 7) + (unsigned) mode + INTVAL (x);
|
2001-03-03 00:15:32 +01:00
|
|
|
|
return hash ? hash : (unsigned int) CONST_INT;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
|
|
|
|
case CONST_DOUBLE:
|
|
|
|
|
/* This is like the general case, except that it only counts
|
|
|
|
|
the integers representing the constant. */
|
|
|
|
|
hash += (unsigned) code + (unsigned) GET_MODE (x);
|
|
|
|
|
if (GET_MODE (x) != VOIDmode)
|
2002-09-20 19:50:48 +02:00
|
|
|
|
hash += real_hash (CONST_DOUBLE_REAL_VALUE (x));
|
2001-02-13 00:15:38 +01:00
|
|
|
|
else
|
|
|
|
|
hash += ((unsigned) CONST_DOUBLE_LOW (x)
|
|
|
|
|
+ (unsigned) CONST_DOUBLE_HIGH (x));
|
2001-03-03 00:15:32 +01:00
|
|
|
|
return hash ? hash : (unsigned int) CONST_DOUBLE;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
2002-02-19 03:53:41 +01:00
|
|
|
|
case CONST_VECTOR:
|
|
|
|
|
{
|
|
|
|
|
int units;
|
|
|
|
|
rtx elt;
|
|
|
|
|
|
|
|
|
|
units = CONST_VECTOR_NUNITS (x);
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < units; ++i)
|
|
|
|
|
{
|
|
|
|
|
elt = CONST_VECTOR_ELT (x, i);
|
|
|
|
|
hash += hash_rtx (elt, GET_MODE (elt), 0);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return hash;
|
|
|
|
|
}
|
|
|
|
|
|
2001-02-13 00:15:38 +01:00
|
|
|
|
/* Assume there is only one rtx object for any given label. */
|
|
|
|
|
case LABEL_REF:
|
|
|
|
|
hash
|
|
|
|
|
+= ((unsigned) LABEL_REF << 7) + (unsigned long) XEXP (x, 0);
|
2001-03-03 00:15:32 +01:00
|
|
|
|
return hash ? hash : (unsigned int) LABEL_REF;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
|
|
|
|
case SYMBOL_REF:
|
|
|
|
|
hash
|
|
|
|
|
+= ((unsigned) SYMBOL_REF << 7) + (unsigned long) XSTR (x, 0);
|
2001-03-03 00:15:32 +01:00
|
|
|
|
return hash ? hash : (unsigned int) SYMBOL_REF;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
|
|
|
|
case PRE_DEC:
|
|
|
|
|
case PRE_INC:
|
|
|
|
|
case POST_DEC:
|
|
|
|
|
case POST_INC:
|
|
|
|
|
case POST_MODIFY:
|
|
|
|
|
case PRE_MODIFY:
|
|
|
|
|
case PC:
|
|
|
|
|
case CC0:
|
|
|
|
|
case CALL:
|
|
|
|
|
case UNSPEC_VOLATILE:
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
case ASM_OPERANDS:
|
|
|
|
|
if (MEM_VOLATILE_P (x))
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
i = GET_RTX_LENGTH (code) - 1;
|
|
|
|
|
fmt = GET_RTX_FORMAT (code);
|
|
|
|
|
for (; i >= 0; i--)
|
|
|
|
|
{
|
|
|
|
|
if (fmt[i] == 'e')
|
|
|
|
|
{
|
|
|
|
|
rtx tem = XEXP (x, i);
|
2001-03-28 16:21:18 +02:00
|
|
|
|
unsigned int tem_hash = hash_rtx (tem, 0, create);
|
|
|
|
|
|
2001-02-13 00:15:38 +01:00
|
|
|
|
if (tem_hash == 0)
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
hash += tem_hash;
|
|
|
|
|
}
|
|
|
|
|
else if (fmt[i] == 'E')
|
|
|
|
|
for (j = 0; j < XVECLEN (x, i); j++)
|
|
|
|
|
{
|
|
|
|
|
unsigned int tem_hash = hash_rtx (XVECEXP (x, i, j), 0, create);
|
|
|
|
|
|
|
|
|
|
if (tem_hash == 0)
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
hash += tem_hash;
|
|
|
|
|
}
|
|
|
|
|
else if (fmt[i] == 's')
|
|
|
|
|
{
|
|
|
|
|
const unsigned char *p = (const unsigned char *) XSTR (x, i);
|
|
|
|
|
|
|
|
|
|
if (p)
|
|
|
|
|
while (*p)
|
|
|
|
|
hash += *p++;
|
|
|
|
|
}
|
|
|
|
|
else if (fmt[i] == 'i')
|
|
|
|
|
hash += XINT (x, i);
|
|
|
|
|
else if (fmt[i] == '0' || fmt[i] == 't')
|
|
|
|
|
/* unused */;
|
|
|
|
|
else
|
|
|
|
|
abort ();
|
|
|
|
|
}
|
|
|
|
|
|
2001-03-03 00:15:32 +01:00
|
|
|
|
return hash ? hash : 1 + (unsigned int) GET_CODE (x);
|
2001-02-13 00:15:38 +01:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Create a new value structure for VALUE and initialize it. The mode of the
|
|
|
|
|
value is MODE. */
|
|
|
|
|
|
|
|
|
|
static cselib_val *
|
|
|
|
|
new_cselib_val (value, mode)
|
|
|
|
|
unsigned int value;
|
|
|
|
|
enum machine_mode mode;
|
|
|
|
|
{
|
|
|
|
|
cselib_val *e = empty_vals;
|
|
|
|
|
|
|
|
|
|
if (e)
|
|
|
|
|
empty_vals = e->u.next_free;
|
|
|
|
|
else
|
2002-06-04 09:11:05 +02:00
|
|
|
|
e = (cselib_val *) ggc_alloc (sizeof (cselib_val));
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
|
|
|
|
if (value == 0)
|
|
|
|
|
abort ();
|
|
|
|
|
|
|
|
|
|
e->value = value;
|
|
|
|
|
e->u.val_rtx = gen_rtx_VALUE (mode);
|
|
|
|
|
CSELIB_VAL_PTR (e->u.val_rtx) = e;
|
|
|
|
|
e->addr_list = 0;
|
|
|
|
|
e->locs = 0;
|
2003-03-11 22:52:42 +01:00
|
|
|
|
e->next_containing_mem = 0;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
return e;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* ADDR_ELT is a value that is used as address. MEM_ELT is the value that
|
|
|
|
|
contains the data at this address. X is a MEM that represents the
|
|
|
|
|
value. Update the two value structures to represent this situation. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
add_mem_for_addr (addr_elt, mem_elt, x)
|
|
|
|
|
cselib_val *addr_elt, *mem_elt;
|
|
|
|
|
rtx x;
|
|
|
|
|
{
|
|
|
|
|
struct elt_loc_list *l;
|
|
|
|
|
|
|
|
|
|
/* Avoid duplicates. */
|
|
|
|
|
for (l = mem_elt->locs; l; l = l->next)
|
|
|
|
|
if (GET_CODE (l->loc) == MEM
|
|
|
|
|
&& CSELIB_VAL_PTR (XEXP (l->loc, 0)) == addr_elt)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
addr_elt->addr_list = new_elt_list (addr_elt->addr_list, mem_elt);
|
[multiple changes]
Mon Jul 9 06:41:07 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* emit-rtl.c (adjust_address_nv, replace_equiv_address_nv): New fcns.
(operand_subword): Use them.
(change_address_1): Renamed from change_address; new arg VALIDATE.
* expr.h: Reflect above changes; change_address now macro.
* alias.c (canon_rtx): Use replace_equiv_address_nv instead of
making MEM.
* cselib.c (add_mem_for_addr): Likewise.
* expr.c (protect_from_queue, emit_move_insn_1): Likewise.
* regmove.c (try_apply_stack_adjustment): Likewise.
* reload.c (push_reload, make_memloc): Likewise.
* reload1.c (eliminate_regs): Likewise.
* simplify-rtx.c (simplify_replace_rtx): Likewise.
* caller-save.c (setup_save_areas): Use adjust_address_nv instead of
adjust_addess.
* combine.c (make_extraction, simplify_shift_const): Likewise.
(gen_lowpart_for_combine): Likewise.
* cse.c (gen_lowpart_if_possible): Likewise.
* function.c (fixup_var_refs_1, purge_addressof_1): Likewise.
* expr.c (expand_expr, case COMPONENT_REF): Likewise.
* optabs.c (gen_move_insn): Likewise.
* reload1.c (alter_reg): Likewise.
* simplify-rtx.c (simplify_subreg): Likewise.
* stmt.c (expand_anon_union_decl): Likewise.
* recog.c (validate_replace_rtx_1): Likewise.
(expr.h): Include.
* Makefile.in (recog.o): Add $(EXPR_H).
* explow.c (stabilize): Call replace_equiv_address.
* expr.c (move_by_pieces_1, store_by_pieces_2): Likewise.
* final.c (alter_subreg): OFFSET is HOST_WIDE_INT.
2001-07-09 Bo Thorsen <bo@suse.co.uk>
* config/i386/unix.h (ASM_OUTPUT_MI_THUNK): Fix x86-64 vtable support.
2001-07-09 Neil Booth <neil@daikokuya.demon.co.uk>
* final.c (output_addr_const): Use target opening and
closing parentheses.
* target-def.h: Define TARGET_ASM_OPEN_PAREN, TARGET_ASM_CLOSE_PAREN
defaults, add to TARGET_ASM_OUT.
* target.h (struct gcc_target): Add open_paren and close_paren.
* doc/md.texi: Update.
* doc/tm.texi: Document TARGET_ASM_FUNCTION_END_PROLOGUE,
TARGET_ASM_FUNCTION_BEGIN_EPILOGUE, TARGET_ASM_OPEN_PAREN and
TARGET_ASM_CLOSE_PAREN.
* config/i386/i386.c (TARGET_ASM_OPEN_PAREN, TARGET_ASM_CLOSE_PAREN):
Override.
* config/pdp11/pdp11.c (TARGET_ASM_OPEN_PAREN, TARGET_ASM_CLOSE_PAREN):
Override.
* config/1750a/1750a.h (ASM_OPEN_PAREN, ASM_CLOSE_PAREN): Remove.
* config/a29k/a29k.h: Similarly.
* config/alpha/alpha.h: Similarly.
* config/arc/arc.h: Similarly.
* config/arm/aof.h: Similarly.
* config/arm/aout.h: Similarly.
* config/avr/avr.h: Similarly.
* config/c4x/c4x.h: Similarly.
* config/clipper/clipper.h: Similarly.
* config/convex/convex.h: Similarly.
* config/d30v/d30v.h: Similarly.
* config/dsp16xx/dsp16xx.h: Similarly.
* config/elxsi/elxsi.h: Similarly.
* config/fr30/fr30.h: Similarly.
* config/h8300/h8300.h: Similarly.
* config/i370/i370.h: Similarly.
* config/i386/i386.h: Similarly.
* config/i860/i860.h: Similarly.
* config/i960/i960.h: Similarly.
* config/ia64/ia64.h: Similarly.
* config/m32r/m32r.h: Similarly.
* config/m68hc11/m68hc11.h: Similarly.
* config/m68k/m68k.h: Similarly.
* config/m88k/m88k.h: Similarly.
* config/mcore/mcore.h: Similarly.
* config/mips/mips.h: Similarly.
* config/mn10200/mn10200.h: Similarly.
* config/mn10300/mn10300.h: Similarly.
* config/ns32k/ns32k.h: Similarly.
* config/pa/pa.h: Similarly.
* config/pdp11/pdp11.h: Similarly.
* config/pj/pj.h: Similarly.
* config/romp/romp.h: Similarly.
* config/rs6000/rs6000.h: Similarly.
* config/sh/sh.h: Similarly.
* config/sparc/sparc.h: Similarly.
* config/v850/v850.h: Similarly.
* config/vax/vax.h: Similarly.
* config/we32k/we32k.h: Similarly.
2001-07-09 Joseph S. Myers <jsm28@cam.ac.uk>
* doc/c-tree.texi: Document representation of attributes.
2001-07-08 Joseph S. Myers <jsm28@cam.ac.uk>
* doc/tm.texi: Update some places for the rename of target to
targetm. Fix typo.
2001-07-08 Joseph S. Myers <jsm28@cam.ac.uk>
* target.h (struct gcc_target): Add insert_attributes.
* target-def.h (TARGET_INSERT_ATTRIBUTES): Define.
(TARGET_INITIALIZER): Update.
* tree.c, tree.h (default_insert_attributes): New function.
Update comments on other default functions to refer to targetm,
not target.
* doc/tm.texi (INSERT_ATTRIBUTES): Update to document
TARGET_INSERT_ATTRIBUTES.
(SET_DEFAULT_DECL_ATTRIBUTES): Remove.
* c-common.c (decl_attributes): Use targetm.insert_attributes.
Don't use PRAGMA_INSERT_ATTRIBUTES.
* Makefile.in (c-common.o): Depend on $(TARGET_H).
* c-decl.c (start_decl, start_function): Don't call
SET_DEFAULT_DECL_ATTRIBUTES.
* config/c4x/c4x.h (SET_DEFAULT_DECL_ATTRIBUTES): Don't define.
* config/c4x/c4x-protos.h (c4x_set_default_attributes): Don't
declare.
* config/c4x/c4x.c (TARGET_INSERT_ATTRIBUTES): Define.
(c4x_check_attribute): Avoid modifying attribute list itself.
(c4x_set_default_attributes): Rename to c4x_insert_attributes.
Make static.
* config/sh/sh.h (PRAGMA_INSERT_ATTRIBUTES): Don't define.
* config/sh/sh-protos.h (sh_pragma_insert_attributes): Don't
declare.
* config/sh/sh.c (TARGET_INSERT_ATTRIBUTES): Define.
(sh_pragma_insert_attributes): Rename to sh_insert_attributes.
Make static.
* config/v850/v850.h (SET_DEFAULT_DECL_ATTRIBUTES): Don't define.
* config/v850/v850-protos.h (v850_set_default_decl_attr): Don't
declare.
* config/v850/v850.c (TARGET_INSERT_ATTRIBUTES): Define.
(v850_set_default_decl_attr): Rename to v850_insert_attributes.
Adjust parameters. Make static.
2001-07-08 Joseph S. Myers <jsm28@cam.ac.uk>
* c-common.c (decl_attributes): Only take a single attributes
parameter.
* c-common.h (decl_attributes): Update prototype.
* c-decl.c (start_decl, start_function): Only take a single
attributes parameter. Update calls to decl_attributes.
(finish_struct, finish_enum): Update calls to decl_attributes.
(push_parm_decl): Expect unified list of attributes. Update call
to decl_attributes.
* c-parse.in (fndef, initdcl, notype_initdcl, nested_function,
notype_nested_function, component_declarator,
component_notype_declarator, label): Update calls to
decl_attributes.
(absdcl_maybe_attribute, parm, firstparm, myparm): Unify attribute
lists that are passed to push_parm_decl.
* c-tree.h (start_function, start_decl): Update prototypes.
* config/sh/sh-protos.h, config/sh/sh.c
(sh_pragma_insert_attributes): Only take a single attributes
parameter.
* config/sh/sh.h (PRAGMA_INSERT_ATTRIBUTES): Likewise.
* doc/tm.texi (INSERT_ATTRIBUTES): Update.
* objc/objc-act.c (define_decl, generate_objc_symtab_decl,
build_module_descriptor, generate_static_references,
generate_strings, build_selector_translation_table,
generate_descriptor_table, generate_protocols,
generate_ivars_list, generate_dispatch_table,
generate_protocol_list, generate_category,
generate_shared_structures, really_start_method, add_objc_decls,
generate_classref_translation_entry): Update calls to start_decl
and start_function.
(build_tmp_function_decl, start_method_def): Unify attribute lists
that are passed to push_parm_decl.
2001-07-08 Neil Booth <neil@daikokuya.demon.co.uk>
* final.c (no_asm_to_stream): New.
(final_scan_insn): Use target structures for prologue ends
and epilogue starts.
* output.h (no_asm_to_stream): New.
* target-def.h (TARGET_ASM_FUNCTION_END_PROLOGUE,
TARGET_ASM_FUNCTION_BEGIN_EPILOGUE): New.
(TARGET_ASM_OUT): Update.
* target.h (struct gcc_target): New members function_end_prologue
and function_begin_epilogue.
* config/1750/1750.h (ASM_OUTPUT_FUNNAM): Delete as unused.
* config/alpha/alpha-protos.h (output_end_prologue): Delete.
* config/alpha/alpha.c (output_end_prologue): Rename to
alpha_output_function_end_prologue. Use in target struct
and make static.
* config/alpha/alpha.h (FUNCTION_END_PROLOGUE): Delete.
* config/ia64/ia64-protos.h (ia64_output_end_prologue): Delete.
* config/ia64/ia64.c (ia64_output_end_prologue): Rename to
ia64_output_function_end_prologue. Use in target struct
and make static.
(ia64_function_prologue, ia64_funciton_epilogue): Rename
mistyped prototypes.
* config/ia64/ia64.h (FUNCTION_END_PROLOGUE): Delete.
* config/m88k/m88k-protos.h (m88k_end_prologue, m88k_begin_epilogue):
Delete.
* config/m88k/m88k.c (m88k_end_prologue, m88k_begin_epilogue): Rename
an use in target struct, make static.
* config/ia64/ia64.h (FUNCTION_END_PROLOGUE, FUNCTION_BEGIN_EPILOGUE):
Delete.
2001-07-08 Richard Henderson <rth@redhat.com>
* stmt.c (emit_case_nodes): Convert modes properly in low+high test.
2001-07-08 Richard Henderson <rth@redhat.com>
* config/i386/i386.md: Remove constraints strings from define_split
and define_peephole2 patterns.
(eh_return_si, eh_return_di): Split eh_return_1 for modes.
(eh_return): Use them.
2001-07-08 Richard Henderson <rth@redhat.com>
* doc/tm.texi (Exception Handling): New subnode of Stack and Calling.
Document MD_FALLBACK_FRAME_STATE_FOR.
2001-07-07 Stephane Carrez <Stephane.Carrez@worldnet.fr>
* config/m68hc11/m68hc11.c (m68hc11_initial_elimination_offset):
Take into account m68hc11_sp_correction for FRAME_POINTER_REGNUM
elimination.
* config/m68hc11/m68hc11.h (STARTING_FRAME_OFFSET): Use 0.
2001-07-07 Nick Clifton <nickc@cambridge.redhat.com>
* config/ia64/sysv4.h (ASM_OUTPUT_LABELREF): Append # to end
of the label inside NAME as opposed to just the end of NAME.
2001-07-07 Neil Booth <neil@daikokuya.demon.co.uk>
* config/alpha/alpha-protos.h (vms_valid_decl_attribute_p): Delete.
* config/alpha/alpha.c (alpha_init_machine_status,
alpha_mark_machine_status, alpha_free_machine_status): Delete.
(TARGET_VALID_DECL_ATTRIBUTE): Define for VMS.
(vms_valid_decl_attribute_p): Make static, conditionally compile.
* config/alpha/alpha.h (VALID_MACHINE_DECL_ATTRIBUTE): Delete.
2001-07-06 Stan Shebs <shebs@apple.com>
* target.h (targetm): Rename global from "target", so as not to
conflict with local variables.
* c-decl.c: Ditto.
* c-typeck.c: Ditto.
* final.c: Ditto.
* tree.c: Ditto.
* cp/decl.c: Ditto.
* cp/decl2.c: Ditto.
* cp/typeck.c: Ditto.
* 1750a/1750a.c: Ditto.
* a29k/a29k.c: Ditto.
* arc/arc.c: Ditto.
* arm/arm.c: Ditto.
* avr/avr.c: Ditto.
* clipper/clipper.c: Ditto.
* convex/convex.c: Ditto.
* d30v/d30v.c: Ditto.
* dsp16xx/dsp16xx.c: Ditto.
* elxsi/elxsi.c: Ditto.
* fr30/fr30.c: Ditto.
* h8300/h8300.c: Ditto.
* i370/i370.c: Ditto.
* i386/i386.c: Ditto.
* i860/i860.c: Ditto.
* i960/i960.c: Ditto.
* ia64/ia64.c: Ditto.
* m32r/m32r.c: Ditto.
* m68hc11/m68hc11.c: Ditto.
* m68k/m68k.c: Ditto.
* m88k/m88k.c: Ditto.
* mips/mips.c: Ditto.
* ns32k/ns32k.c: Ditto.
* pa/pa.c: Ditto.
* pdp11/pdp11.c: Ditto.
* romp/romp.c: Ditto.
* rs6000/rs6000.c: Ditto.
* sh/sh.c: Ditto.
* sparc/sparc.c: Ditto.
* vax/vax.c: Ditto.
* we32k/we32k.c: Ditto.
* doc/tm.texi: Update the manual to match.
2001-07-06 Richard Henderson <rth@redhat.com>
* except.h (MUST_USE_SJLJ_EXCEPTIONS): Examine the value of
DWARF2_UNWIND_INFO not just whether it is defined.
2001-07-06 Diego Novillo <dnovillo@redhat.com>
* combine.c (combine_simplify_rtx): Also recompute 'mode' if the
call to simplify_binary_operation returns a new pattern.
2001-07-06 Roman Lechtchinsky <rl@cs.tu-berlin.de>
* glimits.h (__SHRT_MAX__): New.
(SHRT_MIN, USHRT_MAX): Define in terms of SHRT_MAX.
(SHRT_MAX): Define in terms of __SHRT_MAX__.
2001-07-06 Jan van Male <jan.vanmale@fenk.wau.nl>
* alias.c (base_alias_check): Cast GET_MODE_UNIT_SIZE to int to
avoid warnings.
2001-07-06 Richard Henderson <rth@redhat.com>
* bitmap.c (bitmap_release_memory): Move adjacent to the
allocation functions.
(bitmap_first_set_bit, bitmap_last_set_bit): Streamline knowing
the implementation. Binary search for the set bit.
(bitmap_union_of_diff): Allocate the temporary on the stack
instead of using xmalloc.
2001-07-06 Richard Henderson <rth@redhat.com>
* genrecog.c (validate_pattern): Warn for constraints in
define_{expand,split,peephole2}. Remove strict_low_part
before looking up match_dup.
2001-07-06 DJ Delorie <dj@redhat.com>
* doc/gcc.texi (Makefile): Rename to be a more general purpose
chapter about various build hints and history. Add section
talking about the various types of native and cross builds.
2001-07-06 Neil Booth <neil@daikokuya.demon.co.uk>
* Makefile.in (final.o): Depend on target.h.
* final.c: Include target.h.
(default_function_pro_epilogue): New.
(final_start_function): Use target structure for function prologues.
(final_end_function): Use target structure for function epilogues.
* fold-const.c (real_hex_to_f): Constify s and p.
* output.h (default_function_pro_epilogue): New.
* real.h (real_hex_to_f): Update prototype.
* target-def.h (TARGET_ASM_FUNCTION_PROLOGUE,
TARGET_ASM_FUNCTION_EPILOGUE, TARGET_ASM_OUT): New.
(TARGET_INITIALIZER): Update.
* target.h (gcc_target): Add struct asm_out.
* doc/tm.texi: Update.
config:
Update each arch to use TARGET_ASM_FUNCTION_PROLOGUE and
TARGET_ASM_FUNCTION_EPILOGUE. Move macro code to functions
in cpu/cpu.c, or rename old functions consistently. Take
a HOST_WIDE INT not an int as the SIZE parameter. Remove now
redundant macros and prototypes. Make new functions static.
* 1750a/1750a.c: Similarly.
* 1750a/1750a.h: Similarly.
* a29k/a29k-protos.h: Similarly.
* a29k/a29k.c: Similarly.
* a29k/a29k.h: Similarly.
* arc/arc-protos.h: Similarly.
* arc/arc.c: Similarly.
* arc/arc.h: Similarly.
* arm/arm-protos.h: Similarly.
* arm/arm.c: Similarly.
* arm/arm.h: Similarly.
* avr/avr-protos.h: Similarly.
* avr/avr.c: Similarly.
* avr/avr.h: Similarly.
* clipper/clipper-protos.h: Similarly.
* clipper/clipper.c: Similarly.
* clipper/clipper.h: Similarly.
* convex/convex.c: Similarly.
* convex/convex.h: Similarly.
* d30v/d30v-protos.h: Similarly.
* d30v/d30v.c: Similarly.
* d30v/d30v.h: Similarly.
* d30v/d30v.md: Similarly.
* dsp16xx/dsp16xx-protos.h: Similarly.
* dsp16xx/dsp16xx.c: Similarly.
* dsp16xx/dsp16xx.h: Similarly.
* elxsi/elxsi.c: Similarly.
* elxsi/elxsi.h: Similarly.
* fr30/fr30.c: Similarly.
* fr30/fr30.md: Similarly.
* h8300/h8300-protos.h: Similarly.
* h8300/h8300.c: Similarly.
* h8300/h8300.h: Similarly.
* i370/i370-protos.h: Similarly.
* i370/i370.c: Similarly.
* i370/i370.h: Similarly.
* i386/i386.c: Similarly.
* i386/osf1elf.h: Similarly.
* i386/osfrose.h: Similarly.
* i860/i860-protos.h: Similarly.
* i860/i860.c: Similarly.
* i860/i860.h: Similarly.
* i960/i960-protos.h: Similarly.
* i960/i960.c: Similarly.
* i960/i960.h: Similarly.
* ia64/ia64-protos.h: Similarly.
* ia64/ia64.c: Similarly.
* ia64/ia64.h: Similarly.
* m32r/m32r-protos.h: Similarly.
* m32r/m32r.c: Similarly.
* m32r/m32r.h: Similarly.
* m68hc11/m68hc11-protos.h: Similarly.
* m68hc11/m68hc11.c: Similarly.
* m68hc11/m68hc11.h: Similarly.
* m68k/crds.h: Similarly.
* m68k/dpx2.h: Similarly.
* m68k/m68k-protos.h: Similarly.
* m68k/m68k.c: Similarly.
* m68k/m68k.h: Similarly.
* m68k/news.h: Similarly.
* m88k/m88k-protos.h: Similarly.
* m88k/m88k.c: Similarly.
* m88k/m88k.h: Similarly.
* mips/mips-protos.h: Similarly.
* mips/mips.c: Similarly.
* mips/mips.h: Similarly.
* ns32k/merlin.h: Similarly.
* ns32k/ns32k.c: Similarly.
* ns32k/ns32k.h: Similarly.
* ns32k/tek6000.h: Similarly.
* pa/pa-protos.h: Similarly.
* pa/pa.c: Similarly.
* pa/pa.h: Similarly.
* pdp11/2bsd.h: Similarly.
* pdp11/pdp11-protos.h: Similarly.
* pdp11/pdp11.c: Similarly.
* pdp11/pdp11.h: Similarly.
* romp/romp-protos.h: Similarly.
* romp/romp.c: Similarly.
* romp/romp.h: Similarly.
* rs6000/rs6000-protos.h: Similarly.
* rs6000/rs6000.c: Similarly.
* rs6000/rs6000.h: Similarly.
* rs6000/sysv4.h: Similarly.
* sh/sh-protos.h: Similarly.
* sh/sh.c: Similarly.
* sh/sh.h: Similarly.
* sparc/sparc-protos.h: Similarly.
* sparc/sparc.c: Similarly.
* sparc/sparc.h: Similarly.
* vax/vax.c: Similarly.
* vax/vax.h: Similarly.
* vax/vms.h: Similarly.
* we32k/we32k.c: Similarly.
* we32k/we32k.h: Similarly.
Fri Jul 6 11:47:59 2001 Jeffrey A Law (law@cygnus.com)
* basic-block.h (first_insn_after_basic_block_note): Declare.
* flow.c (first_insn_after_basic_block_note): Define. Moved
from...
* ssa.c (first_insn_after_basic_block_note): Remove.
* ssa-dce.c (find_inherently_necessary): Consider BARRIERs
necessary.
(ssa_eliminate_dead_code): Properly update the CFG and PHI
nodes when we find a dead conditional branch. Insert BARRIERs
after any blocks with no successors, but which do not have
any BARRIERs.
2001-07-06 Zack Weinberg <zackw@stanford.edu>
* varray.c (varray_check_failed): Use internal_error.
2001-07-05 Andrew Haley <aph@redhat.com>
* Makefile.in (LIB2_DIVMOD_FUNCS): New.
(LIB2FUNCS): Move divmod functions to LIB2_DIVMOD_FUNCS.
* mklibgcc.in: Compile LIB2_DIVMOD_FUNCS.
2001-07-02 Jason Merrill <jason_merrill@redhat.com>
* dwarf2out.c (mem_loc_descriptor): Only look through a constant pool
reference if the target constant is also a SYMBOL_REF.
2001-07-05 Eric Christopher <echristo@redhat.com>
* config/mips/mips.h (MASK_MIPS3900): Remove.
(MASK_MIPS16,MASK_NO_CHECK_ZERO_DIV,MASK_CHECK_RANGE_DIV,
MASK_UNINIT_CONST_IN_RODATA): Change for 3900 mask removal.
(TARGET_MIPS3900): Change to use mips_arch.
(TARGET_MIPS4000): New.
(TARGET_MIPS4100): New.
(TARGET_MIPS4300): New.
(TARGET_SWITCHES): Change 3900 and 4650 options to NULL.
(SUBTARGET_TARGET_OPTIONS): Add -march. Change help text
for -mipsX.
(GENERATE_BRANCHLIKELY): Move TARGET_MIPS3900.
(ISA_HAS_BRANCHLIKELY): To here.
(CC1_CPU_SPEC): New.
(CC1_SPEC): Use here. Remove 4650 and 3900 options.
(mips_arch_string): Declare.
(mips_arch): Declare.
(TARGET_OPTIONS): Add -march and -mtune.
* config/mips/mips.c (mips_arch_string): New.
(mips_arch): New.
(override_options): Handle -march for codegen and -mtune
for scheduling. Use mips_arch. Move tx39 target default here.
(mips_parse_cpu): Move error message to override_options.
* config/mips/r3900.h (TARGET_DEFAULT): Remove.
* config/mips/mips.md: Use TARGET_MIPS4000 and TARGET_MIPS4300.
* doc/invoke.texi (Option Summary): Add -march and -mtune entries.
(MIPS Options): Ditto. Change mcpu entry to historical text.
2001-07-05 H.J. Lu (hjl@gnu.org)
* config/mips/mips.c (mips_parse_cpu): New function to parse
-march=*/-mcpu=*.
2001-07-05 Jim Wilson <wilson@redhat.com>
* config/ia64/lib1funcs.asm: Revert 2001-07-02 change.
* config/ia64/t-ia64: Likewise.
(LIB1ASMFUNCS): Update comment.
2001-07-05 David Edelsohn <edelsohn@gnu.org>
* doc/install.texi (Install GCC: Binaries): Fix typo.
2001-07-04 Stephane Carrez <Stephane.Carrez@worldnet.fr>
* config/m68hc11/m68hc11.md ("*ashlsi3"): Operand 1 can be a memory
reference using the stack pointer, adjust it since we push Y
temporarily.
("*ashrsi3"): Likewise.
("*lshrsi3"): Likewise.
2001-07-05 Stephane Carrez <Stephane.Carrez@worldnet.fr>
* config/m68hc11/m68hc11.h (RETURN_ADDR_RTX): Fix return address
when -fomit-frame-pointer is used.
2001-07-05 Jeffrey Oldham <oldham@codesourcery.com>
* flow.c: Reverse Jan Hubicka's patch of 02July2001.
(try_redirect_by_replacing_jump): Reverse updating properly the
count and frequency information. Reverse removing cc0 setter.
(forwarder_block_p): Reverse fixing for fallthru blocks.
2001-07-05 DJ Delorie <dj@redhat.com>
* gcc.c (TARGET_OPTION_TRANSLATE_TABLE): New.
(translate_options): If the above is defined, use it to map
given options to new options.
* doc/tm.texi: Document it.
2001-07-05 Brad Lucier <lucier@math.purdue.edu>
Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at>
* doc/invoke.texi (Optimize Options): Document that -fgcse may
cause programs using computed gotos to run more slowly.
2001-07-05 Rainer Orth <ro@TechFak.Uni-Bielefeld.DE>
* doc/install.texi (Specific): Markup, spelling and typo fixes.
Fixed sorting.
Consistently require binutils 2.11.2, not prereleases.
(Specific, decstation-*): Canonicalize as mips-dec-*.
(Specific, i?86-*-sco3.2v5*): Remove make bootstrap requirement,
always necessary.
(Specific, m68k-altos): Removed reference to README.altos, deleted.
(Specific, mips-*): Reword MIPS C compiler requirements.
(Specific, powerpc*-*-*): New, mention --with-cpu once.
(Specific, sunv5): Removed, obsolete.
2001-07-05 Nathan Sidwell <nathan@codesourcery.com>
* dwarf2out.c (output_loc_list): Use an all ones mask for
.text asm output and don't rely on long long
literals. Reformat some long lines.
2001-07-05 Andreas Jaeger <aj@suse.de>
* doc/gcc.texi (GNU/Linux): Remove accidental re-add of GPL
section.
2001-07-04 Daniel Berlin <dan@cgsoftware.com>
* dwarf2out.c (dwarf2out_define): Update comment.
(dwarf2out_undef): Ditto.
(dwarf2out_start_source_file): Ditto.
(dwarf2out_end_source_file): Ditto.
(dwarf2out_finish): Output DW_MACINFO_end_file for primary file,
since we never call the start/end debug hook for the primary file.
2001-07-04 Kazu Hirata <kazu@hxi.com>
* config/h8300/h8300.c (get_shift_alg): Remove an extra operand
from shll.
2001-07-04 Nathan Sidwell <nathan@codesourcery.com>
* cppinit.c (remove_dup_dirs): Inform if a system include
directory is being reordered.
* doc/invoke.texi (Directory Options): GCC warns if you hide a
system include.
* doc/cpp.texi (Search Paths): Likewise.
* doc/gcc.texi (Interoperation): Remove information about
-I/usr/include.
2001-07-04 Nathan Sidwell <nathan@codesourcery.com>
* varray.h (VARRAY_TOP_GENERIC_PTR): Remove spurious parameter.
(VARRAY_TOP_CHAR_PTR): Likewise.
2001-07-04 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* gcc.c (process_command): Don't assign elements of a const char*.
Wed Jul 4 13:40:02 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* emit-rtl.c (change_address): Don't abort if invalid address while
reload is in progress.
2001-07-04 Daniel Berlin <dan@cgsoftware.com>
* c-lex.c (cb_file_change): Pass line number to
debug_start_source_file.
(cb_undefine): Pass correct line number to debug_undef.
* toplev.c (debug_start_source_file): Add line number to
parameters. Pass it along to dwarf2out_start_source_file.
(decode_g_option): Stop resetting debug level back to normal when
we change debug formats, unless the current level is
none. (Before, -g3 -gdwarf-2 would use debug level 2, rather than
3).
* toplev.h (debug_start_source_file): Add line number to
parameters.
* dwarf2out.h (dwarf2out_start_source_file): Add line number to
parameters.
* dwarf2out.c (dwarf2out_start_source_file): Add line number to
parameters.
Output debug_macinfo data for starting file if requested.
(dwarf2out_end_source_file): Output debug_macinfo data for ending
file if requested.
(dwarf2out_define): Output debug_macinfo data for defining a macro
if requested.
(dwarf2out_undef): Output debug_macinfo data for undefining a
macro if requested.
(DEBUG_MACINFO_SECTION): New. DWARF2 macro info section name.
(DEBUG_MACINFO_SECTION_LABEL): New. DWARF2 macro info section label.
(macinfo_section_label): New. DWARF2 macro info section label.
(dwarf2out_init): If we want macro info, output the start label
for the section.
(dwarf2out_finish): If we want macro info, add a DW_AT_macro_info
attribute to the compilation unit die pointing to the macro info.
2001-07-04 Daniel Berlin <dan@cgsoftware.com>
* dwarf2out.c (new_loc_list): Move to inside #ifdef
DWARF2_DEBUGGING_INFO.
(add_loc_descr_to_loc_list): Ditto.
(output_loc_list): Ditto.
Also, fix thinko in curr not being initialized.
(gen_internal_sym): Ditto.
Wed Jul 4 13:40:02 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* emit-rtl.c (replace_equiv_address): New function.
* expr.h (replace_equiv_address): New declaration.
* explow.c (validize_mem): Call it instead of change_address and
also call if -fforce-addr and address is constant.
* expr.c: Replace more calls to change_address with adjust_address
and/or replace_equiv_address or to validize_mem.
* function.c, regmove.c, config/alpha/alpha.c: Likewise.
* config/arm/arm.md, config/clipper/clipper.md: Likewise.
* config/dsp16xx/dsp16xx.md, config/fr30/fr30.c: Likewise.
* config/i370/i370.md, config/i860/i860.md: Likewise.
* config/i960/i960.md, config/mips/mips.c: Likewise.
* config/mips/mips.md, config/pa/pa.md: Likewise.
* config/pdp11/pdp11.md, config/rs6000/rs6000.c: Likewise.
* config/rs6000/rs6000.md, config/sh/sh.md: Likewise.
2001-07-04 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* bitmap.c (bitmap_union_of_diff): Don't use BITMAP_ALLOCA.
* bitmap.h (BITMAP_ALLOCA): Don't pass alloca as an argument to a
function.
2001-07-04 Joseph S. Myers <jsm28@cam.ac.uk>
* doc/include: New directory.
* doc/fdl.texi: Move to doc/include/fdl.texi.
* doc/texinfo.tex: Move to doc/include/texinfo.tex.
* doc/include/funding.texi, doc/include/gpl.texi: New files.
* doc/gcc.texi: Use funding.texi and gpl.texi.
* Makefile.in ($(docdir)/cpp.info, $(docdir)/gcc.info,
$(docdir)/cppinternals.info, cpp.dvi. gcc.dvi. cppinternals.dvi):
Update dependencies and use -I $(docdir)/include.
2001-07-04 Anthony Green <green@redhat.com>
* config/v850/t-v850 (v850-c.o): Add missing dependencies.
2001-07-04 Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at>
* doc/install.texi (sparc64-*-*): Remove garbage.
Wed Jul 4 09:07:44 2001 Jan van Male <jan.vanmale@fenk.wau.nl>
* i386.c (ix86_expand_builtin, case IX86_BUILTIN_SETPS):
Fix typo in last change to use adjust_address.
2001-07-04 Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at>
* doc/install.texi (Specific): Update information for *-*-solaris*.
Tue Jul 3 22:33:15 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* explow.c (plus_constant_wide): Reinitialize Y for restart.
2001-07-03 Stan Shebs <shebs@apple.com>
* config/darwin.h (SECTION_FUNCTION): Remove WAS_TEXT argument, remove
case for flag_no_mach_text_sections.
(EXTRA_SECTION_FUNCTIONS): Remove arg from uses of SECTION_FUNCTION.
* config/darwin.c (flag_no_mach_text_sections): Remove.
* config/darwin-protos.h (darwin_init_pragma): Remove decl.
Tue Jul 3 15:35:52 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* explow.c (plus_constant_wide, case PLUS): Call find_constant_term
and avoid checking for constant as first operand.
* recog.c (find_constant_term_loc): No longer static.
(adj_offettable_operand): Delete.
* rtl.h (adj_offsettable_operand): Delete declaration.
(find_constant_term): Add declaration.
* caller-save.c: Replace calls to adj_offsettable_operand with calls
to adjust_address.
* config/arm/arm.c, config/c4x/c4x.c: Likewise.
* config/clipper/clipper.md, config/h8300/h8300.c: Likewise.
* config/i386/i386.c, config/i386/i386.md: Likewise.
* config/i860/i860.c, config/i960/i960.c: Likewise.
* config/i960/i960.md, config/m68hc11/m68hc11.c: Likewise.
* config/m68k/m68k.c, config/m68k/m68k.md: Likewise.
* config/m88k/m88k.md, config/mcore/mcore.c: Likewise.
* config/mips/mips.c, config/mips/mips.md: Likewise.
* config/mn10200/mn10200.c, config/mn10300/mn10300.c: Likewise.
* config/ns32k/ns32k.c, config/ns32k/ns32k.md: Likewise.
* config/pa/pa.c, config/pdp11/pdp11.c: Likewise.
* config/pdp11/pdp11.md, config/sh/sh.c, config/v850/v850.c: Likewise.
* config/vax/vax.md, config/ns32k/ns32k.c: Likewise.
* config/ns32k/ns32k.md: Likewise.
2001-07-03 Zack Weinberg <zackw@stanford.edu>
* rtl.c (copy_rtx): Handle 'T' format letter.
* gensupport.c (collect_insn_data): Likewise.
* print-rtl.c (print_rtx): Print 'T' slots like 's'.
2001-07-03 Nick Clifton <nickc@cambridge.redhat.com>
* doc/invoke.texi (Directory Options): Specifiy range for <N> in
-B option. Use 'dir' not 'foo' as example directory name.
2001-07-03 Rainer Orth <ro@TechFak.Uni-Bielefeld.DE>
* config/i386/sol2.h (ASM_PREFERRED_EH_DATA_FORMAT): Define.
Fixes PRs bootstrap/3067, bootstrap/3249, bootstrap/3275.
2001-07-03 Joseph S. Myers <jsm28@cam.ac.uk>
* doc/cppinternals.texi: Improve formatting and logical markup.
2001-07-03 Andreas Jaeger <aj@suse.de>
* Makefile.in (insn-recog.o): Add dependency on reload.h.
* genrecog.c (write_header): Include reload.h for prototypes in
insn-recog.c.
2001-07-03 Neil Booth <neil@daikokuya.demon.co.uk>
config:
* i386/cygwin.h (VALID_MACHINE_DECL_ATTRIBUTE,
VALID_MACHINE_TYPE_ATTRIBUTE): Remove.
* i386/i386-protos.h (i386_pe_valid_decl_attribute_p,
i386_pe_valid_type_attribute_p): Add.
* i386/i386.c (TARGET_INITIALIZER): Override for cygwin targets.
* i386/winnt.c (i386_valid_decl_attribute_p): Return directly.
Mon Jul 2 21:52:19 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* explow.c (plus_constant_wide, case LO_SUM): New case.
(plus_constant_for_output_wide): Delete.
* rtl.h (plus_constant_for_output): Delete.
* alias.c (canon_rtx, init_alias_analysis): Call plus_constant
instead of plus_constant_for_output.
* recog.c (offsettable_address_p, adj_offsettable_operand): Likewise.
* config/darwin.c, config/arm/arm.c, config/m68k/m68k.c: Likewise.
* config/m88k/m88k.c, config/mips/mips.c, config/pa/pa.c: Likewise.
* config/rs6000/rs6000.c, config/sparc/sparc.c: Likewise.
* config/sparc/sparc.md: Likewise.
Convert some change_address calls to adjust_address.
2001-07-03 Joseph S. Myers <jsm28@cam.ac.uk>
* doc/extend.texi, doc/gcc.texi, doc/invoke.texi, doc/md.texi,
doc/rtl.texi, doc/tm.texi: Improve formatting. Improve
documentation of -std and -Wwrite-strings.
2001-07-02 Geoffrey Keating <geoffk@redhat.com>
* cse.c (canon_hash): Don't register registers in very small
register classes, as extending their lifetime might cause
reload to fail.
Mon Jul 2 23:14:00 CEST 2001 Jan Hubicka <jh@suse.cz>
* flow.c (try_redirect_by_replacing_jump): Remove cc0 setter.
* flow.c (forwarder_block_p): Fix for fallthru blocks.
(try_redirect_by_replacing_jump): Update properly the count
and frequency information.
Mon Jul 2 14:20:13 2001 Jeffrey A Law (law@cygnus.com)
* toplev.c (dump_file_index): Move SSA dumps just after first
jump dump.
(dump_file): Corresponding changes.
(rest_of_compilation): Move SSA path to just after the first
jump pass.
* doc/gcc.texi (Passes): Update due to movement of SSA path.
* doc/invoke.texi: Update dump file #s as they were completely
out of date with reality.
2001-07-02 Geoffrey Keating <geoffk@redhat.com>
* doc/tm.texi (Frame Layout): Document STACK_PUSH_CODE.
* expr.c (emit_move_insn_1): Deal with non-default
STACK_PUSH_CODE.
* expr.c (emit_single_push_insn): Fix warning.
2001-07-02 Toshiyasu Morita <toshiyasu.morita@hsa.hitachi.com>
* expr.c (emit_move_insn_1): Avoid modifying
cfun->expr->x_stack_pointer when PUSH_ROUNDING is defined.
Mon Jul 2 15:33:31 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* emit-rtl.c (adjust_address): New function.
* expr.h (adjust_address): Add declaration.
* builtins.c: Replace some calls to change_address with calls to it
or to validize_mem.
* caller-save.c, dwarf2out.c, except.c, expmed.c, expr.c: Likewise.
* function.c, config/a29k/a29k.md, config/alpha/alpha.c: Likewise.
* config/arm/arm.c, config/convex/convex.c: Likewise.
* config/dsp16xx/dsp16xx.md, config/fr30/fr30.c: Likewise.
* config/i386/i386.c, config/i386/i386.md: Likewise.
* config/ia64/ia64.c, config/ia64/ia64.md: Likewise.
* config/m32r/m32r.c, config/m68k/m68k.md: Likewise.
* config/m88k/m88k.c, config/mips/mips.md: Likewise.
* config/ns32k/ns32k.c, config/rs6000/rs6000.c: Likewise.
* config/sh/sh.c, config/sparc/sparc.md: Likewise.
2001-07-02 Jim Wilson <wilson@redhat.com>
* config/ia64/ia64.h: Delete obsolete lib1funcs.asm comment.
2001-07-02 Steve Ellcey <sje@cup.hp.com>
* config/ia64/t-ia64: Change LIB1ASMFUNCS to use single underscore.
* config/ia64/lib1funcs.asm: Change macro names to match t-ia64.
2001-07-02 Zack Weinberg <zackw@stanford.edu>
* cppinit.c (lang_defaults): New table.
(set_lang): Just read from lang_defaults into the live options
structure.
2001-07-02 Zack Weinberg <zackw@stanford.edu>
* Makefile.in (doc): Depend on $(GENERATED_MANPAGES).
* doc/.cvsignore: Add gcc.1, cpp.1, gcov.1.
* doc/gcc.1, doc/cpp.1, doc/gcov.1: Removed.
2001-07-02 Rainer Orth <ro@TechFak.Uni-Bielefeld.DE>
* doc/install.texi: Various spelling and markup fixes.
(Installing GCC): Component specific installation instructions are
gone.
Fix reference.
Warn about removing old install dir in the presence of shared libs.
(Configuration): Invoke with options target to match configure
--help.
Consistently refer to gas, gld pathnames.
Invert --enable-multilib documentation.
Remove references to old compiler versions.
Mon Jul 2 12:50:51 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* flow.c (try_simplify_condjump): Fix typo in updating fallthru flags.
2001-07-02 Rainer Orth <ro@TechFak.Uni-Bielefeld.DE>
* doc/install.texi (Specific, mips*-sgi-irix4): Split from IRIX 5
section.
(Specific, mips*-sgi-irix5): Note IDO download.
Reworded MIPS C hints.
Use GNU as instead of GAS.
Markup fixes.
Removed SGI Freeware reference, IRIX 6 only.
(Specific, mips*-sgi-irix6): Removed ranlib caveats, obsolete.
Note N64 library requirement/workaround.
Update O32 hints.
Complete list of structure passing bug victims.
2001-07-02 Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at>
* doc/install.texi: Remove CVS Id.
2001-07-02 Andreas Jaeger <aj@suse.de>
* ssa-dce.c (note_inherently_necessary_set): Add unused attribute.
(find_inherently_necessary): Remove unused variable.
2001-07-02 Nathan Sidwell <nathan@codesourcery.com>
* c-common.h (TDI_inlined): New ast dump phase.
(dump_flag_name): New function.
* c-dump.c (dump_files): Add inlined phase.
(dump_flag_name): Define.
* doc/invoke.texi (-fdump-ast-inlined): Document.
Mon Jul 2 06:29:36 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* stor-layout.c (layout_decl): Revert change to handling of alignment
in packed types.
Sun Jul 1 11:53:52 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* c-common.c (decl_attributes, case A_MODE): Don't call layout_decl
for FIELD_DECL.
2001-07-01 Geoffrey Keating <geoffk@redhat.com>
* doc/tm.texi (FUNCTION_ARG): Document that the last call
is special.
2001-07-01 Nathan Sidwell <nathan@codesourcery.com>
* tlink.c (recompile_files): Remove COMPILER_PATH and
LIBRARY_PATH from the environment.
2001-07-01 Zack Weinberg <zackw@stanford.edu>
* c-common.h (enum rid): Add RID_FIRST_AT, RID_LAST_AT,
RID_LAST_PQ. Move RID_FIRST_PQ down with the other FIRST/LAST
enumerators.
(OBJC_IS_AT_KEYWORD, OBJC_IS_PQ_KEYWORD): New macros.
* c-parse.in (OBJC_STRING): Kill.
(objc_string): Decompose to [objc_string] '@' STRING.
(reswords): Take the leading '@' off all the Objective C keywords.
(objc_rid_sans_at): Kill.
(init_reswords): Don't initialize it.
(yylexname): Use OBJC_IS_AT_KEYWORD and OBJC_IS_PQ_KEYWORD.
(_yylex): Kill reconsider label. Look ahead one token after
an '@'; if we get an identifier, check whether it's an
Objective C @-keyword. If so, return the keyword. Otherwise,
put back the token and return the '@' as a terminal.
* cpplib.c (lex_macro_node): Remove unnecessary check for
leading '@' on identifier. Clarify control flow and commentary.
Sun Jul 1 11:53:52 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* cse.c (new_label_ref): Variable deleted.
(insert): Remove set of new_label_ref.
(check_for_label_ref): New function.
(cse_basic_block): Don't check new_label_ref; call check_for_label_ref.
See ChangeLog.5 for earlier changes.
From-SVN: r43861
2001-07-09 13:20:51 +02:00
|
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mem_elt->locs
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|
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= new_elt_loc_list (mem_elt->locs,
|
|
|
|
|
replace_equiv_address_nv (x, addr_elt->u.val_rtx));
|
2003-03-11 22:52:42 +01:00
|
|
|
|
if (mem_elt->next_containing_mem == NULL)
|
|
|
|
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{
|
|
|
|
|
mem_elt->next_containing_mem = first_containing_mem;
|
|
|
|
|
first_containing_mem = mem_elt;
|
|
|
|
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}
|
2001-02-13 00:15:38 +01:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Subroutine of cselib_lookup. Return a value for X, which is a MEM rtx.
|
|
|
|
|
If CREATE, make a new one if we haven't seen it before. */
|
|
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|
|
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|
static cselib_val *
|
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cselib_lookup_mem (x, create)
|
|
|
|
|
rtx x;
|
|
|
|
|
int create;
|
|
|
|
|
{
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|
|
enum machine_mode mode = GET_MODE (x);
|
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|
|
|
void **slot;
|
|
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|
|
cselib_val *addr;
|
|
|
|
|
cselib_val *mem_elt;
|
|
|
|
|
struct elt_list *l;
|
|
|
|
|
|
|
|
|
|
if (MEM_VOLATILE_P (x) || mode == BLKmode
|
|
|
|
|
|| (FLOAT_MODE_P (mode) && flag_float_store))
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
/* Look up the value for the address. */
|
|
|
|
|
addr = cselib_lookup (XEXP (x, 0), mode, create);
|
|
|
|
|
if (! addr)
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
/* Find a value that describes a value of our mode at that address. */
|
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|
|
for (l = addr->addr_list; l; l = l->next)
|
|
|
|
|
if (GET_MODE (l->elt->u.val_rtx) == mode)
|
|
|
|
|
return l->elt;
|
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|
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|
|
if (! create)
|
|
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|
return 0;
|
|
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|
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|
|
|
mem_elt = new_cselib_val (++next_unknown_value, mode);
|
|
|
|
|
add_mem_for_addr (addr, mem_elt, x);
|
|
|
|
|
slot = htab_find_slot_with_hash (hash_table, wrap_constant (mode, x),
|
|
|
|
|
mem_elt->value, INSERT);
|
|
|
|
|
*slot = mem_elt;
|
|
|
|
|
return mem_elt;
|
|
|
|
|
}
|
|
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|
|
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|
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|
/* Walk rtx X and replace all occurrences of REG and MEM subexpressions
|
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|
|
with VALUE expressions. This way, it becomes independent of changes
|
|
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|
|
to registers and memory.
|
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|
X isn't actually modified; if modifications are needed, new rtl is
|
|
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|
|
allocated. However, the return value can share rtl with X. */
|
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|
2001-08-08 12:38:57 +02:00
|
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|
|
rtx
|
2001-02-13 00:15:38 +01:00
|
|
|
|
cselib_subst_to_values (x)
|
|
|
|
|
rtx x;
|
|
|
|
|
{
|
|
|
|
|
enum rtx_code code = GET_CODE (x);
|
|
|
|
|
const char *fmt = GET_RTX_FORMAT (code);
|
|
|
|
|
cselib_val *e;
|
|
|
|
|
struct elt_list *l;
|
|
|
|
|
rtx copy = x;
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
switch (code)
|
|
|
|
|
{
|
|
|
|
|
case REG:
|
|
|
|
|
for (l = REG_VALUES (REGNO (x)); l; l = l->next)
|
|
|
|
|
if (GET_MODE (l->elt->u.val_rtx) == GET_MODE (x))
|
|
|
|
|
return l->elt->u.val_rtx;
|
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|
|
abort ();
|
|
|
|
|
|
|
|
|
|
case MEM:
|
|
|
|
|
e = cselib_lookup_mem (x, 0);
|
|
|
|
|
if (! e)
|
2001-08-08 12:38:57 +02:00
|
|
|
|
{
|
|
|
|
|
/* This happens for autoincrements. Assign a value that doesn't
|
|
|
|
|
match any other. */
|
|
|
|
|
e = new_cselib_val (++next_unknown_value, GET_MODE (x));
|
|
|
|
|
}
|
2001-02-13 00:15:38 +01:00
|
|
|
|
return e->u.val_rtx;
|
|
|
|
|
|
|
|
|
|
case CONST_DOUBLE:
|
2002-02-19 03:53:41 +01:00
|
|
|
|
case CONST_VECTOR:
|
2001-02-13 00:15:38 +01:00
|
|
|
|
case CONST_INT:
|
|
|
|
|
return x;
|
|
|
|
|
|
2001-08-08 12:38:57 +02:00
|
|
|
|
case POST_INC:
|
|
|
|
|
case PRE_INC:
|
|
|
|
|
case POST_DEC:
|
|
|
|
|
case PRE_DEC:
|
|
|
|
|
case POST_MODIFY:
|
|
|
|
|
case PRE_MODIFY:
|
|
|
|
|
e = new_cselib_val (++next_unknown_value, GET_MODE (x));
|
|
|
|
|
return e->u.val_rtx;
|
|
|
|
|
|
2001-02-13 00:15:38 +01:00
|
|
|
|
default:
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
|
|
|
|
|
{
|
|
|
|
|
if (fmt[i] == 'e')
|
|
|
|
|
{
|
|
|
|
|
rtx t = cselib_subst_to_values (XEXP (x, i));
|
|
|
|
|
|
|
|
|
|
if (t != XEXP (x, i) && x == copy)
|
|
|
|
|
copy = shallow_copy_rtx (x);
|
|
|
|
|
|
|
|
|
|
XEXP (copy, i) = t;
|
|
|
|
|
}
|
|
|
|
|
else if (fmt[i] == 'E')
|
|
|
|
|
{
|
|
|
|
|
int j, k;
|
|
|
|
|
|
|
|
|
|
for (j = 0; j < XVECLEN (x, i); j++)
|
|
|
|
|
{
|
|
|
|
|
rtx t = cselib_subst_to_values (XVECEXP (x, i, j));
|
|
|
|
|
|
|
|
|
|
if (t != XVECEXP (x, i, j) && XVEC (x, i) == XVEC (copy, i))
|
|
|
|
|
{
|
|
|
|
|
if (x == copy)
|
|
|
|
|
copy = shallow_copy_rtx (x);
|
|
|
|
|
|
|
|
|
|
XVEC (copy, i) = rtvec_alloc (XVECLEN (x, i));
|
|
|
|
|
for (k = 0; k < j; k++)
|
|
|
|
|
XVECEXP (copy, i, k) = XVECEXP (x, i, k);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
XVECEXP (copy, i, j) = t;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return copy;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Look up the rtl expression X in our tables and return the value it has.
|
|
|
|
|
If CREATE is zero, we return NULL if we don't know the value. Otherwise,
|
|
|
|
|
we create a new one if possible, using mode MODE if X doesn't have a mode
|
|
|
|
|
(i.e. because it's a constant). */
|
|
|
|
|
|
|
|
|
|
cselib_val *
|
|
|
|
|
cselib_lookup (x, mode, create)
|
|
|
|
|
rtx x;
|
|
|
|
|
enum machine_mode mode;
|
|
|
|
|
int create;
|
|
|
|
|
{
|
|
|
|
|
void **slot;
|
|
|
|
|
cselib_val *e;
|
|
|
|
|
unsigned int hashval;
|
|
|
|
|
|
|
|
|
|
if (GET_MODE (x) != VOIDmode)
|
|
|
|
|
mode = GET_MODE (x);
|
|
|
|
|
|
|
|
|
|
if (GET_CODE (x) == VALUE)
|
|
|
|
|
return CSELIB_VAL_PTR (x);
|
|
|
|
|
|
|
|
|
|
if (GET_CODE (x) == REG)
|
|
|
|
|
{
|
|
|
|
|
struct elt_list *l;
|
|
|
|
|
unsigned int i = REGNO (x);
|
|
|
|
|
|
|
|
|
|
for (l = REG_VALUES (i); l; l = l->next)
|
|
|
|
|
if (mode == GET_MODE (l->elt->u.val_rtx))
|
|
|
|
|
return l->elt;
|
|
|
|
|
|
|
|
|
|
if (! create)
|
|
|
|
|
return 0;
|
|
|
|
|
|
2002-05-21 09:55:22 +02:00
|
|
|
|
if (i < FIRST_PSEUDO_REGISTER)
|
|
|
|
|
{
|
|
|
|
|
unsigned int n = HARD_REGNO_NREGS (i, mode);
|
|
|
|
|
|
|
|
|
|
if (n > max_value_regs)
|
|
|
|
|
max_value_regs = n;
|
|
|
|
|
}
|
|
|
|
|
|
2001-02-13 00:15:38 +01:00
|
|
|
|
e = new_cselib_val (++next_unknown_value, GET_MODE (x));
|
|
|
|
|
e->locs = new_elt_loc_list (e->locs, x);
|
|
|
|
|
if (REG_VALUES (i) == 0)
|
|
|
|
|
VARRAY_PUSH_UINT (used_regs, i);
|
|
|
|
|
REG_VALUES (i) = new_elt_list (REG_VALUES (i), e);
|
|
|
|
|
slot = htab_find_slot_with_hash (hash_table, x, e->value, INSERT);
|
|
|
|
|
*slot = e;
|
|
|
|
|
return e;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (GET_CODE (x) == MEM)
|
|
|
|
|
return cselib_lookup_mem (x, create);
|
|
|
|
|
|
|
|
|
|
hashval = hash_rtx (x, mode, create);
|
|
|
|
|
/* Can't even create if hashing is not possible. */
|
|
|
|
|
if (! hashval)
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
slot = htab_find_slot_with_hash (hash_table, wrap_constant (mode, x),
|
|
|
|
|
hashval, create ? INSERT : NO_INSERT);
|
|
|
|
|
if (slot == 0)
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
e = (cselib_val *) *slot;
|
|
|
|
|
if (e)
|
|
|
|
|
return e;
|
|
|
|
|
|
|
|
|
|
e = new_cselib_val (hashval, mode);
|
|
|
|
|
|
|
|
|
|
/* We have to fill the slot before calling cselib_subst_to_values:
|
|
|
|
|
the hash table is inconsistent until we do so, and
|
|
|
|
|
cselib_subst_to_values will need to do lookups. */
|
|
|
|
|
*slot = (void *) e;
|
|
|
|
|
e->locs = new_elt_loc_list (e->locs, cselib_subst_to_values (x));
|
|
|
|
|
return e;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Invalidate any entries in reg_values that overlap REGNO. This is called
|
|
|
|
|
if REGNO is changing. MODE is the mode of the assignment to REGNO, which
|
|
|
|
|
is used to determine how many hard registers are being changed. If MODE
|
|
|
|
|
is VOIDmode, then only REGNO is being changed; this is used when
|
|
|
|
|
invalidating call clobbered registers across a call. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
cselib_invalidate_regno (regno, mode)
|
|
|
|
|
unsigned int regno;
|
|
|
|
|
enum machine_mode mode;
|
|
|
|
|
{
|
|
|
|
|
unsigned int endregno;
|
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
|
|
/* If we see pseudos after reload, something is _wrong_. */
|
|
|
|
|
if (reload_completed && regno >= FIRST_PSEUDO_REGISTER
|
|
|
|
|
&& reg_renumber[regno] >= 0)
|
|
|
|
|
abort ();
|
|
|
|
|
|
|
|
|
|
/* Determine the range of registers that must be invalidated. For
|
|
|
|
|
pseudos, only REGNO is affected. For hard regs, we must take MODE
|
|
|
|
|
into account, and we must also invalidate lower register numbers
|
|
|
|
|
if they contain values that overlap REGNO. */
|
|
|
|
|
if (regno < FIRST_PSEUDO_REGISTER && mode != VOIDmode)
|
2002-05-21 09:55:22 +02:00
|
|
|
|
{
|
|
|
|
|
if (regno < max_value_regs)
|
|
|
|
|
i = 0;
|
|
|
|
|
else
|
|
|
|
|
i = regno - max_value_regs;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
2002-05-21 09:55:22 +02:00
|
|
|
|
endregno = regno + HARD_REGNO_NREGS (regno, mode);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
i = regno;
|
|
|
|
|
endregno = regno + 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
for (; i < endregno; i++)
|
2001-02-13 00:15:38 +01:00
|
|
|
|
{
|
|
|
|
|
struct elt_list **l = ®_VALUES (i);
|
|
|
|
|
|
|
|
|
|
/* Go through all known values for this reg; if it overlaps the range
|
|
|
|
|
we're invalidating, remove the value. */
|
|
|
|
|
while (*l)
|
|
|
|
|
{
|
|
|
|
|
cselib_val *v = (*l)->elt;
|
|
|
|
|
struct elt_loc_list **p;
|
|
|
|
|
unsigned int this_last = i;
|
|
|
|
|
|
|
|
|
|
if (i < FIRST_PSEUDO_REGISTER)
|
|
|
|
|
this_last += HARD_REGNO_NREGS (i, GET_MODE (v->u.val_rtx)) - 1;
|
|
|
|
|
|
|
|
|
|
if (this_last < regno)
|
|
|
|
|
{
|
|
|
|
|
l = &(*l)->next;
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* We have an overlap. */
|
|
|
|
|
unchain_one_elt_list (l);
|
|
|
|
|
|
|
|
|
|
/* Now, we clear the mapping from value to reg. It must exist, so
|
|
|
|
|
this code will crash intentionally if it doesn't. */
|
|
|
|
|
for (p = &v->locs; ; p = &(*p)->next)
|
|
|
|
|
{
|
|
|
|
|
rtx x = (*p)->loc;
|
|
|
|
|
|
|
|
|
|
if (GET_CODE (x) == REG && REGNO (x) == i)
|
|
|
|
|
{
|
|
|
|
|
unchain_one_elt_loc_list (p);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if (v->locs == 0)
|
|
|
|
|
n_useless_values++;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* The memory at address MEM_BASE is being changed.
|
|
|
|
|
Return whether this change will invalidate VAL. */
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
cselib_mem_conflict_p (mem_base, val)
|
|
|
|
|
rtx mem_base;
|
|
|
|
|
rtx val;
|
|
|
|
|
{
|
|
|
|
|
enum rtx_code code;
|
|
|
|
|
const char *fmt;
|
|
|
|
|
int i, j;
|
|
|
|
|
|
|
|
|
|
code = GET_CODE (val);
|
|
|
|
|
switch (code)
|
|
|
|
|
{
|
2001-08-01 19:57:27 +02:00
|
|
|
|
/* Get rid of a few simple cases quickly. */
|
2001-02-13 00:15:38 +01:00
|
|
|
|
case REG:
|
|
|
|
|
case PC:
|
|
|
|
|
case CC0:
|
|
|
|
|
case SCRATCH:
|
|
|
|
|
case CONST:
|
|
|
|
|
case CONST_INT:
|
|
|
|
|
case CONST_DOUBLE:
|
2002-02-19 03:53:41 +01:00
|
|
|
|
case CONST_VECTOR:
|
2001-02-13 00:15:38 +01:00
|
|
|
|
case SYMBOL_REF:
|
|
|
|
|
case LABEL_REF:
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
case MEM:
|
|
|
|
|
if (GET_MODE (mem_base) == BLKmode
|
|
|
|
|
|| GET_MODE (val) == BLKmode
|
|
|
|
|
|| anti_dependence (val, mem_base))
|
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
|
|
/* The address may contain nested MEMs. */
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fmt = GET_RTX_FORMAT (code);
|
|
|
|
|
for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
|
|
|
|
|
{
|
|
|
|
|
if (fmt[i] == 'e')
|
|
|
|
|
{
|
|
|
|
|
if (cselib_mem_conflict_p (mem_base, XEXP (val, i)))
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
else if (fmt[i] == 'E')
|
|
|
|
|
for (j = 0; j < XVECLEN (val, i); j++)
|
|
|
|
|
if (cselib_mem_conflict_p (mem_base, XVECEXP (val, i, j)))
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2003-03-11 22:52:42 +01:00
|
|
|
|
/* Invalidate any locations in the table which are changed because of a
|
|
|
|
|
store to MEM_RTX. If this is called because of a non-const call
|
|
|
|
|
instruction, MEM_RTX is (mem:BLK const0_rtx). */
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
2003-03-11 22:52:42 +01:00
|
|
|
|
static void
|
|
|
|
|
cselib_invalidate_mem (mem_rtx)
|
|
|
|
|
rtx mem_rtx;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
{
|
2003-03-11 22:52:42 +01:00
|
|
|
|
cselib_val **vp, *v, *next;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
2003-03-11 22:52:42 +01:00
|
|
|
|
vp = &first_containing_mem;
|
|
|
|
|
for (v = *vp; v != &dummy_val; v = next)
|
2001-02-13 00:15:38 +01:00
|
|
|
|
{
|
2003-03-11 22:52:42 +01:00
|
|
|
|
bool has_mem = false;
|
|
|
|
|
struct elt_loc_list **p = &v->locs;
|
|
|
|
|
int had_locs = v->locs != 0;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
2003-03-11 22:52:42 +01:00
|
|
|
|
while (*p)
|
2001-02-13 00:15:38 +01:00
|
|
|
|
{
|
2003-03-11 22:52:42 +01:00
|
|
|
|
rtx x = (*p)->loc;
|
|
|
|
|
cselib_val *addr;
|
|
|
|
|
struct elt_list **mem_chain;
|
|
|
|
|
|
|
|
|
|
/* MEMs may occur in locations only at the top level; below
|
|
|
|
|
that every MEM or REG is substituted by its VALUE. */
|
|
|
|
|
if (GET_CODE (x) != MEM)
|
2001-02-13 00:15:38 +01:00
|
|
|
|
{
|
2003-03-11 22:52:42 +01:00
|
|
|
|
p = &(*p)->next;
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
if (! cselib_mem_conflict_p (mem_rtx, x))
|
|
|
|
|
{
|
|
|
|
|
has_mem = true;
|
|
|
|
|
p = &(*p)->next;
|
|
|
|
|
continue;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
}
|
|
|
|
|
|
2003-03-11 22:52:42 +01:00
|
|
|
|
/* This one overlaps. */
|
|
|
|
|
/* We must have a mapping from this MEM's address to the
|
|
|
|
|
value (E). Remove that, too. */
|
|
|
|
|
addr = cselib_lookup (XEXP (x, 0), VOIDmode, 0);
|
|
|
|
|
mem_chain = &addr->addr_list;
|
|
|
|
|
for (;;)
|
|
|
|
|
{
|
|
|
|
|
if ((*mem_chain)->elt == v)
|
|
|
|
|
{
|
|
|
|
|
unchain_one_elt_list (mem_chain);
|
|
|
|
|
break;
|
|
|
|
|
}
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
2003-03-11 22:52:42 +01:00
|
|
|
|
mem_chain = &(*mem_chain)->next;
|
|
|
|
|
}
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
2003-03-11 22:52:42 +01:00
|
|
|
|
unchain_one_elt_loc_list (p);
|
|
|
|
|
}
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
2003-03-11 22:52:42 +01:00
|
|
|
|
if (had_locs && v->locs == 0)
|
|
|
|
|
n_useless_values++;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
2003-03-11 22:52:42 +01:00
|
|
|
|
next = v->next_containing_mem;
|
|
|
|
|
if (has_mem)
|
|
|
|
|
{
|
|
|
|
|
*vp = v;
|
|
|
|
|
vp = &(*vp)->next_containing_mem;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
v->next_containing_mem = NULL;
|
|
|
|
|
}
|
|
|
|
|
*vp = &dummy_val;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Invalidate DEST, which is being assigned to or clobbered. The second and
|
|
|
|
|
the third parameter exist so that this function can be passed to
|
|
|
|
|
note_stores; they are ignored. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
cselib_invalidate_rtx (dest, ignore, data)
|
|
|
|
|
rtx dest;
|
|
|
|
|
rtx ignore ATTRIBUTE_UNUSED;
|
|
|
|
|
void *data ATTRIBUTE_UNUSED;
|
|
|
|
|
{
|
|
|
|
|
while (GET_CODE (dest) == STRICT_LOW_PART || GET_CODE (dest) == SIGN_EXTRACT
|
|
|
|
|
|| GET_CODE (dest) == ZERO_EXTRACT || GET_CODE (dest) == SUBREG)
|
|
|
|
|
dest = XEXP (dest, 0);
|
|
|
|
|
|
|
|
|
|
if (GET_CODE (dest) == REG)
|
|
|
|
|
cselib_invalidate_regno (REGNO (dest), GET_MODE (dest));
|
|
|
|
|
else if (GET_CODE (dest) == MEM)
|
|
|
|
|
cselib_invalidate_mem (dest);
|
|
|
|
|
|
|
|
|
|
/* Some machines don't define AUTO_INC_DEC, but they still use push
|
|
|
|
|
instructions. We need to catch that case here in order to
|
|
|
|
|
invalidate the stack pointer correctly. Note that invalidating
|
|
|
|
|
the stack pointer is different from invalidating DEST. */
|
|
|
|
|
if (push_operand (dest, GET_MODE (dest)))
|
|
|
|
|
cselib_invalidate_rtx (stack_pointer_rtx, NULL_RTX, NULL);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Record the result of a SET instruction. DEST is being set; the source
|
|
|
|
|
contains the value described by SRC_ELT. If DEST is a MEM, DEST_ADDR_ELT
|
|
|
|
|
describes its address. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
cselib_record_set (dest, src_elt, dest_addr_elt)
|
|
|
|
|
rtx dest;
|
|
|
|
|
cselib_val *src_elt, *dest_addr_elt;
|
|
|
|
|
{
|
|
|
|
|
int dreg = GET_CODE (dest) == REG ? (int) REGNO (dest) : -1;
|
|
|
|
|
|
|
|
|
|
if (src_elt == 0 || side_effects_p (dest))
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
if (dreg >= 0)
|
|
|
|
|
{
|
|
|
|
|
if (REG_VALUES (dreg) == 0)
|
|
|
|
|
VARRAY_PUSH_UINT (used_regs, dreg);
|
|
|
|
|
|
2002-05-21 09:55:22 +02:00
|
|
|
|
if (dreg < FIRST_PSEUDO_REGISTER)
|
|
|
|
|
{
|
|
|
|
|
unsigned int n = HARD_REGNO_NREGS (dreg, GET_MODE (dest));
|
|
|
|
|
|
|
|
|
|
if (n > max_value_regs)
|
|
|
|
|
max_value_regs = n;
|
|
|
|
|
}
|
|
|
|
|
|
2001-02-13 00:15:38 +01:00
|
|
|
|
REG_VALUES (dreg) = new_elt_list (REG_VALUES (dreg), src_elt);
|
|
|
|
|
if (src_elt->locs == 0)
|
|
|
|
|
n_useless_values--;
|
|
|
|
|
src_elt->locs = new_elt_loc_list (src_elt->locs, dest);
|
|
|
|
|
}
|
|
|
|
|
else if (GET_CODE (dest) == MEM && dest_addr_elt != 0)
|
|
|
|
|
{
|
|
|
|
|
if (src_elt->locs == 0)
|
|
|
|
|
n_useless_values--;
|
|
|
|
|
add_mem_for_addr (dest_addr_elt, src_elt, dest);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Describe a single set that is part of an insn. */
|
|
|
|
|
struct set
|
|
|
|
|
{
|
|
|
|
|
rtx src;
|
|
|
|
|
rtx dest;
|
|
|
|
|
cselib_val *src_elt;
|
|
|
|
|
cselib_val *dest_addr_elt;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* There is no good way to determine how many elements there can be
|
|
|
|
|
in a PARALLEL. Since it's fairly cheap, use a really large number. */
|
|
|
|
|
#define MAX_SETS (FIRST_PSEUDO_REGISTER * 2)
|
|
|
|
|
|
|
|
|
|
/* Record the effects of any sets in INSN. */
|
|
|
|
|
static void
|
|
|
|
|
cselib_record_sets (insn)
|
|
|
|
|
rtx insn;
|
|
|
|
|
{
|
|
|
|
|
int n_sets = 0;
|
|
|
|
|
int i;
|
|
|
|
|
struct set sets[MAX_SETS];
|
|
|
|
|
rtx body = PATTERN (insn);
|
2001-08-08 12:00:56 +02:00
|
|
|
|
rtx cond = 0;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|
|
|
|
|
body = PATTERN (insn);
|
2001-08-08 12:00:56 +02:00
|
|
|
|
if (GET_CODE (body) == COND_EXEC)
|
|
|
|
|
{
|
|
|
|
|
cond = COND_EXEC_TEST (body);
|
|
|
|
|
body = COND_EXEC_CODE (body);
|
|
|
|
|
}
|
|
|
|
|
|
2001-02-13 00:15:38 +01:00
|
|
|
|
/* Find all sets. */
|
|
|
|
|
if (GET_CODE (body) == SET)
|
|
|
|
|
{
|
|
|
|
|
sets[0].src = SET_SRC (body);
|
|
|
|
|
sets[0].dest = SET_DEST (body);
|
|
|
|
|
n_sets = 1;
|
|
|
|
|
}
|
|
|
|
|
else if (GET_CODE (body) == PARALLEL)
|
|
|
|
|
{
|
|
|
|
|
/* Look through the PARALLEL and record the values being
|
|
|
|
|
set, if possible. Also handle any CLOBBERs. */
|
|
|
|
|
for (i = XVECLEN (body, 0) - 1; i >= 0; --i)
|
|
|
|
|
{
|
|
|
|
|
rtx x = XVECEXP (body, 0, i);
|
|
|
|
|
|
|
|
|
|
if (GET_CODE (x) == SET)
|
|
|
|
|
{
|
|
|
|
|
sets[n_sets].src = SET_SRC (x);
|
|
|
|
|
sets[n_sets].dest = SET_DEST (x);
|
|
|
|
|
n_sets++;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Look up the values that are read. Do this before invalidating the
|
|
|
|
|
locations that are written. */
|
|
|
|
|
for (i = 0; i < n_sets; i++)
|
|
|
|
|
{
|
|
|
|
|
rtx dest = sets[i].dest;
|
|
|
|
|
|
|
|
|
|
/* A STRICT_LOW_PART can be ignored; we'll record the equivalence for
|
|
|
|
|
the low part after invalidating any knowledge about larger modes. */
|
|
|
|
|
if (GET_CODE (sets[i].dest) == STRICT_LOW_PART)
|
|
|
|
|
sets[i].dest = dest = XEXP (dest, 0);
|
|
|
|
|
|
|
|
|
|
/* We don't know how to record anything but REG or MEM. */
|
|
|
|
|
if (GET_CODE (dest) == REG || GET_CODE (dest) == MEM)
|
|
|
|
|
{
|
2001-08-08 12:00:56 +02:00
|
|
|
|
rtx src = sets[i].src;
|
|
|
|
|
if (cond)
|
|
|
|
|
src = gen_rtx_IF_THEN_ELSE (GET_MODE (src), cond, src, dest);
|
2002-01-30 00:15:24 +01:00
|
|
|
|
sets[i].src_elt = cselib_lookup (src, GET_MODE (dest), 1);
|
2001-02-13 00:15:38 +01:00
|
|
|
|
if (GET_CODE (dest) == MEM)
|
|
|
|
|
sets[i].dest_addr_elt = cselib_lookup (XEXP (dest, 0), Pmode, 1);
|
|
|
|
|
else
|
|
|
|
|
sets[i].dest_addr_elt = 0;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Invalidate all locations written by this insn. Note that the elts we
|
|
|
|
|
looked up in the previous loop aren't affected, just some of their
|
|
|
|
|
locations may go away. */
|
|
|
|
|
note_stores (body, cselib_invalidate_rtx, NULL);
|
|
|
|
|
|
|
|
|
|
/* Now enter the equivalences in our tables. */
|
|
|
|
|
for (i = 0; i < n_sets; i++)
|
|
|
|
|
{
|
|
|
|
|
rtx dest = sets[i].dest;
|
|
|
|
|
if (GET_CODE (dest) == REG || GET_CODE (dest) == MEM)
|
|
|
|
|
cselib_record_set (dest, sets[i].src_elt, sets[i].dest_addr_elt);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Record the effects of INSN. */
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
cselib_process_insn (insn)
|
|
|
|
|
rtx insn;
|
|
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
rtx x;
|
|
|
|
|
|
2003-01-07 23:14:43 +01:00
|
|
|
|
if (find_reg_note (insn, REG_LIBCALL, NULL))
|
|
|
|
|
cselib_current_insn_in_libcall = true;
|
|
|
|
|
if (find_reg_note (insn, REG_RETVAL, NULL))
|
|
|
|
|
cselib_current_insn_in_libcall = false;
|
2001-02-13 00:15:38 +01:00
|
|
|
|
cselib_current_insn = insn;
|
|
|
|
|
|
|
|
|
|
/* Forget everything at a CODE_LABEL, a volatile asm, or a setjmp. */
|
|
|
|
|
if (GET_CODE (insn) == CODE_LABEL
|
calls.c, function.c: Always define PREFERRED_STACK_BOUNDARY if not already defined.
* calls.c, function.c: Always define PREFERRED_STACK_BOUNDARY
if not already defined. Remove all #ifdefs on STACK_BOUNDARY;
this macro is now required.
* cselib.c (cselib_process_insn), flow.c (propagate_block),
loop.c (find_and_verify_loops), reload.c (reload): Check
for rtx code of CALL_INSN, not CALL, when deciding if we
need to check for REG_SETJMP note.
* gcse.c (compute_hash_table, compute_store_table): Update
the #ifdef NON_SAVING_SETJMP code to the new REG_SETJMP
logic.
* config/avr/avr.c: Fix typo.
* config/convex/convex.c (expand_movstr): Use adjust_address.
* config/dsp16xx/dsp16xx.c: Define dsp16xx_compare_gen
variable.
* config/dsp16xx/dsp16xx.md: Correct calls to replace_equiv_address.
* config/elxsi/elxsi.c: Include tree.h, expr.h, regs.h, and flags.h.
Fix typo.
* config/elxsi/elxsi.h: Don't define Rmode (typo for Pmode?)
Do define STACK_BOUNDARY.
* config/i370/i370.c: Include expr.h.
* config/i860/sysv3.h, config/i860/sysv4.h, config/m32r/m32r.h,
config/pa/som.h, config/v850/v850.h: Take in_ctors and
in_dtors out of EXTRA_SECTIONS; take CTORS_SECTION_FUNCTION
and DTORS_SECTION_FUNCTION out of EXTRA_SECTION_FUNCTIONS.
* config/m88k/m88k.c: Include c-tree.h after expr.h.
* config/pdp11/pdp11.c: Include expr.h and toplev.h.
* config/romp/romp.c: Include expr.h after tree.h.
Include toplev.h.
(output_fpop): Use xmalloc, not oballoc.
* config/we32k/we32k.c: Include expr.h.
From-SVN: r44768
2001-08-10 18:19:22 +02:00
|
|
|
|
|| (GET_CODE (insn) == CALL_INSN
|
2001-08-07 22:24:08 +02:00
|
|
|
|
&& find_reg_note (insn, REG_SETJMP, NULL))
|
2001-02-13 00:15:38 +01:00
|
|
|
|
|| (GET_CODE (insn) == INSN
|
|
|
|
|
&& GET_CODE (PATTERN (insn)) == ASM_OPERANDS
|
|
|
|
|
&& MEM_VOLATILE_P (PATTERN (insn))))
|
|
|
|
|
{
|
|
|
|
|
clear_table (0);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (! INSN_P (insn))
|
|
|
|
|
{
|
|
|
|
|
cselib_current_insn = 0;
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* If this is a call instruction, forget anything stored in a
|
|
|
|
|
call clobbered register, or, if this is not a const call, in
|
|
|
|
|
memory. */
|
|
|
|
|
if (GET_CODE (insn) == CALL_INSN)
|
|
|
|
|
{
|
|
|
|
|
for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
|
|
|
|
|
if (call_used_regs[i])
|
|
|
|
|
cselib_invalidate_regno (i, VOIDmode);
|
|
|
|
|
|
2001-08-07 14:59:58 +02:00
|
|
|
|
if (! CONST_OR_PURE_CALL_P (insn))
|
2001-02-13 00:15:38 +01:00
|
|
|
|
cselib_invalidate_mem (callmem);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
cselib_record_sets (insn);
|
|
|
|
|
|
|
|
|
|
#ifdef AUTO_INC_DEC
|
|
|
|
|
/* Clobber any registers which appear in REG_INC notes. We
|
|
|
|
|
could keep track of the changes to their values, but it is
|
|
|
|
|
unlikely to help. */
|
|
|
|
|
for (x = REG_NOTES (insn); x; x = XEXP (x, 1))
|
|
|
|
|
if (REG_NOTE_KIND (x) == REG_INC)
|
|
|
|
|
cselib_invalidate_rtx (XEXP (x, 0), NULL_RTX, NULL);
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* Look for any CLOBBERs in CALL_INSN_FUNCTION_USAGE, but only
|
|
|
|
|
after we have processed the insn. */
|
|
|
|
|
if (GET_CODE (insn) == CALL_INSN)
|
|
|
|
|
for (x = CALL_INSN_FUNCTION_USAGE (insn); x; x = XEXP (x, 1))
|
|
|
|
|
if (GET_CODE (XEXP (x, 0)) == CLOBBER)
|
|
|
|
|
cselib_invalidate_rtx (XEXP (XEXP (x, 0), 0), NULL_RTX, NULL);
|
|
|
|
|
|
|
|
|
|
cselib_current_insn = 0;
|
|
|
|
|
|
|
|
|
|
if (n_useless_values > MAX_USELESS_VALUES)
|
|
|
|
|
remove_useless_values ();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Make sure our varrays are big enough. Not called from any cselib routines;
|
|
|
|
|
it must be called by the user if it allocated new registers. */
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
cselib_update_varray_sizes ()
|
|
|
|
|
{
|
|
|
|
|
unsigned int nregs = max_reg_num ();
|
|
|
|
|
|
|
|
|
|
if (nregs == cselib_nregs)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
cselib_nregs = nregs;
|
|
|
|
|
VARRAY_GROW (reg_values, nregs);
|
|
|
|
|
VARRAY_GROW (used_regs, nregs);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Initialize cselib for one pass. The caller must also call
|
|
|
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init_alias_analysis. */
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void
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cselib_init ()
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{
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2002-06-04 09:11:05 +02:00
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/* This is only created once. */
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2001-02-13 00:15:38 +01:00
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if (! callmem)
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2002-06-04 09:11:05 +02:00
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callmem = gen_rtx_MEM (BLKmode, const0_rtx);
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2001-02-13 00:15:38 +01:00
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cselib_nregs = max_reg_num ();
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2002-06-04 09:11:05 +02:00
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if (reg_values_old != NULL && VARRAY_SIZE (reg_values_old) >= cselib_nregs)
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{
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reg_values = reg_values_old;
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used_regs = used_regs_old;
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VARRAY_CLEAR (reg_values);
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VARRAY_CLEAR (used_regs);
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}
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else
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{
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VARRAY_ELT_LIST_INIT (reg_values, cselib_nregs, "reg_values");
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VARRAY_UINT_INIT (used_regs, cselib_nregs, "used_regs");
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}
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hash_table = htab_create_ggc (31, get_value_hash, entry_and_rtx_equal_p,
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NULL);
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2001-02-13 00:15:38 +01:00
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clear_table (1);
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2003-01-07 23:14:43 +01:00
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cselib_current_insn_in_libcall = false;
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2001-02-13 00:15:38 +01:00
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}
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/* Called when the current user is done with cselib. */
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void
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cselib_finish ()
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{
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2002-06-04 09:11:05 +02:00
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reg_values_old = reg_values;
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reg_values = 0;
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used_regs_old = used_regs;
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used_regs = 0;
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hash_table = 0;
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n_useless_values = 0;
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next_unknown_value = 0;
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2001-02-13 00:15:38 +01:00
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}
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2002-06-04 09:11:05 +02:00
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#include "gt-cselib.h"
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