varasm.c (output_constant_def): Split out two new static functions...
* varasm.c (output_constant_def): Split out two new static functions, build_constant_desc and maybe_output_constant_def_contents. Restructure for comprehensibility. Don't call output_addressed_constants. Treat defstr being non-NULL for STRING_POOL_ADDRESS_P constants as an invariant. (struct deferred_string): Remove labelno field. (output_constant_def_contents): Kill labelno argument. Call output_addressed_constants here. Use ASM_OUTPUT_LABEL, not asm_out.internal_label. (mark_constant): Update call to output_constant_def_contents. Treat defstr being non-NULL for STRING_POOL_ADDRESS_P constants as an invariant. From-SVN: r66129
This commit is contained in:
Zack Weinberg
parent
12969f45d3
commit
293107d161
127
gcc/ChangeLog
127
gcc/ChangeLog
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@ -1,3 +1,18 @@
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2003-04-26 Zack Weinberg <zack@codesourcery.com>
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* varasm.c (output_constant_def): Split out two new static
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functions, build_constant_desc and maybe_output_constant_def_contents.
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Restructure for comprehensibility. Don't call
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output_addressed_constants. Treat defstr being non-NULL for
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STRING_POOL_ADDRESS_P constants as an invariant.
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(struct deferred_string): Remove labelno field.
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(output_constant_def_contents): Kill labelno argument. Call
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output_addressed_constants here. Use ASM_OUTPUT_LABEL, not
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asm_out.internal_label.
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(mark_constant): Update call to output_constant_def_contents.
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Treat defstr being non-NULL for STRING_POOL_ADDRESS_P
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constants as an invariant.
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2003-04-26 Richard Henderson <rth@redhat.com>
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* config/i386/i386.c (output_pic_addr_const): Use SYMBOL_REF_LOCAL_P.
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@ -88,9 +103,9 @@
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2003-04-25 Richard Henderson <rth@redhat.com>
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PR opt/10315
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* config/rs6000/rs6000.c (rs6000_emit_move): Only elide proper
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checks during reload; use validize_mem instead of adjust_address.
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PR opt/10315
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* config/rs6000/rs6000.c (rs6000_emit_move): Only elide proper
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checks during reload; use validize_mem instead of adjust_address.
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2003-04-26 Ben Elliston <bje@wasabisystems.com>
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@ -115,14 +130,14 @@
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2003-04-24 Alexander Kabaev <kan@FreeBSD.ORG>
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* config/sparc/sparc.md (umulsidi3, mulsidi3): Avoid using
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const_umulsidi3_sp32 and const_mulsidi3_sp32 on 64bit targets
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const_umulsidi3_sp32 and const_mulsidi3_sp32 on 64bit targets
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where they might be not present. Use their _sp64 equivalent
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instead.
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Thu Apr 24 20:42:12 CEST 2003 Jan Hubicka <jh@suse.cz>
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* i386.md (cvtsi2sdq): Fix typo in previous patch.
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2003-04-24 Krister Walfridsson <cato@df.lth.se>
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* configure.in: Check whether mbstowcs works.
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@ -156,7 +171,7 @@ Thu Apr 24 16:55:26 CEST 2003 Jan Hubicka <jh@suse.cz>
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PR c/10308
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* reload.c (find_reloads_address_1): Reload plus at the place of
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index register.
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2003-04-24 Nathan Sidwell <nathan@codesourcery.com>
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New GCOV_TAG_FUNCTION layout
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@ -334,14 +349,14 @@ Thu Apr 24 16:55:26 CEST 2003 Jan Hubicka <jh@suse.cz>
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2003-04-22 Richard Henderson <rth@redhat.com>
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PR 8866
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* rtl.h (MEM_NOTRAP_P): New.
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(MEM_COPY_ATTRIBUTES): Copy it.
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* rtlanal.c (may_trap_p): Check it.
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* expr.c (do_tablejump): Set it.
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PR 8866
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* rtl.h (MEM_NOTRAP_P): New.
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(MEM_COPY_ATTRIBUTES): Copy it.
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* rtlanal.c (may_trap_p): Check it.
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* expr.c (do_tablejump): Set it.
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* doc/rtl.texi (Flags): Document it.
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* cfgrtl.c (try_redirect_by_replacing_jump): Revert last three changes.
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* cfgrtl.c (try_redirect_by_replacing_jump): Revert last three changes.
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2003-04-22 Olivier Hainque <hainque@act-europe.fr>
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@ -350,12 +365,12 @@ Thu Apr 24 16:55:26 CEST 2003 Jan Hubicka <jh@suse.cz>
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2003-04-22 Vincent Celier <celier@gnat.com>
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* gthr-gnat.h, gthr-gnat.c: new sources for implementation of
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--enable-threads=gnat.
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* Makefile.in: Add gthr-gnat.c to LIB2ADDEH.
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* configure.in: Add gnat to the list of thread packages
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* configure: Rebuild.
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* config/t-linux: Add gthr-gnat.c to LIB2ADDEH and LIB2ADDEHDEP
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* gthr-gnat.h, gthr-gnat.c: new sources for implementation of
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--enable-threads=gnat.
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* Makefile.in: Add gthr-gnat.c to LIB2ADDEH.
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* configure.in: Add gnat to the list of thread packages
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* configure: Rebuild.
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* config/t-linux: Add gthr-gnat.c to LIB2ADDEH and LIB2ADDEHDEP
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2003-04-22 Neil Booth <neil@daikokuya.co.uk>
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@ -366,7 +381,7 @@ Thu Apr 24 16:55:26 CEST 2003 Jan Hubicka <jh@suse.cz>
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* cpptrad.c (_cpp_replacement_text_len): Add check for macro
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parameter count.
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(_cpp_copy_replacement_text): Same.
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2003-04-22 Neil Booth <neil@daikokuya.co.uk>
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* c-lex.c (c_lex): Handle CPP_OTHER differently.
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@ -397,9 +412,9 @@ Thu Apr 24 16:55:26 CEST 2003 Jan Hubicka <jh@suse.cz>
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2003-04-22 Aldy Hernandez <aldyh@redhat.com>
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* config/rs6000/t-spe: Merge in t-fprules into file.
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* config/rs6000/t-spe: Merge in t-fprules into file.
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* config.gcc: Add t-spe to powerpc-eabispe.
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* config.gcc: Add t-spe to powerpc-eabispe.
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2003-04-22 Kean Johnston <jkj@sco.com>
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@ -433,8 +448,8 @@ Thu Apr 24 16:55:26 CEST 2003 Jan Hubicka <jh@suse.cz>
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2003-04-21 Aldy Hernandez <aldyh@redhat.com>
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* config/rs6000/rs6000.c (rs6000_override_options): No SPE means
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64-bit long doubles.
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* config/rs6000/rs6000.c (rs6000_override_options): No SPE means
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64-bit long doubles.
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2003-04-21 Olivier Hainque <hainque@act-europe.fr>
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@ -446,7 +461,7 @@ Thu Apr 24 16:55:26 CEST 2003 Jan Hubicka <jh@suse.cz>
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nested subprograms.
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* expmed.c (extract_bit_field): Reverse operands of && condition to
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prevent a potential division by zero in the previously first branch.
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prevent a potential division by zero in the previously first branch.
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* config/pa/pa.md (extv, extzv): FAIL if the bitfield length is zero.
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2003-04-21 Joel Brobecker <brobecker@gnat.com>
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@ -458,34 +473,34 @@ Thu Apr 24 16:55:26 CEST 2003 Jan Hubicka <jh@suse.cz>
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2003-04-21 Nathan Sidwell <nathan@codesourcery.com>
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Break out coverage routines to new file.
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* Makefile.in (COVERAGE_H): New variable
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(C_OBJS): Add coverage.o
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(coverage.o): New target.
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(profile.o, loop-init.o, sched-ebb.o, predict.o, tracer.o): Adjust
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dependencies.
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(GTFILES): Adjust.
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(gt-coverage.h): New target.
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(gt-profile.h): Remove.
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* profile.h: Remove. Move to ...
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* coverage.h: ... here. New. #include gcov-io.h.
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* gcov-io.h: Move function definitions to ...
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* gcov-io.c: ... here. New.
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* profile.c: Move coverage routines to coverage.c.
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(instrument_edges, get_exec_counts, branch_prob, init_branch_prob,
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end_branch_prob): Adjust.
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* coverage.c: New. Coverage routines from profile.c
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(coverage_counter_ref, coverage_init, coverage_finish,
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coverage_end_function, coverage_begin_output,
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coverage_counter_ref, get_coverage_counts): Define.
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* gcov-dump.c, gcov.c: #include gcov-io.c.
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* libgcov.c: Likewise. Adjust.
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* loop-init.c: Don't #include profile.h
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* tracer.c, predict.c, sched-ebb.c: Adjust #includes.
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* rtl.h: Add coverage prototypes.
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* toplev.c (compile_file): Init coverage, not branch_prob.
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Always call coverage_finish.
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(rest_of_compilation): Call coverage_end_function.
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Break out coverage routines to new file.
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* Makefile.in (COVERAGE_H): New variable
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(C_OBJS): Add coverage.o
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(coverage.o): New target.
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(profile.o, loop-init.o, sched-ebb.o, predict.o, tracer.o): Adjust
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dependencies.
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(GTFILES): Adjust.
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(gt-coverage.h): New target.
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(gt-profile.h): Remove.
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* profile.h: Remove. Move to ...
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* coverage.h: ... here. New. #include gcov-io.h.
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* gcov-io.h: Move function definitions to ...
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* gcov-io.c: ... here. New.
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* profile.c: Move coverage routines to coverage.c.
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(instrument_edges, get_exec_counts, branch_prob, init_branch_prob,
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end_branch_prob): Adjust.
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* coverage.c: New. Coverage routines from profile.c
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(coverage_counter_ref, coverage_init, coverage_finish,
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coverage_end_function, coverage_begin_output,
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coverage_counter_ref, get_coverage_counts): Define.
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* gcov-dump.c, gcov.c: #include gcov-io.c.
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* libgcov.c: Likewise. Adjust.
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* loop-init.c: Don't #include profile.h
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* tracer.c, predict.c, sched-ebb.c: Adjust #includes.
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* rtl.h: Add coverage prototypes.
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* toplev.c (compile_file): Init coverage, not branch_prob.
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Always call coverage_finish.
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(rest_of_compilation): Call coverage_end_function.
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2003-04-21 Matt Kraai <kraai@alumni.cmu.edu>
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@ -506,10 +521,10 @@ Thu Apr 24 16:55:26 CEST 2003 Jan Hubicka <jh@suse.cz>
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* cpplib.h (struct cpp_callbacks): Change prototype of include.
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2003-04-21 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
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* doc/rtl.texi (RTX_UNCHANGING_P): Point to true_dependence for
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details of conflict handling.
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* fold-const.c (extract_muldiv, case CONVERT_EXPR): Detect case
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when conversion overflows.
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@ -525,7 +540,7 @@ Thu Apr 24 16:55:26 CEST 2003 Jan Hubicka <jh@suse.cz>
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2003-04-21 Andreas Jaeger <aj@suse.de>
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* cppcharset.c (_cpp_valid_ucn): Cast field precision to int.
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* cppcharset.c (_cpp_valid_ucn): Cast field precision to int.
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2003-04-20 Chris Lattner <sabre@nondot.org>
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Zack Weinberg <zack@codesourcery.com>
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@ -921,7 +936,7 @@ Fri Apr 18 01:28:51 CEST 2003 Jan Hubicka <jh@suse.cz>
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* emit-rtl.c (subreg_hard_regno): Check that register is
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representable.
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* reload.c (reload_inner_reg_of_subreg): When register is not
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representable, reload the whole thing.
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(find_reloads): Likewsie.
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229
gcc/varasm.c
229
gcc/varasm.c
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@ -142,7 +142,8 @@ static unsigned int const_hash PARAMS ((tree));
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static unsigned int const_hash_1 PARAMS ((tree));
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static int compare_constant PARAMS ((tree, tree));
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static tree copy_constant PARAMS ((tree));
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static void output_constant_def_contents PARAMS ((tree, int, int));
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static void maybe_output_constant_def_contents PARAMS ((tree, rtx, int));
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static void output_constant_def_contents PARAMS ((tree, const char *));
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static void decode_rtx_const PARAMS ((enum machine_mode, rtx,
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struct rtx_const *));
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static unsigned int const_hash_rtx PARAMS ((enum machine_mode, rtx));
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@ -2164,6 +2165,8 @@ struct constant_descriptor_tree GTY(())
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static GTY(()) struct constant_descriptor_tree *
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const_hash_table[MAX_HASH_TABLE];
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static struct constant_descriptor_tree * build_constant_desc PARAMS ((tree));
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/* We maintain a hash table of STRING_CST values. Unless we are asked to force
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out a string constant, we defer output of the constants until we know
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they are actually used. This will be if something takes its address or if
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@ -2175,7 +2178,6 @@ struct deferred_string GTY(())
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{
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const char *label;
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tree exp;
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int labelno;
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};
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static GTY ((param_is (struct deferred_string))) htab_t const_str_htab;
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@ -2533,6 +2535,51 @@ copy_constant (exp)
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}
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}
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/* Subroutine of output_constant_def:
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No constant equal to EXP is known to have been output.
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Make a constant descriptor to enter EXP in the hash table.
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Assign the label number and construct RTL to refer to the
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constant's location in memory.
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Caller is responsible for updating the hash table. */
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static struct constant_descriptor_tree *
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build_constant_desc (exp)
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tree exp;
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{
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rtx symbol;
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rtx rtl;
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char label[256];
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int labelno;
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struct constant_descriptor_tree *desc;
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desc = ggc_alloc (sizeof (*desc));
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desc->value = copy_constant (exp);
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/* Create a string containing the label name, in LABEL. */
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labelno = const_labelno++;
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ASM_GENERATE_INTERNAL_LABEL (label, "LC", labelno);
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/* We have a symbol name; construct the SYMBOL_REF and the MEM. */
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symbol = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (label));
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SYMBOL_REF_FLAGS (symbol) = SYMBOL_FLAG_LOCAL;
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rtl = gen_rtx_MEM (TYPE_MODE (TREE_TYPE (exp)), symbol);
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set_mem_attributes (rtl, exp, 1);
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set_mem_alias_set (rtl, 0);
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set_mem_alias_set (rtl, const_alias_set);
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/* Set flags or add text to the name to record information, such as
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that it is a local symbol. If the name is changed, the macro
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ASM_OUTPUT_LABELREF will have to know how to strip this
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information. */
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(*targetm.encode_section_info) (exp, rtl, true);
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desc->rtl = rtl;
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desc->label = XSTR (XEXP (desc->rtl, 0), 0);
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return desc;
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}
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/* Return an rtx representing a reference to constant data in memory
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for the constant expression EXP.
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@ -2554,12 +2601,6 @@ output_constant_def (exp, defer)
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{
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int hash;
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struct constant_descriptor_tree *desc;
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struct deferred_string **defstr;
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char label[256];
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int reloc;
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int found = 1;
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int labelno = -1;
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rtx rtl;
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/* We can't just use the saved RTL if this is a deferred string constant
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and we are not to defer anymore. */
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@ -2567,133 +2608,102 @@ output_constant_def (exp, defer)
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&& (defer || !STRING_POOL_ADDRESS_P (XEXP (TREE_CST_RTL (exp), 0))))
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return TREE_CST_RTL (exp);
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/* Make sure any other constants whose addresses appear in EXP
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are assigned label numbers. */
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reloc = output_addressed_constants (exp);
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/* Compute hash code of EXP. Search the descriptors for that hash code
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to see if any of them describes EXP. If yes, the descriptor records
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the label number already assigned. */
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hash = const_hash (exp);
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for (desc = const_hash_table[hash]; desc; desc = desc->next)
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if (compare_constant (exp, desc->value))
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break;
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if (desc == 0)
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{
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rtx symbol;
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/* No constant equal to EXP is known to have been output.
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Make a constant descriptor to enter EXP in the hash table.
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Assign the label number and record it in the descriptor for
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future calls to this function to find. */
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/* Create a string containing the label name, in LABEL. */
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labelno = const_labelno++;
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ASM_GENERATE_INTERNAL_LABEL (label, "LC", labelno);
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desc = ggc_alloc (sizeof (*desc));
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desc = build_constant_desc (exp);
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desc->next = const_hash_table[hash];
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desc->label = ggc_strdup (label);
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desc->value = copy_constant (exp);
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const_hash_table[hash] = desc;
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/* We have a symbol name; construct the SYMBOL_REF and the MEM. */
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symbol = gen_rtx_SYMBOL_REF (Pmode, desc->label);
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SYMBOL_REF_FLAGS (symbol) = SYMBOL_FLAG_LOCAL;
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rtl = desc->rtl = gen_rtx_MEM (TYPE_MODE (TREE_TYPE (exp)), symbol);
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set_mem_attributes (rtl, exp, 1);
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set_mem_alias_set (rtl, 0);
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set_mem_alias_set (rtl, const_alias_set);
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found = 0;
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maybe_output_constant_def_contents (exp, desc->rtl, defer);
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}
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else
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rtl = desc->rtl;
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if (TREE_CODE (exp) != INTEGER_CST)
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TREE_CST_RTL (exp) = rtl;
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/* Optionally set flags or add text to the name to record information
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such as that it is a function name. If the name is changed, the macro
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ASM_OUTPUT_LABELREF will have to know how to strip this information. */
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/* A previously-processed constant would already have section info
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encoded in it. */
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if (! found)
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else if (!defer && STRING_POOL_ADDRESS_P (XEXP (desc->rtl, 0)))
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{
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(*targetm.encode_section_info) (exp, rtl, true);
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/* If the string is currently deferred but we need to output it
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now, remove it from the deferred string hash table. */
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struct deferred_string **defstr;
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desc->rtl = rtl;
|
||||
desc->label = XSTR (XEXP (desc->rtl, 0), 0);
|
||||
}
|
||||
|
||||
if (found && !defer && STRING_POOL_ADDRESS_P (XEXP (rtl, 0)))
|
||||
{
|
||||
defstr = (struct deferred_string **)
|
||||
htab_find_slot_with_hash (const_str_htab, desc->label,
|
||||
STRHASH (desc->label), NO_INSERT);
|
||||
#ifdef ENABLE_CHECKING
|
||||
if (!defstr)
|
||||
abort ();
|
||||
#endif
|
||||
|
||||
STRING_POOL_ADDRESS_P (XEXP (desc->rtl, 0)) = 0;
|
||||
htab_clear_slot (const_str_htab, (void **) defstr);
|
||||
maybe_output_constant_def_contents (exp, desc->rtl, 0);
|
||||
}
|
||||
|
||||
TREE_CST_RTL (exp) = desc->rtl;
|
||||
return desc->rtl;
|
||||
}
|
||||
|
||||
/* Subroutine of output_constant_def:
|
||||
Decide whether or not to defer the output of EXP, which can be
|
||||
accesed through rtl RTL, and either do the output or record EXP in
|
||||
the table of deferred strings. */
|
||||
static void
|
||||
maybe_output_constant_def_contents (exp, rtl, defer)
|
||||
tree exp;
|
||||
rtx rtl;
|
||||
int defer;
|
||||
{
|
||||
const char *label;
|
||||
|
||||
if (flag_syntax_only)
|
||||
return;
|
||||
|
||||
label = XSTR (XEXP (rtl, 0), 0);
|
||||
|
||||
if (defer && TREE_CODE (exp) == STRING_CST && !flag_writable_strings)
|
||||
{
|
||||
struct deferred_string **defstr;
|
||||
defstr = (struct deferred_string **)
|
||||
htab_find_slot_with_hash (const_str_htab, label,
|
||||
STRHASH (label), INSERT);
|
||||
if (defstr)
|
||||
{
|
||||
/* If the string is currently deferred but we need to output it now,
|
||||
remove it from deferred string hash table. */
|
||||
found = 0;
|
||||
labelno = (*defstr)->labelno;
|
||||
STRING_POOL_ADDRESS_P (XEXP (rtl, 0)) = 0;
|
||||
htab_clear_slot (const_str_htab, (void **) defstr);
|
||||
struct deferred_string *p;
|
||||
|
||||
p = (struct deferred_string *)
|
||||
ggc_alloc (sizeof (struct deferred_string));
|
||||
|
||||
p->exp = exp;
|
||||
p->label = label;
|
||||
|
||||
*defstr = p;
|
||||
STRING_POOL_ADDRESS_P (XEXP (rtl, 0)) = 1;
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
/* If this is the first time we've seen this particular constant,
|
||||
output it. Do no output if -fsyntax-only. */
|
||||
if (! found && ! flag_syntax_only)
|
||||
{
|
||||
if (!defer || TREE_CODE (exp) != STRING_CST
|
||||
|| flag_writable_strings)
|
||||
output_constant_def_contents (exp, reloc, labelno);
|
||||
else
|
||||
{
|
||||
defstr = (struct deferred_string **)
|
||||
htab_find_slot_with_hash (const_str_htab, desc->label,
|
||||
STRHASH (desc->label), INSERT);
|
||||
if (!defstr)
|
||||
output_constant_def_contents (exp, reloc, labelno);
|
||||
else
|
||||
{
|
||||
struct deferred_string *p;
|
||||
|
||||
p = (struct deferred_string *)
|
||||
ggc_alloc (sizeof (struct deferred_string));
|
||||
|
||||
p->exp = desc->value;
|
||||
p->label = desc->label;
|
||||
p->labelno = labelno;
|
||||
*defstr = p;
|
||||
STRING_POOL_ADDRESS_P (XEXP (rtl, 0)) = 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return rtl;
|
||||
output_constant_def_contents (exp, label);
|
||||
}
|
||||
|
||||
/* Now output assembler code to define the label for EXP,
|
||||
and follow it with the data of EXP. */
|
||||
|
||||
static void
|
||||
output_constant_def_contents (exp, reloc, labelno)
|
||||
output_constant_def_contents (exp, label)
|
||||
tree exp;
|
||||
int reloc;
|
||||
int labelno;
|
||||
const char *label;
|
||||
{
|
||||
int align;
|
||||
/* Make sure any other constants whose addresses appear in EXP
|
||||
are assigned label numbers. */
|
||||
int reloc = output_addressed_constants (exp);
|
||||
|
||||
/* Align the location counter as required by EXP's data type. */
|
||||
align = TYPE_ALIGN (TREE_TYPE (exp));
|
||||
int align = TYPE_ALIGN (TREE_TYPE (exp));
|
||||
#ifdef CONSTANT_ALIGNMENT
|
||||
align = CONSTANT_ALIGNMENT (exp, align);
|
||||
#endif
|
||||
|
|
@ -2709,7 +2719,7 @@ output_constant_def_contents (exp, reloc, labelno)
|
|||
}
|
||||
|
||||
/* Output the label itself. */
|
||||
(*targetm.asm_out.internal_label) (asm_out_file, "LC", labelno);
|
||||
ASM_OUTPUT_LABEL (asm_out_file, label);
|
||||
|
||||
/* Output the value of EXP. */
|
||||
output_constant (exp,
|
||||
|
|
@ -3521,19 +3531,20 @@ mark_constant (current_rtx, data)
|
|||
}
|
||||
else if (STRING_POOL_ADDRESS_P (x))
|
||||
{
|
||||
struct deferred_string **defstr;
|
||||
struct deferred_string *p, **defstr;
|
||||
|
||||
defstr = (struct deferred_string **)
|
||||
htab_find_slot_with_hash (const_str_htab, XSTR (x, 0),
|
||||
STRHASH (XSTR (x, 0)), NO_INSERT);
|
||||
if (defstr)
|
||||
{
|
||||
struct deferred_string *p = *defstr;
|
||||
#ifdef ENABLE_CHECKING
|
||||
if (!defstr)
|
||||
abort ();
|
||||
#endif
|
||||
|
||||
STRING_POOL_ADDRESS_P (x) = 0;
|
||||
output_constant_def_contents (p->exp, 0, p->labelno);
|
||||
htab_clear_slot (const_str_htab, (void **) defstr);
|
||||
}
|
||||
p = *defstr;
|
||||
STRING_POOL_ADDRESS_P (x) = 0;
|
||||
output_constant_def_contents (p->exp, p->label);
|
||||
htab_clear_slot (const_str_htab, (void **) defstr);
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
|
|
|
|||
Loading…
Reference in New Issue