gcc/gcc
Andreas Krebbel 17f6dbbf4e tm.texi: Add brackets around the return type of TARGET_SECONDARY_RELOAD.
2007-03-19  Andreas Krebbel  <krebbel1@de.ibm.com>

	* doc/tm.texi: Add brackets around the return type of
	TARGET_SECONDARY_RELOAD.

From-SVN: r123062
2007-03-19 15:17:55 +00:00
..
ada cuintp.c (UI_To_gnu): Use fold_buildN calls instead of calling fold with the result of buildN. 2007-03-09 17:09:54 +00:00
config s390.md (op_type attribute): RRR instruction type added. 2007-03-19 08:51:20 +00:00
cp * cp-tree.def, parser.c, pt.c: Fix comment typos. 2007-03-17 17:29:11 +00:00
doc tm.texi: Add brackets around the return type of TARGET_SECONDARY_RELOAD. 2007-03-19 15:17:55 +00:00
fortran re PR fortran/31203 ([4.1/4.2 only] Character length should never be negative) 2007-03-19 08:13:30 +00:00
ginclude
java Make-lang.in: Add install-pdf target as copied from automake v1.10 rules. 2007-03-01 16:18:47 -08:00
objc * Make-lang.in: Add dummy lang.install-pdf target. 2007-03-01 16:15:32 -08:00
objcp * Make-lang.in: Add dummy lang.install-pdf target. 2007-03-01 16:16:06 -08:00
po * sr.po: New. 2007-03-08 11:48:03 +00:00
testsuite re PR tree-optimization/31254 (verify_ssa failed: type mismatch between an SSA_NAME and its symbol) 2007-03-19 13:36:29 +00:00
treelang Make-lang.in: Add install-pdf target as copied from automake v1.10 rules. 2007-03-01 16:17:38 -08:00
ABOUT-GCC-NLS
acinclude.m4
aclocal.m4
addresses.h
alias.c
alias.h
alloc-pool.c
alloc-pool.h
attribs.c
BASE-VER
basic-block.h
bb-reorder.c
bitmap.c
bitmap.h
bt-load.c
builtin-attrs.def
builtin-types.def
builtins.c builtins.c (expand_builtin_cexpi): Use the right argument for the expansion via cexp. 2007-03-16 09:54:39 +00:00
builtins.def builtins.def (lceil, [...]): Mark with ATTR_CONST_NOTHROW_LIST. 2007-03-08 21:37:28 +00:00
c-aux-info.c
c-common.c invoke.texi (-Wconversion): Document warnings specific to C++. 2007-03-16 23:32:12 +00:00
c-common.def
c-common.h invoke.texi (-Wconversion): Document warnings specific to C++. 2007-03-16 23:32:12 +00:00
c-config-lang.in
c-convert.c
c-cppbuiltin.c c.opt (fgnu89-inline): New option. 2007-03-05 19:45:20 +00:00
c-decl.c invoke.texi (Wvla): New warning. 2007-03-12 18:31:39 +00:00
c-dump.c
c-errors.c
c-format.c builtins.c (fold_builtin_call_list, [...]): Delete, and replace with... 2007-02-28 14:21:20 -05:00
c-format.h
c-gimplify.c
c-incpath.c cppdefault.c (cpp_EXEC_PREFIX): New variable. 2007-03-12 15:59:06 +00:00
c-incpath.h
c-lang.c
c-lex.c
c-objc-common.c
c-objc-common.h
c-omp.c
c-opts.c re PR c++/24924 (front end and preprocessor pedantic_errors settings should agree) 2007-03-15 22:24:42 +00:00
c-parser.c c-common.h (empty_body_warning): Rename to empty_if_body_warning. 2007-03-14 19:33:17 +00:00
c-pch.c
c-ppoutput.c
c-pragma.c
c-pragma.h
c-pretty-print.c c-pretty-print.c (pp_c_direct_abstract_declarator): Use fold_build2. 2007-03-03 17:12:28 +00:00
c-pretty-print.h
c-semantics.c
c-tree.h extend.texi: Document optional priority argument to constructors and destructors. 2007-02-25 18:47:05 +00:00
c-typeck.c c-common.h (empty_body_warning): Rename to empty_if_body_warning. 2007-03-14 19:33:17 +00:00
c.opt invoke.texi (Wvla): New warning. 2007-03-12 18:31:39 +00:00
caller-save.c
calls.c calls.c (emit_library_call_value_1): Handle partial registers correctly when building up CALL_INSN_FUNCTION_USAGE. 2007-02-28 00:37:09 +00:00
cfg.c
cfganal.c
cfgbuild.c
cfgcleanup.c
cfgexpand.c
cfghooks.c
cfghooks.h
cfglayout.c cfglayout.c (fixup_reorder_chain): Postpone deleting dead jump tables... 2007-03-15 20:08:29 +00:00
cfglayout.h
cfgloop.c tree-ssa-loop-niter.c (compute_estimated_nb_iterations): Fix off-by-one error. 2007-02-25 19:49:22 +00:00
cfgloop.h tree-ssa-loop-niter.c (record_estimate): Add "upper" argument. 2007-03-16 00:25:30 +00:00
cfgloopanal.c
cfgloopmanip.c
cfgrtl.c cfglayout.c (fixup_reorder_chain): Postpone deleting dead jump tables... 2007-03-15 20:08:29 +00:00
cgraph.c
cgraph.h
cgraphbuild.c
cgraphunit.c cgraphunit.c (decide_is_function_needed): Honor -fkeep-inline-functions. 2007-02-24 19:02:40 +00:00
ChangeLog tm.texi: Add brackets around the return type of TARGET_SECONDARY_RELOAD. 2007-03-19 15:17:55 +00:00
ChangeLog-1997
ChangeLog-1998
ChangeLog-1999
ChangeLog-2000
ChangeLog-2001
ChangeLog-2002
ChangeLog-2003
ChangeLog-2004
ChangeLog-2005
ChangeLog-2006
ChangeLog.lib
ChangeLog.tree-ssa
collect2.c
collect2.h
combine.c expr.h (promoted_input_arg): Remove decl. 2007-03-02 09:49:58 -08:00
common.opt re PR c/17946 (wanted: warning for "a && MASK" when "a & MASK" was probably intended) 2007-03-09 16:16:35 +00:00
conditions.h
config.build
config.gcc s390.opt ("mhard-float", [...]): Bit value inverted and documentation adjusted. 2007-03-19 08:46:57 +00:00
config.host
config.in configure.ac (HAVE_AS_IX86_SAHF): On x86 targets check whether the configured assembler supports the sahf mnemonic. 2007-03-14 22:03:59 +01:00
configure configure.ac: Remove excess quoting from asm line 0 test. 2007-03-16 23:44:42 +00:00
configure.ac configure.ac: Remove excess quoting from asm line 0 test. 2007-03-16 23:44:42 +00:00
convert.c convert.c (convert_to_integer): Fix nearbyint/rint -> *lrint conversion. 2007-03-05 23:30:04 +00:00
convert.h
COPYING
COPYING.LIB
coretypes.h
coverage.c
coverage.h
cppdefault.c cppdefault.c (cpp_EXEC_PREFIX): New variable. 2007-03-12 15:59:06 +00:00
cppdefault.h cppdefault.c (cpp_EXEC_PREFIX): New variable. 2007-03-12 15:59:06 +00:00
cppspec.c
crtstuff.c
cse.c re PR middle-end/31127 (ICE in cse_find_path, at cse.c:5930) 2007-03-14 01:45:39 +00:00
cselib.c
cselib.h
cstamp-h.in
DATESTAMP Daily bump. 2007-03-19 00:17:19 +00:00
dbxout.c
dbxout.h
ddg.c
ddg.h
debug.c
debug.h
defaults.h
DEV-PHASE
df-core.c
df-problems.c
df-scan.c
df.h
dfp.c
dfp.h genemit.c (main): Print include statement for dfp.h. 2007-03-19 08:45:29 +00:00
diagnostic.c re PR other/30824 (-Werror -Wfatal-errors should stop after the first warning) 2007-02-20 10:18:58 +00:00
diagnostic.def
diagnostic.h
dojump.c
dominance.c
domwalk.c
domwalk.h
double-int.c re PR tree-optimization/30730 (-Wunsafe-loop-optimizations gives too many warnings) 2007-03-14 00:38:34 +00:00
double-int.h re PR tree-optimization/30730 (-Wunsafe-loop-optimizations gives too many warnings) 2007-03-14 00:38:34 +00:00
dummy-checksum.c
dwarf2.h
dwarf2asm.c
dwarf2asm.h
dwarf2out.c re PR debug/29906 (-g option creates internal compiler error) 2007-03-16 05:08:25 +00:00
dwarf2out.h
dwarf.h
emit-rtl.c emit-rtl.c (find_auto_inc): New. 2007-03-04 00:56:51 +00:00
emit-rtl.h
emutls.c
errors.c
errors.h errors.h (warning, [...]): Mark as cold. 2007-03-06 18:57:27 +00:00
et-forest.c
et-forest.h
except.c
except.h
explow.c
expmed.c
expr.c expr.c (emit_move_complex_push): Export. 2007-03-01 08:30:38 -08:00
expr.h expr.h (promoted_input_arg): Remove decl. 2007-03-02 09:49:58 -08:00
final.c final.c (final_scan_insn): Alter the condition of a conditional trap if we have nonstandard CC. 2007-03-17 11:43:07 +00:00
fix-header.c
fixproto
flags.h flags.h (flag_random_seed): Remove declaration, in favor of... 2007-03-14 01:47:33 +00:00
flow.c
fold-const.c ipa-type-escape improvements 2007-03-12 08:44:48 +00:00
fp-test.c
FSFChangeLog
FSFChangeLog.10
FSFChangeLog.11
function.c function.c (expand_function_end): Move blockage to just after we emit the label for the naked return from the... 2007-03-06 17:21:37 +00:00
function.h errors.h (warning, [...]): Mark as cold. 2007-03-06 18:57:27 +00:00
fwprop.c re PR rtl-optimization/30841 (Missed optimizations for sbi/cbi instructions) 2007-02-23 07:45:34 +00:00
gbl-ctors.h
gcc.c re PR driver/12448 (-MT / -MQ don't behave as documented.) 2007-03-13 23:50:42 +00:00
gcc.h
gccbug.in
gccspec.c re PR objc/31013 (objc PCH is broken on powerpc-darwin again) 2007-03-08 19:56:37 +00:00
gcov-dump.c
gcov-io.c
gcov-io.h
gcov-iov.c
gcov.c
gcse.c
gdbinit.in
gen-protos.c
genattr.c
genattrtab.c
genautomata.c
gencheck.c
genchecksum.c
gencodes.c
genconditions.c
genconfig.c
genconstants.c
genemit.c genemit.c (main): Print include statement for dfp.h. 2007-03-19 08:45:29 +00:00
genextract.c
genflags.c
gengenrtl.c
gengtype-lex.l
gengtype-yacc.y
gengtype.c
gengtype.h
genmddeps.c
genmodes.c
genmultilib
genopinit.c optabs.h (enum optab_index): Add new OTI_scalb. 2007-02-20 14:33:51 +01:00
genoutput.c
genpeep.c
genpreds.c
genrecog.c
gensupport.c
gensupport.h
ggc-common.c
ggc-none.c
ggc-page.c
ggc-zone.c
ggc.h
gimple-low.c
gimplify.c
glimits.h
global.c
graph.c
graph.h
gstab.h
gsyms.h
gsyslimits.h
gthr-aix.h
gthr-dce.h
gthr-gnat.c
gthr-gnat.h
gthr-lynx.h
gthr-nks.h
gthr-posix95.h
gthr-posix.c
gthr-posix.h
gthr-rtems.h
gthr-single.h
gthr-solaris.h
gthr-tpf.h
gthr-vxworks.h 200x-xx-xx Richard Sandiford <richard@codesourcery.com> Phil Edwards <phil@codesourcery.com> 2007-03-14 13:58:21 +00:00
gthr-win32.h
gthr.h
haifa-sched.c
hard-reg-set.h
hooks.c
hooks.h
host-default.c
hosthooks-def.h
hosthooks.h
hwint.h
ifcvt.c
input.h
insn-addr.h
insn-notes.def
integrate.c
integrate.h
intl.c
intl.h
ipa-cp.c
ipa-inline.c ipa-inline.c (cgraph_maybe_hot_edge_p): Look for hot/cold attributes... 2007-03-14 01:26:00 +00:00
ipa-prop.c
ipa-prop.h
ipa-pure-const.c
ipa-reference.c
ipa-reference.h
ipa-type-escape.c ipa-type-escape fix for ada 2007-03-17 12:47:53 +00:00
ipa-type-escape.h
ipa-utils.c
ipa-utils.h
ipa.c
jump.c
lambda-code.c re PR middle-end/30835 (ICE with -O2 -ftree-loop-linear) 2007-03-12 21:56:12 +00:00
lambda-mat.c
lambda-trans.c
lambda.h
langhooks-def.h
langhooks.c
langhooks.h
LANGUAGES
lcm.c
libada-mk.in
libfuncs.h
libgcc2.c
libgcc2.h
libgcc-std.ver
libgcov.c
limitx.h
limity.h
lists.c
local-alloc.c
longlong.h
loop-doloop.c
loop-init.c
loop-invariant.c
loop-iv.c loop-iv.c (simplify_using_initial_values): Fix oversight in previous change; avoid a memory leak when returning early. 2007-02-26 23:42:43 +00:00
loop-unroll.c lower-subreg.c: Include except.h. 2007-03-10 23:33:40 +00:00
loop-unswitch.c
lower-subreg.c lower-subreg.c: Include except.h. 2007-03-10 23:33:40 +00:00
machmode.def
machmode.h
main.c
Makefile.in Makefile.in (PREPROCESSOR_DEFINES): Add directory terminators to PREFIX and STANDARD_PREFIX. 2007-03-14 16:06:36 +00:00
mips-tdump.c
mips-tfile.c
mkconfig.sh
mkmap-flat.awk
mkmap-symver.awk
mode-classes.def
mode-switching.c mode-switching.c (create_pre_exit): Skip blockage insn. 2007-03-10 05:04:10 +00:00
modulo-sched.c
omega.c loop.texi: Document the Omega linear constraints solver. 2007-03-09 12:39:49 +00:00
omega.h arm.c, [...]: Fix comment typos. 2007-03-17 17:44:02 +00:00
omp-builtins.def
omp-low.c
ONEWS
opt-functions.awk
opt-gather.awk
optabs.c optabs.h (enum optab_index): Add new OTI_scalb. 2007-02-20 14:33:51 +01:00
optabs.h optabs.h (enum optab_index): Add new OTI_scalb. 2007-02-20 14:33:51 +01:00
optc-gen.awk
opth-gen.awk c-common.c (targetcm): Add. 2007-03-06 00:48:47 +00:00
opts-common.c
opts.c flags.h (flag_random_seed): Remove declaration, in favor of... 2007-03-14 01:47:33 +00:00
opts.h
output.h re PR target/26090 (IA-64 creates DT_TEXTREL binaries) 2007-03-09 16:53:09 -08:00
params.c
params.def loop.texi: Document the Omega linear constraints solver. 2007-03-09 12:39:49 +00:00
params.h
passes.c arm.c, [...]: Fix comment typos. 2007-03-17 17:44:02 +00:00
pointer-set.c
pointer-set.h
postreload-gcse.c
postreload.c rtl.h (remove_reg_equal_equiv_notes): New prototype. 2007-02-20 22:14:41 +00:00
predict.c arm.c, [...]: Fix comment typos. 2007-03-17 17:44:02 +00:00
predict.def errors.h (warning, [...]): Mark as cold. 2007-03-06 18:57:27 +00:00
predict.h
prefix.c
prefix.h
pretty-print.c
pretty-print.h
print-rtl.c
print-tree.c
profile.c
protoize.c
read-rtl.c
README.Portability
real.c
real.h
recog.c * recog.c (decode_asm_operands): No mixed declarations and code. 2007-03-09 10:39:05 +00:00
recog.h
reg-notes.def
reg-stack.c i386.md (UNSPEC_C2_FLAG): New constant. 2007-03-10 13:52:52 +01:00
regclass.c
regmove.c
regrename.c
regs.h
reload1.c rtl.def (ASM_INPUT): Add location. 2007-03-09 07:36:43 +00:00
reload.c reload.c (find_reloads_address_1): Handle PLUS expressions resulting from register elimination as PRE_MODIFY /... 2007-02-25 20:56:46 +00:00
reload.h
reorg.c
resource.c
resource.h
rtl-error.c
rtl-factoring.c
rtl.c
rtl.def rtl.def (ASM_INPUT): Add location. 2007-03-09 07:36:43 +00:00
rtl.h rtl.h (gen_rtx_ASM_INPUT): Use "" instead of NULL file name. 2007-03-09 15:10:33 +00:00
rtlanal.c Makefile.in (rtlanal.o): Depend on tree.h. 2007-03-01 09:58:12 +00:00
rtlhooks-def.h
rtlhooks.c
sbitmap.c
sbitmap.h
scan-decls.c
scan-types.sh
scan.c
scan.h
sched-deps.c
sched-ebb.c
sched-int.h
sched-rgn.c
sched-vis.c
sdbout.c
sdbout.h
see.c
SERVICE
simplify-rtx.c
sort-protos
sreal.c
sreal.h
stab.def
statistics.h
stmt.c rtl.def (ASM_INPUT): Add location. 2007-03-09 07:36:43 +00:00
stor-layout.c
stringpool.c
struct-equiv.c
stub-objc.c
sync-builtins.def
sys-protos.h
sys-types.h
system.h
target-def.h re PR target/26090 (IA-64 creates DT_TEXTREL binaries) 2007-03-09 16:53:09 -08:00
target.h re PR target/26090 (IA-64 creates DT_TEXTREL binaries) 2007-03-09 16:53:09 -08:00
targhooks.c re PR target/26090 (IA-64 creates DT_TEXTREL binaries) 2007-03-09 16:53:09 -08:00
targhooks.h re PR target/26090 (IA-64 creates DT_TEXTREL binaries) 2007-03-09 16:53:09 -08:00
timevar.c
timevar.def loop.texi: Document the Omega linear constraints solver. 2007-03-09 12:39:49 +00:00
timevar.h
tlink.c tlink.c (scan_linker_output): Parse linker messages from darwin9's linker better. 2007-02-24 06:22:12 +00:00
toplev.c flags.h (flag_random_seed): Remove declaration, in favor of... 2007-03-14 01:47:33 +00:00
toplev.h flags.h (flag_random_seed): Remove declaration, in favor of... 2007-03-14 01:47:33 +00:00
tracer.c
tree-affine.c
tree-affine.h
tree-browser.c
tree-browser.def
tree-cfg.c extend.texi: Document optional priority argument to constructors and destructors. 2007-02-25 18:47:05 +00:00
tree-cfgcleanup.c
tree-chrec.c
tree-chrec.h
tree-complex.c tree-pass.h (TODO_update_smt_usage): Remove. 2007-03-09 20:54:13 -05:00
tree-data-ref.c tree-ssa-loop-niter.c (record_estimate): Add "upper" argument. 2007-03-16 00:25:30 +00:00
tree-data-ref.h * tree-data-ref.h: Remove the prototype for analyze_array. 2007-03-17 17:51:39 +00:00
tree-dfa.c
tree-dump.c
tree-dump.h
tree-eh.c tree-eh.c (do_return_redirection): Call build_gimple_modify_stmt instead of calling build2 with a GIMPLE_MODIFY_STMT. 2007-03-08 19:02:51 +00:00
tree-flow-inline.h
tree-flow.h re PR tree-optimization/30730 (-Wunsafe-loop-optimizations gives too many warnings) 2007-03-14 00:38:34 +00:00
tree-gimple.c
tree-gimple.h
tree-if-conv.c tree-eh.c (do_return_redirection): Call build_gimple_modify_stmt instead of calling build2 with a GIMPLE_MODIFY_STMT. 2007-03-08 19:02:51 +00:00
tree-inline.c tree-eh.c (do_return_redirection): Call build_gimple_modify_stmt instead of calling build2 with a GIMPLE_MODIFY_STMT. 2007-03-08 19:02:51 +00:00
tree-inline.h
tree-into-ssa.c
tree-iterator.c
tree-iterator.h
tree-loop-linear.c re PR tree-optimization/31183 (ICE in int_cst_value, at tree.c:7684 with -O3 -ftree-loop-linear) 2007-03-16 11:30:48 +00:00
tree-mudflap.c tree-eh.c (do_return_redirection): Call build_gimple_modify_stmt instead of calling build2 with a GIMPLE_MODIFY_STMT. 2007-03-08 19:02:51 +00:00
tree-mudflap.h
tree-nested.c tree-eh.c (do_return_redirection): Call build_gimple_modify_stmt instead of calling build2 with a GIMPLE_MODIFY_STMT. 2007-03-08 19:02:51 +00:00
tree-nomudflap.c
tree-nrv.c re PR tree-optimization/30590 (tree-nrv optimization clobbers return variable) 2007-03-14 05:48:35 +00:00
tree-object-size.c
tree-optimize.c
tree-outof-ssa.c tree-eh.c (do_return_redirection): Call build_gimple_modify_stmt instead of calling build2 with a GIMPLE_MODIFY_STMT. 2007-03-08 19:02:51 +00:00
tree-pass.h tree-pass.h (pass_into_cfg_layout_mode, [...]): Declare. 2007-03-12 19:38:06 +00:00
tree-phinodes.c
tree-pretty-print.c
tree-profile.c tree-eh.c (do_return_redirection): Call build_gimple_modify_stmt instead of calling build2 with a GIMPLE_MODIFY_STMT. 2007-03-08 19:02:51 +00:00
tree-scalar-evolution.c re PR tree-optimization/30730 (-Wunsafe-loop-optimizations gives too many warnings) 2007-03-14 00:38:34 +00:00
tree-scalar-evolution.h
tree-sra.c tree-pass.h (TODO_update_smt_usage): Remove. 2007-03-09 20:54:13 -05:00
tree-ssa-address.c re PR tree-optimization/31085 (internal compiler error: in create_mem_ref, at tree-ssa-address.c:606) 2007-03-08 22:36:47 +00:00
tree-ssa-alias.c
tree-ssa-ccp.c tree-pass.h (TODO_update_smt_usage): Remove. 2007-03-09 20:54:13 -05:00
tree-ssa-coalesce.c tree-ssa-coalesce.c (fail_abnormal_edge_coalesce): Remove 2007-03-08 09:40:15 +00:00
tree-ssa-copy.c
tree-ssa-copyrename.c
tree-ssa-dce.c
tree-ssa-dom.c tree-pass.h (TODO_update_smt_usage): Remove. 2007-03-09 20:54:13 -05:00
tree-ssa-dse.c re PR tree-optimization/30375 (tree-ssa-dse incorrectly removes struct initialization) 2007-03-09 20:05:08 +00:00
tree-ssa-forwprop.c re PR tree-optimization/31254 (verify_ssa failed: type mismatch between an SSA_NAME and its symbol) 2007-03-19 13:36:29 +00:00
tree-ssa-live.c
tree-ssa-live.h
tree-ssa-loop-ch.c
tree-ssa-loop-im.c tree-eh.c (do_return_redirection): Call build_gimple_modify_stmt instead of calling build2 with a GIMPLE_MODIFY_STMT. 2007-03-08 19:02:51 +00:00
tree-ssa-loop-ivcanon.c
tree-ssa-loop-ivopts.c
tree-ssa-loop-manip.c
tree-ssa-loop-niter.c tree-ssa-loop-niter.c (record_estimate): Add "upper" argument. 2007-03-16 00:25:30 +00:00
tree-ssa-loop-prefetch.c tree-ssa-loop-niter.c (record_estimate): Add "upper" argument. 2007-03-16 00:25:30 +00:00
tree-ssa-loop-unswitch.c
tree-ssa-loop.c loop.texi: Document the Omega linear constraints solver. 2007-03-09 12:39:49 +00:00
tree-ssa-math-opts.c tree-eh.c (do_return_redirection): Call build_gimple_modify_stmt instead of calling build2 with a GIMPLE_MODIFY_STMT. 2007-03-08 19:02:51 +00:00
tree-ssa-operands.c tree-ssa-structalias.c (variable_info): Remove finished_solution. 2007-03-09 07:27:44 +00:00
tree-ssa-operands.h
tree-ssa-phiopt.c
tree-ssa-pre.c re PR tree-optimization/29922 ([Linux] ICE in insert_into_preds_of_block) 2007-03-17 23:07:34 +00:00
tree-ssa-propagate.c tree-vrp.c: Include "intl.h". 2007-03-08 17:36:05 +00:00
tree-ssa-propagate.h
tree-ssa-reassoc.c
tree-ssa-sink.c
tree-ssa-structalias.c tree-ssa-structalias.c (variable_info): Remove finished_solution. 2007-03-09 07:27:44 +00:00
tree-ssa-structalias.h
tree-ssa-ter.c
tree-ssa-threadedge.c tree-vrp.c: Include "intl.h". 2007-03-08 17:36:05 +00:00
tree-ssa-threadupdate.c
tree-ssa-uncprop.c
tree-ssa.c
tree-ssanames.c
tree-stdarg.c
tree-stdarg.h
tree-tailcall.c tree-eh.c (do_return_redirection): Call build_gimple_modify_stmt instead of calling build2 with a GIMPLE_MODIFY_STMT. 2007-03-08 19:02:51 +00:00
tree-vect-analyze.c
tree-vect-generic.c
tree-vect-patterns.c tree-eh.c (do_return_redirection): Call build_gimple_modify_stmt instead of calling build2 with a GIMPLE_MODIFY_STMT. 2007-03-08 19:02:51 +00:00
tree-vect-transform.c tree-vect-transform.c (get_initial_def_for_induction): Replace GET_MODE_NUNITS with TYPE_VECTOR_SUBPARTS. 2007-03-18 04:37:32 +00:00
tree-vectorizer.c re PR tree-optimization/26420 (-ftree-vectorizer-verbose=1 prints unvectorized loops information) 2007-03-05 10:57:09 +00:00
tree-vectorizer.h re PR tree-optimization/30858 (ice for legal code with -O2 -ftree-vectorize) 2007-02-22 08:16:18 +00:00
tree-vn.c
tree-vrp.c re PR middle-end/31115 (libstdc++ 22_locale/num_get/get/char/2.cc 27_io/basic_ostream/inserters_arithmetic/char/6.cc) 2007-03-11 16:08:35 +00:00
tree.c flags.h (flag_random_seed): Remove declaration, in favor of... 2007-03-14 01:47:33 +00:00
tree.def
tree.h re PR tree-optimization/30730 (-Wunsafe-loop-optimizations gives too many warnings) 2007-03-14 00:38:34 +00:00
treestruct.def
tsystem.h
typeclass.h
unwind-c.c
unwind-compat.c
unwind-compat.h
unwind-dw2-fde-compat.c
unwind-dw2-fde-darwin.c
unwind-dw2-fde-glibc.c
unwind-dw2-fde.c
unwind-dw2-fde.h
unwind-dw2.c
unwind-dw2.h
unwind-generic.h
unwind-pe.h
unwind-sjlj.c
unwind.inc
value-prof.c
value-prof.h
var-tracking.c
varasm.c re PR target/26090 (IA-64 creates DT_TEXTREL binaries) 2007-03-09 16:53:09 -08:00
varpool.c re PR debug/29614 (DWARF information for function static variable is missing after unrelated code addition) 2007-02-24 00:11:39 +00:00
varray.c
varray.h
vec.c
vec.h
vecprim.h
version.c
version.h
vmsdbg.h
vmsdbgout.c
web.c
xcoff.h
xcoffout.c
xcoffout.h

Copyright (C) 2000, 2003 Free Software Foundation, Inc.

This file is intended to contain a few notes about writing C code
within GCC so that it compiles without error on the full range of
compilers GCC needs to be able to compile on.

The problem is that many ISO-standard constructs are not accepted by
either old or buggy compilers, and we keep getting bitten by them.
This knowledge until know has been sparsely spread around, so I
thought I'd collect it in one useful place.  Please add and correct
any problems as you come across them.

I'm going to start from a base of the ISO C90 standard, since that is
probably what most people code to naturally.  Obviously using
constructs introduced after that is not a good idea.

For the complete coding style conventions used in GCC, please read
http://gcc.gnu.org/codingconventions.html


String literals
---------------

Irix6 "cc -n32" and OSF4 "cc" have problems with constant string
initializers with parens around it, e.g.

const char string[] = ("A string");

This is unfortunate since this is what the GNU gettext macro N_
produces.  You need to find a different way to code it.

Some compilers like MSVC++ have fairly low limits on the maximum
length of a string literal; 509 is the lowest we've come across.  You
may need to break up a long printf statement into many smaller ones.


Empty macro arguments
---------------------

ISO C (6.8.3 in the 1990 standard) specifies the following:

If (before argument substitution) any argument consists of no
preprocessing tokens, the behavior is undefined.

This was relaxed by ISO C99, but some older compilers emit an error,
so code like

#define foo(x, y) x y
foo (bar, )

needs to be coded in some other way.


free and realloc
----------------

Some implementations crash upon attempts to free or realloc the null
pointer.  Thus if mem might be null, you need to write

  if (mem)
    free (mem);


Trigraphs
---------

You weren't going to use them anyway, but some otherwise ISO C
compliant compilers do not accept trigraphs.


Suffixes on Integer Constants
-----------------------------

You should never use a 'l' suffix on integer constants ('L' is fine),
since it can easily be confused with the number '1'.


			Common Coding Pitfalls
			======================

errno
-----

errno might be declared as a macro.


Implicit int
------------

In C, the 'int' keyword can often be omitted from type declarations.
For instance, you can write

  unsigned variable;

as shorthand for

  unsigned int variable;

There are several places where this can cause trouble.  First, suppose
'variable' is a long; then you might think

  (unsigned) variable

would convert it to unsigned long.  It does not.  It converts to
unsigned int.  This mostly causes problems on 64-bit platforms, where
long and int are not the same size.

Second, if you write a function definition with no return type at
all:

  operate (int a, int b)
  {
    ...
  }

that function is expected to return int, *not* void.  GCC will warn
about this.

Implicit function declarations always have return type int.  So if you
correct the above definition to

  void
  operate (int a, int b)
  ...

but operate() is called above its definition, you will get an error
about a "type mismatch with previous implicit declaration".  The cure
is to prototype all functions at the top of the file, or in an
appropriate header.

Char vs unsigned char vs int
----------------------------

In C, unqualified 'char' may be either signed or unsigned; it is the
implementation's choice.  When you are processing 7-bit ASCII, it does
not matter.  But when your program must handle arbitrary binary data,
or fully 8-bit character sets, you have a problem.  The most obvious
issue is if you have a look-up table indexed by characters.

For instance, the character '\341' in ISO Latin 1 is SMALL LETTER A
WITH ACUTE ACCENT.  In the proper locale, isalpha('\341') will be
true.  But if you read '\341' from a file and store it in a plain
char, isalpha(c) may look up character 225, or it may look up
character -31.  And the ctype table has no entry at offset -31, so
your program will crash.  (If you're lucky.)

It is wise to use unsigned char everywhere you possibly can.  This
avoids all these problems.  Unfortunately, the routines in <string.h>
take plain char arguments, so you have to remember to cast them back
and forth - or avoid the use of strxxx() functions, which is probably
a good idea anyway.

Another common mistake is to use either char or unsigned char to
receive the result of getc() or related stdio functions.  They may
return EOF, which is outside the range of values representable by
char.  If you use char, some legal character value may be confused
with EOF, such as '\377' (SMALL LETTER Y WITH UMLAUT, in Latin-1).
The correct choice is int.

A more subtle version of the same mistake might look like this:

  unsigned char pushback[NPUSHBACK];
  int pbidx;
  #define unget(c) (assert(pbidx < NPUSHBACK), pushback[pbidx++] = (c))
  #define get(c) (pbidx ? pushback[--pbidx] : getchar())
  ...
  unget(EOF);

which will mysteriously turn a pushed-back EOF into a SMALL LETTER Y
WITH UMLAUT.


Other common pitfalls
---------------------

o Expecting 'plain' char to be either sign or unsigned extending.

o Shifting an item by a negative amount or by greater than or equal to
  the number of bits in a type (expecting shifts by 32 to be sensible
  has caused quite a number of bugs at least in the early days).

o Expecting ints shifted right to be sign extended.

o Modifying the same value twice within one sequence point.

o Host vs. target floating point representation, including emitting NaNs
  and Infinities in a form that the assembler handles.

o qsort being an unstable sort function (unstable in the sense that
  multiple items that sort the same may be sorted in different orders
  by different qsort functions).

o Passing incorrect types to fprintf and friends.

o Adding a function declaration for a module declared in another file to
  a .c file instead of to a .h file.