8sa1-gcc/gcc
Dong JianQiang de8bfcc8e4
gcov-tool: Fix merging of different endian coverage data [PR96267]
2020-07-21  Dong JianQiang  <dongjianqiang2@huawei.com>

gcc/ChangeLog:

	PR gcov-profile/96267
	* gcov-io.c (gcov_open): enable if IN_GCOV_TOOL.
2020-07-23 15:04:17 +02:00
..
ada [Ada] Add push/pop capability in Output 2020-07-23 08:57:22 -04:00
analyzer
brig
c Daily bump. 2020-07-23 00:16:28 +00:00
c-family Daily bump. 2020-07-23 00:16:28 +00:00
common Initial Sapphire Rapids and Alder Lake support from ISA r40 2020-07-10 16:40:54 +08:00
config rs6000: Rename function adjust_vectorization_cost 2020-07-23 07:40:22 -05:00
cp Daily bump. 2020-07-23 00:16:28 +00:00
d Daily bump. 2020-06-29 00:16:29 +00:00
doc doc: fix a typo in languages.texi 2020-07-22 10:16:34 +01:00
fortran libomp: Add omp_depend_kind to omp_lib.{f90,h} 2020-07-23 15:02:15 +02:00
ginclude
go libgo: update to Go 1.14.6 release 2020-07-17 14:28:28 -07:00
jit Daily bump. 2020-06-16 00:16:28 +00:00
lto Daily bump. 2020-06-04 00:16:34 +00:00
objc
objcp
po Daily bump. 2020-07-21 00:16:28 +00:00
testsuite PR target/96260 - KASAN should work even back-end not porting anything. 2020-07-23 14:57:31 +08:00
ABOUT-GCC-NLS
acinclude.m4
aclocal.m4 bootstrap: Fix --disable-bootstrap with older g++. 2020-06-08 16:42:35 -04:00
addresses.h
adjust-alignment.c
alias.c
alias.h
align.h
alloc-pool.c
alloc-pool.h Add new/delete to struct occurence 2020-06-05 09:16:41 +02:00
array-traits.h
asan.c PR target/96260 - KASAN should work even back-end not porting anything. 2020-07-23 14:57:31 +08:00
asan.h PR target/96260 - KASAN should work even back-end not porting anything. 2020-07-23 14:57:31 +08:00
attribs.c Implement a solution for PR middle-end/10138 and PR middle-end/95136. 2020-06-04 16:08:32 -06:00
attribs.h Implement a solution for PR middle-end/10138 and PR middle-end/95136. 2020-06-04 16:08:32 -06:00
auto-inc-dec.c
auto-profile.c
auto-profile.h
backend.h
BASE-VER
basic-block.h
bb-reorder.c
bb-reorder.h
bitmap.c
bitmap.h
brig-builtins.def
builtin-attrs.def
builtin-types.def
builtins.c Correct handling of constant representations containing embedded nuls. 2020-07-20 12:08:58 -06:00
builtins.def
builtins.h PR middle-end/95353 - spurious -Wstringop-overflow writing to a trailing array plus offset 2020-06-10 12:02:12 -06:00
caller-save.c
calls.c Underline argument in -Wnonnull and in C++ extend warning to the this pointer [PR c++/86568]. 2020-06-28 14:24:52 -06:00
calls.h
ccmp.c
ccmp.h
cfg-flags.def
cfg.c
cfg.h
cfganal.c remove write-only array in rev_post_order_and_mark_dfs_back_seme 2020-07-20 16:00:48 +02:00
cfganal.h
cfgbuild.c
cfgbuild.h
cfgcleanup.c
cfgcleanup.h
cfgexpand.c middle-end/95493 - bogus MEM_ATTRS for variable array access 2020-06-05 08:35:44 +02:00
cfgexpand.h
cfghooks.c
cfghooks.h
cfgloop.c
cfgloop.h
cfgloopanal.c
cfgloopmanip.c
cfgloopmanip.h
cfgrtl.c
cfgrtl.h
cgraph.c
cgraph.h
cgraphbuild.c
cgraphclones.c
cgraphunit.c Fix few -Wformat-diag warnings. 2020-06-12 09:32:53 +02:00
ChangeLog Daily bump. 2020-07-23 00:16:28 +00:00
ChangeLog-1997
ChangeLog-1998
ChangeLog-1999
ChangeLog-2000
ChangeLog-2001
ChangeLog-2002
ChangeLog-2003
ChangeLog-2004
ChangeLog-2005
ChangeLog-2006
ChangeLog-2007
ChangeLog-2008
ChangeLog-2009
ChangeLog-2010
ChangeLog-2011
ChangeLog-2012
ChangeLog-2013
ChangeLog-2014
ChangeLog-2015
ChangeLog-2016
ChangeLog-2017
ChangeLog-2018
ChangeLog-2019
ChangeLog.dataflow
ChangeLog.gimple-classes
ChangeLog.graphite
ChangeLog.jit
ChangeLog.lib
ChangeLog.ptr
ChangeLog.tree-ssa
ChangeLog.tuples
cif-code.def sanitizer: do not inline no-sanitize into sanitizer fn 2020-06-09 14:35:43 +02:00
collect2-aix.c
collect2-aix.h
collect2.c
collect2.h
collect-utils.c handle dumpbase in offloading, adjust testsuite 2020-06-23 06:31:18 -03:00
collect-utils.h handle dumpbase in offloading, adjust testsuite 2020-06-23 06:31:18 -03:00
color-macros.h
combine-stack-adj.c
combine.c combine: Use single_set for is_just_move 2020-07-16 23:52:19 +00:00
common.md
common.opt diagnostics: Support conversion of tabs to spaces [PR49973] [PR86904] 2020-07-14 12:05:56 -04:00
compare-elim.c
conditions.h
config.build
config.gcc Initial Sapphire Rapids and Alder Lake support from ISA r40 2020-07-10 16:40:54 +08:00
config.host
config.in S/390: Emit vector alignment hints for z13 if AS accepts them 2020-06-16 17:30:28 +02:00
configure S/390: Emit vector alignment hints for z13 if AS accepts them 2020-06-16 17:30:28 +02:00
configure.ac S/390: Emit vector alignment hints for z13 if AS accepts them 2020-06-16 17:30:28 +02:00
context.c
context.h
convert.c middle-end: Remove truly_noop_truncation check from convert.c 2020-07-13 09:49:34 +01:00
convert.h
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
coretypes.h recog: Restore builds with Clang 2020-06-22 20:15:36 +01:00
coroutine-builtins.def
coroutine-passes.cc
coverage.c Do not stream all zeros for gcda files. 2020-07-02 10:16:02 +02:00
coverage.h
cppbuiltin.c
cppbuiltin.h
cppdefault.c
cppdefault.h
cprop.c
cse.c
cselib.c
cselib.h
cstamp-h.in
data-streamer-in.c
data-streamer-out.c
data-streamer.c
data-streamer.h
DATESTAMP Daily bump. 2020-07-23 00:16:28 +00:00
dbgcnt.c Fix few -Wformat-diag warnings. 2020-06-12 09:32:53 +02:00
dbgcnt.def
dbgcnt.h
dbxout.c
dbxout.h
dce.c
dce.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
diagnostic-color.c
diagnostic-color.h
diagnostic-core.h
diagnostic-event-id.h
diagnostic-format-json.cc diagnostics: Support conversion of tabs to spaces [PR49973] [PR86904] 2020-07-14 12:05:56 -04:00
diagnostic-metadata.h
diagnostic-path.h
diagnostic-show-locus.c diagnostics: Support conversion of tabs to spaces [PR49973] [PR86904] 2020-07-14 12:05:56 -04:00
diagnostic-url.h
diagnostic.c diagnostics: Support conversion of tabs to spaces [PR49973] [PR86904] 2020-07-14 12:05:56 -04:00
diagnostic.def
diagnostic.h diagnostics: Support conversion of tabs to spaces [PR49973] [PR86904] 2020-07-14 12:05:56 -04:00
digraph.cc
digraph.h
dojump.c
dojump.h
dominance.c
dominance.h
domwalk.c
domwalk.h
double-int.c
double-int.h
dse.c
dump-context.h
dumpfile.c dump: filenames containing - 2020-07-22 08:43:26 -07:00
dumpfile.h Add -fdump-profile-report. 2020-07-10 10:10:50 +02:00
dwarf2asm.c
dwarf2asm.h
dwarf2cfi.c
dwarf2out.c
dwarf2out.h
early-remat.c
edit-context.c
edit-context.h
emit-rtl.c middle-end/95493 - bogus MEM_ATTRS for variable array access 2020-06-05 08:35:44 +02:00
emit-rtl.h
errors.c
errors.h
escaped_string.h
et-forest.c
et-forest.h
except.c
except.h
exec-tool.in
explow.c Reunify x86 stack checking implementation 2020-07-16 18:13:56 +02:00
explow.h
expmed.c expmed: Fix possible use of NULL_RTX return value from emit_store_flag 2020-07-22 12:38:56 +01:00
expmed.h
expr.c expr: Allow scalar_int_mode target mode when converting a constant 2020-07-22 12:34:46 +01:00
expr.h
fibonacci_heap.c
fibonacci_heap.h
file-find.c
file-find.h
file-prefix-map.c
file-prefix-map.h
final.c
fixed-value.c
fixed-value.h
flag-types.h
flags.h
fold-const-call.c
fold-const-call.h
fold-const.c Correct handling of constant representations containing embedded nuls. 2020-07-20 12:08:58 -06:00
fold-const.h
fp-test.c
FSFChangeLog
FSFChangeLog.10
FSFChangeLog.11
function-abi.cc
function-abi.h
function-tests.c
function.c middle-end: Prefer TRULY_NOOP_TRUNCATION_MODES_P over raw target hook. 2020-07-17 14:06:45 +01:00
function.h
fwprop.c
gcc-ar.c
gcc-main.c
gcc-plugin.h
gcc-rich-location.c
gcc-rich-location.h
gcc-symtab.h
gcc.c [PR95456] avoid memcpy (_, NULL, 0) in gcc.c 2020-06-05 22:31:19 -03:00
gcc.h
gcov-counter.def
gcov-dump.c gcov-dump: fix build for i386 2020-07-03 13:45:45 +02:00
gcov-io.c gcov-tool: Fix merging of different endian coverage data [PR96267] 2020-07-23 15:04:17 +02:00
gcov-io.h Make TOPN counter dynamically allocated. 2020-06-02 12:11:02 +02:00
gcov-iov.c
gcov-tool.c gcov*: collapse lisence header to 2 lines in --version. 2020-06-17 10:58:04 +02:00
gcov.c Do not stream all zeros for gcda files. 2020-07-02 10:16:02 +02:00
gcse-common.c
gcse-common.h
gcse.c
gcse.h
gdbasan.in
gdbhooks.py
gdbinit.in
gen-pass-instances.awk
genattr-common.c
genattr.c
genattrtab.c
genautomata.c
gencfn-macros.c
gencheck.c
genchecksum.c
gencodes.c
genconditions.c
genconfig.c
genconstants.c
genemit.c
genenums.c
generic-match-head.c
generic-match.h
genextract.c
genflags.c
gengenrtl.c
gengtype-lex.l
gengtype-parse.c
gengtype-state.c
gengtype.c
gengtype.h
genhooks.c
genmatch.c
genmddeps.c
genmddump.c
genmodes.c
genmultilib
genopinit.c
genoutput.c
genpeep.c
genpreds.c
genrecog.c
gensupport.c
gensupport.h
gentarget-def.c
ggc-common.c
ggc-internal.h
ggc-none.c
ggc-page.c
ggc-tests.c
ggc.h
gimple-array-bounds.cc
gimple-array-bounds.h
gimple-builder.c
gimple-builder.h
gimple-expr.c
gimple-expr.h
gimple-fold.c gimple-fold: Handle bitfields in fold_const_aggregate_ref_1 [PR93121] 2020-07-20 10:24:19 +02:00
gimple-fold.h
gimple-isel.cc VEC_COND_EXPR: clean up first argument 2020-06-25 08:57:47 +02:00
gimple-iterator.c
gimple-iterator.h
gimple-laddress.c
gimple-loop-interchange.cc
gimple-loop-jam.c
gimple-loop-versioning.cc Merge evrp uses of substitute_and_fold_engine into the engine itself. 2020-06-10 15:09:37 +02:00
gimple-low.c
gimple-low.h
gimple-match-head.c
gimple-match.h
gimple-predict.h
gimple-pretty-print.c silence empty-body warning 2020-06-18 13:19:03 +02:00
gimple-pretty-print.h
gimple-ssa-backprop.c
gimple-ssa-evrp-analyze.c
gimple-ssa-evrp-analyze.h Move simplification of statements using ranges into its own class. 2020-06-27 14:11:41 +02:00
gimple-ssa-evrp.c Move simplification of statements using ranges into its own class. 2020-06-27 14:11:41 +02:00
gimple-ssa-isolate-paths.c
gimple-ssa-nonnull-compare.c
gimple-ssa-split-paths.c tree-optimization/95855 - Add checks to avoid spoiling if-conversion if 2020-06-30 15:54:07 +02:00
gimple-ssa-sprintf.c
gimple-ssa-store-merging.c Extend store merging to STRING_CST 2020-07-03 18:31:04 +02:00
gimple-ssa-strength-reduction.c
gimple-ssa-warn-alloca.c
gimple-ssa-warn-restrict.c PR middle-end/95353 - spurious -Wstringop-overflow writing to a trailing array plus offset 2020-06-10 12:02:12 -06:00
gimple-ssa-warn-restrict.h
gimple-ssa.h
gimple-streamer-in.c
gimple-streamer-out.c
gimple-streamer.h
gimple-walk.c
gimple-walk.h
gimple.c
gimple.def
gimple.h Extend store merging to STRING_CST 2020-07-03 18:31:04 +02:00
gimplify-me.c
gimplify-me.h
gimplify.c openacc: Don't strip TO_PSET/POINTER for enter/exit data 2020-07-13 03:21:20 -07:00
gimplify.h
glimits.h c: Add C2X BOOL_MAX and BOOL_WIDTH to limits.h 2020-07-10 21:35:51 +00:00
godump.c
graph.c
graph.h
graphds.c
graphds.h
graphite-dependences.c move ILS include to system.h 2020-07-01 13:24:16 +02:00
graphite-isl-ast-to-gimple.c move ILS include to system.h 2020-07-01 13:24:16 +02:00
graphite-optimize-isl.c move ILS include to system.h 2020-07-01 13:24:16 +02:00
graphite-poly.c move ILS include to system.h 2020-07-01 13:24:16 +02:00
graphite-scop-detection.c move ILS include to system.h 2020-07-01 13:24:16 +02:00
graphite-sese-to-poly.c move ILS include to system.h 2020-07-01 13:24:16 +02:00
graphite.c move ILS include to system.h 2020-07-01 13:24:16 +02:00
graphite.h move ILS include to system.h 2020-07-01 13:24:16 +02:00
graphviz.cc
graphviz.h
gsstruct.def
gstab.h
gsyms.h
gsyslimits.h
gtm-builtins.def
haifa-sched.c
hard-reg-set.h
hash-map-tests.c
hash-map-traits.h
hash-map.h core: formatting & comment 2020-07-14 06:29:12 -07:00
hash-set-tests.c
hash-set.h
hash-table.c
hash-table.h
hash-traits.h
highlev-plugin-common.h
hooks.c
hooks.h
host-default.c
hosthooks-def.h
hosthooks.h
hsa-brig-format.h
hsa-brig.c
hsa-builtins.def
hsa-common.c
hsa-common.h
hsa-dump.c
hsa-gen.c [HSA] Avoid ICE when "HSA does not implement indirect calls" 2020-06-17 23:46:15 +02:00
hsa-regalloc.c
hw-doloop.c
hw-doloop.h
hwint.c
hwint.h
ifcvt.c
ifcvt.h
inchash.c
inchash.h
incpath.c preprocessor: add_path simplifications 2020-07-22 08:43:25 -07:00
incpath.h core: formatting & comment 2020-07-14 06:29:12 -07:00
init-regs.c
input.c diagnostics: Support conversion of tabs to spaces [PR49973] [PR86904] 2020-07-14 12:05:56 -04:00
input.h diagnostics: Support conversion of tabs to spaces [PR49973] [PR86904] 2020-07-14 12:05:56 -04:00
insn-addr.h
insn-notes.def
int-vector-builder.h
internal-fn.c middle-end: Improve RTL expansion in expand_mul_overflow, 2020-07-11 20:03:39 +01:00
internal-fn.def IFN/optabs: Support vector load/store with length 2020-07-08 02:33:03 -05:00
internal-fn.h
intl.c
intl.h
ipa-comdats.c
ipa-cp.c
ipa-devirt.c ipa-devirt: Fix crash in obj_type_ref_class [PR95114] 2020-07-13 13:47:39 +01:00
ipa-fnsummary.c ipa-fnsummary: Fix ICE with switch predicates [PR96130] 2020-07-13 18:25:53 +02:00
ipa-fnsummary.h
ipa-hsa.c
ipa-icf-gimple.c
ipa-icf-gimple.h
ipa-icf.c
ipa-icf.h
ipa-inline-analysis.c
ipa-inline-transform.c
ipa-inline.c sanitizer: do not inline no-sanitize into sanitizer fn 2020-06-09 14:35:43 +02:00
ipa-inline.h
ipa-param-manipulation.c ipa-sra: Prevent constructing debug info from wrong argument 2020-07-02 14:30:50 +02:00
ipa-param-manipulation.h
ipa-polymorphic-call.c
ipa-predicate.c
ipa-predicate.h
ipa-profile.c Make TOPN counter dynamically allocated. 2020-06-02 12:11:02 +02:00
ipa-prop.c
ipa-prop.h
ipa-pure-const.c
ipa-ref.c
ipa-ref.h
ipa-reference.c
ipa-reference.h
ipa-split.c
ipa-sra.c ipa-sra: Avoid transitive splits with type mismatches (PR 96040) 2020-07-03 17:37:33 +02:00
ipa-utils.c
ipa-utils.h Optimize ODR enum streaming 2020-06-03 21:24:38 +02:00
ipa-visibility.c
ipa.c
ira-build.c
ira-color.c
ira-conflicts.c
ira-costs.c
ira-emit.c
ira-int.h
ira-lives.c
ira.c ira: Fix unnecessary register spill 2020-07-09 10:14:19 +01:00
ira.h
is-a.h
json.cc
json.h
jump.c
langhooks-def.h [OpenMP] Fix mapping of artificial variables (PR94874) 2020-06-03 12:30:04 +02:00
langhooks.c [OpenMP] Fix mapping of artificial variables (PR94874) 2020-06-03 12:30:04 +02:00
langhooks.h [OpenMP] Fix mapping of artificial variables (PR94874) 2020-06-03 12:30:04 +02:00
LANGUAGES
lcm.c
lcm.h
libfuncs.h
limitx.h
limity.h
lists.c
lock-and-run.sh
loop-doloop.c
loop-init.c
loop-invariant.c
loop-iv.c
loop-unroll.c
loop-unroll.h
lower-subreg.c
lower-subreg.h
lra-assigns.c
lra-coalesce.c
lra-constraints.c Add processing STRICT_LOW_PART for matched reloads. 2020-06-04 12:04:48 -04:00
lra-eliminations.c
lra-int.h
lra-lives.c
lra-remat.c
lra-spills.c
lra.c Add processing STRICT_LOW_PART for matched reloads. 2020-06-04 12:04:48 -04:00
lra.h
lto-cgraph.c openmp: ensure variables in offload table are streamed out (PRs 94848 + 95551) 2020-06-08 23:24:57 +02:00
lto-compress.c
lto-compress.h
lto-opts.c LTO: pick up -fcf-protection flag for the link step 2020-07-14 10:12:08 +02:00
lto-section-in.c Optimize ODR enum streaming 2020-06-03 21:24:38 +02:00
lto-section-names.h
lto-section-out.c
lto-streamer-in.c Simplify streaming of tree references 2020-06-02 17:39:58 +02:00
lto-streamer-out.c fix LTO streaming order dependence on randomness 2020-07-07 08:43:23 +02:00
lto-streamer.c
lto-streamer.h Optimize ODR enum streaming 2020-06-03 21:24:38 +02:00
lto-wrapper.c LTO: pick up -fcf-protection flag for the link step 2020-07-14 10:12:08 +02:00
machmode.def
machmode.h
main.c
Makefile.in build: Fix TAGS target in gcc/Makefile.in 2020-07-16 14:44:45 +02:00
match.pd match.pd: (x & y) - (x | y) - 1 -> ~(x ^ y) simplification [PR94882] 2020-07-01 14:49:30 -06:00
mcf.c
mem-stats-traits.h
mem-stats.h
memmodel.h
memory-block.cc
memory-block.h
mkconfig.sh
mode-classes.def
mode-switching.c
modulo-sched.c
multiple_target.c Fix target clone indirection elimination 2020-06-26 15:49:52 -06:00
omp-builtins.def
omp-expand.c openmp: Fix up loop-21.c 2020-07-15 16:45:02 +02:00
omp-expand.h
omp-general.c openmp: Fix up loop-21.c 2020-07-15 16:45:02 +02:00
omp-general.h openmp: Fix up loop-21.c 2020-07-15 16:45:02 +02:00
omp-grid.c
omp-grid.h
omp-low.c openmp: Fix two pastos in non-rect loop OpenMP lowering. 2020-06-24 10:25:37 +02:00
omp-low.h
omp-offload.c openmp: ensure variables in offload table are streamed out (PRs 94848 + 95551) 2020-06-09 16:31:22 +02:00
omp-offload.h
omp-simd-clone.c
omp-simd-clone.h
ONEWS
opt-functions.awk
opt-gather.awk
opt-include.awk
opt-problem.cc
opt-problem.h
opt-read.awk
opt-suggestions.c
opt-suggestions.h
optabs-libfuncs.c
optabs-libfuncs.h
optabs-query.c vect: Support length-based partial vectors approach 2020-07-19 21:13:28 -05:00
optabs-query.h vect: Support length-based partial vectors approach 2020-07-19 21:13:28 -05:00
optabs-tree.c
optabs-tree.h
optabs.c Lower VEC_COND_EXPR into internal functions. 2020-06-17 12:04:22 +02:00
optabs.def IFN/optabs: Support vector load/store with length 2020-07-08 02:33:03 -05:00
optabs.h Lower VEC_COND_EXPR into internal functions. 2020-06-17 12:04:22 +02:00
optc-gen.awk
optc-save-gen.awk arc: add exceptions for PR92860. 2020-06-29 10:55:33 +02:00
opth-gen.awk Add gcc_assert that &global_options are not dirty modified. 2020-06-10 10:04:14 +02:00
optinfo-emit-json.cc
optinfo-emit-json.h
optinfo.cc
optinfo.h
opts-common.c
opts-diagnostic.h
opts-global.c
opts.c diagnostics: Support conversion of tabs to spaces [PR49973] [PR86904] 2020-07-14 12:05:56 -04:00
opts.h
ordered-hash-map-tests.cc
ordered-hash-map.h
output.h
params.opt vect: Support length-based partial vectors approach 2020-07-19 21:13:28 -05:00
pass_manager.h
passes.c Add -fdump-profile-report. 2020-07-10 10:10:50 +02:00
passes.def Lower VEC_COND_EXPR into internal functions. 2020-06-17 12:04:22 +02:00
plugin.c
plugin.def
plugin.h
poly-int-types.h
poly-int.h
postreload-gcse.c
postreload.c PR bootstrap/95555 - powepc64 bootstrap failure due to -Wmaybe-uninitialized in reload_cse_simplify_operands 2020-06-08 09:06:48 -06:00
predict.c
predict.def
predict.h
prefix.c
prefix.h
pretty-print.c
pretty-print.h
print-rtl-function.c
print-rtl.c slim up mem exprs to avoid line breaks in -fverbose-asm 2020-06-10 23:58:23 -03:00
print-rtl.h
print-tree.c
print-tree.h
profile-count.c
profile-count.h
profile.c Make TOPN counter dynamically allocated. 2020-06-02 12:11:02 +02:00
profile.h
range-op.cc
range-op.h
range.cc
range.h
read-md.c
read-md.h
read-rtl-function.c
read-rtl-function.h
read-rtl.c
README.Portability
real.c
real.h
realmpfr.c
realmpfr.h
recog.c
recog.h recog: Restore builds with Clang 2020-06-22 20:15:36 +01:00
ree.c
reg-notes.def
reg-stack.c
regcprop.c
regcprop.h
reginfo.c
regrename.c
regrename.h
regs.h
regset.h
regstat.c
reload1.c
reload.c
reload.h
reorg.c
resource.c
resource.h
rtl-error.c
rtl-error.h
rtl-iter.h
rtl-tests.c
rtl.c
rtl.def
rtl.h
rtlanal.c
rtlhash.c
rtlhash.h
rtlhooks-def.h
rtlhooks.c
rtx-vector-builder.c
rtx-vector-builder.h
run-rtl-passes.c
run-rtl-passes.h
sancov.c
sanitizer.def tsan: Add optional support for distinguishing volatiles 2020-06-09 21:22:24 +02:00
sanopt.c
sbitmap.c
sbitmap.h
sched-deps.c
sched-ebb.c
sched-int.h
sched-rgn.c
sel-sched-dump.c
sel-sched-dump.h
sel-sched-ir.c
sel-sched-ir.h
sel-sched.c
sel-sched.h
selftest-diagnostic.c
selftest-diagnostic.h
selftest-rtl.c
selftest-rtl.h
selftest-run-tests.c
selftest.c
selftest.h
sese.c
sese.h
shortest-paths.h
shrink-wrap.c Improve shrink wrapping debug output 2020-07-10 14:26:05 -06:00
shrink-wrap.h
signop.h
simplify-rtx.c middle-end: Optimize (A&C)^(B&C) to (A^B)&C in simplify_rtx (take 3). 2020-06-29 17:37:51 +01:00
sort.cc
sparseset.c
sparseset.h
spellcheck-tree.c
spellcheck-tree.h
spellcheck.c The variant of editing distance we use doesn't satisfy the triangle inequality. 2020-07-01 14:59:56 -06:00
spellcheck.h
sreal.c
sreal.h
ssa-iterators.h
ssa.h
stab.def
stack-ptr-mod.c
statistics.c
statistics.h
stmt.c
stmt.h
stor-layout.c
stor-layout.h
store-motion.c
streamer-hooks.c
streamer-hooks.h
stringpool.c
stringpool.h
substring-locations.c
substring-locations.h
symbol-summary.h
symtab.c
sync-builtins.def
system.h Redefine NULL to nullptr 2020-07-02 12:38:18 +02:00
target-def.h
target-globals.c
target-globals.h
target-hooks-macros.h
target-insns.def
target.def Add TARGET_LOWER_LOCAL_DECL_ALIGNMENT [PR95237] 2020-07-21 16:25:43 -07:00
target.h
targhooks.c
targhooks.h
timevar.c
timevar.def Optimize ODR enum streaming 2020-06-03 21:24:38 +02:00
timevar.h
toplev.c PR target/96260 - KASAN should work even back-end not porting anything. 2020-07-23 14:57:31 +08:00
toplev.h
tracer.c
tracer.h
trans-mem.c tmmark: verify_ssa failed [PR95569] 2020-06-10 11:05:06 +02:00
trans-mem.h
tree-affine.c
tree-affine.h
tree-call-cdce.c
tree-cfg.c tree-cfg: Fix ICE with switch stmt to unreachable opt and forced labels [PR95857] 2020-07-02 11:38:20 +02:00
tree-cfg.h
tree-cfgcleanup.c
tree-cfgcleanup.h
tree-chrec.c
tree-chrec.h
tree-complex.c
tree-core.h core: add tree-node comments 2020-07-14 06:11:53 -07:00
tree-data-ref.c
tree-data-ref.h
tree-dfa.c
tree-dfa.h
tree-diagnostic-path.cc diagnostics: Support conversion of tabs to spaces [PR49973] [PR86904] 2020-07-14 12:05:56 -04:00
tree-diagnostic.c
tree-diagnostic.h
tree-dump.c
tree-dump.h
tree-eh.c ipa-sra: Do not remove statements necessary because of non-call EH (PR 95113) 2020-06-04 17:03:27 +02:00
tree-eh.h ipa-sra: Do not remove statements necessary because of non-call EH (PR 95113) 2020-06-04 17:03:27 +02:00
tree-emutls.c
tree-hash-traits.h
tree-hasher.h
tree-if-conv.c
tree-if-conv.h
tree-inline.c
tree-inline.h
tree-into-ssa.c
tree-into-ssa.h
tree-iterator.c
tree-iterator.h
tree-loop-distribution.c Schedule reduction partition in the last. 2020-07-09 18:14:26 +08:00
tree-nested.c Reunify x86 stack checking implementation 2020-07-16 18:13:56 +02:00
tree-nested.h
tree-nrv.c
tree-object-size.c PR middle-end/95353 - spurious -Wstringop-overflow writing to a trailing array plus offset 2020-06-10 12:02:12 -06:00
tree-object-size.h PR middle-end/95353 - spurious -Wstringop-overflow writing to a trailing array plus offset 2020-06-10 12:02:12 -06:00
tree-outof-ssa.c
tree-outof-ssa.h
tree-parloops.c
tree-parloops.h
tree-pass.h Lower VEC_COND_EXPR into internal functions. 2020-06-17 12:04:22 +02:00
tree-phinodes.c
tree-phinodes.h
tree-predcom.c
tree-pretty-print.c ipa-devirt: Fix crash in obj_type_ref_class [PR95114] 2020-07-13 13:47:39 +01:00
tree-pretty-print.h openmp: Initial part of OpenMP 5.0 non-rectangular loop support 2020-06-16 16:31:13 +02:00
tree-profile.c
tree-scalar-evolution.c
tree-scalar-evolution.h
tree-sra.c Fix ICE in verify_sra_access_forest 2020-06-15 19:54:01 +02:00
tree-sra.h
tree-ssa-address.c
tree-ssa-address.h
tree-ssa-alias.c
tree-ssa-alias.h
tree-ssa-ccp.c Use gsi_bb instead of iterator->bb. 2020-06-29 13:28:16 +02:00
tree-ssa-ccp.h
tree-ssa-coalesce.c
tree-ssa-coalesce.h
tree-ssa-copy.c Merge evrp uses of substitute_and_fold_engine into the engine itself. 2020-06-10 15:09:37 +02:00
tree-ssa-dce.c ipa-sra: Do not remove statements necessary because of non-call EH (PR 95113) 2020-06-04 17:03:27 +02:00
tree-ssa-dce.h
tree-ssa-dom.c Move simplification of statements using ranges into its own class. 2020-06-27 14:11:41 +02:00
tree-ssa-dom.h
tree-ssa-dse.c
tree-ssa-dse.h
tree-ssa-forwprop.c forwprop: simplify_vector_constructor follow-up fix [PR95713] 2020-06-18 12:12:43 +02:00
tree-ssa-ifcombine.c
tree-ssa-live.c
tree-ssa-live.h
tree-ssa-loop-ch.c
tree-ssa-loop-im.c
tree-ssa-loop-ivcanon.c Introduce flag_cunroll_grow_size for cunroll 2020-06-07 17:35:01 +08:00
tree-ssa-loop-ivopts.c ivopts: Handle vector with length IFNs 2020-07-23 07:40:09 -05:00
tree-ssa-loop-ivopts.h
tree-ssa-loop-manip.c
tree-ssa-loop-manip.h
tree-ssa-loop-niter.c
tree-ssa-loop-niter.h
tree-ssa-loop-prefetch.c
tree-ssa-loop-split.c
tree-ssa-loop-unswitch.c
tree-ssa-loop.c
tree-ssa-loop.h
tree-ssa-math-opts.c Use gsi_bb instead of iterator->bb. 2020-06-29 13:28:16 +02:00
tree-ssa-operands.c
tree-ssa-operands.h
tree-ssa-phiopt.c phiopt: Improve minmax optimization [PR95699] 2020-06-18 12:12:43 +02:00
tree-ssa-phiprop.c
tree-ssa-pre.c
tree-ssa-propagate.c Fix pasto in the substitute_and_fold_engine merge with evrp. 2020-06-16 20:46:42 +02:00
tree-ssa-propagate.h Merge evrp uses of substitute_and_fold_engine into the engine itself. 2020-06-10 15:09:37 +02:00
tree-ssa-reassoc.c Take into account range info to optimize range tests into bit tests 2020-06-26 15:26:48 +02:00
tree-ssa-sccvn.c Make memory copy functions scalar storage order barriers 2020-07-09 00:59:59 +02:00
tree-ssa-sccvn.h
tree-ssa-scopedtables.c
tree-ssa-scopedtables.h
tree-ssa-sink.c
tree-ssa-strlen.c PR middle-end/95353 - spurious -Wstringop-overflow writing to a trailing array plus offset 2020-06-10 12:02:12 -06:00
tree-ssa-strlen.h
tree-ssa-structalias.c
tree-ssa-tail-merge.c
tree-ssa-ter.c
tree-ssa-ter.h
tree-ssa-threadbackward.c
tree-ssa-threadedge.c
tree-ssa-threadedge.h
tree-ssa-threadupdate.c
tree-ssa-threadupdate.h
tree-ssa-uncprop.c
tree-ssa-uninit.c Implement a solution for PR middle-end/10138 and PR middle-end/95136. 2020-06-04 16:08:32 -06:00
tree-ssa.c
tree-ssa.h
tree-ssanames.c
tree-ssanames.h
tree-stdarg.c
tree-stdarg.h
tree-streamer-in.c Optimize ODR enum streaming 2020-06-03 21:24:38 +02:00
tree-streamer-out.c Optimize ODR enum streaming 2020-06-03 21:24:38 +02:00
tree-streamer.c
tree-streamer.h
tree-switch-conversion.c
tree-switch-conversion.h
tree-tailcall.c
tree-vect-data-refs.c remove premature vect_verify_datarefs_alignment 2020-07-09 13:17:07 +02:00
tree-vect-generic.c VEC_COND_EXPR: do not expand comparisons feeding it 2020-07-02 12:41:42 +02:00
tree-vect-loop-manip.c vect: Support length-based partial vectors approach 2020-07-19 21:13:28 -05:00
tree-vect-loop.c vect: Support length-based partial vectors approach 2020-07-19 21:13:28 -05:00
tree-vect-patterns.c vectorizer: add _bb_vec_info::region_stmts and reverse_region_stmts 2020-06-18 16:58:27 +02:00
tree-vect-slp.c tree-optimization/96163 - fix placement issue with SLP and vectors 2020-07-13 16:50:07 +02:00
tree-vect-stmts.c vect: Fix an ICE in vectorizable_simd_clone_call 2020-07-20 19:47:05 +01:00
tree-vector-builder.c
tree-vector-builder.h
tree-vectorizer.c refactor SLP constant insertion and provde entry insert helper 2020-07-03 11:29:16 +02:00
tree-vectorizer.h vect: Support length-based partial vectors approach 2020-07-19 21:13:28 -05:00
tree-vrp.c Move simplification of statements using ranges into its own class. 2020-06-27 14:11:41 +02:00
tree-vrp.h
tree.c Correct handling of constant representations containing embedded nuls. 2020-07-20 12:08:58 -06:00
tree.def
tree.h Correct handling of constant representations containing embedded nuls. 2020-07-20 12:08:58 -06:00
treestruct.def
tristate.cc
tristate.h
tsan.c tsan: Add param to disable func-entry-exit instrumentation 2020-06-12 17:29:45 +02:00
tsan.h
tsystem.h
typeclass.h
typed-splay-tree.c
typed-splay-tree.h
ubsan.c
ubsan.h
unique-ptr-tests.cc
valtrack.c
valtrack.h
value-prof.c Make TOPN counter dynamically allocated. 2020-06-02 12:11:02 +02:00
value-prof.h
value-range-equiv.cc
value-range-equiv.h
value-range.cc value-range: Fix handling of POLY_INT_CST anti-ranges [PR96146] 2020-07-11 13:25:26 +01:00
value-range.h
var-tracking.c make var-tracking iteration consistent 2020-07-13 09:30:12 +02:00
varasm.c avoid early asm output 2020-06-18 12:11:44 +02:00
varasm.h
varpool.c
vec-perm-indices.c
vec-perm-indices.h
vec.c
vec.h
vector-builder.h
version.c
version.h
vmsdbg.h
vmsdbgout.c
vr-values.c Move simplification of statements using ranges into its own class. 2020-06-27 14:11:41 +02:00
vr-values.h Move simplification of statements using ranges into its own class. 2020-06-27 14:11:41 +02:00
vtable-verify.c
vtable-verify.h
web.c
wide-int-bitmask.h
wide-int-print.cc
wide-int-print.h
wide-int.cc
wide-int.h
xcoff.h
xcoffout.c
xcoffout.h

Copyright (C) 2000-2020 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 now 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
---------------

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.


Avoid unnecessary test before free
----------------------------------

Since SunOS 4 stopped being a reasonable portability target,
(which happened around 2007) there has been no need to guard
against "free (NULL)".  Thus, any guard like the following
constitutes a redundant test:

  if (P)
    free (P);

It is better to avoid the test.[*]
Instead, simply free P, regardless of whether it is NULL.

[*] However, if your profiling exposes a test like this in a
performance-critical loop, say where P is nearly always NULL, and
the cost of calling free on a NULL pointer would be prohibitively
high, consider using __builtin_expect, e.g., like this:

  if (__builtin_expect (ptr != NULL, 0))
    free (ptr);



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.