gcc/gcc
Hongbo Zhang dc878fea7a [AArch64] Add HXT Phecda core support
HXT semiconductor's CPU core Phecda, as a variant of Qualcomm qdf24xx,
reuses the same tuning structure and pipeline with it.

Applied on behalf of: Hongbo Zhang <hongbo.zhang@linaro.org>

	* config/aarch64/aarch64-cores.def: Add phecda core.
	* config/aarch64/aarch64-tune.md: Regenerate.
	* doc/invoke.texi: Add phecda core.

From-SVN: r263404
2018-08-08 14:23:59 +00:00
..
ada Add missing gcc-interface/ to 2018-07-31 ChangeLog entry 2018-08-07 05:54:11 +00:00
brig PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
c Avoid infinite loop with duplicate anonymous union fields (PR c/86690). 2018-08-03 16:25:35 +01:00
c-family PR tree-optimization/86650 - -Warray-bounds missing inlining context 2018-08-01 17:39:35 -06:00
common S/390: Remove support for g5 and g6 machines 2018-08-08 10:55:56 +00:00
config [AArch64] Add HXT Phecda core support 2018-08-08 14:23:59 +00:00
cp P0595R1 - is_constant_evaluated 2018-08-08 11:00:51 +02:00
doc [AArch64] Add HXT Phecda core support 2018-08-08 14:23:59 +00:00
fortran [OpenACC] cleanup trans-stmt.h 2018-08-07 15:18:36 -07:00
ginclude stddef.h: Remove an obsolete comment on FreeBSD 5. 2018-06-25 22:29:55 +00:00
go libgo: uncomment trace.Stop() call in testing package 2018-08-07 17:28:22 +00:00
jit Makefile.in: Add opt-suggestions.o. 2018-06-28 07:08:01 +00:00
lto PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
objc
objcp
po * de.po, sv.po: Update. 2018-07-30 16:31:04 +01:00
testsuite S/390: Fix PR85295 2018-08-08 12:38:51 +00:00
ABOUT-GCC-NLS
acinclude.m4
aclocal.m4
addresses.h
alias.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
alias.h
align.h align.h (align_flags): Use member initialization. 2018-07-19 16:12:06 -06:00
alloc-pool.c
alloc-pool.h
asan.c
asan.h
attribs.c PR c/86453 - error: type variant differs by TYPE_PACKED in free_lang_data since r255469 2018-07-12 10:21:06 -06:00
attribs.h
auto-inc-dec.c
auto-profile.c
auto-profile.h
backend.h
BASE-VER
basic-block.h
bb-reorder.c re PR rtl-optimization/86108 (crash during unwinding with -O2) 2018-06-16 08:50:31 +02:00
bb-reorder.h
bitmap.c
bitmap.h
brig-builtins.def
bt-load.c
builtin-attrs.def Add __builtin_speculation_safe_value 2018-07-31 17:35:32 +00:00
builtin-types.def Add __builtin_speculation_safe_value 2018-07-31 17:35:32 +00:00
builtins.c Add __builtin_speculation_safe_value 2018-07-31 17:35:32 +00:00
builtins.def Add __builtin_speculation_safe_value 2018-07-31 17:35:32 +00:00
builtins.h PR tree-optimization/86622 - incorrect strlen of array of array plus variable offset 2018-07-24 20:11:31 -06:00
caller-save.c
calls.c PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
calls.h
ccmp.c
ccmp.h
cfg-flags.def
cfg.c Convert dump and optgroup flags to enums 2018-06-08 12:50:19 +00:00
cfg.h
cfganal.c
cfganal.h
cfgbuild.c
cfgbuild.h
cfgcleanup.c
cfgcleanup.h
cfgexpand.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
cfgexpand.h
cfghooks.c Convert dump and optgroup flags to enums 2018-06-08 12:50:19 +00:00
cfghooks.h
cfgloop.c Introduce dump_location_t 2018-06-26 13:34:59 +00:00
cfgloop.h Introduce dump_location_t 2018-06-26 13:34:59 +00:00
cfgloopanal.c
cfgloopmanip.c
cfgloopmanip.h
cfgrtl.c cfgrtl.c (fixup_reorder_chain): Do not emit NOPs in DECL_IGNORED_P functions. 2018-06-21 17:03:58 +00:00
cfgrtl.h
cgraph.c Hide alt_dump_file within dumpfile.c 2018-06-28 14:55:42 +00:00
cgraph.h Come up with cgraph_node::get_uid and make cgraph_node::uid private. 2018-06-08 12:36:26 +00:00
cgraphbuild.c Remove MPX 2018-06-08 07:53:31 +00:00
cgraphclones.c
cgraphunit.c PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
ChangeLog [AArch64] Add HXT Phecda core support 2018-08-08 14:23:59 +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.dataflow
ChangeLog.gimple-classes
ChangeLog.graphite
ChangeLog.jit
ChangeLog.lib
ChangeLog.ptr
ChangeLog.tree-ssa
ChangeLog.tuples
cif-code.def
collect2-aix.c
collect2-aix.h
collect2.c Wrap is_static with COLLECT_EXPORT_LIST 2018-06-19 18:42:37 -04:00
collect2.h
collect-utils.c
collect-utils.h
color-macros.h
combine-stack-adj.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
combine.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
common.md
common.opt Add support for -nolibc 2018-07-31 09:24:41 +00:00
compare-elim.c compare-elim.c (try_merge_compare): Don't merge compare if address contains a side effect. 2018-06-07 13:55:05 -04:00
conditions.h
config.build
config.gcc S/390: Remove support for g5 and g6 machines 2018-08-08 10:55:56 +00:00
config.host
config.in
configure Add missing '|' as wrong patch was applied. 2018-07-05 14:28:01 -06:00
configure.ac add support for --disable-gcov 2018-06-27 10:04:25 +00:00
context.c
context.h
convert.c
convert.h
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
coretypes.h Add "-fsave-optimization-record" 2018-07-20 15:37:23 +00:00
coverage.c Fix target clones (PR gcov-profile/85370). 2018-07-31 10:34:02 +00:00
coverage.h
cppbuiltin.c
cppbuiltin.h
cppdefault.c
cppdefault.h
cprop.c
cse.c cse support for clobber_high 2018-08-06 09:54:28 +00:00
cselib.c cse support for clobber_high 2018-08-06 09:54:28 +00:00
cselib.h cse support for clobber_high 2018-08-06 09:54:28 +00:00
cstamp-h.in
data-streamer-in.c
data-streamer-out.c
data-streamer.c
data-streamer.h
DATESTAMP Daily bump. 2018-08-08 00:16:28 +00:00
dbgcnt.c
dbgcnt.def
dbgcnt.h
dbxout.c Remove MPX 2018-06-08 07:53:31 +00:00
dbxout.h
dce.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
dce.h
ddg.c
ddg.h
debug.c
debug.h Introduce instance discriminators 2018-07-31 21:19:13 +00:00
defaults.h re PR target/86651 (lto-wrapper.exe: fatal error: simple_object_copy_lto_debug_sections not implemented: Invalid argument) 2018-08-01 06:52:44 +00:00
DEV-PHASE
df-core.c
df-problems.c nds32.c (nds32_hard_regno_mode_ok): Replace > with >=. 2018-08-02 16:39:59 -06:00
df-scan.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
df.h
dfp.c
dfp.h
diagnostic-color.c
diagnostic-color.h
diagnostic-core.h
diagnostic-show-locus.c Fix memory leak of pretty_printer prefixes 2018-08-02 20:07:28 +00:00
diagnostic.c [PATCH] Diagnostic included-from loop 2018-08-06 16:52:38 +00:00
diagnostic.def
diagnostic.h
dojump.c re PR tree-optimization/64946 ([AArch64] gcc.target/aarch64/vect-abs-compile.c - "abs" vectorization fails for char/short types) 2018-06-16 21:34:29 +00:00
dojump.h
dominance.c
dominance.h
domwalk.c
domwalk.h
double-int.c
double-int.h
dse.c
dump-context.h dumpfile.c: eliminate special-casing of dump_file/alt_dump_file 2018-07-31 19:22:48 +00:00
dumpfile.c dumpfile.c/h: add "const" to dump location ctors 2018-08-02 08:33:47 +00:00
dumpfile.h dumpfile.c/h: add "const" to dump location ctors 2018-08-02 08:33:47 +00:00
dwarf2asm.c
dwarf2asm.h
dwarf2cfi.c
dwarf2out.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
dwarf2out.h
early-remat.c Convert dump and optgroup flags to enums 2018-06-08 12:50:19 +00:00
edit-context.c
edit-context.h
emit-rtl.c Generation support for CLOBBER_HIGH 2018-08-06 09:16:24 +00:00
emit-rtl.h
errors.c
errors.h
et-forest.c
et-forest.h
except.c [c++] Don't emit exception tables for UI_NONE 2018-08-03 11:21:09 +00:00
except.h
exec-tool.in
explow.c Use poly_int rtx accessors instead of hwi accessors 2018-06-12 22:31:14 +00:00
explow.h
expmed.c re PR middle-end/86627 (Signed 128-bit division by 2 no longer expanded to RTL) 2018-07-24 16:23:18 +02:00
expmed.h
expr.c PR tree-optimization/86622 - incorrect strlen of array of array plus variable offset 2018-07-24 20:11:31 -06:00
expr.h Remove MPX 2018-06-08 07:53:31 +00:00
fibonacci_heap.c
fibonacci_heap.h
file-find.c
file-find.h
file-prefix-map.c
file-prefix-map.h
final.c Save discriminator info for LTO 2018-07-31 21:19:25 +00:00
fixed-value.c
fixed-value.h
flag-types.h
flags.h Clean up of new format of -falign-FOO. 2018-07-17 09:19:27 +00:00
fold-const-call.c
fold-const-call.h
fold-const.c fold-const.c (int_const_binop_1): Abstract... 2018-07-16 06:49:39 +00:00
fold-const.h fold-const.c (int_const_binop_1): Abstract... 2018-07-16 06:49:39 +00:00
fp-test.c
FSFChangeLog
FSFChangeLog.10
FSFChangeLog.11
function-tests.c Fix memory leak in selftest::test_expansion_to_rtl 2018-08-06 16:25:27 +00:00
function.c Revert "[ARM] Fix PR85434: spilling of stack protector guard's address on ARM" 2018-08-02 11:16:05 +00:00
function.h
fwprop.c
gcc-ar.c
gcc-main.c Makefile.in: Add opt-suggestions.o. 2018-06-28 07:08:01 +00:00
gcc-plugin.h
gcc-rich-location.c
gcc-rich-location.h
gcc-symtab.h
gcc.c Improve specs processing to allow %* in function arguments 2018-07-31 09:44:48 +00:00
gcc.h Makefile.in: Add opt-suggestions.o. 2018-06-28 07:08:01 +00:00
gcov-counter.def
gcov-dump.c
gcov-io.c When using -fprofile-generate=/some/path mangle absolute path of file (PR lto/85759). 2018-06-29 14:03:36 +00:00
gcov-io.h When using -fprofile-generate=/some/path mangle absolute path of file (PR lto/85759). 2018-06-29 14:03:36 +00:00
gcov-iov.c
gcov-tool.c
gcov.c Fix gcov misleading error (PR gcov-profile/86817). 2018-08-02 10:17:34 +00:00
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 Generation support for CLOBBER_HIGH 2018-08-06 09:16:24 +00:00
genconstants.c
genemit.c Generation support for CLOBBER_HIGH 2018-08-06 09:16:24 +00:00
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 re PR c/86617 (Volatile qualifier is ignored sometimes for unsigned char) 2018-07-23 13:23:51 +00:00
genmddeps.c
genmddump.c
genmodes.c
genmultilib
genopinit.c [gen/AArch64] Generate helpers for substituting iterator values into pattern names 2018-08-02 10:59:35 +00:00
genoutput.c
genpeep.c
genpreds.c
genrecog.c Generation support for CLOBBER_HIGH 2018-08-06 09:16:24 +00:00
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-builder.c
gimple-builder.h
gimple-expr.c
gimple-expr.h
gimple-fold.c PR tree-optimization/86650 - -Warray-bounds missing inlining context 2018-08-01 17:39:35 -06:00
gimple-fold.h PR middle-end/77357 - strlen of constant strings not folded 2018-07-09 14:33:48 -06:00
gimple-iterator.c [11/n] PR85694: Apply pattern matching to pattern definition statements 2018-06-30 12:48:51 +00:00
gimple-iterator.h [11/n] PR85694: Apply pattern matching to pattern definition statements 2018-06-30 12:48:51 +00:00
gimple-laddress.c
gimple-loop-interchange.cc Introduce dump_location_t 2018-06-26 13:34:59 +00:00
gimple-loop-jam.c
gimple-low.c
gimple-low.h
gimple-match-head.c Add IFN_COND_FMA functions 2018-07-12 13:01:33 +00:00
gimple-match.h Add IFN_COND_FMA functions 2018-07-12 13:01:33 +00:00
gimple-predict.h
gimple-pretty-print.c PR tree-optimization/86650 - -Warray-bounds missing inlining context 2018-08-01 17:39:35 -06:00
gimple-pretty-print.h
gimple-ssa-backprop.c re PR tree-optimization/64946 ([AArch64] gcc.target/aarch64/vect-abs-compile.c - "abs" vectorization fails for char/short types) 2018-06-16 21:34:29 +00:00
gimple-ssa-evrp-analyze.c
gimple-ssa-evrp-analyze.h
gimple-ssa-evrp.c
gimple-ssa-isolate-paths.c
gimple-ssa-nonnull-compare.c
gimple-ssa-split-paths.c
gimple-ssa-sprintf.c PR tree-optimization/86571 - AIX NaNQ and NaNS output format conflicts with __builtin_sprintf 2018-08-04 16:14:41 -06:00
gimple-ssa-store-merging.c re PR tree-optimization/86492 (store-merging wrong-code) 2018-07-12 09:39:33 +02:00
gimple-ssa-strength-reduction.c Convert dump and optgroup flags to enums 2018-06-08 12:50:19 +00:00
gimple-ssa-warn-alloca.c PR bootstrap/86621 - 'alloca' bound is unknown in tree-vect-slp.c:1437:16 2018-07-22 15:09:32 -06:00
gimple-ssa-warn-restrict.c PR tree-optimization/86650 - -Warray-bounds missing inlining context 2018-08-01 17:39:35 -06:00
gimple-ssa-warn-restrict.h PR tree-optimization/86650 - -Warray-bounds missing inlining context 2018-08-01 17:39:35 -06:00
gimple-ssa.h
gimple-streamer-in.c Save discriminator info for LTO 2018-07-31 21:19:25 +00:00
gimple-streamer-out.c Save discriminator info for LTO 2018-07-31 21:19:25 +00:00
gimple-streamer.h
gimple-walk.c
gimple-walk.h
gimple.c vr-values.c (gimple_stmt_nonzero_p): Abstract common code to... 2018-07-11 15:30:51 +00:00
gimple.def
gimple.h vr-values.c (gimple_stmt_nonzero_p): Abstract common code to... 2018-07-11 15:30:51 +00:00
gimplify-me.c
gimplify-me.h
gimplify.c re PR middle-end/86539 (OpenMP wrong-code with taskloop and references) 2018-07-17 10:06:25 +02:00
gimplify.h gimplify.h (generic_expr_could_trap_p): Set as global function. 2018-07-06 22:10:20 +00:00
glimits.h
godump.c
graph.c
graph.h
graphds.c
graphds.h
graphite-dependences.c
graphite-isl-ast-to-gimple.c Introduce dump_location_t 2018-06-26 13:34:59 +00:00
graphite-optimize-isl.c Introduce dump_location_t 2018-06-26 13:34:59 +00:00
graphite-poly.c Convert dump and optgroup flags to enums 2018-06-08 12:50:19 +00:00
graphite-scop-detection.c re PR tree-optimization/85935 ([graphite] ICE in extract_affine, at graphite-sese-to-poly.c:287) 2018-06-07 07:01:56 +00:00
graphite-sese-to-poly.c graphite-sese-to-poly.c (extract_affine): Avoid unneded wrapping. 2018-06-07 09:48:31 +00:00
graphite.c Introduce dump_location_t 2018-06-26 13:34:59 +00:00
graphite.h re PR tree-optimization/86724 (Compilation error with new isl 0.20 (missing includes)) 2018-08-01 07:21:08 +00:00
gsstruct.def
gstab.h
gsyms.h
gsyslimits.h
gtm-builtins.def
haifa-sched.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
hard-reg-set.h
hash-map-tests.c
hash-map-traits.h
hash-map.h hash-map.h (hash_map::iterator::operator*): Return references to key and value. 2018-07-10 13:02:34 +00:00
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 Rename get methods in symbol-summary.h to get_create. 2018-06-08 12:11:48 +00:00
hsa-common.h Add {symbol,call}_summary::get method and use it in HSA. 2018-06-08 12:13:20 +00:00
hsa-dump.c 2018-07-23 Bernd Edlinger <bernd.edlinger@hotmail.de> 2018-07-23 12:48:48 +00:00
hsa-gen.c Add {symbol,call}_summary::get method and use it in HSA. 2018-06-08 12:13:20 +00:00
hsa-regalloc.c
hw-doloop.c
hw-doloop.h
hwint.c Fix ceil_log2(0) (PR 86644) 2018-07-25 08:41:35 +00:00
hwint.h Resync inline implementation of ceil_log2 (PR 86506) 2018-07-30 11:23:26 +00:00
ifcvt.c
ifcvt.h
inchash.c
inchash.h
incpath.c
incpath.h
init-regs.c
input.c
input.h
insn-addr.h
insn-notes.def
int-vector-builder.h
internal-fn.c Handle SLP of call pattern statements 2018-08-03 12:56:55 +00:00
internal-fn.def Add IFN_COND_FMA functions 2018-07-12 13:01:33 +00:00
internal-fn.h Handle SLP of call pattern statements 2018-08-03 12:56:55 +00:00
intl.c
intl.h
ipa-comdats.c
ipa-cp.c Fix IPA crash in libgccjit 2018-06-21 13:44:38 +00:00
ipa-devirt.c Introduce dump_location_t 2018-06-26 13:34:59 +00:00
ipa-fnsummary.c Clean-up usage of ipa_fn_summary and ipa_call_summary summaries. 2018-06-19 14:31:20 +00:00
ipa-fnsummary.h Clean-up usage of ipa_fn_summary and ipa_call_summary summaries. 2018-06-19 14:31:20 +00:00
ipa-hsa.c Add {symbol,call}_summary::get method and use it in HSA. 2018-06-08 12:13:20 +00:00
ipa-icf-gimple.c Remove MPX 2018-06-08 07:53:31 +00:00
ipa-icf-gimple.h
ipa-icf.c [multiple changes] 2018-07-04 07:51:08 +00:00
ipa-icf.h
ipa-inline-analysis.c Clean-up usage of ipa_fn_summary and ipa_call_summary summaries. 2018-06-19 14:31:20 +00:00
ipa-inline-transform.c Clean-up usage of ipa_fn_summary and ipa_call_summary summaries. 2018-06-19 14:31:20 +00:00
ipa-inline.c Revert one ipa_call_summaries::get to get_create (PR ipa/86323). 2018-07-02 07:04:01 +00:00
ipa-inline.h Replace some ::get_create with ::get in IPA inline. 2018-06-08 12:37:03 +00:00
ipa-param-manipulation.c
ipa-param-manipulation.h
ipa-polymorphic-call.c
ipa-predicate.c
ipa-predicate.h
ipa-profile.c Clean-up usage of ipa_fn_summary and ipa_call_summary summaries. 2018-06-19 14:31:20 +00:00
ipa-prop.c Introduce dump_location_t 2018-06-26 13:34:59 +00:00
ipa-prop.h Convert IPA CP to symbol_summary. 2018-06-08 12:22:58 +00:00
ipa-pure-const.c Revert one more symbol_summary::get to ::get_create (PR ipa/86529). 2018-07-16 13:33:23 +00:00
ipa-ref.c
ipa-ref.h Remove MPX 2018-06-08 07:53:31 +00:00
ipa-reference.c Fix IPA crash in libgccjit 2018-06-21 13:44:38 +00:00
ipa-reference.h
ipa-split.c Clean-up usage of ipa_fn_summary and ipa_call_summary summaries. 2018-06-19 14:31:20 +00:00
ipa-utils.c Come up with cgraph_node::get_uid and make cgraph_node::uid private. 2018-06-08 12:36:26 +00:00
ipa-utils.h
ipa-visibility.c Remove MPX 2018-06-08 07:53:31 +00:00
ipa.c Introduce dump_location_t 2018-06-26 13:34:59 +00:00
ira-build.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
ira-color.c
ira-conflicts.c
ira-costs.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
ira-emit.c
ira-int.h
ira-lives.c
ira.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
ira.h
is-a.h
json.cc Fix segfault in -fsave-optimization-record (PR tree-optimization/86636) 2018-07-24 16:06:58 +00:00
json.h Fix segfault in -fsave-optimization-record (PR tree-optimization/86636) 2018-07-24 16:06:58 +00:00
jump.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
langhooks-def.h PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
langhooks.c Fix memory leak of pretty_printer prefixes 2018-08-02 20:07:28 +00:00
langhooks.h PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
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 Introduce dump_location_t 2018-06-26 13:34:59 +00:00
loop-unroll.h
lower-subreg.c re PR target/85945 (ICE in resolve_subreg_use, at lower-subreg.c:751) 2018-06-14 15:35:06 +02:00
lower-subreg.h
lra-assigns.c
lra-coalesce.c
lra-constraints.c nds32.c (nds32_hard_regno_mode_ok): Replace > with >=. 2018-08-02 16:39:59 -06:00
lra-eliminations.c lra support for clobber_high 2018-08-06 09:51:01 +00:00
lra-int.h lra support for clobber_high 2018-08-06 09:51:01 +00:00
lra-lives.c lra support for clobber_high 2018-08-06 09:51:01 +00:00
lra-remat.c nds32.c (nds32_hard_regno_mode_ok): Replace > with >=. 2018-08-02 16:39:59 -06:00
lra-spills.c
lra.c lra support for clobber_high 2018-08-06 09:51:01 +00:00
lra.h
lto-cgraph.c Come up with cgraph_node::get_uid and make cgraph_node::uid private. 2018-06-08 12:36:26 +00:00
lto-compress.c
lto-compress.h
lto-opts.c
lto-section-in.c
lto-section-names.h
lto-section-out.c lto-section-out.c (lto_begin_section): Do not print section name for noaddr and unnumbered dumps. 2018-06-25 12:29:45 +00:00
lto-streamer-in.c Save discriminator info for LTO 2018-07-31 21:19:25 +00:00
lto-streamer-out.c Save discriminator info for LTO 2018-07-31 21:19:25 +00:00
lto-streamer.c cgraph.c (cgraph_node::get_untransformed_body): Dump function bodies streamed in with -Q. 2018-06-13 12:52:29 +00:00
lto-streamer.h [multiple changes] 2018-07-04 07:51:08 +00:00
lto-wrapper.c Add linker_output as prefix for LTO temps (PR lto/86548). 2018-07-26 12:13:14 +00:00
machmode.def
machmode.h
main.c
Makefile.in Makefile.in (wide-int-range.o): New. 2018-08-03 11:31:22 +00:00
match.pd Fold pointer range checks with equal spans 2018-08-01 15:46:12 +00:00
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
omp-builtins.def
omp-expand.c
omp-expand.h
omp-general.c
omp-general.h
omp-grid.c Introduce dump_location_t 2018-06-26 13:34:59 +00:00
omp-grid.h
omp-low.c re PR middle-end/86660 (libgomp.c++/for-15.C ICEs with nvptx offloading) 2018-07-26 18:12:02 +02:00
omp-low.h
omp-offload.c
omp-offload.h
omp-simd-clone.c
omp-simd-clone.h
ONEWS
opt-functions.awk PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
opt-gather.awk
opt-include.awk
opt-read.awk
opt-suggestions.c Come up with new --completion option. 2018-06-28 07:11:16 +00:00
opt-suggestions.h Come up with new --completion option. 2018-06-28 07:11:16 +00:00
optabs-libfuncs.c
optabs-libfuncs.h
optabs-query.c
optabs-query.h
optabs-tree.c re PR tree-optimization/64946 ([AArch64] gcc.target/aarch64/vect-abs-compile.c - "abs" vectorization fails for char/short types) 2018-06-16 21:34:29 +00:00
optabs-tree.h
optabs.c
optabs.def Add IFN_COND_FMA functions 2018-07-12 13:01:33 +00:00
optabs.h
optc-gen.awk PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
optc-save-gen.awk PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
opth-gen.awk PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
optinfo-emit-json.cc dumpfile.c: eliminate special-casing of dump_file/alt_dump_file 2018-07-31 19:22:48 +00:00
optinfo-emit-json.h Add "-fsave-optimization-record" 2018-07-20 15:37:23 +00:00
optinfo.cc dumpfile.c: eliminate special-casing of dump_file/alt_dump_file 2018-07-31 19:22:48 +00:00
optinfo.h dumpfile.c: eliminate special-casing of dump_file/alt_dump_file 2018-07-31 19:22:48 +00:00
opts-common.c PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
opts-diagnostic.h
opts-global.c
opts.c PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
opts.h PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
output.h Clean up of new format of -falign-FOO. 2018-07-17 09:19:27 +00:00
params-enum.h
params-list.h
params-options.h
params.c
params.def Explain asan parameters in params.def (PR sanitizer/79635). 2018-07-25 08:02:53 +00:00
params.h
pass_manager.h
passes.c cgraph.c (cgraph_node::get_untransformed_body): Dump function bodies streamed in with -Q. 2018-06-13 12:52:29 +00:00
passes.def Remove MPX 2018-06-08 07:53:31 +00:00
plugin.c
plugin.def
plugin.h
poly-int-types.h
poly-int.h tree-vrp.c (vrp_int_const_binop): Change overflow type to overflow_type. 2018-07-07 08:49:04 +00:00
postreload-gcse.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
postreload.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
predict.c Add malloc predictor (PR middle-end/83023). 2018-08-07 11:59:13 +00:00
predict.def Add malloc predictor (PR middle-end/83023). 2018-08-07 11:59:13 +00:00
predict.h
prefix.c
prefix.h
pretty-print.c Fix memory leak of pretty_printer prefixes 2018-08-02 20:07:28 +00:00
pretty-print.h Fix memory leak of pretty_printer prefixes 2018-08-02 20:07:28 +00:00
print-rtl-function.c
print-rtl.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
print-rtl.h
print-tree.c print-tree.c (print_real_cst): New function. 2018-07-03 20:14:16 -06:00
print-tree.h
profile-count.c Add "-fsave-optimization-record" 2018-07-20 15:37:23 +00:00
profile-count.h Add "-fsave-optimization-record" 2018-07-20 15:37:23 +00:00
profile.c GCOV: add cache for streamed locations. 2018-07-31 10:34:36 +00:00
profile.h
read-md.c [gen/AArch64] Generate helpers for substituting iterator values into pattern names 2018-08-02 10:59:35 +00:00
read-md.h [gen/AArch64] Generate helpers for substituting iterator values into pattern names 2018-08-02 10:59:35 +00:00
read-rtl-function.c
read-rtl-function.h
read-rtl.c [gen/AArch64] Generate helpers for substituting iterator values into pattern names 2018-08-02 10:59:35 +00:00
README.Portability
real.c re PR c/86420 (nextafter(0x1p-1022,0) is constant folded) 2018-07-09 12:56:47 +02:00
real.h
realmpfr.c
realmpfr.h
recog.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
recog.h
ree.c
reg-notes.def
reg-stack.c
regcprop.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
regcprop.h
reginfo.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
regrename.c
regrename.h
regs.h
regset.h
regstat.c
reload1.c reload1.c (forget_old_reloads_1): Adjust CLOBBER_HIGH assert. 2018-08-06 07:49:10 -06:00
reload.c
reload.h
reorg.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
resource.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
resource.h
rtl-error.c
rtl-error.h
rtl-iter.h
rtl-tests.c
rtl.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
rtl.def Add CLOBBER_HIGH expression 2018-08-06 09:07:57 +00:00
rtl.h Add func to check if register is clobbered by clobber_high 2018-08-06 09:38:29 +00:00
rtlanal.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
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
sanopt.c
sbitmap.c
sbitmap.h
sched-deps.c Remaining support for clobber high 2018-08-06 09:57:03 +00:00
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 Add "-fsave-optimization-record" 2018-07-20 15:37:23 +00:00
selftest.c selftest: introduce class auto_fix_quotes 2018-07-02 20:05:21 +00:00
selftest.h Add "-fsave-optimization-record" 2018-07-20 15:37:23 +00:00
sese.c
sese.h
shrink-wrap.c
shrink-wrap.h
signop.h
simplify-rtx.c tree-vrp.c (vrp_int_const_binop): Change overflow type to overflow_type. 2018-07-07 08:49:04 +00:00
sort.cc gcc_qsort: avoid overlapping memcpy (PR 86311) 2018-06-25 20:44:15 +03:00
sparseset.c
sparseset.h
spellcheck-tree.c spellcheck: support transpositions aka Damerau-Levenshtein (PR other/69968) 2018-06-12 18:28:37 +00:00
spellcheck-tree.h spellcheck: support transpositions aka Damerau-Levenshtein (PR other/69968) 2018-06-12 18:28:37 +00:00
spellcheck.c spellcheck: support transpositions aka Damerau-Levenshtein (PR other/69968) 2018-06-12 18:28:37 +00:00
spellcheck.h spellcheck: support transpositions aka Damerau-Levenshtein (PR other/69968) 2018-06-12 18:28:37 +00:00
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 PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
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 Make symbol_summary::get and call_summary::get pure. 2018-06-22 08:56:18 +00:00
symtab.c Remove MPX 2018-06-08 07:53:31 +00:00
sync-builtins.def
system.h Clean up of new format of -falign-FOO. 2018-07-17 09:19:27 +00:00
target-def.h
target-globals.c
target-globals.h
target-hooks-macros.h
target-insns.def Revert "[ARM] Fix PR85434: spilling of stack protector guard's address on ARM" 2018-08-02 11:16:05 +00:00
target.def targhooks - provide an alternative hook for targets that never execute speculatively 2018-07-31 17:36:36 +00:00
target.h
targhooks.c targhooks.c (default_have_speculation_safe_value): Add ATTRIBUTE_UNUSED. 2018-07-31 20:51:06 +00:00
targhooks.h targhooks - provide an alternative hook for targets that never execute speculatively 2018-07-31 17:36:36 +00:00
timevar.c
timevar.def
timevar.h
tlink.c
toplev.c PR middle-end/82063 - issues with arguments enabled by -Wall 2018-07-20 14:51:20 -06:00
toplev.h [multiple changes] 2018-07-04 07:51:08 +00:00
tracer.c
tracer.h
trans-mem.c
trans-mem.h
tree-affine.c
tree-affine.h
tree-call-cdce.c
tree-cfg.c tree-cfg.c (verify_gimple_in_cfg): Call verify_location on the goto_locus of each outgoing edge of each basic block. 2018-06-28 14:49:15 +00:00
tree-cfg.h Fix function signature in header file. 2018-06-08 13:44:06 +00:00
tree-cfgcleanup.c tree-cfgcleanup.c (tree_forwarder_block_p): Do not return false at -O0 if the locus represent UNKNOWN_LOCATION but have... 2018-06-19 21:31:44 +00:00
tree-cfgcleanup.h
tree-chrec.c tree-vrp.c (vrp_int_const_binop): Change overflow type to overflow_type. 2018-07-07 08:49:04 +00:00
tree-chrec.h
tree-complex.c
tree-core.h Update OpenACC data clause semantics to the 2.5 behavior 2018-06-20 09:35:15 -07:00
tree-data-ref.c tree-vrp.c (vrp_int_const_binop): Change overflow type to overflow_type. 2018-07-07 08:49:04 +00:00
tree-data-ref.h
tree-dfa.c Fix sigsegv on -fdump-tree-all-enumerate_locals 2018-07-07 11:08:27 +00:00
tree-dfa.h
tree-diagnostic.c PR tree-optimization/86650 - -Warray-bounds missing inlining context 2018-08-01 17:39:35 -06:00
tree-diagnostic.h
tree-dump.c
tree-dump.h
tree-eh.c re PR tree-optimization/64946 ([AArch64] gcc.target/aarch64/vect-abs-compile.c - "abs" vectorization fails for char/short types) 2018-06-16 21:34:29 +00:00
tree-eh.h
tree-emutls.c
tree-hash-traits.h
tree-hasher.h
tree-if-conv.c Use conditional internal functions in if-conversion 2018-07-12 13:02:00 +00:00
tree-if-conv.h
tree-inline.c [debug] Reuse debug exprs generated in remap_ssa_name 2018-07-13 10:08:37 +00:00
tree-inline.h tree-inline.c (remap_gimple_stmt): Force input_location on the new statement if id->reset_location is true. 2018-06-28 06:21:13 +00:00
tree-into-ssa.c
tree-into-ssa.h
tree-iterator.c
tree-iterator.h
tree-loop-distribution.c Introduce dump_location_t 2018-06-26 13:34:59 +00:00
tree-nested.c Hide alt_dump_file within dumpfile.c 2018-06-28 14:55:42 +00:00
tree-nested.h
tree-nrv.c
tree-object-size.c
tree-object-size.h
tree-outof-ssa.c
tree-outof-ssa.h
tree-parloops.c [44/46] Remove global vinfo_for_stmt-related routines 2018-07-31 14:26:31 +00:00
tree-parloops.h
tree-pass.h Convert dump and optgroup flags to enums 2018-06-08 12:50:19 +00:00
tree-phinodes.c
tree-phinodes.h
tree-predcom.c
tree-pretty-print.c PR tree-optimization/86650 - -Warray-bounds missing inlining context 2018-08-01 17:39:35 -06:00
tree-pretty-print.h PR tree-optimization/86650 - -Warray-bounds missing inlining context 2018-08-01 17:39:35 -06:00
tree-profile.c
tree-scalar-evolution.c tree-vrp.c (vrp_int_const_binop): Change overflow type to overflow_type. 2018-07-07 08:49:04 +00:00
tree-scalar-evolution.h
tree-sra.c Clean-up usage of ipa_fn_summary and ipa_call_summary summaries. 2018-06-19 14:31:20 +00:00
tree-ssa-address.c
tree-ssa-address.h
tree-ssa-alias.c
tree-ssa-alias.h
tree-ssa-ccp.c PR tree-optimization/86650 - -Warray-bounds missing inlining context 2018-08-01 17:39:35 -06:00
tree-ssa-ccp.h
tree-ssa-coalesce.c
tree-ssa-coalesce.h
tree-ssa-copy.c
tree-ssa-dce.c Remove MPX 2018-06-08 07:53:31 +00:00
tree-ssa-dce.h
tree-ssa-dom.c tree-ssa-dom.c (dom_opt_dom_walker::optimize_stmt): Pass down the vr_values instance to cprop_into_stmt. 2018-08-06 14:13:20 -06:00
tree-ssa-dom.h
tree-ssa-dse.c re PR tree-optimization/86010 (redundant memset with smaller size not eliminated) 2018-07-17 17:54:10 -06:00
tree-ssa-forwprop.c tree-ssa-forwprop.c (simplify_builtin_call): Don't create a not NUL terminated string literal. 2018-07-30 13:26:25 +00:00
tree-ssa-ifcombine.c
tree-ssa-live.c Add "-fsave-optimization-record" 2018-07-20 15:37:23 +00:00
tree-ssa-live.h
tree-ssa-loop-ch.c
tree-ssa-loop-im.c
tree-ssa-loop-ivcanon.c tree-ssa-loop-ivcanon.c (tree_unroll_loops_completely_1): Rework father_bb setting in a way to avoid propagating constants multiple times... 2018-07-11 07:04:59 +00:00
tree-ssa-loop-ivopts.c Introduce dump_location_t 2018-06-26 13:34:59 +00:00
tree-ssa-loop-ivopts.h
tree-ssa-loop-manip.c Generate correctly typed compare in canonicalize_loop_ivs 2018-06-20 14:44:45 +00:00
tree-ssa-loop-manip.h
tree-ssa-loop-niter.c re PR tree-optimization/86489 (ICE in gimple_phi_arg starting with r261682 when building 531.deepsjeng_r with FDO + LTO) 2018-07-13 05:25:47 +00:00
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 Support fused multiply-adds in fully-masked reductions 2018-07-12 13:01:48 +00:00
tree-ssa-operands.c
tree-ssa-operands.h
tree-ssa-phionlycprop.c
tree-ssa-phiopt.c re PR tree-optimization/86544 (Popcount detection generates different code on C and C++) 2018-07-18 22:11:24 +00:00
tree-ssa-phiprop.c
tree-ssa-pre.c Remove MPX 2018-06-08 07:53:31 +00:00
tree-ssa-propagate.c
tree-ssa-propagate.h
tree-ssa-reassoc.c re PR tree-optimization/86514 (wrong manipulation of 2-dimensional packed array at -O) 2018-07-16 08:59:09 +00:00
tree-ssa-sccvn.c tree-ssa-sccvn.c (visit_phi): Compare invariant addresses as base and offset. 2018-08-01 12:03:29 +00:00
tree-ssa-sccvn.h tree-ssa-sccvn.h (struct vn_nary_op_s): Add next member. 2018-07-20 07:18:35 +00:00
tree-ssa-scopedtables.c
tree-ssa-scopedtables.h
tree-ssa-sink.c
tree-ssa-strlen.c PR tree-optimization/86650 - -Warray-bounds missing inlining context 2018-08-01 17:39:35 -06:00
tree-ssa-strlen.h PR middle-end/85602 - -Wsizeof-pointer-memaccess for strncat with size of source 2018-06-18 16:17:57 -06:00
tree-ssa-structalias.c re PR ipa/86389 (execute FAILs with -fipa-pta) 2018-07-03 13:56:58 +00:00
tree-ssa-tail-merge.c re PR tree-optimization/86816 (ICE: SIGSEGV in tree-ssa-pre / tail_merge_optimize) 2018-08-02 13:19:50 +00:00
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.c (thread_through_all_blocks): Do not jump thread twice from the same starting edge. 2018-07-11 16:25:58 +00:00
tree-ssa-threadupdate.h
tree-ssa-uncprop.c
tree-ssa-uninit.c
tree-ssa.c
tree-ssa.h
tree-ssanames.c
tree-ssanames.h
tree-stdarg.c Remove MPX 2018-06-08 07:53:31 +00:00
tree-stdarg.h
tree-streamer-in.c lto-streamer-out.c (DFS::DFS_write_tree_body): Do not stream DECL_FCONTEXT 2018-07-12 12:56:45 +00:00
tree-streamer-out.c lto-streamer-out.c (DFS::DFS_write_tree_body): Do not stream DECL_FCONTEXT 2018-07-12 12:56:45 +00:00
tree-streamer.c Remove MPX 2018-06-08 07:53:31 +00:00
tree-streamer.h
tree-switch-conversion.c Fix bootstrap on ia64 with old GCC version. 2018-07-04 07:53:05 +00:00
tree-switch-conversion.h Come up with jump_table ratio constants used in jump_table_cluster. 2018-06-28 07:15:55 +00:00
tree-tailcall.c
tree-vect-data-refs.c [06/11] Handle VMAT_INVARIANT separately 2018-08-01 15:14:48 +00:00
tree-vect-generic.c re PR target/86139 (ICE in in store_constructor, at expr.c:6849 on arm-linux-gnueabihf) 2018-06-14 10:55:31 +00:00
tree-vect-loop-manip.c [41/46] Add vec_info::remove_stmt 2018-07-31 14:26:18 +00:00
tree-vect-loop.c [07/11] Use single basic block array in loop_vec_info 2018-08-01 15:14:56 +00:00
tree-vect-patterns.c Fix over-widening handling of COND_EXPRs (PR 86749) 2018-08-01 14:40:35 +00:00
tree-vect-slp.c Handle SLP of call pattern statements 2018-08-03 12:56:55 +00:00
tree-vect-stmts.c Fix remove_stmt in vectorizable_simd_clone_call (PR 86758) 2018-08-01 15:29:36 +00:00
tree-vector-builder.c
tree-vector-builder.h
tree-vectorizer.c [46/46] Turn stmt_vec_info back into a typedef 2018-07-31 14:26:40 +00:00
tree-vectorizer.h [06/11] Handle VMAT_INVARIANT separately 2018-08-01 15:14:48 +00:00
tree-vrp.c Makefile.in (wide-int-range.o): New. 2018-08-03 11:31:22 +00:00
tree-vrp.h Makefile.in (wide-int-range.o): New. 2018-08-03 11:31:22 +00:00
tree.c re PR target/86662 (msp430-elf segfault with -flto and -mlarge) 2018-08-06 10:29:17 +00:00
tree.def re PR tree-optimization/64946 ([AArch64] gcc.target/aarch64/vect-abs-compile.c - "abs" vectorization fails for char/short types) 2018-06-16 21:34:29 +00:00
tree.h PR tree-optimization/86043 - strlen after memcpy partially overwriting a string not optimized 2018-07-26 10:45:43 -06:00
treestruct.def
tsan.c
tsan.h
tsystem.h
typeclass.h
typed-splay-tree.c typed-splay-tree.h (typed_splay_tree::remove): New function. 2018-06-15 19:17:19 +00:00
typed-splay-tree.h typed-splay-tree.h (typed_splay_tree::remove): New function. 2018-06-15 19:17:19 +00:00
ubsan.c
ubsan.h
unique-ptr-tests.cc
valtrack.c
valtrack.h
value-prof.c Improve dumping of value profiling transformations. 2018-08-01 10:50:48 +00:00
value-prof.h
var-tracking.c [debug] Fix pre_dec handling in vartrack 2018-07-16 09:18:51 +00:00
varasm.c Clean up of new format of -falign-FOO. 2018-07-17 09:19:27 +00:00
varasm.h
varpool.c cgraph.c (cgraph_node::get_untransformed_body): Dump function bodies streamed in with -Q. 2018-06-13 12:52:29 +00:00
vec-perm-indices.c
vec-perm-indices.h
vec.c
vec.h Introduce auto_string_vec class. 2018-06-28 07:07:40 +00:00
vector-builder.h
version.c
version.h
vmsdbg.h
vmsdbgout.c
vr-values.c tree-vrp (zero_nonzero_bits_from_bounds): Rename to... 2018-08-01 15:03:01 +00:00
vr-values.h
vtable-verify.c
vtable-verify.h
web.c
wide-int-bitmask.h
wide-int-print.cc
wide-int-print.h
wide-int-range.cc Makefile.in (wide-int-range.o): New. 2018-08-03 11:31:22 +00:00
wide-int-range.h Makefile.in (wide-int-range.o): New. 2018-08-03 11:31:22 +00:00
wide-int.cc tree-vrp.c (vrp_int_const_binop): Change overflow type to overflow_type. 2018-07-07 08:49:04 +00:00
wide-int.h wide-int.h (widest2_int): New. 2018-07-19 09:12:32 +00:00
xcoff.h
xcoffout.c
xcoffout.h

Copyright (C) 2000-2018 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.