initial merge of GCC 12.3.0.

this doesn't include any of the changes to the .c -> .cc files renamed,
and reverts our local changes to the vax port and libsanitizer subdir.
vax GCC was rewritten and our local fixes no longer are relevant, and
the new libsanitizer is more updated than our old one, and merging via
gcc10->gcc12 is not really possible.

unfortunately, our local changes to libsanitizer that aren't related
to the general update of those sources (ie, the netbsd code) will need
to be re-checked and perhaps re-ported.

merge GCC 10.5.0.

branches: 1.17.2;
merge GCC 10.4.0.

initial merge of GCC 10.3.0.

these three files are not yet finished merging:

gcc/config/rs6000/rs6000.c
libsanitizer/lsan/lsan_allocator.h
libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h

our current GCC 9 sanitizers are newer than GCC 10's still, so that
may take a little to untease, so it's probable that more than
these 2 will need more changes.

rs6000.c has some changes related to ABI and supported functionality
that need to be merged forward.

merge GCC 9.3.0.

regen for GCC 8.4.0.

merge GCC 8.4.0.

regen for GCC 8.3 and our changes.

branches: 1.11.2;
regen these for <GCC 7.4.0.

regen after GCC 6.5.

merge GCC 6.5. needs mknative as some new files appeared.

branches: 1.8.2; 1.8.4;
updates to make it at least build in tools/gcc:

- fix -fdelete-null-pointer-checks default (needs more inspection)
- revert unnecessary local changes in gcc.h, system.h and freebsd-spec.h
- fix local changes to invoke.texi
- update man and info pages
- fix a typo in unwind-seh.c

remove old generated versions of man pages.
update the dist versions of man and info pages to include local changes.

merge GCC 5.4.0. (needs mknative, may not build yet.)

merge GCC 5.3. round 1. this probably won't work :-)

libsanitizer likely needs to be re-ported, though i've done most of
the updating we'll need i think already.

merge GCC 4.8.5 (final round)

branches: 1.3.2;
Resolve conflicts

branches: 1.2.2;
merge gcc 4.8.2 r206687 (part 1).

branches: 1.1.1;
Initial revision

merge GCC 10.5.0.

merge GCC 10.4.0.

initial merge of GCC 10.3.0.

these three files are not yet finished merging:

gcc/config/rs6000/rs6000.c
libsanitizer/lsan/lsan_allocator.h
libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h

our current GCC 9 sanitizers are newer than GCC 10's still, so that
may take a little to untease, so it's probable that more than
these 2 will need more changes.

rs6000.c has some changes related to ABI and supported functionality
that need to be merged forward.

merge GCC 9.3.0.

regen for GCC 8.4.0.

merge GCC 8.4.0.

regen for GCC 8.3 and our changes.

branches: 1.11.2;
regen these for <GCC 7.4.0.

regen after GCC 6.5.

merge GCC 6.5. needs mknative as some new files appeared.

branches: 1.8.2; 1.8.4;
updates to make it at least build in tools/gcc:

- fix -fdelete-null-pointer-checks default (needs more inspection)
- revert unnecessary local changes in gcc.h, system.h and freebsd-spec.h
- fix local changes to invoke.texi
- update man and info pages
- fix a typo in unwind-seh.c

remove old generated versions of man pages.
update the dist versions of man and info pages to include local changes.

merge GCC 5.4.0. (needs mknative, may not build yet.)

merge GCC 5.3. round 1. this probably won't work :-)

libsanitizer likely needs to be re-ported, though i've done most of
the updating we'll need i think already.

merge GCC 4.8.5 (final round)

branches: 1.3.2;
Resolve conflicts

branches: 1.2.2;
merge gcc 4.8.2 r206687 (part 1).

branches: 1.1.1;
Initial revision

merge GCC 10.4.0.

initial merge of GCC 10.3.0.

these three files are not yet finished merging:

gcc/config/rs6000/rs6000.c
libsanitizer/lsan/lsan_allocator.h
libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h

our current GCC 9 sanitizers are newer than GCC 10's still, so that
may take a little to untease, so it's probable that more than
these 2 will need more changes.

rs6000.c has some changes related to ABI and supported functionality
that need to be merged forward.

merge GCC 9.3.0.

regen for GCC 8.4.0.

merge GCC 8.4.0.

regen for GCC 8.3 and our changes.

branches: 1.11.2;
regen these for <GCC 7.4.0.

regen after GCC 6.5.

merge GCC 6.5. needs mknative as some new files appeared.

branches: 1.8.2; 1.8.4;
updates to make it at least build in tools/gcc:

- fix -fdelete-null-pointer-checks default (needs more inspection)
- revert unnecessary local changes in gcc.h, system.h and freebsd-spec.h
- fix local changes to invoke.texi
- update man and info pages
- fix a typo in unwind-seh.c

remove old generated versions of man pages.
update the dist versions of man and info pages to include local changes.

merge GCC 5.4.0. (needs mknative, may not build yet.)

merge GCC 5.3. round 1. this probably won't work :-)

libsanitizer likely needs to be re-ported, though i've done most of
the updating we'll need i think already.

merge GCC 4.8.5 (final round)

branches: 1.3.2;
Resolve conflicts

branches: 1.2.2;
merge gcc 4.8.2 r206687 (part 1).

branches: 1.1.1;
Initial revision

initial merge of GCC 10.3.0.

these three files are not yet finished merging:

gcc/config/rs6000/rs6000.c
libsanitizer/lsan/lsan_allocator.h
libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h

our current GCC 9 sanitizers are newer than GCC 10's still, so that
may take a little to untease, so it's probable that more than
these 2 will need more changes.

rs6000.c has some changes related to ABI and supported functionality
that need to be merged forward.

merge GCC 9.3.0.

regen for GCC 8.4.0.

merge GCC 8.4.0.

regen for GCC 8.3 and our changes.

branches: 1.11.2;
regen these for <GCC 7.4.0.

regen after GCC 6.5.

merge GCC 6.5. needs mknative as some new files appeared.

branches: 1.8.2; 1.8.4;
updates to make it at least build in tools/gcc:

- fix -fdelete-null-pointer-checks default (needs more inspection)
- revert unnecessary local changes in gcc.h, system.h and freebsd-spec.h
- fix local changes to invoke.texi
- update man and info pages
- fix a typo in unwind-seh.c

remove old generated versions of man pages.
update the dist versions of man and info pages to include local changes.

merge GCC 5.4.0. (needs mknative, may not build yet.)

merge GCC 5.3. round 1. this probably won't work :-)

libsanitizer likely needs to be re-ported, though i've done most of
the updating we'll need i think already.

merge GCC 4.8.5 (final round)

branches: 1.3.2;
Resolve conflicts

branches: 1.2.2;
merge gcc 4.8.2 r206687 (part 1).

branches: 1.1.1;
Initial revision

merge GCC 9.3.0.

regen for GCC 8.4.0.

merge GCC 8.4.0.

regen for GCC 8.3 and our changes.

branches: 1.11.2;
regen these for <GCC 7.4.0.

regen after GCC 6.5.

merge GCC 6.5. needs mknative as some new files appeared.

branches: 1.8.2; 1.8.4;
updates to make it at least build in tools/gcc:

- fix -fdelete-null-pointer-checks default (needs more inspection)
- revert unnecessary local changes in gcc.h, system.h and freebsd-spec.h
- fix local changes to invoke.texi
- update man and info pages
- fix a typo in unwind-seh.c

remove old generated versions of man pages.
update the dist versions of man and info pages to include local changes.

merge GCC 5.4.0. (needs mknative, may not build yet.)

merge GCC 5.3. round 1. this probably won't work :-)

libsanitizer likely needs to be re-ported, though i've done most of
the updating we'll need i think already.

merge GCC 4.8.5 (final round)

branches: 1.3.2;
Resolve conflicts

branches: 1.2.2;
merge gcc 4.8.2 r206687 (part 1).

branches: 1.1.1;
Initial revision

regen for GCC 8.4.0.

merge GCC 8.4.0.

regen for GCC 8.3 and our changes.

regen these for <GCC 7.4.0.

regen after GCC 6.5.

merge GCC 6.5. needs mknative as some new files appeared.

branches: 1.8.2; 1.8.4;
updates to make it at least build in tools/gcc:

- fix -fdelete-null-pointer-checks default (needs more inspection)
- revert unnecessary local changes in gcc.h, system.h and freebsd-spec.h
- fix local changes to invoke.texi
- update man and info pages
- fix a typo in unwind-seh.c

remove old generated versions of man pages.
update the dist versions of man and info pages to include local changes.

merge GCC 5.4.0. (needs mknative, may not build yet.)

merge GCC 5.3. round 1. this probably won't work :-)

libsanitizer likely needs to be re-ported, though i've done most of
the updating we'll need i think already.

merge GCC 4.8.5 (final round)

branches: 1.3.2;
Resolve conflicts

branches: 1.2.2;
merge gcc 4.8.2 r206687 (part 1).

branches: 1.1.1;
Initial revision

regen for GCC 8.3 and our changes.

regen these for <GCC 7.4.0.

regen after GCC 6.5.

merge GCC 6.5. needs mknative as some new files appeared.

branches: 1.8.2; 1.8.4;
updates to make it at least build in tools/gcc:

- fix -fdelete-null-pointer-checks default (needs more inspection)
- revert unnecessary local changes in gcc.h, system.h and freebsd-spec.h
- fix local changes to invoke.texi
- update man and info pages
- fix a typo in unwind-seh.c

remove old generated versions of man pages.
update the dist versions of man and info pages to include local changes.

merge GCC 5.4.0. (needs mknative, may not build yet.)

merge GCC 5.3. round 1. this probably won't work :-)

libsanitizer likely needs to be re-ported, though i've done most of
the updating we'll need i think already.

merge GCC 4.8.5 (final round)

branches: 1.3.2;
Resolve conflicts

branches: 1.2.2;
merge gcc 4.8.2 r206687 (part 1).

branches: 1.1.1;
Initial revision

regen these for <GCC 7.4.0.

regen after GCC 6.5.

merge GCC 6.5. needs mknative as some new files appeared.

branches: 1.8.2;
updates to make it at least build in tools/gcc:

- fix -fdelete-null-pointer-checks default (needs more inspection)
- revert unnecessary local changes in gcc.h, system.h and freebsd-spec.h
- fix local changes to invoke.texi
- update man and info pages
- fix a typo in unwind-seh.c

remove old generated versions of man pages.
update the dist versions of man and info pages to include local changes.

merge GCC 5.4.0. (needs mknative, may not build yet.)

merge GCC 5.3. round 1. this probably won't work :-)

libsanitizer likely needs to be re-ported, though i've done most of
the updating we'll need i think already.

merge GCC 4.8.5 (final round)

branches: 1.3.2;
Resolve conflicts

branches: 1.2.2;
merge gcc 4.8.2 r206687 (part 1).

branches: 1.1.1;
Initial revision

updates to make it at least build in tools/gcc:

- fix -fdelete-null-pointer-checks default (needs more inspection)
- revert unnecessary local changes in gcc.h, system.h and freebsd-spec.h
- fix local changes to invoke.texi
- update man and info pages
- fix a typo in unwind-seh.c

remove old generated versions of man pages.
update the dist versions of man and info pages to include local changes.

merge GCC 5.4.0. (needs mknative, may not build yet.)

merge GCC 5.3. round 1. this probably won't work :-)

libsanitizer likely needs to be re-ported, though i've done most of
the updating we'll need i think already.

merge GCC 4.8.5 (final round)

branches: 1.3.2;
Resolve conflicts

branches: 1.2.2;
merge gcc 4.8.2 r206687 (part 1).

branches: 1.1.1;
Initial revision

remove old generated versions of man pages.
update the dist versions of man and info pages to include local changes.

merge GCC 5.4.0. (needs mknative, may not build yet.)

merge GCC 5.3. round 1. this probably won't work :-)

libsanitizer likely needs to be re-ported, though i've done most of
the updating we'll need i think already.

merge GCC 4.8.5 (final round)

branches: 1.3.2;
Resolve conflicts

branches: 1.2.2;
merge gcc 4.8.2 r206687 (part 1).

branches: 1.1.1;
Initial revision

merge GCC 4.8.5 (final round)

Resolve conflicts

branches: 1.2.2;
merge gcc 4.8.2 r206687 (part 1).

branches: 1.1.1;
Initial revision

initial import of GCC 4.8.5 sources. these GCC PRs (at least) are
fixed in this release:

64882 46102 58123 65409 59626 61058 65680 64487 65721 65727
52306 64768 56273 57653 59990 60656 61634 63844 64199 64493
64495 65549 57059 57569 57748 58369 62642 63608 64037 65550
65693 65220 45187 64409 61977 64513 64634 65368 66233 66470
65072 65327 65543 65279 63593 65063 65518 66123 66140 59016
64479 64557 64979 66215 66275 66481 39423 64766 63733 52714
60898 61138 63744 57023 39722 45402 52579 52664 60718 62044
59513 35330 37440 43701

see:
https://gcc.gnu.org/bugzilla/buglist.cgi?bug_status=RESOLVED&resolution=FIXED&target_milestone=4.8.5
for more details.

import GCC 4.8.4 release. this fixes at least these GCC PRs:
fortran/61407
sanitizer/64265
tree-optimization/64269
middle-end/64225
tree-optimization/61686
bootstrap/64213
rtl-optimization/64037
target/50751
rtl-optimization/64037
target/59593
target/59593
c++/56493
target/64115
middle-end/64111
middle-end/64067
rtl-optimization/63659
libgomp/61200
tree-optimization/61969
tree-optimization/62031
tree-optimization/63379
tree-optimization/63605
middle-end/63665
target/60111
target/63673
target/63947
tree-optimization/62167
tree-optimization/63841
ipa/63838
c++/63455
c++/63415
c++/56710
c++/58624
preprocessor/60436
target/55351
fortran/63938
libgomp/61200
libstdc++/63840
libstdc++/61947
libstdc++/59603
target/56846
libstdc++/57440

Import gcc 4.8.3 which has 98 bugs fixed on gcc-4-8-3-pre-r208254

Import of gcc 4.5.4. The (possibly incomplete) list of fixed bugs is

50617 [4.5/4.6/4.7 Regression] ICE: RTL flag check: INSN_ANNULLED_BRANCH_P used with unexpected rtx code 'simplify_immed_subreg' in output_bb, at config/pa/pa.c:6631
45383 [4.5 Regression] Implicit conversion to pointer does no longer automatically generate operator== and operator!=.
45606 [4.5 Regression] match a method prototyped a typedef alias with the original type (using stdlib)
47398 [4.5 Regression] tree check: accessed elt 10 of tree_vec with 9 elts in tsubst, at cp/pt.c:10500
49951 [4.5/4.6/4.7 Regression] Debug stepping behavior regarding g++ Class destructor has changed for the worse starting at gcc 4.5.0
43190 [4.4 Regression] Used pointer typedefs eliminated from debug info
43866 [4.4 Regression] wrong code with -fbounds-check -funswitch-loops
43897 [4.4 Regression] IA-64 asm clobbers are ignored
44777 [4.4 Regression] ICE: SIGSEGV with -fprofile-use in gcc.c-torture/execute/comp-goto-2.c
46985 [4.5 Regression] ICE: SIGSEGV in is_gimple_min_invariant (gimple.c:2742) with -fno-tree-ccp -fno-tree-dominator-opts -fno-tree-fre
47780 [4.5 Regression] -fcompare-debug failure with -O -fgcse -fgcse-las -fstack-protector-all
47858 [4.5/4.6/4.7 Regression] IPA-SRA decreases quality of debug info
47903 [4.5 Regression] var-tracking.c: valgrind error
48685 [4.5 Regression] ICE in gimplify_expr, at gimplify.c:7034
52139 [4.5 Regression] ICE: in remove_insn, at emit-rtl.c:3960 with -O -fPIC -fno-tree-dominator-opts -fno-tree-fre
48046 [4.5 Regression] Expected diagnostic "reference to 'type' is ambiguous" not given for function-local static declaration
51406 [4.5/4.6/4.7 Regression][c++0x] Incorrect result of static_cast to rvalue reference to base class.
43949 [4.4 Regression] bogus warning: array subscript is above array bounds
45982 [4.4 Regression] PTA does not track integers
48172 [4.5 Regression] incorrect vectorization of loop in GCC 4.5.* with -O3
49115 [4.5 Regression] invalid return value optimization (?) when exception is thrown and caught
49279 [4.5 Regression] Optimization incorrectly presuming constant variable inside loop in g++ 4.5 and 4.6 with -O2 and -O3 for x86_64 targets
50189 [4.5 Regression] Wrong code error in -O2 [-fstrict-enums] compile, target independent
48660 [4.5/4.6 Regression] ARM ICE in expand_expr_real_1
23656 Cross-compilation with newlib fails in libiberty
37985 [4.5/4.6/4.7/4.8 Regression] unsigned char shift lacks "statement with no effect" warning
38292 [4.5/4.6/4.7/4.8 Regression] corrupted profile info with -O[23] -fprofile-use
40778 [4.5 Regression] Mudflap instrumentation missing in cloned function.
40992 [4.4 Regression] cunroll ignoring asm size
48306 [4.4 Regression] presence of gcc subdir with . in PATH causes breakdown
49651 [4.4 Regression] nested lambdas and -O3 produced incorrect integer variable increments
52223 [4.5/4.6 Regression] libffi's man page install breaks with multilibs and overridden mandir
53418 [4.5 Regression] ICE at gimplify.c:7773
53138 [4.7 Regression] spaceship operator miscompiled
50091 [4.5/4.6/4.7 Regression] -fstack-check generates wrong assembly
50979 architecture mismatch: "mul32" not enabled for "smul" or "umul"
51187 miscompilation of genrecog.c at -O2 for --target=avr
52717 thunk referenced in discarded section when building samba with -flto
48742 [4.5 Regression] Internal error in gimplify_expr
49120 [4.5 Regression] bogus "value computed is not used" warning (variable-length array in compound statement)
49161 [4.5 Regression] Fix VRP on switch stmts
49619 [4.5 Regression] ICE in simplify_subreg, at simplify-rtx.c:5362
49621 [4.5 regression] ICE in trunc_int_for_mode, at explow.c:57
49644 [4.5 Regression] post-increment of promoted operand is incorrect.
51767 [4.5 Regression] ICE with degenerated asm goto
51768 [4.5 Regression] ICE with invalid asm goto
52736 [4.5/4.6/4.7/4.8 Regression] miscompilation: store to aliased __m128d is 8 Bytes off
49440 [4.6 regression] Invalid dynamic_cast for unnamed namespace
50565 [4.5/4.6/4.7 Regression] initializer element is not computable at load time
52294 [4.7 Regression] [ARM Thumb] generated asm code produces "branch out of range" error in gas with -Os -mcpu=cortex-a9
41159 [LTO] ICE in insert_value_copy_on_edge, at tree-outof-ssa.c:225
48822 [4.5 Regression] G++ gets stucks and never finishes compilation when enabling -O2/3 optimization options.
50162 [4.5 Regression] Wrong vectorization
49381 Unresolved symbols in libgcjgc.a when linking gctest
45786 [4.5 Regression] Relational operators .eq. and == are not recognized as equivalent
48708 Invalid V2DI vector set insn generated
50464 Using -Ofast -march=bdver1 results in internal compiler error: in extract_insn, at recog.c:2109
51821 [4.5/4.6/4.7 Regression] 64bit > 32bit conversion produces incorrect results with optimizations
52698 -maddress-mode=long doesn't work
53228 [4.6/4.7/4.8 Regression] target attributes in libcpp/lex.c cause illegal instructions to be used elsewhere
42082 [C++0x] ICE on probably invalid with "canonical types differ for identical types"
42652 vectorizer created unaligned vector insns
42856 [4.4 Regression] FAIL: gcc.dg/torture/pr41555.c -O0 (test for excess errors)
47733 psignal (int, const? char*) in libiberty/strsignal.h
48743 -march=native mis-detects AMD K6-2+ / K6-3 as Athlon - compiled C fails with "illegal instruction"
49038 [4.5/4.6/4.7 Regression] -ftree-vectorise introduces reads past end of array
49448 arm-tab-linux-gnu-eabi enableds big endian when it should not
49461 boehm-gc and gcj incompatible with pie
50875 O3 and -mavx lead to internal compiler error: in find_reloads
51161 [C++0x] Illegal static_cast to rvalue reference to ambiguous base class
51393 Wrong parameter type for _mm256_insert_epi64 in avxintrin.h
51444 [4.4 Regression]: Spurious "is used uninitialized" warning for structure with bitfields
51835 ARM EABI violation when passing arguments to helper floating functions like __aeabi_d2iz
52894 [4.5,4.6,4.7 Regression] Stage1 bootstrap fails with gcc-4.6.3: Infinite loop in pointer_set_insert
53310 [4.5/4.6/4.7/4.8 Regression] EOSHIFT leaks memory
53744 gcov version oscillates between 407* and 407p on branches
52335 [4.4/4.5/4.6/4.7 Regression] I/O: -std=f95 rejects valid DELIM= in OPEN
46192 [4.5/4.6/4.7 regression] wrong code for renaming of volatile packed array with address clause
44581 [4.5/4.6/4.7 Regression] internal compiler error: in simplify_subreg
49307 [4.5/4.6/4.7 Regression] ICE in spill_failure, at reload1.c:2113
50163 [4.4/4.5/4.6/4.7 Regression] ICE: initialization expression
50273 [4.5/4.6/4.7 Regression] -Walign-commons no longer effective
52022 [4.5/4.6/4.7 Regression] Wrong-code with procedures passed as actual argument
52452 [4.5/4.6/4.7/4.8 Regression] INTRINSIC cannot be applied to gfortran's ETIME
25973 [4.5/4.6/4.7/4.8 Regression] Wrong warning: control reaches end of non-void function
53521 [4.5/4.6/4.7/4.8 Regression] Memory leak with zero-sized array constructor

branches: 1.1.1.1.2; 1.1.1.1.8;
initial import of GCC 4.5.3 sources. changes since 4.1 are way too numerous
to review, please see http://gcc.gnu.org/gcc-4.5/changes.html (and the 4.2,
4.3 and 4.4 versions, too.)

this includes the core, c++, objc and the non java/ada/fortran parts of the
testsuite.

Rebase to HEAD as of a few days ago.

Resync to 2012-11-19 00:00:00 UTC

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")

sync with head

Rebase.