The GCC4.3 branch contains some optimization fixes
that were not considered regressions and therefore
were never backported. We are bringing a couple of
them that are under GPLv2 since they were made
before the license switch upstream.
While here, add the GCC revision numbers in the
log.
Discussed with: jkim
MFC after: 1 week
The patches are unexpectedly causing gcc to fail while
building ports/graphics/ImageMagick even when the cpu
flags are not used.
Reported by: Andreas Tobler
Initial support for the AMD barcelona chipsets has been available in the
gcc43 branch under GPLv2 but was not included when the Core 2 support
was brought to the system gcc.
AMD and some linux distributions (OpenSUSE) did a backport of the amdfam10
support and made them available. Unfortunately this is still experimental
and while it can improve performance, enabling the CPUTYPE may break some
C++ ports (like clang).
Special care was taken to make sure that the patches predate the GPLv3
switch upstream.
Tested by: Vladimir Kushnir
Reviewed by: mm
Approved by: jhb (mentor)
MFC after: 2 weeks
the GCC 4.1 branch and are available under GPLv2.
2007-11-07 Eric Botcazou <ebotcazou@libertysurf.fr>
PR rtl-optimization/33822
* rtl.h (REG_OFFSET): Fix comment.
* var-tracking.c (INT_MEM_OFFSET): New macro.
(var_mem_set): Use it.
(var_mem_delete_and_set): Likewise.
(var_mem_delete): Likewise.
(vt_get_decl_and_offset): Likewise.
(offset_valid_for_tracked_p): New predicate.
(count_uses): Do not track locations with invalid offsets.
(add_uses): Likewise.
(add_stores): Likewise.
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=129972
2007-11-16 Richard Guenther <rguenther@suse.de>
PR middle-end/34030
* fold-const.c (fold_binary): Use correct types for folding
1 << X & Y to Y >> X & 1.
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130242
2008-01-14 Eric Botcazou <ebotcazou@adacore.com>
PR rtl-optimization/31944
* cse.c (remove_pseudo_from_table): New function.
(merge_equiv_classes): Use above function to remove pseudo-registers.
(invalidate): Likewise
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=131524
2008-01-24 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
Backport:
2007-11-07 Kenneth Zadeck <zadeck@naturalbridge.com>
PR middle-end/33826
* ipa-pure-const (static_execute): Added code to keep recursive
functions from being marked as pure or const.
* ipa-utils (searchc): Fixed comment.
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=131807
2008-02-01 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
Backport:
2007-08-02 Nathan Froyd <froydnj@codesourcery.com>
PR middle-end/25445
* varasm.c (default_binds_local_p_1): Consult flag_whole_program
if we are compiling with -fPIC.
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=132061
2008-02-04 Richard Guenther <rguenther@suse.de>
PR middle-end/33631
* expr.c (count_type_elements): Give for unions instead of
guessing.
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=132101
2008-02-14 Alan Modra <amodra@bigpond.net.au>
PR target/34393
* config/rs6000/rs6000.md (restore_stack_block): Force operands[1]
to a reg.
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=132309
2008-03-25 Richard Guenther <rguenther@suse.de>
Backport from mainline:
2008-02-12 Richard Guenther <rguenther@suse.de>
PR middle-end/35163
* fold-const.c (fold_widened_comparison): Use get_unwidened in
value-preserving mode. Disallow final truncation.
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=133509
2008-11-30 Eric Botcazou <ebotcazou@adacore.com>
PR target/38287
* config/sparc/sparc.md (divsi3 expander): Remove constraints.
(divsi3_sp32): Add new alternative with 'K' for operand #2.
(cmp_sdiv_cc_set): Factor common string.
(udivsi3_sp32): Add new alternative with 'K' for operand #2.
Add TARGET_V9 case.
(cmp_udiv_cc_set): Factor common string.
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=142298
Reviewed by: mm
Approved by: jhb (mentor)
MFC after: 1 week
The fix is similar to the one applied in GCC-4.3 in
GCCSVN-r117929 under the GPLv2.
Submitted by: Andrey Simonenko
Reviewed by: mm
Approved by: jhb (mentor)
MFC after: 3 days
but used by some Linux boot loaders). This option prints
out the directory holding the include files needed by
a freestanding program. The default implementation of
this doesn't work on FreeBSD because of the different
include file layout. But it's easy to implement:
just return /usr/include (or the cross-compiling equivalent).
Reviewed by: kan
MFC after: 1 week
Backported from the gcc-4_3-branch, revision 118001,
under the GPLv2.
This issue was also fixed in Apple's gcc.
PR: 157025
Reviewed by: mm
Approved by: jhb (mentor)
MFC: 2 weeks
declares the proper size of a function. Without this macro recent GNU as will
complain about with:
'Error: .size expression for main does not evaluate to a constant.'
Up to now we produce this:
.L.main:
....
.size main, .-main
With the macro defined the output is this:
.L.main:
....
.size main,.-.L.main
This affects only the 64-bit compiler.
Tested with world and kernel on both, 32 and 64-bit powerpc.
as anonymous namespaces are local to the current translation.
GCC PR: c++/33094
Reviewed by: uqs
Approved by: re (kib)
Obtained from: gcc (branches/redhat/gcc-4_1-branch, rev. 129554, GPLv2)
MFC after: 1 week
- Implement -Wvariable-decl.
- Port -Wtrampolines support from gcc3.
(all three also via OpenBSD)
PR: gnu/127136, gnu/157019
Submitted by: Henning Petersen, Pedro Giffuni
MFC after: 6 weeks
These options are supported in this shape in all newer GCC versions.
PR: gnu/155308
Obtained from: gcc 4.3 (rev. 118090, 118973, 120846; GPLv2)
MFC after: 2 weeks
and k8-sse3 cpu-types for -march=/-mtune= gcc options.
These new cpu-types include the SSE3 instruction set that is supported
by all newer AMD Athlon 64 and Opteron processors.
All three cpu-types are supported by clang and all gcc versions
starting with 4.3 SVN rev 124339 (at that time GPLv2 licensed).
PR: gnu/154906
Discussed with: kib, kan, dim
Obtained from: gcc 4.3 (r124339, GPLv2 licensed)
MFC after: 2 weeks
Mark gcc-provided asm files as not requiring executable stack.
It seems that non-FreeBSD ABIs for powerpc64 claim stack non-executable.
Due to this, rs6000_elf_end_indicate_exec_stack() only emit the note for
32 bit target. I decided not to change FreeBSD ABI and patch
emit the notes for both variants.
Reviewed and tested by: nwhitehorn
actually work, linking of libgcc_s.so.1 on ia64 will fail with:
unwind-ia64.So(.text+0x1762): In function `_Unwind_FindEnclosingFunction':
: undefined reference to `_Unwind_FindTableEntry'
unwind-ia64.So(.text+0x1d82): In function `uw_frame_state_for':
: undefined reference to `_Unwind_FindTableEntry'
/usr/bin/ld: libgcc_s.so.1: hidden symbol `_Unwind_FindTableEntry' isn't defined
Repair this by not hiding the _Unwind_FindTableEntry symbol; on FreeBSD,
it is in libc, not in libgcc.
Silence from: current@
stack unwinding, instead of naively trying to check the instruction at
that location. This fixes signal handling in threaded applications after
recent changes regarding unwinding in libthr. While here, clean up our
MD_FROB_UPDATE_CONTEXT() implementation a little.
o force_to_data
o __CTOR_LIST__
o __do_global_dtors_aux_fini_array_entry
o __frame_dummy_init_array_entry
This is necessary because Clang is smart enough to optimize out these
variables was they were marked as __unused__ (and they are also static).
The end result was programs segfaulting because these symbols weren't
present.
This follows the upstream revision 159228 and the author of that
revision (Jan Hubicka <jh at suse.de>) allowed us to backport this to our
GPLv2 GCC.
Discussed with: core
which are apparently "heinous" GNU extensions, so clang can
compile this without using the -fheinous-gnu-extensions option.
Results in *no* binary change, neither with clang, nor with gcc.
Submitted by: Dimitry Andric <dimitry at andric.com>
a variety of bugs in binutils related to handling of 64-bit PPC ELF,
provides a GCC configuration for 64-bit PowerPC on FreeBSD, and
associated build systems tweaks.
Obtained from: projects/ppc64
o) Add TARGET_ABI to the MIPS toolchain build process. This sets the default
ABI to one of o32, n32 or n64. If it is not set, o32 is assumed as that is
the current default.
o) Set the default GCC cpu type to any specified TARGET_CPUTYPE. This is
necessary to have a working "cc" if e.g. mips64 is specified, as binutils
will refuse to link objects using different ISAs in some cases.
o) Add support for n32 and n64 ABIs to binutils and GCC.
o) Add additional required libgcc2 stubs for n32 and n64.
o) Add support for the "mips64r2" architecture to GCC. Add the "octeon"
o) When static linking, wrap default libraries in --start-group and
--end-group. This is required for static linking to work on n64 with the
interdependencies between libraries there. This is what other OSes that
support n64 seem to do, as well.
o) Fix our GCC spec to define __mips64 for 64-bit targets, not __mips64__, the
former being what libgcc, etc., check and the latter seemingly being a
misspelling of a hand merge from a Linux spec.
o) When no TARGET_CPUTYPE is specified at build time, make GCC take the default
ISA from the ABI. Our old defaults were too liberal and assumed that 64-bit
ABIs should default to the MIPS64 ISA and that 32-bit ABIs should default to
the MIPS32 ISA, when we are supporting or will support some systems based on
earlier 32-bit and 64-bit ISAs, most notably MIPS-III.
o) Merge a new opcode file (and support code) from a later version of binutils
and add flags and code necessary to support Octeon-specific instructions.
This should also make merging opcodes for other modern architectures easier.
Reviewed by: imp
