Is it ok to backport patches, with Changelogs below, already in trunk to gcc
4.6? These patches are for AVX-256bit load store splitting. These patches
make significant performance difference >=3% to several CPU2006 and
Polyhedron benchmarks on latest AMD and Intel hardware. If ok, I will post
backported patches for commit approval.
AMD plans to submit additional patches on AVX-256 load/store splitting to
trunk. We will send additional backport requests for those later once they
are accepted/comitted to trunk.
[PATCH] Split 32-byte AVX unaligned load/store.
gcc/
2011-03-27 H.J. Lu <hongjiu...@intel.com>
* config/i386/i386.c (flag_opts): Add -mavx256-split-unaligned-load
and -mavx256-split-unaligned-store.
(ix86_option_override_internal): Split 32-byte AVX unaligned
load/store by default.
(ix86_avx256_split_vector_move_misalign): New.
(ix86_expand_vector_move_misalign): Use it.
* config/i386/i386.opt: Add -mavx256-split-unaligned-load and
-mavx256-split-unaligned-store.
* config/i386/sse.md (*avx_mov<mode>_internal): Verify unaligned
256bit load/store. Generate unaligned store on misaligned memory
operand.
(*avx_movu<ssemodesuffix><avxmodesuffix>): Verify unaligned
256bit load/store.
(*avx_movdqu<avxmodesuffix>): Likewise.
* doc/invoke.texi: Document -mavx256-split-unaligned-load and
-mavx256-split-unaligned-store.
gcc/testsuite/
2011-03-27 H.J. Lu <hongjiu...@intel.com>
* gcc.target/i386/avx256-unaligned-load-1.c: New.
* gcc.target/i386/avx256-unaligned-load-2.c: Likewise.
* gcc.target/i386/avx256-unaligned-load-3.c: Likewise.
* gcc.target/i386/avx256-unaligned-load-4.c: Likewise.
* gcc.target/i386/avx256-unaligned-load-5.c: Likewise.
* gcc.target/i386/avx256-unaligned-load-6.c: Likewise.
* gcc.target/i386/avx256-unaligned-load-7.c: Likewise.
* gcc.target/i386/avx256-unaligned-store-1.c: Likewise.
* gcc.target/i386/avx256-unaligned-store-2.c: Likewise.
* gcc.target/i386/avx256-unaligned-store-3.c: Likewise.
* gcc.target/i386/avx256-unaligned-store-4.c: Likewise.
* gcc.target/i386/avx256-unaligned-store-5.c: Likewise.
* gcc.target/i386/avx256-unaligned-store-6.c: Likewise.
* gcc.target/i386/avx256-unaligned-store-7.c: Likewise.
[PATCH] Don't assert unaligned 256bit load/store.
2011-03-27 H.J. Lu <hongjiu...@intel.com>
* config/i386/sse.md (*avx_mov<mode>_internal): Don't assert
unaligned 256bit load/store.
(*avx_movu<ssemodesuffix><avxmodesuffix>): Likewise.
(*avx_movdqu<avxmodesuffix>): Likewise.
[PATCH] Fix a typo in -mavx256-split-unaligned-store.
2011-03-28 H.J. Lu <hongjiu...@intel.com>
* config/i386/i386.c (flag_opts): Fix a typo in
-mavx256-split-unaligned-store.
[PATCH] * config/i386/i386.c (ix86_reorg): Run move_or_delete_vzeroupper first.
2011-05-04 Uros Bizjak <ubiz...@gmail.com>
* config/i386/i386.c (ix86_reorg): Run move_or_delete_vzeroupper first.
[PATCH] Save the initial options after checking vzeroupper.
gcc/
2011-05-23 H.J. Lu <hongjiu...@intel.com>
PR target/47315
* config/i386/i386.c (ix86_option_override_internal): Save the
initial options after checking vzeroupper.
gcc/testsuite/
2011-05-23 H.J. Lu <hongjiu...@intel.com>
PR target/47315
* gcc.target/i386/pr47315.c: New test.
