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[Bug tree-optimization/61403] An opportunity for x86 gcc vectorizer (~40% gain)
- From: "kyukhin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 18 Jun 2014 07:46:50 +0000
- Subject: [Bug tree-optimization/61403] An opportunity for x86 gcc vectorizer (~40% gain)
- Auto-submitted: auto-generated
- References: <bug-61403-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61403
--- Comment #1 from Kirill Yukhin <kyukhin at gcc dot gnu.org> ---
Author: kyukhin
Date: Wed Jun 18 07:46:18 2014
New Revision: 211769
URL: https://gcc.gnu.org/viewcvs?rev=211769&root=gcc&view=rev
Log:
gcc/
* config/i386/i386.c (ix86_reassociation_width): Add alternative for
vector case.
* config/i386/i386.h (TARGET_VECTOR_PARALLEL_EXECUTION): New.
* config/i386/x86-tune.def (X86_TUNE_VECTOR_PARALLEL_EXECUTION): New.
* tree-vect-data-refs.c (vect_shift_permute_load_chain): New.
Introduces alternative way of loads group permutaions.
(vect_transform_grouped_load): Try alternative way of permutations.
gcc/testsuite/
PR tree-optimization/52252
* gcc.target/i386/pr52252-atom.c: Test on loads group of size 3.
* gcc.target/i386/pr52252-core.c: Ditto.
PR tree-optimization/61403
* gcc.target/i386/pr61403.c: Test on loads and stores group of size 3.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr52252-atom.c
trunk/gcc/testsuite/gcc.target/i386/pr52252-core.c
trunk/gcc/testsuite/gcc.target/i386/pr61403.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/config/i386/i386.h
trunk/gcc/config/i386/x86-tune.def
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-data-refs.c