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| author | Richard Biener <rguenther@suse.de> | 2018-04-24 08:46:55 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2018-04-24 08:46:55 +0000 |
| commit | 4149dd37d914325fd275675b29d39049612b0a76 (patch) | |
| tree | 41c552169a8910f8b6dae8473ca6de047998a742 /gcc | |
| parent | b72139eac230616ab92636cd0195b44eb235d23f (diff) | |
| download | gcc-4149dd37d914325fd275675b29d39049612b0a76.zip gcc-4149dd37d914325fd275675b29d39049612b0a76.tar.gz gcc-4149dd37d914325fd275675b29d39049612b0a76.tar.bz2 | |
re PR target/85491 (nbench LU Decomposition test 15% slower than GCC 7, 30% slower than peak)
2018-04-24 Richard Biener <rguenther@suse.de>
PR target/85491
* config/i386/i386.c (ix86_add_stmt_cost): Restrict strided
load cost increase to the case of non-constant step.
From-SVN: r259592
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/i386/i386.c | 5 |
2 files changed, 9 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d9e5c6f..933cc29 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2018-04-24 Richard Biener <rguenther@suse.de> + + PR target/85491 + * config/i386/i386.c (ix86_add_stmt_cost): Restrict strided + load cost increase to the case of non-constant step. + 2018-04-24 Jakub Jelinek <jakub@redhat.com> PR target/84828 diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index dc80b34..19d1c30 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -50550,8 +50550,9 @@ ix86_add_stmt_cost (void *data, int count, enum vect_cost_for_stmt kind, construction cost by the number of elements involved. */ if (kind == vec_construct && stmt_info - && stmt_info->type == load_vec_info_type - && stmt_info->memory_access_type == VMAT_ELEMENTWISE) + && STMT_VINFO_TYPE (stmt_info) == load_vec_info_type + && STMT_VINFO_MEMORY_ACCESS_TYPE (stmt_info) == VMAT_ELEMENTWISE + && TREE_CODE (DR_STEP (STMT_VINFO_DATA_REF (stmt_info))) != INTEGER_CST) { stmt_cost = ix86_builtin_vectorization_cost (kind, vectype, misalign); stmt_cost *= TYPE_VECTOR_SUBPARTS (vectype); |