mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-04-05 23:31:21 +08:00
Code Issues Packages Projects Releases Wiki Activity

re PR target/87561 (416.gamess is slower by ~10% starting from r264866 with -Ofast)

Browse Source 
2019-03-18  Richard Biener  <rguenther@suse.de>

	PR target/87561
	* config/i386/i386.c (ix86_add_stmt_cost): Apply strided
	load pessimization to stores as well.

From-SVN: r269753
This commit is contained in:
Richard Biener 2019-03-18 09:16:56 +00:00 committed by Richard Biener
parent 1d24f24c6a
commit 0538ed1d36
2 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2019-03-18 Richard Biener <rguenther@suse.de>
PR target/87561
* config/i386/i386.c (ix86_add_stmt_cost): Apply strided
load pessimization to stores as well.
2019-03-18 Andrey Belevantsev <abel@ispras.ru>
PR middle-end/86979

5
gcc/config/i386/i386.c
View File

@ -50564,9 +50564,10 @@ ix86_add_stmt_cost (void *data, int count, enum vect_cost_for_stmt kind,
latency and execution resources for the many scalar loads
(AGU and load ports). Try to account for this by scaling the
construction cost by the number of elements involved. */
if (kind == vec_construct
if ((kind == vec_construct || kind == vec_to_scalar)
&& stmt_info
&& STMT_VINFO_TYPE (stmt_info) == load_vec_info_type
&& (STMT_VINFO_TYPE (stmt_info) == load_vec_info_type
|| STMT_VINFO_TYPE (stmt_info) == store_vec_info_type)
&& STMT_VINFO_MEMORY_ACCESS_TYPE (stmt_info) == VMAT_ELEMENTWISE
&& TREE_CODE (DR_STEP (STMT_VINFO_DATA_REF (stmt_info))) != INTEGER_CST)
{