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rs6000-string.c (expand_block_clear): Don't use unaligned vsx for 16B memset. 

2018-06-26  Aaron Sawdey  <acsawdey@linux.ibm.com>

	* config/rs6000/rs6000-string.c (expand_block_clear): Don't use
	unaligned vsx for 16B memset.

From-SVN: r262158
This commit is contained in:
Aaron Sawdey 2018-06-26 16:46:51 +00:00 committed by Aaron Sawdey
parent 12169ac796
commit 31369f5a35
2 changed files with 8 additions and 1 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2018-06-26 Aaron Sawdey <acsawdey@linux.ibm.com>
* config/rs6000/rs6000-string.c (expand_block_clear): Don't use
unaligned vsx for 16B memset.
2018-06-26 Segher Boessenkool <segher@kernel.crashing.org>
PR target/86285

4
gcc/config/rs6000/rs6000-string.c
View File

@ -90,7 +90,9 @@ expand_block_clear (rtx operands[])
machine_mode mode = BLKmode;
rtx dest;
if (bytes >= 16 && TARGET_ALTIVEC && (align >= 128 || TARGET_EFFICIENT_UNALIGNED_VSX))
if (TARGET_ALTIVEC
&& ((bytes >= 16 && align >= 128)
|| (bytes >= 32 && TARGET_EFFICIENT_UNALIGNED_VSX)))
{
clear_bytes = 16;
mode = V4SImode;