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i386.c (ix86_expand_movmem, [...]): Add zero guard even if align_bytes != 0 and count is smaller than size_needed. 

* config/i386/i386.c (ix86_expand_movmem, ix86_expand_setmem): Add
	zero guard even if align_bytes != 0 and count is smaller than
	size_needed.

From-SVN: r143229
This commit is contained in:
Jakub Jelinek 2009-01-09 21:03:37 +01:00 committed by Jakub Jelinek
parent a174c19c0f
commit c9da2ae8ab
2 changed files with 8 additions and 2 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2009-01-09 Jakub Jelinek <jakub@redhat.com>
* config/i386/i386.c (ix86_expand_movmem, ix86_expand_setmem): Add
zero guard even if align_bytes != 0 and count is smaller than
size_needed.
2008-01-09 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/38495

4
gcc/config/i386/i386.c
View File

@ -17720,7 +17720,7 @@ ix86_expand_movmem (rtx dst, rtx src, rtx count_exp, rtx align_exp,
count -= align_bytes;
}
if (need_zero_guard
&& (!count
&& (count < (unsigned HOST_WIDE_INT) size_needed
|| (align_bytes == 0
&& count < ((unsigned HOST_WIDE_INT) size_needed
+ desired_align - align))))
@ -18112,7 +18112,7 @@ ix86_expand_setmem (rtx dst, rtx count_exp, rtx val_exp, rtx align_exp,
count -= align_bytes;
}
if (need_zero_guard
&& (!count
&& (count < (unsigned HOST_WIDE_INT) size_needed
|| (align_bytes == 0
&& count < ((unsigned HOST_WIDE_INT) size_needed
+ desired_align - align))))