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i386.c (ix86_expand_movmem): Fix epilogue generation.

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gcc:
* config/i386/i386.c (ix86_expand_movmem): Fix epilogue generation.

gcc/testsuite:
* gcc.dg/torture/memcpy-1.c: New test.

From-SVN: r202423
This commit is contained in:
Michael Zolotukhin 2013-09-10 07:53:22 +00:00 committed by Kirill Yukhin
parent 32a19da43b
commit ff131f2627
4 changed files with 31 additions and 1 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2013-09-10 Michael Zolotukhin <michael.v.zolotukhin@gmail.com>
* config/i386/i386.c (ix86_expand_movmem): Fix epilogue generation.
2013-09-10 Alan Modra <amodra@gmail.com>
PR target/58330

2
gcc/config/i386/i386.c
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@ -23329,7 +23329,7 @@ ix86_expand_movmem (rtx dst, rtx src, rtx count_exp, rtx align_exp,
if (count_exp != const0_rtx && epilogue_size_needed > 1)
expand_movmem_epilogue (dst, src, destreg, srcreg, count_exp,
size_needed);
epilogue_size_needed);
if (jump_around_label)
emit_label (jump_around_label);
return true;

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2013-09-10 Michael Zolotukhin <michael.v.zolotukhin@gmail.com>
* gcc.dg/torture/memcpy-1.c: New test.
2013-09-10 Alan Modra <amodra@gmail.com>
* gcc.target/powerpc/pr58330.c: New.

22
gcc/testsuite/gcc.dg/torture/memcpy-1.c Normal file
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@ -0,0 +1,22 @@
/* { dg-do run } */
/* { dg-additional-options "-mtune=pentiumpro" { target ia32 } } */
/* { dg-additional-options "-minline-all-stringops" { target { i?86-*-* x86_64-*-* } } } */
static void __attribute__((noinline, noclone))
my_memcpy (char *dest, const char *src, int n)
{
__builtin_memcpy (dest, src, n);
}
int
main (void)
{
char a1[4], a2[4];
__builtin_memset (a1, 'a', 4);
__builtin_memset (a2, 'b', 4);
my_memcpy (a2, a1, 4);
if (a2[0] != 'a')
__builtin_abort ();
return 0;
}