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Add fgcse-sm test with scan-rtl-dump

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2014-11-21  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/store-motion-fgcse-sm.c: New test.

From-SVN: r217916
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Tom de Vries 2014-11-21 12:26:11 +00:00 committed by Tom de Vries
parent fc065a61a0
commit ba483b00de
2 changed files with 36 additions and 0 deletions
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gcc/testsuite/ChangeLog
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2014-11-21 Tom de Vries <tom@codesourcery.com>
* gcc.dg/store-motion-fgcse-sm.c: New test.
2014-11-21 Evgeny Stupachenko <evstupac@gmail.com>
PR target/60451

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gcc/testsuite/gcc.dg/store-motion-fgcse-sm.c Normal file
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/* { dg-do run } */
/* { dg-options "-O2 -ftree-pre -fno-tree-loop-im -fgcse-sm -fdump-rtl-store_motion" } */
/* tree-pre moves the *sum load out of the loop. ftree-loop-im moves the *sum
store out of the loop, so we disable it, to allow fgcse-sm to do it
instead. */
#include <stdlib.h>
void __attribute__((noinline))
f (unsigned int *__restrict__ a, unsigned int *__restrict__ sum, unsigned int n)
{
unsigned int i;
for (i = 0; i < n; ++i)
*sum += a[i];
}
int
main ()
{
unsigned int a[] = { 1, 10, 100 };
unsigned sum = 1000;
f (a, &sum, 3);
if (sum != 1111)
abort ();
return 0;
}
/* Check that -fgcse-sm did something for f. */
/* { dg-final { scan-rtl-dump "STORE_MOTION of f, .* basic blocks, 1 insns deleted, 1 insns created" "store_motion" } } */