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re PR tree-optimization/27285 (ivopts postgresql miscompilation)

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PR tree-optimization/27285
	* gcc.c-torture/execute/pr27285.c: New test.

From-SVN: r113516
This commit is contained in:
Jakub Jelinek 2006-05-04 08:43:50 +02:00 • committed by Jakub Jelinek
parent f6a5ffbfbf
commit 0d4b9fa4c8
2 changed files with 49 additions and 0 deletions
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3
gcc/testsuite/ChangeLog
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@ -1,5 +1,8 @@
2006-05-04 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/27285
* gcc.c-torture/execute/pr27285.c: New test.
PR middle-end/27388
* gcc.dg/gomp/pr27388-1.c: New test.
* gcc.dg/gomp/pr27388-2.c: New test.

46
gcc/testsuite/gcc.c-torture/execute/pr27285.c Normal file
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@ -0,0 +1,46 @@
/* PR tree-optimization/27285 */
extern void abort (void);
struct S { unsigned char a, b, c, d[16]; };
void __attribute__ ((noinline))
foo (struct S *x, struct S *y)
{
int a, b;
unsigned char c, *d, *e;
b = x->b;
d = x->d;
e = y->d;
a = 0;
while (b)
{
if (b >= 8)
{
c = 0xff;
b -= 8;
}
else
{
c = 0xff << (8 - b);
b = 0;
}
e[a] = d[a] & c;
a++;
}
}
int
main (void)
{
struct S x = { 0, 25, 0, { 0xaa, 0xbb, 0xcc, 0xdd }};
struct S y = { 0, 0, 0, { 0 }};
foo (&x, &y);
if (x.d[0] != y.d[0] || x.d[1] != y.d[1]
|| x.d[2] != y.d[2] || (x.d[3] & 0x80) != y.d[3])
abort ();
return 0;
}