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testsuite: Add testcase for already fixed PR [PR112924]

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This testcase got fixed with
r14-6132-g50f2a3370d177f8fe9bea0461feb710523e048a2 .
I'm just adding a testcase so that it doesn't reappear.

2023-12-09  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/112924
	* gcc.dg/pr112924.c: New test.
This commit is contained in:
Jakub Jelinek 2023-12-09 15:29:51 +01:00
parent cdf45e00a9
commit af8bbd631f
1 changed files with 26 additions and 0 deletions
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26
gcc/testsuite/gcc.dg/pr112924.c Normal file
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/* PR tree-optimization/112924 */
/* { dg-do compile } */
/* { dg-options "-O2 -w" } */
/* { dg-additional-options "-msse2" { target i?86-*-* x86_64-*-* } } */
struct S { long a; char b[64]; };
void foo (struct S a);
char c;
int d[3541];
static void
bar (struct S *s, char *p)
{
unsigned int a = sizeof (d) - sizeof (int) - s->a;
long c = __builtin_object_size (s, 0);
for (; a >= 64; a -= 64, p += 4);
__builtin___memcpy_chk (s, p, a, c);
}
void
baz (void)
{
struct S s = {};
bar (&s, &c);
foo (s);
}