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x86: Add a test for PR target/118936

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Add a test for PR target/118936 which was fixed by reverting:

565d4e7554 i386: Simplify PARALLEL RTX scan in ix86_find_all_reg_use
11902be7a5 x86: Properly find the maximum stack slot alignment

	PR target/118936
	* gcc.target/i386/pr118936.c: New test.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
This commit is contained in:
H.J. Lu 2025-02-19 19:48:07 +08:00
parent 6921c93d20
commit 83bc61c9fd
1 changed files with 22 additions and 0 deletions
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22
gcc/testsuite/gcc.target/i386/pr118936.c Normal file
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/* { dg-do compile } */
/* { dg-options "-O3 -fno-omit-frame-pointer -fno-toplevel-reorder" } */
struct S1
{
int f1 : 17;
int f2 : 23;
int f3 : 11;
int f4 : 31;
int f6;
};
volatile struct S1 **g_1680;
volatile struct S1 ***g_1679[8][8];
void
func_40 (struct S1 p_41, short *l_2436)
{
char __trans_tmp_3;
__trans_tmp_3 = p_41.f6;
*l_2436 ^= __trans_tmp_3;
for (int i = 0; i < 8; i+= 1)
g_1679[1][i] = &g_1680;
}