https://bugs.llvm.org/show_bug.cgi?id=47543
Bug ID: 47543
Summary: [AArch64] Inconsistent running results under O0/O2
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: AArch64
Assignee: unassignedb...@nondot.org
Reporter: wweiand...@gmail.com
CC: arnaud.degrandmai...@arm.com,
llvm-bugs@lists.llvm.org, smithp...@googlemail.com,
ties.st...@arm.com
Testcase will like below：
#include <bits/types.h>
typedef __int32_t int32_t;
typedef __int64_t int64_t;
typedef __uint32_t uint32_t;
typedef __uint64_t uint64_t;
static uint64_t a = 66296709418;
int b, d, e;
void func2(uint64_t l) {
a = 0;
int32_t n = (int32_t)l;
for (; b != 0; b++) {
int64_t *q = e;
*q = n;
if (&d) {
int32_t *s = &n;
*s = 0;
}
}
printf("\n n = %d\n", (int32_t) (n));
printf(" n = %llu\n", (uint64_t)(n));
}
main() {
uint64_t *k = &a;
func2(*k);
}
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