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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [AArch64] Inconsistent running results under O0/O2"
href="https://bugs.llvm.org/show_bug.cgi?id=47543">47543</a>
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<th>Summary</th>
<td>[AArch64] Inconsistent running results under O0/O2
</td>
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Backend: AArch64
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>wweiandrew@gmail.com
</td>
</tr>
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<th>CC</th>
<td>arnaud.degrandmaison@arm.com, llvm-bugs@lists.llvm.org, smithp352@googlemail.com, Ties.Stuij@arm.com
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<p>
<div>
<pre>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);
}</pre>
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