| Issue |
132724
|
| Summary |
[clang] Miscompile at O2
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
cardigan1008
|
This code prints 83619472 at `-O0/1` and 83619480 at `-O2/3`:
```c
int printf(const char *, ...);
int a, b;
int main() {
int c = 7;
float d = 0;
while (c) {
d++;
c /= 2;
a = 384 + 1;
}
float e = a + 2;
b = d + 1.442695f * (e * e * e);
printf("%d\n", b);
}
```
Compiler Explorer: https://godbolt.org/z/f5bf9os1P
Bisected to https://github.com/llvm/llvm-project/commit/17d9560294eee1eae5e2d3ac1ab84f514318409e, which was committed by @zahiraam
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