| Issue |
60983
|
| Summary |
[clang17] File blowup and timeout for generating llvm IR file with -emit-llvm
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
cbossut7
|
Clang compiles the file fine.
$ clang-trunk -O3 abc.c -o abc.out
However it never finishes generating an ir file, which also blows up in size.
$ timeout -s 9 20 clang-trunk -O3 abc.c -emit-llvm -S -o abc.ll
Killed
$ clang-trunk --version
clang version 17.0.0 (https://github.com/llvm/llvm-project.git a52432f633127036f5da7bedd83bacb1083cb833)
This seems to be a problem with the latest clang. It emits an ir file for clang 13 without issue.
$ clang-13 -O3 abc.c -emit-llvm -S -o abc.ll
$ clang-13 --version
clang version 13.0.0
$ cat abc.c
typedef int h;
int a[], c[];
h b, g, f, e, d, l;
short n;
short(o)(short p, int q) { return q >= 2 || p > 7 >> p << q; }
void r() {
h *i = &b, *j = &a[3];
for (; g; g++) {
h *k = &c[2], *m = &b;
for (; f;)
;
e = -7;
for (; e; ++e) {
l = 0;
for (; l <= 8; l++) {
n = o(*i & m == k, f);
*m = (&d == j) - (3 && n);
}
}
}
}
void main() {}
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