https://bugs.llvm.org/show_bug.cgi?id=51385
Bug ID: 51385
Summary: wrong code at -O1 and above on x86_64-linux-gnu
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
This seems to be a recent regression as 12.0.1 correctly compiles the code.
[578] % clangtk -v
clang version 14.0.0 (https://github.com/llvm/llvm-project.git
82ca845b479359057410c14600f586fd7c86fd5b)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /local/suz-local/opfuzz/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.5.0
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
[579] %
[579] % clangtk -O0 small.c; ./a.out
[580] %
[580] % clangtk -O1 small.c
[581] % ./a.out
Aborted
[582] %
[582] % cat small.c
int a;
int main() {
int b;
L:
b = a;
if (a <= 0) {
int c = a;
a = 1;
if (c)
goto L;
}
if (b) {
b = a;
__builtin_abort ();
}
return 0;
}
--
You are receiving this mail because:
You are on the CC list for the bug._______________________________________________
llvm-bugs mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
