https://llvm.org/bugs/show_bug.cgi?id=28173
Bug ID: 28173
Summary: AVX512F crashes lowering anyext from i1 to i64
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: X86
Assignee: unassignedb...@nondot.org
Reporter: mku...@google.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
long long bar();
long long foo(bool i, int j) {
if (j)
return bar();
return i | (-1ULL - 1);
}
When compiling with -mavx512f, we get:
fatal error: error in backend: Cannot select: 0x417f800: i64 = any_extend
0x4181c10
0x4181c10: i1,ch = CopyFromReg 0x4106ec0, Register:i1 %vreg2
0x4182200: i1 = Register %vreg2
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