https://llvm.org/bugs/show_bug.cgi?id=31589
Bug ID: 31589
Summary: [AVX512] Crash lowering saturating truncate.
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
Running llc on:
define void @ham() #0 {
%tmp = icmp ult <32 x i32> undef, <i32 255, i32 255, i32 255, i32 255, i32
255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255,
i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32
255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255,
i32 255, i32 255>
%tmp2 = select <32 x i1> %tmp, <32 x i32> undef, <32 x i32> <i32 255, i32
255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255,
i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32
255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255,
i32 255, i32 255, i32 255, i32 255, i32 255>
%tmp3 = trunc <32 x i32> %tmp2 to <32 x i8>
store <32 x i8> %tmp3, <32 x i8>* undef, align 1
ret void
}
attributes #0 = {"target-cpu"="skylake-avx512"}
Reaches unreachable in X86TargetLowering::LowerOperation():
Should not custom lower this!
UNREACHABLE executed at ../lib/Target/X86/X86ISelLowering.cpp:22990!
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