https://llvm.org/bugs/show_bug.cgi?id=31306
Bug ID: 31306
Summary: [AVX-512] Compiler crash: Cannot select: t41: v8i64 =
X86ISD::SUBV_BROADCAST
Product: new-bugs
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: babo...@gmail.com
CC: llvm-bugs@lists.llvm.org, vsevolod.livins...@frtk.ru
Classification: Unclassified
Created attachment 17732
--> https://llvm.org/bugs/attachment.cgi?id=17732&action=edit
reproducer
This is recently introduced bug in trunk. It's reproduced with skx and knl
targets.
> clang++ -c -O2 -march=skx subv_broadcast.cpp
fatal error: error in backend: Cannot select: t41: v8i64 =
X86ISD::SUBV_BROADCAST t40
t40: v4i64,ch = load<LD32[ConstantPool]> t0, t49, undef:i64
t49: i64 = X86ISD::Wrapper TargetConstantPool:i64<<4 x i64> <i64 -4096, i64
-1099511627776, i64 -4294967296, i64 -8589934592>> 0
t48: i64 = TargetConstantPool<<4 x i64> <i64 -4096, i64 -1099511627776,
i64 -4294967296, i64 -8589934592>> 0
t3: i64 = undef
In function: _Z1ov
clang-4.0: error: clang frontend command failed with exit code 70 (use -v to
see invocation)
clang version 4.0.0 (trunk 288907)
Target: x86_64-unknown-linux-gnu
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