diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86DomainReassignment.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86DomainReassignment.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86DomainReassignment.cpp b/llvm/lib/Target/X86/X86DomainReassignment.cpp index 7e1f1e7876c..d9ebbb506ca 100644 --- a/llvm/lib/Target/X86/X86DomainReassignment.cpp +++ b/llvm/lib/Target/X86/X86DomainReassignment.cpp @@ -732,7 +732,10 @@ bool X86DomainReassignment::runOnMachineFunction(MachineFunction &MF) { STI = &MF.getSubtarget<X86Subtarget>(); // GPR->K is the only transformation currently supported, bail out early if no // AVX512. - if (!STI->hasAVX512()) + // TODO: We're also bailing of AVX512BW isn't supported since we use VK32 and + // VK64 for GR32/GR64, but those aren't legal classes on KNL. If the register + // coalescer doesn't clean it up and we generate a spill we will crash. + if (!STI->hasAVX512() || !STI->hasBWI()) return false; MRI = &MF.getRegInfo(); |
