diff options
| -rw-r--r-- | llvm/lib/Target/X86/X86FastISel.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86FastISel.cpp b/llvm/lib/Target/X86/X86FastISel.cpp index 06850f36309..f225696afe2 100644 --- a/llvm/lib/Target/X86/X86FastISel.cpp +++ b/llvm/lib/Target/X86/X86FastISel.cpp @@ -3533,7 +3533,8 @@ bool X86FastISel::fastLowerCall(CallLoweringInfo &CLI) { report_fatal_error("SSE register return with SSE disabled"); } - // If the return value is an i1 and AVX-512 is enabled, stop. + // If the return value is an i1 and AVX-512 is enabled, we need + // to do a fixup to make the copy legal. if (CopyVT == MVT::i1 && SrcReg == X86::AL && Subtarget->hasAVX512()) { // Need to copy to a GR32 first. // TODO: MOVZX isn't great here. We don't care about the upper bits. |
