[AVX-512] Fix bad comment from r299112. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299114 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86FastISel.cpp b/lib/Target/X86/X86FastISel.cpp
index 06850f3..f225696 100644 (file)
--- a/lib/Target/X86/X86FastISel.cpp
+++ b/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.