[llvm] 0c623b5 - [X86] X86CompressEVEX.cpp - ensure we tie the operands on MOVBErr instructions

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2024-01-30T11:44:58Z
New Revision: 0c623b58e39cba7e67a0049dbcac87fdcc0103e1

URL: https://github.com/llvm/llvm-project/commit/0c623b58e39cba7e67a0049dbcac87fdcc0103e1
DIFF: https://github.com/llvm/llvm-project/commit/0c623b58e39cba7e67a0049dbcac87fdcc0103e1.diff

LOG: [X86] X86CompressEVEX.cpp - ensure we tie the operands on MOVBErr instructions

Minor correction for #79775 - noticed in EXPENSIVE_CHECKS builds

Added: 
    

Modified: 
    llvm/lib/Target/X86/X86CompressEVEX.cpp

Removed: 
    


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diff  --git a/llvm/lib/Target/X86/X86CompressEVEX.cpp b/llvm/lib/Target/X86/X86CompressEVEX.cpp
index 9132f0d1c2c0..e1404eca37fb 100644
--- a/llvm/lib/Target/X86/X86CompressEVEX.cpp
+++ b/llvm/lib/Target/X86/X86CompressEVEX.cpp
@@ -267,7 +267,7 @@ static bool CompressEVEXImpl(MachineInstr &MI, const X86Subtarget &ST) {
     llvm_unreachable("Unknown EVEX compression");
   }
   MI.setAsmPrinterFlag(AsmComment);
-  if (IsND)
+  if (IsND || IsMovberr)
     MI.tieOperands(0, 1);
 
   return true;