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

RKSimon · RKSimon · commit 0c623b58e39c · 2024-01-30T11:44:58.000Z
Minor correction for llvm#79775 - noticed in EXPENSIVE_CHECKS builds
diff --git 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;

Original file line number	Diff line number	Diff line change
`@@ -267,7 +267,7 @@ static bool CompressEVEXImpl(MachineInstr &MI, const X86Subtarget &ST) {`
`267`	`267`	`llvm_unreachable("Unknown EVEX compression");`
`268`	`268`	`}`
`269`	`269`	`MI.setAsmPrinterFlag(AsmComment);`
`270`		`- if (IsND)`
	`270`	`+ if (IsND \|\| IsMovberr)`
`271`	`271`	`MI.tieOperands(0, 1);`
`272`	`272`
`273`	`273`	`return true;`