Update llvm/lib/CodeGen/RegAllocFast.cpp

arsenm · cdevadas · arsenm · commit 34474b12d4b3 · 2025-02-26T06:20:08.000Z
Co-authored-by: Christudasan Devadasan &lt;christudasan.devadasan@amd.com&gt;
diff --git a/llvm/lib/CodeGen/RegAllocFast.cpp b/llvm/lib/CodeGen/RegAllocFast.cpp
@@ -1007,8 +1007,7 @@ void RegAllocFastImpl::allocVirtRegUndef(MachineOperand &MO) {
     MO.setSubReg(0);
   }
   MO.setReg(PhysReg);
-  if (!LRI->Error)
-    MO.setIsRenamable(true);
+  MO.setIsRenamable(!LRI->Error);
 }
 
 /// Variation of defineVirtReg() with special handling for livethrough regs

Original file line number	Diff line number	Diff line change
`@@ -1007,8 +1007,7 @@ void RegAllocFastImpl::allocVirtRegUndef(MachineOperand &MO) {`
`1007`	`1007`	`MO.setSubReg(0);`
`1008`	`1008`	`}`
`1009`	`1009`	`MO.setReg(PhysReg);`
`1010`		`- if (!LRI->Error)`
`1011`		`- MO.setIsRenamable(true);`
	`1010`	`+ MO.setIsRenamable(!LRI->Error);`
`1012`	`1011`	`}`
`1013`	`1012`
`1014`	`1013`	`/// Variation of defineVirtReg() with special handling for livethrough regs`