[CalcSpillWeights] Use Register. NFC

topperc · topperc · commit 9f8e148a6cdc · 2025-03-02T23:46:17.000-08:00
diff --git a/llvm/include/llvm/CodeGen/CalcSpillWeights.h b/llvm/include/llvm/CodeGen/CalcSpillWeights.h
@@ -73,7 +73,7 @@ class VirtRegMap;
 
     /// Return the preferred allocation register for reg, given a COPY
     /// instruction.
-    static Register copyHint(const MachineInstr *MI, unsigned Reg,
+    static Register copyHint(const MachineInstr *MI, Register Reg,
                              const TargetRegisterInfo &TRI,
                              const MachineRegisterInfo &MRI);
 
diff --git a/llvm/lib/CodeGen/CalcSpillWeights.cpp b/llvm/lib/CodeGen/CalcSpillWeights.cpp
@@ -44,7 +44,7 @@ void VirtRegAuxInfo::calculateSpillWeightsAndHints() {
 }
 
 // Return the preferred allocation register for reg, given a COPY instruction.
-Register VirtRegAuxInfo::copyHint(const MachineInstr *MI, unsigned Reg,
+Register VirtRegAuxInfo::copyHint(const MachineInstr *MI, Register Reg,
                                   const TargetRegisterInfo &TRI,
                                   const MachineRegisterInfo &MRI) {
   unsigned Sub, HSub;
@@ -74,7 +74,7 @@ Register VirtRegAuxInfo::copyHint(const MachineInstr *MI, unsigned Reg,
   if (Sub)
     return TRI.getMatchingSuperReg(CopiedPReg, Sub, RC);
 
-  return 0;
+  return Register();
 }
 
 // Check if all values in LI are rematerializable

Original file line number	Diff line number	Diff line change
`@@ -44,7 +44,7 @@ void VirtRegAuxInfo::calculateSpillWeightsAndHints() {`
`44`	`44`	`}`
`45`	`45`
`46`	`46`	`// Return the preferred allocation register for reg, given a COPY instruction.`
`47`		`-Register VirtRegAuxInfo::copyHint(const MachineInstr *MI, unsigned Reg,`
	`47`	`+Register VirtRegAuxInfo::copyHint(const MachineInstr *MI, Register Reg,`
`48`	`48`	`const TargetRegisterInfo &TRI,`
`49`	`49`	`const MachineRegisterInfo &MRI) {`
`50`	`50`	`unsigned Sub, HSub;`
`@@ -74,7 +74,7 @@ Register VirtRegAuxInfo::copyHint(const MachineInstr *MI, unsigned Reg,`
`74`	`74`	`if (Sub)`
`75`	`75`	`return TRI.getMatchingSuperReg(CopiedPReg, Sub, RC);`
`76`	`76`
`77`		`- return 0;`
	`77`	`+ return Register();`
`78`	`78`	`}`
`79`	`79`
`80`	`80`	`// Check if all values in LI are rematerializable`