[llvm] [RegAllocFast] Don't convert MCRegUnit to MCRegister. NFC (PR #123705)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-regalloc

Author: Craig Topper (topperc)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/123705.diff


1 Files Affected:

- (modified) llvm/lib/CodeGen/RegAllocFast.cpp (+2-2) 


``````````diff
diff --git a/llvm/lib/CodeGen/RegAllocFast.cpp b/llvm/lib/CodeGen/RegAllocFast.cpp
index 3863ca80bb44e9..2efccc155d4001 100644
--- a/llvm/lib/CodeGen/RegAllocFast.cpp
+++ b/llvm/lib/CodeGen/RegAllocFast.cpp
@@ -688,7 +688,7 @@ void RegAllocFastImpl::reloadAtBegin(MachineBasicBlock &MBB) {
     if (PhysReg == 0 || LR.Error)
       continue;
 
-    MCRegister FirstUnit = *TRI->regunits(PhysReg).begin();
+    MCRegUnit FirstUnit = *TRI->regunits(PhysReg).begin();
     if (RegUnitStates[FirstUnit] == regLiveIn)
       continue;
 
@@ -758,7 +758,7 @@ bool RegAllocFastImpl::displacePhysReg(MachineInstr &MI, MCPhysReg PhysReg) {
 void RegAllocFastImpl::freePhysReg(MCPhysReg PhysReg) {
   LLVM_DEBUG(dbgs() << "Freeing " << printReg(PhysReg, TRI) << ':');
 
-  MCRegister FirstUnit = *TRI->regunits(PhysReg).begin();
+  MCRegUnit FirstUnit = *TRI->regunits(PhysReg).begin();
   switch (unsigned VirtReg = RegUnitStates[FirstUnit]) {
   case regFree:
     LLVM_DEBUG(dbgs() << '\n');

``````````

</details>


https://github.com/llvm/llvm-project/pull/123705