[RegAllocFast] Don't convert MCRegUnit to MCRegister. NFC

[topperc]

No description provided.

[llvmbot]

@llvm/pr-subscribers-llvm-regalloc

Author: Craig Topper (topperc)

Changes

---

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

1 Files Affected:

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

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');