[llvm] Convert as many LivePhysRegs uses to LiveRegUnits (PR #83905)

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git-clang-format --diff bb97c992834a24632629dec4ec79ea7ffd1261fa c93326da64646e66875d7194e7a3790cdbf31fb7 -- llvm/lib/CodeGen/MachineOutliner.cpp llvm/lib/CodeGen/ReachingDefAnalysis.cpp llvm/lib/Target/AArch64/AArch64FrameLowering.cpp llvm/lib/Target/AArch64/AArch64InstrInfo.cpp llvm/lib/Target/AMDGPU/SIOptimizeExecMasking.cpp llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp llvm/lib/Target/ARM/Thumb1FrameLowering.cpp llvm/lib/Target/M68k/M68kInstrInfo.cpp llvm/lib/Target/PowerPC/PPCExpandAtomicPseudoInsts.cpp llvm/lib/Target/PowerPC/PPCFrameLowering.cpp llvm/lib/Target/PowerPC/PPCInstrInfo.cpp llvm/lib/Target/PowerPC/PPCPreEmitPeephole.cpp llvm/lib/Target/X86/X86FrameLowering.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/CodeGen/ReachingDefAnalysis.cpp b/llvm/lib/CodeGen/ReachingDefAnalysis.cpp
index 61c876ed7b..07fa92889d 100644
--- a/llvm/lib/CodeGen/ReachingDefAnalysis.cpp
+++ b/llvm/lib/CodeGen/ReachingDefAnalysis.cpp
@@ -6,10 +6,10 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/ADT/SmallSet.h"
+#include "llvm/CodeGen/ReachingDefAnalysis.h"
 #include "llvm/ADT/SetOperations.h"
+#include "llvm/ADT/SmallSet.h"
 #include "llvm/CodeGen/LiveRegUnits.h"
-#include "llvm/CodeGen/ReachingDefAnalysis.h"
 #include "llvm/CodeGen/TargetRegisterInfo.h"
 #include "llvm/CodeGen/TargetSubtargetInfo.h"
 #include "llvm/Support/Debug.h"

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https://github.com/llvm/llvm-project/pull/83905