[llvm] [AMDGPU] GCNRegPressure printing pass for testing. (PR #70031)

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``````````bash
git-clang-format --diff 24f068b0f77e5de1980b71f036f6b83c4d506904 814ccb9546ef681b8f231bb0569eb050b5b72995 -- llvm/lib/Target/AMDGPU/AMDGPU.h llvm/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp llvm/lib/Target/AMDGPU/GCNRegPressure.cpp llvm/lib/Target/AMDGPU/GCNRegPressure.h
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/AMDGPU/GCNRegPressure.cpp b/llvm/lib/Target/AMDGPU/GCNRegPressure.cpp
index d2f8f4cf5dcc..4d5677d9463d 100644
--- a/llvm/lib/Target/AMDGPU/GCNRegPressure.cpp
+++ b/llvm/lib/Target/AMDGPU/GCNRegPressure.cpp
@@ -505,7 +505,7 @@ bool GCNRegPressurePrinter::runOnMachineFunction(MachineFunction &MF) {
 
   const MachineRegisterInfo &MRI = MF.getRegInfo();
   const LiveIntervals &LIS = getAnalysis<LiveIntervals>();
-  
+
   auto &OS = dbgs();
 
 // Leading spaces are important for YAML syntax.
@@ -542,7 +542,7 @@ bool GCNRegPressurePrinter::runOnMachineFunction(MachineFunction &MF) {
 
     GCNRPTracker::LiveRegSet LRAtMBBBegin, LRAtMBBEnd;
     GCNRegPressure RPAtMBBEnd;
-    
+
     if (UseDownwardTracker) {
       GCNDownwardRPTracker RPT(LIS);
       RPT.reset(MBB.instr_front());
@@ -565,7 +565,7 @@ bool GCNRegPressurePrinter::runOnMachineFunction(MachineFunction &MF) {
 
       LRAtMBBEnd = RPT.getLiveRegs();
       RPAtMBBEnd = RPT.getPressure();
-      
+
       for (auto &MI : reverse(MBB)) {
         RPT.recede(MI);
         if (!MI.isDebugInstr())

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https://github.com/llvm/llvm-project/pull/70031