[llvm] add register logging (PR #137664)

[via llvm-commits]

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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``````````bash
git-clang-format --diff HEAD~1 HEAD --extensions cpp,h -- llvm/lib/Target/NVPTX/NVPTXRegCount.cpp llvm/lib/Target/NVPTX/NVPTX.h llvm/lib/Target/NVPTX/NVPTXTargetMachine.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/NVPTX/NVPTXRegCount.cpp b/llvm/lib/Target/NVPTX/NVPTXRegCount.cpp
index 5caf934ed..6306d775b 100644
--- a/llvm/lib/Target/NVPTX/NVPTXRegCount.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXRegCount.cpp
@@ -10,8 +10,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "NVPTXISelDAGToDAG.h"
 #include "NVPTX.h"
+#include "NVPTXISelDAGToDAG.h"
 #include "NVPTXUtilities.h"
 #include "llvm/ADT/APInt.h"
 #include "llvm/Analysis/ValueTracking.h"
@@ -31,34 +31,34 @@ using namespace llvm;
 
 namespace {
 class NVPTXRegCountPass : public MachineFunctionPass {
-    public:
-      static char ID;
-      NVPTXRegCountPass() : MachineFunctionPass(ID) {}
-    
-      bool runOnMachineFunction(MachineFunction &MF) override {
-        unsigned maxRegs = 0;
-        for (const MachineBasicBlock &MBB : MF) {
-          unsigned liveRegs = 0;
-          for (const MachineInstr &MI : MBB) {
-            // Count unique virtual and physical registers
-            for (const MachineOperand &MO : MI.operands()) {
-              if (MO.isReg() && MO.getReg())
-                liveRegs++;
-            }
-          }
-          maxRegs = std::max(maxRegs, liveRegs);
+public:
+  static char ID;
+  NVPTXRegCountPass() : MachineFunctionPass(ID) {}
+
+  bool runOnMachineFunction(MachineFunction &MF) override {
+    unsigned maxRegs = 0;
+    for (const MachineBasicBlock &MBB : MF) {
+      unsigned liveRegs = 0;
+      for (const MachineInstr &MI : MBB) {
+        // Count unique virtual and physical registers
+        for (const MachineOperand &MO : MI.operands()) {
+          if (MO.isReg() && MO.getReg())
+            liveRegs++;
         }
-        errs() << "Function " << MF.getName() << " uses maximum of " 
-               << maxRegs << " registers\n";
-        return false;
       }
-    };
+      maxRegs = std::max(maxRegs, liveRegs);
+    }
+    errs() << "Function " << MF.getName() << " uses maximum of " << maxRegs
+           << " registers\n";
+    return false;
+  }
+};
 } // namespace
 
 char NVPTXRegCountPass::ID = 0;
 // INITIALIZE_PASS(NVPTXRegCountPass, "nvptx-count-reg",
 //     "NVPTX count reg", false, false)
 
-    FunctionPass *llvm::createNVPTXRegCountPass() {
-      return new NVPTXRegCountPass();
-    }
\ No newline at end of file
+FunctionPass *llvm::createNVPTXRegCountPass() {
+  return new NVPTXRegCountPass();
+}
\ No newline at end of file
diff --git a/llvm/lib/Target/NVPTX/NVPTXTargetMachine.cpp b/llvm/lib/Target/NVPTX/NVPTXTargetMachine.cpp
index da6ef5a99..bb7d62922 100644
--- a/llvm/lib/Target/NVPTX/NVPTXTargetMachine.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXTargetMachine.cpp
@@ -239,13 +239,16 @@ void NVPTXTargetMachine::registerDefaultAliasAnalyses(AAManager &AAM) {
 struct NVPTXModulePrinter : public PassInfoMixin<NVPTXModulePrinter> {
   PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM) {
     std::error_code EC;
-    raw_fd_ostream OutFile("/home/ubuntu/modular/delete-me-test_batch_kv_cache_flash_attention_causal_mask_ragged_paged.ll", EC);
+    raw_fd_ostream OutFile("/home/ubuntu/modular/"
+                           "delete-me-test_batch_kv_cache_flash_attention_"
+                           "causal_mask_ragged_paged.ll",
+                           EC);
     if (!EC) {
       M.print(OutFile, nullptr);
     }
     return PreservedAnalyses::all();
   }
-  
+
   static bool isRequired() { return true; }
 };
 
@@ -266,7 +269,7 @@ void NVPTXTargetMachine::registerPassBuilderCallbacks(PassBuilder &PB) {
         FPM.addPass(NVVMIntrRangePass());
         if (EarlyByValArgsCopy)
           FPM.addPass(NVPTXCopyByValArgsPass());
-        //PM.addPass(NVPTXModulePrinter());
+        // PM.addPass(NVPTXModulePrinter());
         PM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
       });
 

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https://github.com/llvm/llvm-project/pull/137664