[CodeGen][NPM] Port LiveDebugValues to NPM (#131563)

2 files changed, 48 insertions, 17 deletions

diff --git a/llvm/lib/CodeGen/CodeGen.cpp b/llvm/lib/CodeGen/CodeGen.cpp
index 6da72c8..9544151 100644
--- a/llvm/lib/CodeGen/CodeGen.cpp
+++ b/llvm/lib/CodeGen/CodeGen.cpp
@@ -58,7 +58,7 @@ void llvm::initializeCodeGen(PassRegistry &Registry) {
   initializeInterleavedLoadCombinePass(Registry);
   initializeInterleavedAccessPass(Registry);
   initializeJMCInstrumenterPass(Registry);
-  initializeLiveDebugValuesPass(Registry);
+  initializeLiveDebugValuesLegacyPass(Registry);
   initializeLiveDebugVariablesWrapperLegacyPass(Registry);
   initializeLiveIntervalsWrapperPassPass(Registry);
   initializeLiveRangeShrinkPass(Registry);
diff --git a/llvm/lib/CodeGen/LiveDebugValues/LiveDebugValues.cpp b/llvm/lib/CodeGen/LiveDebugValues/LiveDebugValues.cpp
index 484143a..b655375 100644
--- a/llvm/lib/CodeGen/LiveDebugValues/LiveDebugValues.cpp
+++ b/llvm/lib/CodeGen/LiveDebugValues/LiveDebugValues.cpp
@@ -8,6 +8,7 @@
 
 #include "LiveDebugValues.h"
 
+#include "llvm/CodeGen/LiveDebugValuesPass.h"
 #include "llvm/CodeGen/MachineDominators.h"
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineFunctionPass.h"
@@ -63,50 +64,82 @@ namespace {
 /// Generic LiveDebugValues pass. Calls through to VarLocBasedLDV or
 /// InstrRefBasedLDV to perform location propagation, via the LDVImpl
 /// base class.
-class LiveDebugValues : public MachineFunctionPass {
+class LiveDebugValuesLegacy : public MachineFunctionPass {
 public:
   static char ID;
 
-  LiveDebugValues();
-  ~LiveDebugValues() = default;
+  LiveDebugValuesLegacy();
+  ~LiveDebugValuesLegacy() = default;
 
   /// Calculate the liveness information for the given machine function.
   bool runOnMachineFunction(MachineFunction &MF) override;
 
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.setPreservesCFG();
+    AU.addRequired<TargetPassConfig>();
     MachineFunctionPass::getAnalysisUsage(AU);
   }
+};
+
+struct LiveDebugValues {
+  LiveDebugValues();
+  ~LiveDebugValues() = default;
+  bool run(MachineFunction &MF, bool ShouldEmitDebugEntryValues);
 
 private:
   std::unique_ptr<LDVImpl> InstrRefImpl;
   std::unique_ptr<LDVImpl> VarLocImpl;
-  TargetPassConfig *TPC = nullptr;
   MachineDominatorTree MDT;
 };
 } // namespace
 
-char LiveDebugValues::ID = 0;
+char LiveDebugValuesLegacy::ID = 0;
 
-char &llvm::LiveDebugValuesID = LiveDebugValues::ID;
+char &llvm::LiveDebugValuesID = LiveDebugValuesLegacy::ID;
 
-INITIALIZE_PASS(LiveDebugValues, DEBUG_TYPE, "Live DEBUG_VALUE analysis", false,
-                false)
+INITIALIZE_PASS(LiveDebugValuesLegacy, DEBUG_TYPE, "Live DEBUG_VALUE analysis",
+                false, false)
 
 /// Default construct and initialize the pass.
-LiveDebugValues::LiveDebugValues() : MachineFunctionPass(ID) {
-  initializeLiveDebugValuesPass(*PassRegistry::getPassRegistry());
+LiveDebugValuesLegacy::LiveDebugValuesLegacy() : MachineFunctionPass(ID) {
+  initializeLiveDebugValuesLegacyPass(*PassRegistry::getPassRegistry());
+}
+
+LiveDebugValues::LiveDebugValues() {
   InstrRefImpl =
       std::unique_ptr<LDVImpl>(llvm::makeInstrRefBasedLiveDebugValues());
   VarLocImpl = std::unique_ptr<LDVImpl>(llvm::makeVarLocBasedLiveDebugValues());
 }
 
-bool LiveDebugValues::runOnMachineFunction(MachineFunction &MF) {
+PreservedAnalyses
+LiveDebugValuesPass::run(MachineFunction &MF,
+                         MachineFunctionAnalysisManager &MFAM) {
+  if (!LiveDebugValues().run(MF, ShouldEmitDebugEntryValues))
+    return PreservedAnalyses::all();
+  auto PA = getMachineFunctionPassPreservedAnalyses();
+  PA.preserveSet<CFGAnalyses>();
+  return PA;
+}
+
+void LiveDebugValuesPass::printPipeline(
+    raw_ostream &OS, function_ref<StringRef(StringRef)> MapClassName2PassName) {
+  OS << MapClassName2PassName(name());
+  if (ShouldEmitDebugEntryValues)
+    OS << "<emit-debug-entry-values>";
+}
+
+bool LiveDebugValuesLegacy::runOnMachineFunction(MachineFunction &MF) {
+  auto *TPC = &getAnalysis<TargetPassConfig>();
+  return LiveDebugValues().run(
+      MF, TPC->getTM<TargetMachine>().Options.ShouldEmitDebugEntryValues());
+}
+
+bool LiveDebugValues::run(MachineFunction &MF,
+                          bool ShouldEmitDebugEntryValues) {
   bool InstrRefBased = MF.useDebugInstrRef();
   // Allow the user to force selection of InstrRef LDV.
   InstrRefBased |= ForceInstrRefLDV;
 
-  TPC = getAnalysisIfAvailable<TargetPassConfig>();
   LDVImpl *TheImpl = &*VarLocImpl;
 
   MachineDominatorTree *DomTree = nullptr;
@@ -116,10 +149,8 @@ bool LiveDebugValues::runOnMachineFunction(MachineFunction &MF) {
     TheImpl = &*InstrRefImpl;
   }
 
-  return TheImpl->ExtendRanges(
-      MF, DomTree,
-      TPC->getTM<TargetMachine>().Options.ShouldEmitDebugEntryValues(),
-      InputBBLimit, InputDbgValueLimit);
+  return TheImpl->ExtendRanges(MF, DomTree, ShouldEmitDebugEntryValues,
+                               InputBBLimit, InputDbgValueLimit);
 }
 
 bool llvm::debuginfoShouldUseDebugInstrRef(const Triple &T) {