[lumen] Port PlaceSafepoints pass to new pass manager

Author: bitwalker

llvm/include/llvm/InitializePasses.h

@@ -333,8 +333,8 @@ void initializePatchableFunctionPass(PassRegistry&);
 void initializePeepholeOptimizerPass(PassRegistry&);
 void initializePhiValuesWrapperPassPass(PassRegistry&);
 void initializePhysicalRegisterUsageInfoPass(PassRegistry&);
-void initializePlaceBackedgeSafepointsImplPass(PassRegistry&);
-void initializePlaceSafepointsPass(PassRegistry&);
+void initializePlaceBackedgeSafepointsWrapperPassPass(PassRegistry&);
+void initializePlaceSafepointsLegacyPassPass(PassRegistry&);
 void initializePostDomOnlyPrinterPass(PassRegistry&);
 void initializePostDomOnlyViewerPass(PassRegistry&);
 void initializePostDomPrinterPass(PassRegistry&);

llvm/include/llvm/Transforms/Scalar.h

@@ -455,7 +455,7 @@ FunctionPass *createStraightLineStrengthReducePass();
 // RewriteStatepointsForGC which can be run at an arbitrary point in the pass
 // order following this pass.
 //
-FunctionPass *createPlaceSafepointsPass();
+FunctionPass *createPlaceSafepointsLegacyPass();
 
 //===----------------------------------------------------------------------===//
 //

llvm/include/llvm/Transforms/Scalar/PlaceSafepoints.h

@@ -0,0 +1,37 @@
+//===- PlaceSafepoints.h - ------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file provides interface to "PlaceSafepoints" pass.
+//
+// Place garbage collection safepoints at appropriate locations in the IR. This
+// does not make relocation semantics or variable liveness explicit.  That's
+// done by RewriteStatepointsForGC.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_SCALAR_PLACE_SAFEPOINTS_H
+#define LLVM_TRANSFORMS_SCALAR_PLACE_SAFEPOINTS_H
+
+#include "llvm/IR/PassManager.h"
+
+namespace llvm {
+
+class DominatorTree;
+class Function;
+class Instruction;
+class TargetLibraryInfo;
+
+struct PlaceSafepoints : public PassInfoMixin<PlaceSafepoints> {
+  PreservedAnalyses run(Function &F, FunctionAnalysisManager &FAM);
+
+  bool runOnFunction(Function &F, DominatorTree &DT, const TargetLibraryInfo &, std::vector<Instruction *> &);
+};
+
+} // namespace llvm
+
+#endif // LLVM_TRANSFORMS_SCALAR_PLACE_SAFEPOINTS_H