[llvm] f8d008d - [ConstraintElim] Remove legacy pass implementation.

[Florian Hahn via llvm-commits]

Author: Florian Hahn
Date: 2023-01-04T11:21:12Z
New Revision: f8d008d19f3553315ef481844f96249d0cccb1e6

URL: https://github.com/llvm/llvm-project/commit/f8d008d19f3553315ef481844f96249d0cccb1e6
DIFF: https://github.com/llvm/llvm-project/commit/f8d008d19f3553315ef481844f96249d0cccb1e6.diff

LOG: [ConstraintElim] Remove legacy pass implementation.

The pass is exclusively used with the new pass manager now, so remove
the legacy PM implementation.

Added: 
    

Modified: 
    llvm/include/llvm/InitializePasses.h
    llvm/include/llvm/Transforms/Scalar.h
    llvm/lib/Transforms/Scalar/ConstraintElimination.cpp
    llvm/lib/Transforms/Scalar/Scalar.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/include/llvm/InitializePasses.h b/llvm/include/llvm/InitializePasses.h
index 8af87e69b0258..8494692f2a94e 100644
--- a/llvm/include/llvm/InitializePasses.h
+++ b/llvm/include/llvm/InitializePasses.h
@@ -94,7 +94,6 @@ void initializeCodeGenPreparePass(PassRegistry&);
 void initializeComplexDeinterleavingLegacyPassPass(PassRegistry&);
 void initializeConstantHoistingLegacyPassPass(PassRegistry&);
 void initializeConstantMergeLegacyPassPass(PassRegistry&);
-void initializeConstraintEliminationPass(PassRegistry &);
 void initializeCorrelatedValuePropagationPass(PassRegistry&);
 void initializeCostModelAnalysisPass(PassRegistry&);
 void initializeCrossDSOCFIPass(PassRegistry&);

diff  --git a/llvm/include/llvm/Transforms/Scalar.h b/llvm/include/llvm/Transforms/Scalar.h
index 0eebb63ce63fd..3db3e41d241a0 100644
--- a/llvm/include/llvm/Transforms/Scalar.h
+++ b/llvm/include/llvm/Transforms/Scalar.h
@@ -340,13 +340,6 @@ Pass *createLoopDeletionPass();
 //
 FunctionPass *createConstantHoistingPass();
 
-//===----------------------------------------------------------------------===//
-//
-// ConstraintElimination - This pass eliminates conditions based on found
-//                         constraints.
-//
-FunctionPass *createConstraintEliminationPass();
-
 //===----------------------------------------------------------------------===//
 //
 // Sink - Code Sinking

diff  --git a/llvm/lib/Transforms/Scalar/ConstraintElimination.cpp b/llvm/lib/Transforms/Scalar/ConstraintElimination.cpp
index 5dee4d8a40cc4..354796d2f1391 100644
--- a/llvm/lib/Transforms/Scalar/ConstraintElimination.cpp
+++ b/llvm/lib/Transforms/Scalar/ConstraintElimination.cpp
@@ -26,12 +26,10 @@
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/PatternMatch.h"
-#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/DebugCounter.h"
 #include "llvm/Support/MathExtras.h"
-#include "llvm/Transforms/Scalar.h"
 
 #include <cmath>
 #include <string>
@@ -1053,41 +1051,3 @@ PreservedAnalyses ConstraintEliminationPass::run(Function &F,
   PA.preserveSet<CFGAnalyses>();
   return PA;
 }
-
-namespace {
-
-class ConstraintElimination : public FunctionPass {
-public:
-  static char ID;
-
-  ConstraintElimination() : FunctionPass(ID) {
-    initializeConstraintEliminationPass(*PassRegistry::getPassRegistry());
-  }
-
-  bool runOnFunction(Function &F) override {
-    auto &DT = getAnalysis<DominatorTreeWrapperPass>().getDomTree();
-    return eliminateConstraints(F, DT);
-  }
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AU.setPreservesCFG();
-    AU.addRequired<DominatorTreeWrapperPass>();
-    AU.addPreserved<GlobalsAAWrapperPass>();
-    AU.addPreserved<DominatorTreeWrapperPass>();
-  }
-};
-
-} // end anonymous namespace
-
-char ConstraintElimination::ID = 0;
-
-INITIALIZE_PASS_BEGIN(ConstraintElimination, "constraint-elimination",
-                      "Constraint Elimination", false, false)
-INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
-INITIALIZE_PASS_DEPENDENCY(LazyValueInfoWrapperPass)
-INITIALIZE_PASS_END(ConstraintElimination, "constraint-elimination",
-                    "Constraint Elimination", false, false)
-
-FunctionPass *llvm::createConstraintEliminationPass() {
-  return new ConstraintElimination();
-}

diff  --git a/llvm/lib/Transforms/Scalar/Scalar.cpp b/llvm/lib/Transforms/Scalar/Scalar.cpp
index 37153eac477e3..8aee8d140a295 100644
--- a/llvm/lib/Transforms/Scalar/Scalar.cpp
+++ b/llvm/lib/Transforms/Scalar/Scalar.cpp
@@ -35,7 +35,6 @@ void llvm::initializeScalarOpts(PassRegistry &Registry) {
   initializeAlignmentFromAssumptionsPass(Registry);
   initializeCallSiteSplittingLegacyPassPass(Registry);
   initializeConstantHoistingLegacyPassPass(Registry);
-  initializeConstraintEliminationPass(Registry);
   initializeCorrelatedValuePropagationPass(Registry);
   initializeDCELegacyPassPass(Registry);
   initializeDivRemPairsLegacyPassPass(Registry);