diff options
Diffstat (limited to 'lib/Transforms/Scalar/ADCE.cpp')
-rw-r--r-- | lib/Transforms/Scalar/ADCE.cpp | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/lib/Transforms/Scalar/ADCE.cpp b/lib/Transforms/Scalar/ADCE.cpp index a3eb07a9f6d6..1a3a4aadce6a 100644 --- a/lib/Transforms/Scalar/ADCE.cpp +++ b/lib/Transforms/Scalar/ADCE.cpp @@ -14,20 +14,21 @@ // //===----------------------------------------------------------------------===// -#define DEBUG_TYPE "adce" #include "llvm/Transforms/Scalar.h" #include "llvm/ADT/DepthFirstIterator.h" #include "llvm/ADT/SmallPtrSet.h" #include "llvm/ADT/SmallVector.h" #include "llvm/ADT/Statistic.h" #include "llvm/IR/BasicBlock.h" +#include "llvm/IR/CFG.h" +#include "llvm/IR/InstIterator.h" #include "llvm/IR/Instructions.h" #include "llvm/IR/IntrinsicInst.h" #include "llvm/Pass.h" -#include "llvm/Support/CFG.h" -#include "llvm/Support/InstIterator.h" using namespace llvm; +#define DEBUG_TYPE "adce" + STATISTIC(NumRemoved, "Number of instructions removed"); namespace { @@ -37,9 +38,9 @@ namespace { initializeADCEPass(*PassRegistry::getPassRegistry()); } - virtual bool runOnFunction(Function& F); + bool runOnFunction(Function& F) override; - virtual void getAnalysisUsage(AnalysisUsage& AU) const { + void getAnalysisUsage(AnalysisUsage& AU) const override { AU.setPreservesCFG(); } @@ -50,6 +51,9 @@ char ADCE::ID = 0; INITIALIZE_PASS(ADCE, "adce", "Aggressive Dead Code Elimination", false, false) bool ADCE::runOnFunction(Function& F) { + if (skipOptnoneFunction(F)) + return false; + SmallPtrSet<Instruction*, 128> alive; SmallVector<Instruction*, 128> worklist; |