vendor/llvm/llvm-release_350-r216957

1 files changed, 12 insertions, 6 deletions

diff --git a/lib/Transforms/Scalar/DCE.cpp b/lib/Transforms/Scalar/DCE.cpp
index e8a090af40c3..99fac751df8e 100644
--- a/lib/Transforms/Scalar/DCE.cpp
+++ b/lib/Transforms/Scalar/DCE.cpp
@@ -16,16 +16,17 @@
 //
 //===----------------------------------------------------------------------===//
 
-#define DEBUG_TYPE "dce"
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/ADT/Statistic.h"
+#include "llvm/IR/InstIterator.h"
 #include "llvm/IR/Instruction.h"
 #include "llvm/Pass.h"
-#include "llvm/Support/InstIterator.h"
 #include "llvm/Target/TargetLibraryInfo.h"
 #include "llvm/Transforms/Utils/Local.h"
 using namespace llvm;
 
+#define DEBUG_TYPE "dce"
+
 STATISTIC(DIEEliminated, "Number of insts removed by DIE pass");
 STATISTIC(DCEEliminated, "Number of insts removed");
 
@@ -38,7 +39,9 @@ namespace {
     DeadInstElimination() : BasicBlockPass(ID) {
       initializeDeadInstEliminationPass(*PassRegistry::getPassRegistry());
     }
-    virtual bool runOnBasicBlock(BasicBlock &BB) {
+    bool runOnBasicBlock(BasicBlock &BB) override {
+      if (skipOptnoneFunction(BB))
+        return false;
       TargetLibraryInfo *TLI = getAnalysisIfAvailable<TargetLibraryInfo>();
       bool Changed = false;
       for (BasicBlock::iterator DI = BB.begin(); DI != BB.end(); ) {
@@ -52,7 +55,7 @@ namespace {
       return Changed;
     }
 
-    virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+    void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.setPreservesCFG();
     }
   };
@@ -77,9 +80,9 @@ namespace {
       initializeDCEPass(*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();
     }
  };
@@ -89,6 +92,9 @@ char DCE::ID = 0;
 INITIALIZE_PASS(DCE, "dce", "Dead Code Elimination", false, false)
 
 bool DCE::runOnFunction(Function &F) {
+  if (skipOptnoneFunction(F))
+    return false;
+
   TargetLibraryInfo *TLI = getAnalysisIfAvailable<TargetLibraryInfo>();
 
   // Start out with all of the instructions in the worklist...