[asan] add -asan-coverage=3: instrument all blocks and critical edges.

[oota-llvm.git] / lib / Transforms / Instrumentation / BoundsChecking.cpp

diff --git a/lib/Transforms/Instrumentation/BoundsChecking.cpp b/lib/Transforms/Instrumentation/BoundsChecking.cpp
index fcab822cd2da2d3ec3ecb0d9fe722637d8983a3b..9a5cea81f322a288e27bc9c9d97e1733931df8b3 100644 (file)
--- a/lib/Transforms/Instrumentation/BoundsChecking.cpp
+++ b/lib/Transforms/Instrumentation/BoundsChecking.cpp
@@ -12,7 +12,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-#define DEBUG_TYPE "bounds-checking"
 #include "llvm/Transforms/Instrumentation.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/MemoryBuiltins.h"
@@ -28,6 +27,8 @@
 #include "llvm/Target/TargetLibraryInfo.h"
 using namespace llvm;
 
+#define DEBUG_TYPE "bounds-checking"
+
 static cl::opt<bool> SingleTrapBB("bounds-checking-single-trap",
                                   cl::desc("Use one trap block per function"));
 
@@ -45,9 +46,9 @@ namespace {
       initializeBoundsCheckingPass(*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.addRequired<DataLayoutPass>();
       AU.addRequired<TargetLibraryInfo>();
     }
@@ -61,9 +62,7 @@ namespace {
     BasicBlock *TrapBB;
 
     BasicBlock *getTrapBB();
-    void emitBranchToTrap(Value *Cmp = 0);
-    bool computeAllocSize(Value *Ptr, APInt &Offset, Value* &OffsetValue,
-                          APInt &Size, Value* &SizeValue);
+    void emitBranchToTrap(Value *Cmp = nullptr);
     bool instrument(Value *Ptr, Value *Val);
  };
 }
@@ -105,7 +104,7 @@ void BoundsChecking::emitBranchToTrap(Value *Cmp) {
     if (!C->getZExtValue())
       return;
     else
-      Cmp = 0; // unconditional branch
+      Cmp = nullptr; // unconditional branch
   }
   ++ChecksAdded;
 
@@ -169,7 +168,7 @@ bool BoundsChecking::runOnFunction(Function &F) {
   DL = &getAnalysis<DataLayoutPass>().getDataLayout();
   TLI = &getAnalysis<TargetLibraryInfo>();
 
-  TrapBB = 0;
+  TrapBB = nullptr;
   BuilderTy TheBuilder(F.getContext(), TargetFolder(DL));
   Builder = &TheBuilder;
   ObjectSizeOffsetEvaluator TheObjSizeEval(DL, TLI, F.getContext(),