AttributeSet ReadOnlyNoneAttrs;
Value *getShadowAddress(Value *Addr, Instruction *Pos);
- Value *combineShadows(Value *V1, Value *V2, Instruction *Pos);
bool isInstrumented(const Function *F);
bool isInstrumented(const GlobalAlias *GA);
FunctionType *getArgsFunctionType(FunctionType *T);
Value *getRetvalTLS();
Value *getShadow(Value *V);
void setShadow(Instruction *I, Value *Shadow);
+ Value *combineShadows(Value *V1, Value *V2, Instruction *Pos);
Value *combineOperandShadows(Instruction *Inst);
Value *loadShadow(Value *ShadowAddr, uint64_t Size, uint64_t Align,
Instruction *Pos);
// Generates IR to compute the union of the two given shadows, inserting it
// before Pos. Returns the computed union Value.
-Value *DataFlowSanitizer::combineShadows(Value *V1, Value *V2,
- Instruction *Pos) {
- if (V1 == ZeroShadow)
+Value *DFSanFunction::combineShadows(Value *V1, Value *V2, Instruction *Pos) {
+ if (V1 == DFS.ZeroShadow)
return V2;
- if (V2 == ZeroShadow)
+ if (V2 == DFS.ZeroShadow)
return V1;
if (V1 == V2)
return V1;
BasicBlock *Head = Pos->getParent();
Value *Ne = IRB.CreateICmpNE(V1, V2);
BranchInst *BI = cast<BranchInst>(SplitBlockAndInsertIfThen(
- Ne, Pos, /*Unreachable=*/false, ColdCallWeights));
+ Ne, Pos, /*Unreachable=*/false, DFS.ColdCallWeights, &DT));
IRBuilder<> ThenIRB(BI);
- CallInst *Call = ThenIRB.CreateCall2(DFSanUnionFn, V1, V2);
+ CallInst *Call = ThenIRB.CreateCall2(DFS.DFSanUnionFn, V1, V2);
Call->addAttribute(AttributeSet::ReturnIndex, Attribute::ZExt);
Call->addAttribute(1, Attribute::ZExt);
Call->addAttribute(2, Attribute::ZExt);
BasicBlock *Tail = BI->getSuccessor(0);
- PHINode *Phi = PHINode::Create(ShadowTy, 2, "", Tail->begin());
+ PHINode *Phi = PHINode::Create(DFS.ShadowTy, 2, "", Tail->begin());
Phi->addIncoming(Call, Call->getParent());
Phi->addIncoming(V1, Head);
return Phi;
Value *Shadow = getShadow(Inst->getOperand(0));
for (unsigned i = 1, n = Inst->getNumOperands(); i != n; ++i) {
- Shadow = DFS.combineShadows(Shadow, getShadow(Inst->getOperand(i)), Inst);
+ Shadow = combineShadows(Shadow, getShadow(Inst->getOperand(i)), Inst);
}
return Shadow;
}
IRBuilder<> IRB(Pos);
Value *ShadowAddr1 =
IRB.CreateGEP(ShadowAddr, ConstantInt::get(DFS.IntptrTy, 1));
- return DFS.combineShadows(IRB.CreateAlignedLoad(ShadowAddr, ShadowAlign),
- IRB.CreateAlignedLoad(ShadowAddr1, ShadowAlign),
- Pos);
+ return combineShadows(IRB.CreateAlignedLoad(ShadowAddr, ShadowAlign),
+ IRB.CreateAlignedLoad(ShadowAddr1, ShadowAlign), Pos);
}
}
if (Size % (64 / DFS.ShadowWidth) == 0) {
Value *Shadow = DFSF.loadShadow(LI.getPointerOperand(), Size, Align, &LI);
if (ClCombinePointerLabelsOnLoad) {
Value *PtrShadow = DFSF.getShadow(LI.getPointerOperand());
- Shadow = DFSF.DFS.combineShadows(Shadow, PtrShadow, &LI);
+ Shadow = DFSF.combineShadows(Shadow, PtrShadow, &LI);
}
if (Shadow != DFSF.DFS.ZeroShadow)
DFSF.NonZeroChecks.insert(Shadow);
Value* Shadow = DFSF.getShadow(SI.getValueOperand());
if (ClCombinePointerLabelsOnStore) {
Value *PtrShadow = DFSF.getShadow(SI.getPointerOperand());
- Shadow = DFSF.DFS.combineShadows(Shadow, PtrShadow, &SI);
+ Shadow = DFSF.combineShadows(Shadow, PtrShadow, &SI);
}
DFSF.storeShadow(SI.getPointerOperand(), Size, Align, Shadow, &SI);
}
if (isa<VectorType>(I.getCondition()->getType())) {
DFSF.setShadow(
- &I, DFSF.DFS.combineShadows(
- CondShadow,
- DFSF.DFS.combineShadows(TrueShadow, FalseShadow, &I), &I));
+ &I,
+ DFSF.combineShadows(
+ CondShadow, DFSF.combineShadows(TrueShadow, FalseShadow, &I), &I));
} else {
Value *ShadowSel;
if (TrueShadow == FalseShadow) {
ShadowSel =
SelectInst::Create(I.getCondition(), TrueShadow, FalseShadow, "", &I);
}
- DFSF.setShadow(&I, DFSF.DFS.combineShadows(CondShadow, ShadowSel, &I));
+ DFSF.setShadow(&I, DFSF.combineShadows(CondShadow, ShadowSel, &I));
}
}