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Add an explicit insert point argument to SplitBlockAndInsertIfThen.

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Currently SplitBlockAndInsertIfThen requires that branch condition is an
Instruction itself, which is very inconvenient, because it is sometimes an
Operator, or even a Constant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197677 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evgeniy Stepanov
2013-12-19 13:29:56 +00:00
parent e493a9976c
commit a7eb2b83ba
6 changed files with 62 additions and 42 deletions
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10
lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
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@@ -735,10 +735,9 @@ bool DataFlowSanitizer::runOnModule(Module &M) {
while (isa<PHINode>(Pos) || isa<AllocaInst>(Pos))
Pos = Pos->getNextNode();
IRBuilder<> IRB(Pos);
Instruction *NeInst = cast<Instruction>(
IRB.CreateICmpNE(*i, DFSF.DFS.ZeroShadow));
Value *Ne = IRB.CreateICmpNE(*i, DFSF.DFS.ZeroShadow);
BranchInst *BI = cast<BranchInst>(SplitBlockAndInsertIfThen(
NeInst, /*Unreachable=*/ false, ColdCallWeights));
Ne, Pos, /*Unreachable=*/false, ColdCallWeights));
IRBuilder<> ThenIRB(BI);
ThenIRB.CreateCall(DFSF.DFS.DFSanNonzeroLabelFn);
}
@@ -838,10 +837,9 @@ Value *DataFlowSanitizer::combineShadows(Value *V1, Value *V2,
IRBuilder<> IRB(Pos);
BasicBlock *Head = Pos->getParent();
Value *Ne = IRB.CreateICmpNE(V1, V2);
Instruction *NeInst = dyn_cast<Instruction>(Ne);
if (NeInst) {
if (Ne) {
BranchInst *BI = cast<BranchInst>(SplitBlockAndInsertIfThen(
NeInst, /*Unreachable=*/ false, ColdCallWeights));
Ne, Pos, /*Unreachable=*/false, ColdCallWeights));
IRBuilder<> ThenIRB(BI);
CallInst *Call = ThenIRB.CreateCall2(DFSanUnionFn, V1, V2);
Call->addAttribute(AttributeSet::ReturnIndex, Attribute::ZExt);