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[tsan] fix PR18146: sometimes a variable written into vptr could have an integer type (after other optimizations)

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196507 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kostya Serebryany
2013-12-05 15:03:02 +00:00
parent 7add5421a6
commit 64abf5b441
2 changed files with 13 additions and 1 deletions
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4
lib/Transforms/Instrumentation/ThreadSanitizer.cpp
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@@ -408,10 +408,12 @@ bool ThreadSanitizer::instrumentLoadOrStore(Instruction *I) {
if (isa<VectorType>(StoredValue->getType()))
StoredValue = IRB.CreateExtractElement(
StoredValue, ConstantInt::get(IRB.getInt32Ty(), 0));
if (StoredValue->getType()->isIntegerTy())
StoredValue = IRB.CreateIntToPtr(StoredValue, IRB.getInt8PtrTy());
// Call TsanVptrUpdate.
IRB.CreateCall2(TsanVptrUpdate,
IRB.CreatePointerCast(Addr, IRB.getInt8PtrTy()),
IRB.CreateBitCast(StoredValue, IRB.getInt8PtrTy()));
IRB.CreatePointerCast(StoredValue, IRB.getInt8PtrTy()));
NumInstrumentedVtableWrites++;
return true;
}