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[asan] do not treat inline asm calls as indirect calls 

llvm-svn: 220985
This commit is contained in:
Kostya Serebryany 2014-10-31 18:38:23 +00:00
parent e9ab42df0c
commit ea48bdc702
2 changed files with 4 additions and 1 deletions
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4
llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
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@ -1408,12 +1408,14 @@ void AddressSanitizer::InjectCoverageForIndirectCalls(
for (auto I : IndirCalls) {
IRBuilder<> IRB(I);
CallSite CS(I);
Value *Callee = CS.getCalledValue();
if (dyn_cast<InlineAsm>(Callee)) continue;
GlobalVariable *CalleeCache = new GlobalVariable(
*F.getParent(), Ty, false, GlobalValue::PrivateLinkage,
Constant::getNullValue(Ty), "__asan_gen_callee_cache");
CalleeCache->setAlignment(kCacheAlignment);
IRB.CreateCall2(AsanCovIndirCallFunction,
IRB.CreatePointerCast(CS.getCalledValue(), IntptrTy),
IRB.CreatePointerCast(Callee, IntptrTy),
IRB.CreatePointerCast(CalleeCache, IntptrTy));
}
}

1
llvm/test/Instrumentation/AddressSanitizer/coverage.ll
View File

@ -79,6 +79,7 @@ entry:
%1 = load void (%struct.StructWithVptr*)** %vtable, align 8
tail call void %1(%struct.StructWithVptr* %foo)
tail call void %1(%struct.StructWithVptr* %foo)
tail call void asm sideeffect "", ""()
ret void
}