[llvm] r220985 - [asan] do not treat inline asm calls as indirect calls

[Kostya Serebryany]

Author: kcc
Date: Fri Oct 31 13:38:23 2014
New Revision: 220985

URL: http://llvm.org/viewvc/llvm-project?rev=220985&view=rev
Log:
[asan] do not treat inline asm calls as indirect calls

Modified:
    llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp
    llvm/trunk/test/Instrumentation/AddressSanitizer/coverage.ll

Modified: llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp?rev=220985&r1=220984&r2=220985&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp (original)
+++ llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp Fri Oct 31 13:38:23 2014
@@ -1408,12 +1408,14 @@ void AddressSanitizer::InjectCoverageFor
   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));
   }
 }

Modified: llvm/trunk/test/Instrumentation/AddressSanitizer/coverage.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Instrumentation/AddressSanitizer/coverage.ll?rev=220985&r1=220984&r2=220985&view=diff
==============================================================================
--- llvm/trunk/test/Instrumentation/AddressSanitizer/coverage.ll (original)
+++ llvm/trunk/test/Instrumentation/AddressSanitizer/coverage.ll Fri Oct 31 13:38:23 2014
@@ -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
 }