[asan] revert r175266 as it breaks code with packed structures. supporting long double will require a more general solution

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175442 91177308-0d34-0410-b5e6-96231b3b80d8

Author: kcc

lib/Transforms/Instrumentation/AddressSanitizer.cpp

@@ -639,7 +639,7 @@ void AddressSanitizer::instrumentMop(Instruction *I) {
   Type *OrigTy = cast<PointerType>(OrigPtrTy)->getElementType();
 
   assert(OrigTy->isSized());
-  uint32_t TypeSize = TD->getTypeAllocSizeInBits(OrigTy);
+  uint32_t TypeSize = TD->getTypeStoreSizeInBits(OrigTy);
 
   if (TypeSize != 8  && TypeSize != 16 &&
       TypeSize != 32 && TypeSize != 64 && TypeSize != 128) {

test/Instrumentation/AddressSanitizer/basic.ll

@@ -96,5 +96,5 @@ entry:
 }
 
 ; CHECK: LongDoubleTest
-; CHECK: __asan_report_store16
+; CHECK-NOT: __asan_report_store16
 ; CHECK: ret void