[asan] extend the workaround for http://llvm.org/bugs/show_bug.cgi?id=11395: don't instrument the function at all on x86_32 if it has a large asm blob
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147953 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Instrumentation/AddressSanitizer.cpp b/lib/Transforms/Instrumentation/AddressSanitizer.cpp
index dbd9eba..e645a9f 100644
--- a/lib/Transforms/Instrumentation/AddressSanitizer.cpp
+++ b/lib/Transforms/Instrumentation/AddressSanitizer.cpp
@@ -617,6 +617,7 @@
TempsToInstrument.clear();
for (BasicBlock::iterator BI = FI->begin(), BE = FI->end();
BI != BE; ++BI) {
+ if (LooksLikeCodeInBug11395(BI)) return false;
if ((isa<LoadInst>(BI) && ClInstrumentReads) ||
(isa<StoreInst>(BI) && ClInstrumentWrites)) {
Value *Addr = getLDSTOperand(BI);
@@ -792,7 +793,6 @@
BasicBlock &BB = *FI;
for (BasicBlock::iterator BI = BB.begin(), BE = BB.end();
BI != BE; ++BI) {
- if (LooksLikeCodeInBug11395(BI)) return false;
if (isa<ReturnInst>(BI)) {
RetVec.push_back(BI);
continue;