From 687d0781926e996d51fc7cd11e3b03d1cb9f6b1b Mon Sep 17 00:00:00 2001
From: Kostya Serebryany <kcc@google.com>
Date: Wed, 11 Jan 2012 18:15:23 +0000
Subject: [PATCH] [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

llvm-svn: 147953
---
 llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
index dbd9ebaf55cc..e645a9fdbddf 100644
--- a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
@@ -617,6 +617,7 @@ bool AddressSanitizer::handleFunction(Module &M, Function &F) {
     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 @@ bool AddressSanitizer::poisonStackInFunction(Module &M, Function &F) {
     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;