From: Kostya Serebryany <kcc@google.com>
Date: Wed, 11 Jan 2012 18:15:23 +0000 (+0000)
Subject: [asan] extend the workaround for http://llvm.org/bugs/show_bug.cgi?id=11395: don... 
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=bcb55ce3862bbbedac4e09d7099c9e0efc434e4b;p=oota-llvm.git

[asan] extend the workaround for 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 dbd9ebaf55c..e645a9fdbdd 100644
--- a/lib/Transforms/Instrumentation/AddressSanitizer.cpp
+++ b/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;