Hardware-assisted AddressSanitizer (llvm part).
Summary:
This is LLVM instrumentation for the new HWASan tool. It is basically
a stripped down copy of ASan at this point, w/o stack or global
support. Instrumenation adds a global constructor + runtime callbacks
for every load and store.
HWASan comes with its own IR attribute.
A brief design document can be found in
clang/docs/HardwareAssistedAddressSanitizerDesign.rst (submitted earlier).
Reviewers: kcc, pcc, alekseyshl
Subscribers: srhines, mehdi_amini, mgorny, javed.absar, eraman, llvm-commits, hiraditya
Differential Revision: https://reviews.llvm.org/D40932
llvm-svn: 320217
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp
index 8270f9c..4f7039c6 100644
--- a/llvm/lib/Analysis/ValueTracking.cpp
+++ b/llvm/lib/Analysis/ValueTracking.cpp
@@ -3511,7 +3511,8 @@
// Speculative load may create a race that did not exist in the source.
LI->getFunction()->hasFnAttribute(Attribute::SanitizeThread) ||
// Speculative load may load data from dirty regions.
- LI->getFunction()->hasFnAttribute(Attribute::SanitizeAddress))
+ LI->getFunction()->hasFnAttribute(Attribute::SanitizeAddress) ||
+ LI->getFunction()->hasFnAttribute(Attribute::SanitizeHWAddress))
return false;
const DataLayout &DL = LI->getModule()->getDataLayout();
return isDereferenceableAndAlignedPointer(LI->getPointerOperand(),