[llvm] r243684 - Enable dfsan for aarch64

[Adhemerval Zanella]

Author: azanella
Date: Thu Jul 30 15:49:35 2015
New Revision: 243684

URL: http://llvm.org/viewvc/llvm-project?rev=243684&view=rev
Log:
Enable dfsan for aarch64

This patch enable DFSan memory transformation for aarch64 (39-bit VMA).

Modified:
    llvm/trunk/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp

Modified: llvm/trunk/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp?rev=243684&r1=243683&r2=243684&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp (original)
+++ llvm/trunk/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp Thu Jul 30 15:49:35 2015
@@ -420,6 +420,8 @@ bool DataFlowSanitizer::doInitialization
   bool IsX86_64 = TargetTriple.getArch() == llvm::Triple::x86_64;
   bool IsMIPS64 = TargetTriple.getArch() == llvm::Triple::mips64 ||
                   TargetTriple.getArch() == llvm::Triple::mips64el;
+  bool IsAArch64 = TargetTriple.getArch() == llvm::Triple::aarch64 ||
+                   TargetTriple.getArch() == llvm::Triple::aarch64_be;
 
   const DataLayout &DL = M.getDataLayout();
 
@@ -434,6 +436,8 @@ bool DataFlowSanitizer::doInitialization
     ShadowPtrMask = ConstantInt::getSigned(IntptrTy, ~0x700000000000LL);
   else if (IsMIPS64)
     ShadowPtrMask = ConstantInt::getSigned(IntptrTy, ~0xF000000000LL);
+  else if (IsAArch64)
+    ShadowPtrMask = ConstantInt::getSigned(IntptrTy, ~0x7800000000LL);
   else
     report_fatal_error("unsupported triple");