commit 4bdc60434c79126b75aee2bb391275f3bb746364
author Alexey Samsonov <samsonov@google.com> Sun Jan 20 13:12:12 2013 +0000
committer Alexey Samsonov <samsonov@google.com> Sun Jan 20 13:12:12 2013 +0000
tree f2931c50070d8b6a1153aae4564d45f112c87acc
parent e6b9d802fb7b16d93474c4f1c179ab36202e8a8b

Add top-level Clang flag -f(no-)sanitize-address-zero-base-shadow that makes AddressSanitizer use bottom of the address space for the shadow memory. On Linux it can be used with -fPIE/-pie to improve performance.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172974 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/BackendUtil.cpp

diff --git a/lib/CodeGen/BackendUtil.cpp b/lib/CodeGen/BackendUtil.cpp
index 8a3ee39..b938aac 100644
--- a/lib/CodeGen/BackendUtil.cpp
+++ b/lib/CodeGen/BackendUtil.cpp
@@ -164,12 +164,16 @@
       static_cast<const PassManagerBuilderWrapper&>(Builder);
   const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts();
   const LangOptions &LangOpts = BuilderWrapper.getLangOpts();
-  PM.add(createAddressSanitizerFunctionPass(LangOpts.Sanitize.InitOrder,
-                                            LangOpts.Sanitize.UseAfterReturn,
-                                            LangOpts.Sanitize.UseAfterScope,
-                                            CGOpts.SanitizerBlacklistFile));
-  PM.add(createAddressSanitizerModulePass(LangOpts.Sanitize.InitOrder,
-                                          CGOpts.SanitizerBlacklistFile));
+  PM.add(createAddressSanitizerFunctionPass(
+      LangOpts.Sanitize.InitOrder,
+      LangOpts.Sanitize.UseAfterReturn,
+      LangOpts.Sanitize.UseAfterScope,
+      CGOpts.SanitizerBlacklistFile,
+      CGOpts.SanitizeAddressZeroBaseShadow));
+  PM.add(createAddressSanitizerModulePass(
+      LangOpts.Sanitize.InitOrder,
+      CGOpts.SanitizerBlacklistFile,
+      CGOpts.SanitizeAddressZeroBaseShadow));
 }
 
 static void addMemorySanitizerPass(const PassManagerBuilder &Builder,
@@ -177,7 +181,7 @@
   const PassManagerBuilderWrapper &BuilderWrapper =
       static_cast<const PassManagerBuilderWrapper&>(Builder);
   const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts();
-  PM.add(createMemorySanitizerPass(CGOpts.MemorySanitizerTrackOrigins,
+  PM.add(createMemorySanitizerPass(CGOpts.SanitizeMemoryTrackOrigins,
                                    CGOpts.SanitizerBlacklistFile));
 }