diff options
author | Kostya Serebryany <kcc@google.com> | 2012-01-24 19:25:38 +0000 |
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committer | Kostya Serebryany <kcc@google.com> | 2012-01-24 19:25:38 +0000 |
commit | 71efba0bbafaefab14419fbd284efff5f7acade7 (patch) | |
tree | 0e1a4b575a21aa22ff23d2e9974809ceaf1e97ca /lib/CodeGen/CodeGenModule.cpp | |
parent | 5d84bb418405e1256020a66895d163756886b102 (diff) |
The following patch adds __attribute__((no_address_safety_analysis)) which will allow to disable
address safety analysis (such as e.g. AddressSanitizer or SAFECode) for a specific function.
When building with AddressSanitizer, add AddressSafety function attribute to every generated function
except for those that have __attribute__((no_address_safety_analysis)).
With this patch we will be able to
1. disable AddressSanitizer for a particular function
2. disable AddressSanitizer-hostile optimizations (such as some cases of load widening) when AddressSanitizer is on.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148842 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/CodeGenModule.cpp')
-rw-r--r-- | lib/CodeGen/CodeGenModule.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp index c54b904abc..67059016f7 100644 --- a/lib/CodeGen/CodeGenModule.cpp +++ b/lib/CodeGen/CodeGenModule.cpp @@ -1019,6 +1019,14 @@ CodeGenModule::GetOrCreateLLVMFunction(StringRef MangledName, if (ExtraAttrs != llvm::Attribute::None) F->addFnAttr(ExtraAttrs); + if (Features.AddressSanitizer) { + // When AddressSanitizer is enabled, set AddressSafety attribute + // unless __attribute__((no_address_safety_analysis)) is used. + const FunctionDecl *FD = cast_or_null<FunctionDecl>(D.getDecl()); + if (!FD || !FD->hasAttr<NoAddressSafetyAnalysisAttr>()) + F->addFnAttr(llvm::Attribute::AddressSafety); + } + // This is the first use or definition of a mangled name. If there is a // deferred decl with this name, remember that we need to emit it at the end // of the file. |