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[dfsan] Add "DataFlow" option to LLVM_USE_SANITIZER

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Summary:
This patch add the dataflow option to LLVM_USE_SANITIZER and documents
it.

Tested via check-cxx (wip to fix the errors).

Reviewers: morehouse, #libc!

Subscribers: mgorny, cfe-commits, libcxx-commits

Tags: #clang, #libc

Differential Revision: https://reviews.llvm.org/D78390
This commit is contained in:
Zola Bridges 2020-04-17 10:15:58 -07:00
parent 0eeae87b18
commit 0bc062586e
2 changed files with 3 additions and 1 deletions
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2
cmake/modules/HandleLLVMOptions.cmake
View File

@ -728,6 +728,8 @@ if(LLVM_USE_SANITIZER)
elseif (LLVM_USE_SANITIZER STREQUAL "Thread")
append_common_sanitizer_flags()
append("-fsanitize=thread" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
elseif (LLVM_USE_SANITIZER STREQUAL "DataFlow")
append("-fsanitize=dataflow" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
elseif (LLVM_USE_SANITIZER STREQUAL "Address;Undefined" OR
LLVM_USE_SANITIZER STREQUAL "Undefined;Address")
append_common_sanitizer_flags()

2
docs/CMake.rst
View File

@ -422,7 +422,7 @@ LLVM-specific variables
**LLVM_USE_SANITIZER**:STRING
Define the sanitizer used to build LLVM binaries and tests. Possible values
are ``Address``, ``Memory``, ``MemoryWithOrigins``, ``Undefined``, ``Thread``,
and ``Address;Undefined``. Defaults to empty string.
``DataFlow``, and ``Address;Undefined``. Defaults to empty string.
**LLVM_ENABLE_LTO**:STRING
Add ``-flto`` or ``-flto=`` flags to the compile and link command