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| author | Alexander Potapenko <glider@google.com> | 2013-03-29 09:44:11 +0000 |
|---|---|---|
| committer | Alexander Potapenko <glider@google.com> | 2013-03-29 09:44:11 +0000 |
| commit | b042555cd3d30be2549db4e4a0ec2cf2aaacc1ea (patch) | |
| tree | 3cf19b9dae4f5a0e150a289aec4e6ba39fe65b2a | |
| parent | 389b45061f2a41ccbcf51cff043d4ac16c2d30a3 (diff) | |
| download | bcm5719-llvm-b042555cd3d30be2549db4e4a0ec2cf2aaacc1ea.tar.gz bcm5719-llvm-b042555cd3d30be2549db4e4a0ec2cf2aaacc1ea.zip | |
[TSan] Build TSan runtime with -fPIE.
This removes all register spills from the performance-critical __tsan_{read,write}{1,2,4,8} functions when the host compiler is GCC.
llvm-svn: 178340
| -rw-r--r-- | compiler-rt/lib/tsan/CMakeLists.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler-rt/lib/tsan/CMakeLists.txt b/compiler-rt/lib/tsan/CMakeLists.txt index ef4b6102e55..28288956750 100644 --- a/compiler-rt/lib/tsan/CMakeLists.txt +++ b/compiler-rt/lib/tsan/CMakeLists.txt @@ -2,8 +2,11 @@ include_directories(..) +# SANITIZER_COMMON_CFLAGS contains -fPIC, but it's performance-critical for +# TSan runtime to be built with -fPIE to reduce the number of register spills. set(TSAN_CFLAGS ${SANITIZER_COMMON_CFLAGS} + -fPIE -fno-rtti) # FIXME: Add support for compile flags: # -Wframe-larger-than=512, |
