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| author | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2011-08-23 01:14:17 +0000 |
|---|---|---|
| committer | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2011-08-23 01:14:17 +0000 |
| commit | 3bde6fe0df05558b89e7edfe48ac05da59beb81a (patch) | |
| tree | 011a10aa34d5fb2d2afa5786803bd3f240a9d2a7 /lib/Target/X86/CMakeLists.txt | |
| parent | 7e99b5c8a36e3e8d611e47122f9c596b58ccf3e8 (diff) | |
| download | llvm-3bde6fe0df05558b89e7edfe48ac05da59beb81a.tar.gz llvm-3bde6fe0df05558b89e7edfe48ac05da59beb81a.tar.bz2 llvm-3bde6fe0df05558b89e7edfe48ac05da59beb81a.tar.xz | |
Introduce a pass to insert vzeroupper instructions to avoid AVX to
SSE transition penalty. The pass is enabled through the "x86-use-vzeroupper"
llc command line option. This is only the first step (very naive and
conservative one) to sketch out the idea, but proper DFA is coming next
to allow smarter decisions. Comments and ideas now and in further commits
will be very appreciated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138317 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/CMakeLists.txt')
| -rw-r--r-- | lib/Target/X86/CMakeLists.txt | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/Target/X86/CMakeLists.txt b/lib/Target/X86/CMakeLists.txt index 1fd55128e2..c481eb9552 100644 --- a/lib/Target/X86/CMakeLists.txt +++ b/lib/Target/X86/CMakeLists.txt @@ -32,6 +32,7 @@ set(sources X86Subtarget.cpp X86TargetMachine.cpp X86TargetObjectFile.cpp + X86VZeroUpper.cpp ) if( CMAKE_CL_64 ) |