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| author | Bill Schmidt <wschmidt@linux.vnet.ibm.com> | 2013-02-07 20:33:57 +0000 |
|---|---|---|
| committer | Bill Schmidt <wschmidt@linux.vnet.ibm.com> | 2013-02-07 20:33:57 +0000 |
| commit | 8f7dc823bfda3efede14a3cf9c294a2da3ad8777 (patch) | |
| tree | ddaae3b6b4c6acb292464fb12ee9d182d11df94d /lib/ExecutionEngine/OProfileJIT/OProfileWrapper.cpp | |
| parent | 0c66403efdf88ff4f247b6a9f45339bb3a893235 (diff) | |
Constrain PowerPC autovectorization to fix bug 15041.
Certain vector operations don't vectorize well with the current
PowerPC implementation. Element insert/extract performs poorly
without VSX support because Altivec requires going through memory.
SREM, UREM, and VSELECT all produce bad scalar code.
There's a lot of work to do for the cost model before
autovectorization will be tuned well, and this is not an attempt to
address the larger problem.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174660 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/ExecutionEngine/OProfileJIT/OProfileWrapper.cpp')
0 files changed, 0 insertions, 0 deletions