| 0f58dbae4ab2397dc310e19d171a4bc60fc6c9a7 |
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08-Feb-2013 |
Bill Schmidt <wschmidt@linux.vnet.ibm.com> |
Refine fix to bug 15041.
Thanks to help from Nadav and Hal, I have a more reasonable (and even
correct!) approach. This specifically penalizes the insertelement
and extractelement operations for the performance hit that will occur
on PowerPC processors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174725 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
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| 8f7dc823bfda3efede14a3cf9c294a2da3ad8777 |
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07-Feb-2013 |
Bill Schmidt <wschmidt@linux.vnet.ibm.com> |
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
/external/llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
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| 395210d15b323aa620059fe362e0f8e5eacc0b05 |
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26-Jan-2013 |
Dmitri Gribenko <gribozavr@gmail.com> |
Remove unused variables, silences -Wunused-variable
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173526 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
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| a8b289b70d5ef416608bb71a874b8b4fe80158e1 |
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26-Jan-2013 |
Hal Finkel <hfinkel@anl.gov> |
Initial implementation of PPCTargetTransformInfo
This provides a place to add customized operation cost information and
control some other target-specific IR-level transformations.
The only non-trivial logic in this checkin assigns a higher cost to
unaligned loads and stores (covered by the included test case).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173520 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
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