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| author | Evan Cheng <evan.cheng@apple.com> | 2011-05-24 01:48:22 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2011-05-24 01:48:22 +0000 |
| commit | b5a55d979c84e100f383ce11c5c5e3b616b9dcc4 (patch) | |
| tree | 52d1aa5341d7eef05cc952b61bd9fdb68cabad10 /lib/CodeGen/TargetLoweringObjectFileImpl.cpp | |
| parent | 4992b03cbdaad1df46ea771b587f247395e49999 (diff) | |
- Teach SelectionDAG::isKnownNeverZero to return true (op x, c) when c is
non-zero.
- Teach X86 cmov optimization to eliminate the cmov from ctlz, cttz extension
when the source of X86ISD::BSR / X86ISD::BSF is proven to be non-zero.
rdar://9490949
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131948 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/TargetLoweringObjectFileImpl.cpp')
0 files changed, 0 insertions, 0 deletions