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| author | Craig Topper <craig.topper@intel.com> | 2018-12-26 21:59:48 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@intel.com> | 2018-12-26 21:59:48 +0000 |
| commit | c9a6000755b46ecee5199ae52c89a6b537f1520c (patch) | |
| tree | ff5e9dae4c73fda7b796ad333953031bf2971d87 /llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp | |
| parent | c168c6f86f811327488b58f7e2cc9826801a0155 (diff) | |
| download | llvm-c9a6000755b46ecee5199ae52c89a6b537f1520c.zip llvm-c9a6000755b46ecee5199ae52c89a6b537f1520c.tar.gz llvm-c9a6000755b46ecee5199ae52c89a6b537f1520c.tar.bz2 | |
[LoopIdiomRecognize] Add CTTZ support
Summary:
Existing LIR recognizes CTLZ where shifting input variable right until it is zero. (Shift-Until-Zero idiom)
This commit:
1. Augments Shift-Until-Zero idiom to recognize CTTZ where input variable is shifted left.
2. Prepare for BitScan idiom recognition.
Patch by Yuanfang Chen (tabloid.adroit)
Reviewers: craig.topper, evstupac
Reviewed By: craig.topper
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D55876
llvm-svn: 350074
Diffstat (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp')
0 files changed, 0 insertions, 0 deletions