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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2022-01-24 16:44:27 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2022-01-24 16:44:37 +0000 |
| commit | 6997f4d07fa4b462dd3a02838a2cfed45db9c8a0 (patch) | |
| tree | 9ddb6efd69f6bf05ed1dc4038dfb0ffe1ff27f1d /lldb/source/Plugins/ScriptInterpreter/Python/SWIGPythonBridge.cpp | |
| parent | 699e22a083f2bae120e68ce7254fcddb4aaf97b3 (diff) | |
| download | llvm-6997f4d07fa4b462dd3a02838a2cfed45db9c8a0.zip llvm-6997f4d07fa4b462dd3a02838a2cfed45db9c8a0.tar.gz llvm-6997f4d07fa4b462dd3a02838a2cfed45db9c8a0.tar.bz2 | |
[X86] combineSetCCMOVMSK - fold allof(cmpeq(x,y)) -> ptest(sub(x,y)) (PR53379)
As suggested on PR53379, for all-of icmp-eq patterns, we can use ptest(sub(x,y)) on SSE41+ targets
This is a generalization of the existing allof(cmpeq(x,0)) -> ptest(x) pattern
We can probably extend this further, in particularly to handle 256-bit cases on pre-AVX2 targets, but this part of the generalization is pretty trivial
Fixes Issue #53379
Diffstat (limited to 'lldb/source/Plugins/ScriptInterpreter/Python/SWIGPythonBridge.cpp')
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