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| author | Juneyoung Lee <aqjune@gmail.com> | 2021-02-24 16:03:51 +0900 |
|---|---|---|
| committer | Juneyoung Lee <aqjune@gmail.com> | 2021-03-02 02:18:19 +0900 |
| commit | c89d9d8a48c08ffc28e0dbd7372b7070d48fd587 (patch) | |
| tree | e3c4584dd33942767138f91ea381f96f7d314da9 /lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp | |
| parent | 60ba1fefab927af64bc8a03958661bb8c1412684 (diff) | |
[TTI] Consider select form of and/or i1 as having arithmetic cost
This is a patch that updates the cost of `select i1 a, b, false` to be equivalent to that of `and i1 a, b`
as well as the cost of `select i1 a, true, b` equivalent to `or i1 a, b`.
Until now, these selects were folded into and/or i1 by InstCombine, but the transformation is poison-unsafe.
This is a step towards removing the unsafe transformation. D93065 has relevant transformations linked.
These selects should be translated into the assemblies as and/or i1 do in the same manner. The cost should be equivalent.
Reviewed By: spatel
Differential Revision: https://reviews.llvm.org/D97360
Diffstat (limited to 'lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp')
0 files changed, 0 insertions, 0 deletions