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| author | River Riddle <riddleriver@gmail.com> | 2021-03-10 16:13:25 -0800 |
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| committer | River Riddle <riddleriver@gmail.com> | 2021-03-10 16:39:50 -0800 |
| commit | 4e02eb8014c4dd8dd21071947525926bbe8046ef (patch) | |
| tree | 58a2a8425be78c45acf0dc2422b67e09ddd57f34 /llvm/lib/CodeGen/MachineOperand.cpp | |
| parent | 70af0bf6fe462cc16a2e56657d20eeed126d41d0 (diff) | |
| download | llvm-4e02eb8014c4dd8dd21071947525926bbe8046ef.zip llvm-4e02eb8014c4dd8dd21071947525926bbe8046ef.tar.gz llvm-4e02eb8014c4dd8dd21071947525926bbe8046ef.tar.bz2 | |
[mlir] Optimize the implementation of RegionDCE
The current implementation has some inefficiencies that become noticeable when running on large modules. This revision optimizes the code, and updates some out-dated idioms with newer utilities. The main components of this optimization include:
* Add an overload of Block::eraseArguments that allows for O(N) erasure of disjoint arguments.
* Don't process entry block arguments given that we don't erase them at this point.
* Don't track individual operation results, given that we don't erase them. We can just track the parent operation.
Differential Revision: https://reviews.llvm.org/D98309
Diffstat (limited to 'llvm/lib/CodeGen/MachineOperand.cpp')
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