[PATCH] D106779: [SimplifyCFG] Make ValueEqaulityComparison freeze-aware.
Roman Lebedev via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Jul 26 14:28:55 PDT 2021
lebedev.ri added a comment.
In D106779#2905636 <https://reviews.llvm.org/D106779#2905636>, @nikic wrote:
> As the relevant optimizations already exist in InstCombine (D105392 <https://reviews.llvm.org/D105392>, D106233 <https://reviews.llvm.org/D106233>) is the motivation here a phase ordering problem? No InstCombine + SimplifyCFG runs at the relevant pipeline position?
I'll ask a slightly different question.
Does simplifycfg itself insert said `freeze` that is problematic here, and thus blocks itselves forward progress?
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https://reviews.llvm.org/D106779
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