[all-commits] [llvm/llvm-project] 0aed0d: [LCSSA] Don't invalidate entire loop in SCEV
Nikita Popov via All-commits
all-commits at lists.llvm.org
Fri Apr 28 03:17:47 PDT 2023
Branch: refs/heads/main
Home: https://github.com/llvm/llvm-project
Commit: 0aed0dbec2434d9d1a41266be009e56cc964633b
https://github.com/llvm/llvm-project/commit/0aed0dbec2434d9d1a41266be009e56cc964633b
Author: Nikita Popov <npopov at redhat.com>
Date: 2023-04-28 (Fri, 28 Apr 2023)
Changed paths:
M llvm/lib/Transforms/Utils/LCSSA.cpp
Log Message:
-----------
[LCSSA] Don't invalidate entire loop in SCEV
We already invalidate each individual instruction for which LCSSA
is formed in formLCSSAForInstructions(), so I don't see a reason
why we would need to invalidate the entire loop on top of that.
I believe we also no longer need the instruction-level invalidation
now that SCEV looks through LCSSA phis, but I'll leave that for a
separate patch, as it's less obvious.
Differential Revision: https://reviews.llvm.org/D149331
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