[PATCH] D149331: [LCSSA] Don't invalidate entire loop in SCEV
Nikita Popov via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Apr 28 03:17:48 PDT 2023
This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG0aed0dbec243: [LCSSA] Don't invalidate entire loop in SCEV (authored by nikic).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D149331/new/
https://reviews.llvm.org/D149331
Files:
llvm/lib/Transforms/Utils/LCSSA.cpp
Index: llvm/lib/Transforms/Utils/LCSSA.cpp
===================================================================
--- llvm/lib/Transforms/Utils/LCSSA.cpp
+++ llvm/lib/Transforms/Utils/LCSSA.cpp
@@ -395,12 +395,6 @@
IRBuilder<> Builder(L.getHeader()->getContext());
Changed = formLCSSAForInstructions(Worklist, DT, *LI, SE, Builder);
- // If we modified the code, remove any caches about the loop from SCEV to
- // avoid dangling entries.
- // FIXME: This is a big hammer, can we clear the cache more selectively?
- if (SE && Changed)
- SE->forgetLoop(&L);
-
assert(L.isLCSSAForm(DT));
return Changed;
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