[PATCH] D73342: Fix EarlyCSE to intersect aliasing metadata.
Neil Henning via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Feb 19 02:26:14 PST 2020
sheredom marked an inline comment as done.
sheredom added inline comments.
================
Comment at: llvm/lib/Transforms/Scalar/EarlyCSE.cpp:1100
+ if (auto OpInst = dyn_cast<Instruction>(Op)) {
+ combineMetadataForCSE(OpInst, Inst, true);
+ }
----------------
hfinkel wrote:
> Why is DoesKMove true here? OpInst dominated Inst in the original IR, no?
My understanding (albeit naive) of combineMetadataForCSE comes from the fact that at the definition the parameter is called KDominatesJ - which for the load case K does dominate J (whereas for the store case it does not, so I set it false there).
The fact the declaration and definition have different terms for the same boolean seems troublesome now I think about it.
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https://reviews.llvm.org/D73342/new/
https://reviews.llvm.org/D73342
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