[PATCH] D120842: [DSE] Cache liveOnEntry as clobbering access

[Philip Reames via Phabricator via llvm-commits]

reames added a comment.

In D120842#3357155 <https://reviews.llvm.org/D120842#3357155>, @fhahn wrote:

> IIUC it's not possible to write a test for this easily, because the only use of the optimized access in DSE is `eliminateRedundantStoresOfExistingValues`, which is not applicable if the optimized accesses is liveOnEntry, right?

I came across this as a compile time improvement.  I could maybe test for the memory ssa printer pass after DSE, but that feels too fragile to be worthwhile.


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https://reviews.llvm.org/D120842