Dávid Bolvanský d605a11993 [Intrinsics] Added writeonly attribute to the first arg of llvm.memmove ...

D18714 introduced writeonly attribute:

"Also start using the attribute for memset, memcpy, and memmove intrinsics,
and remove their special-casing in BasicAliasAnalysis."

But actually, writeonly was not attached to memmove - oversight, it seems.

So let's add it. As we can see, this helps DSE to eliminate redundant stores.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D89724

2020-10-19 23:09:41 +02:00

2.1 KiB

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