[PATCH] D147025: [InstCombine] Teach alloca replacement to handle `addrspacecast`

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

This is just reinterpreting bits of a pointer in memory. This is not an addrspacecast. You can only use an addrspacecast in the trivial cases, otherwise you need to use ptrtoint+inttoptr. This is also why we should allow bitcasts between any pointers with the same size https://discourse.llvm.org/t/rfc-llvm-ir-should-allow-bitcast-between-address-spaces-with-the-same-size/5759


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D147025/new/

https://reviews.llvm.org/D147025