[PATCH] D85279: [Coroutines] Use `Value::stripPointerCasts` to collect lifetime marker of `alloca` in CoroFrame

[Chuanqi Xu via Phabricator via llvm-commits]

ChuanqiXu created this revision.
ChuanqiXu added reviewers: junparser, lewissbaker, modocache.
Herald added subscribers: llvm-commits, hiraditya.
Herald added a project: LLVM.
ChuanqiXu requested review of this revision.

In CoroFrame, we collect lifetime marker of an `alloca` by collect the user of `BitCast` who is the user of the `alloca`. However, either the `alloca` itself could be used with the lifetime marker or the `BitCast` of the `alloca` could be transformed to other instructions. (e.g., it may be transformed to all zero reps in `InstCombine` pass). This patch tries to fix these two little bugs.


https://reviews.llvm.org/D85279

Files:
  llvm/lib/Transforms/Coroutines/CoroFrame.cpp
  llvm/test/Transforms/Coroutines/coro-split-sink-lifetime-03.ll
  llvm/test/Transforms/Coroutines/coro-split-sink-lifetime-04.ll

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