[PATCH] D87817: [LICM][Coroutine] Don't sink stores to coroutine suspend point.

[JunMa via Phabricator via llvm-commits]

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This patch is the refactor of D86190 <https://reviews.llvm.org/D86190>. 
See pr46990(https://bugs.llvm.org/show_bug.cgi?id=46990). Instead of using idea (not sinking store instructions to loop exit blocks which cross coro.suspend intrinsics) in D86190 <https://reviews.llvm.org/D86190>.   This patch split exit block of the suspend point alone and ignore it when do promotion.

Test Plan: check-llvm, pr46990


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D87817

Files:
  llvm/lib/Transforms/Scalar/LICM.cpp
  llvm/test/Transforms/LICM/sink-with-coroutine.ll

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