[all-commits] [llvm/llvm-project] 3b0878: [DSE, MSSA] Fix crash when using tryToMergePartialO...

[Florian Hahn via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 3b0878a370055f2a8a6f3c0f05f00d33589c20cf
      https://github.com/llvm/llvm-project/commit/3b0878a370055f2a8a6f3c0f05f00d33589c20cf
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2020-08-13 (Thu, 13 Aug 2020)

  Changed paths:
    M llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
    M llvm/test/Transforms/DeadStoreElimination/MSSA/multiblock-overlap.ll

  Log Message:
  -----------
  [DSE,MSSA] Fix crash when using tryToMergePartialOverlappingStores.

We are re-using tryToMergePartialOverlappingStores, which requires
earlier to domiante Later. In the long run,
tryToMergeParialOverlappingStores should be re-written using MemorySSA.

Fixes PR46513.