[all-commits] [llvm/llvm-project] b980be: [MSSAUpdater] Skip renaming when inserting def in ...

[Florian Hahn via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: b980bed34b96a9a85c256b1627ef9339d82829eb
      https://github.com/llvm/llvm-project/commit/b980bed34b96a9a85c256b1627ef9339d82829eb
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2020-12-29 (Tue, 29 Dec 2020)

  Changed paths:
    M llvm/lib/Analysis/MemorySSAUpdater.cpp
    M llvm/test/Transforms/GVN/preserve-memoryssa.ll

  Log Message:
  -----------
  [MSSAUpdater] Skip renaming when inserting def in unreachable block.

This fixes a updater crash when moving memory defs between unreachable
blocks.

Fixes PR48616.