[all-commits] [llvm/llvm-project] 3f88c1: [RDA] isSafeToDefRegAt: Look at global uses

[Sam Parker via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 3f88c10a6b25668bb99f5eee7867dcbf37df973c
      https://github.com/llvm/llvm-project/commit/3f88c10a6b25668bb99f5eee7867dcbf37df973c
  Author: Sam Parker <sam.parker at arm.com>
  Date:   2020-09-30 (Wed, 30 Sep 2020)

  Changed paths:
    M llvm/lib/CodeGen/ReachingDefAnalysis.cpp
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/biquad-cascade-optsize-strd-lr.mir

  Log Message:
  -----------
  [RDA] isSafeToDefRegAt: Look at global uses

We weren't looking at global uses of a value, so we could happily
overwrite the register incorrectly.

Differential Revision: https://reviews.llvm.org/D88554