[all-commits] [llvm/llvm-project] 5618e9: [RDA][ARM] collectKilledOperands across multiple b...

[Sam Parker via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 5618e9be37502ede1b56a3ec1c809be461461c0e
      https://github.com/llvm/llvm-project/commit/5618e9be37502ede1b56a3ec1c809be461461c0e
  Author: Sam Parker <sam.parker at arm.com>
  Date:   2020-03-03 (Tue, 03 Mar 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/ReachingDefAnalysis.h
    M llvm/lib/CodeGen/ReachingDefAnalysis.cpp
    M llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/it-block-itercount.mir
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/it-block-mov.mir
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/multiple-do-loops.mir
    M llvm/test/CodeGen/Thumb2/mve-postinc-lsr.ll

  Log Message:
  -----------
  [RDA][ARM] collectKilledOperands across multiple blocks

Use MIOperand in collectLocalKilledOperands to make the search
global, as we already have to search for global uses too. This
allows us to delete more dead code when tail predicating.

Differential Revision: https://reviews.llvm.org/D75167