[all-commits] [llvm/llvm-project] a399d1: [ARM] Find VPT implicitly predicated by VCTP

[Sam Parker via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: a399d1880bc6e2a13cad02a2a3cb024c27d32ac2
      https://github.com/llvm/llvm-project/commit/a399d1880bc6e2a13cad02a2a3cb024c27d32ac2
  Author: Sam Parker <sam.parker at arm.com>
  Date:   2020-09-25 (Fri, 25 Sep 2020)

  Changed paths:
    M llvm/lib/CodeGen/ReachingDefAnalysis.cpp
    M llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/remat-vctp.ll
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/vpt-blocks.mir

  Log Message:
  -----------
  [ARM] Find VPT implicitly predicated by VCTP

On failing to find a VCTP in the list of instructions that explicitly
predicate the entry of a VPT block, inspect whether the block is
controlled via VPT which is implicitly predicated due to it's
predicated operand(s).

Differential Revision: https://reviews.llvm.org/D87819