[all-commits] [llvm/llvm-project] 58f320: [ARM] Updates to arm-block-placement pass

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 58f3201a20f7c51393ef4509b69515cb9c4b32bf
      https://github.com/llvm/llvm-project/commit/58f3201a20f7c51393ef4509b69515cb9c4b32bf
  Author: Malhar Jajoo <malhar.jajoo at arm.com>
  Date:   2021-04-12 (Mon, 12 Apr 2021)

  Changed paths:
    M llvm/lib/Target/ARM/ARMBlockPlacement.cpp
    M llvm/test/CodeGen/Thumb2/block-placement.mir
    M llvm/test/CodeGen/Thumb2/mve-float16regloops.ll
    M llvm/test/CodeGen/Thumb2/mve-float32regloops.ll

  Log Message:
  -----------
  [ARM] Updates to arm-block-placement pass

The patch makes two updates to the arm-block-placement pass:
- Handle arbitrarily nested loops
- Extends the search (for t2WhileLoopStartLR) to the predecessor of the
  preHeader.

Differential Revision: https://reviews.llvm.org/D99649