[PATCH] D95881: [ARM] Extend search for increment in load/store optimizer

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: SjoerdMeijer, NickGuy, simon_tatham, ostannard, efriedma.
Herald added subscribers: danielkiss, arphaman, hiraditya, kristof.beyls.
dmgreen requested review of this revision.
Herald added a project: LLVM.

Currently the findIncDecAfter will only look at the next instruction for post-inc candidates in the load/store optimizer. This extends that to a search through the current BB, until an instruction that modifies or uses the increment reg is found. This allows more post-inc load/stores and ldm/stm's to be created, especially in cases where a schedule might move instructions further apart.


https://reviews.llvm.org/D95881

Files:
  llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
  llvm/test/CodeGen/ARM/fp16-promote.ll
  llvm/test/CodeGen/ARM/indexed-mem.ll
  llvm/test/CodeGen/ARM/va_arg.ll
  llvm/test/CodeGen/Thumb2/LowOverheadLoops/fast-fp-loops.ll
  llvm/test/CodeGen/Thumb2/LowOverheadLoops/mve-float-loops.ll
  llvm/test/CodeGen/Thumb2/mve-float32regloops.ll
  llvm/test/CodeGen/Thumb2/mve-ldst-offset.ll
  llvm/test/CodeGen/Thumb2/mve-ldst-postinc.ll
  llvm/test/CodeGen/Thumb2/mve-ldst-preinc.ll
  llvm/test/CodeGen/Thumb2/mve-postinc-distribute.ll
  llvm/test/CodeGen/Thumb2/mve-postinc-lsr.ll
  llvm/test/CodeGen/Thumb2/mve-satmul-loops.ll
  llvm/test/CodeGen/Thumb2/mve-vecreduce-loops.ll
  llvm/test/CodeGen/Thumb2/mve-vldshuffle.ll
  llvm/test/CodeGen/Thumb2/mve-widen-narrow.ll

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