[PATCH] D51983: [ARM] bottom-top mul support in ARMParallelDSP

Wed Sep 12 07:01:12 PDT 2018

samparker created this revision.
samparker added a reviewer: SjoerdMeijer.
Herald added a reviewer: javed.absar.
Herald added subscribers: chrib, kristof.beyls.

On failing to find sequences that can be converted into dual macs, try to find sequential 16-bit loads that are used by muls which we can then use smultb, smulbt, smultt with a wide load.

https://reviews.llvm.org/D51983

Files:
  lib/Target/ARM/ARMParallelDSP.cpp
  test/CodeGen/ARM/paralleldsp-top-bottom-neg.ll
  test/CodeGen/ARM/paralleldsp-top-bottom.ll

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