[PATCH] D67220: [ARM][ParallelDSP] Fix for sext input

[Sam Parker via Phabricator via llvm-commits]

samparker created this revision.
samparker added reviewers: efriedma, SjoerdMeijer, dmgreen.
Herald added subscribers: kristof.beyls, javed.absar.

The incoming accumulator value can be discovered through a sext, in which case there will be a mismatch between the input and the result. So sign extend the accumulator input if we're performing a 64-bit mac.


https://reviews.llvm.org/D67220

Files:
  lib/Target/ARM/ARMParallelDSP.cpp
  test/CodeGen/ARM/ParallelDSP/blocks.ll
  test/CodeGen/ARM/ParallelDSP/sext-acc.ll

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