[PATCH] D57686: [ARM CGP] Fix ConvertTruncs

Mon Feb 4 06:30:59 PST 2019

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

ConvertTruncs is used to replace a trunc for an AND mask, however this function wasn't working as expected. By performing the change later, we can create a wide type integer mask instead of a narrow -1 value, which could then be simply removed (incorrectly). Because we now perform this action later, it's necessary to cache the trunc type before we perform the promotion.

https://reviews.llvm.org/D57686

Files:
  lib/Target/ARM/ARMCodeGenPrepare.cpp
  test/CodeGen/ARM/CGP/arm-cgp-calls.ll
  test/CodeGen/ARM/CGP/arm-cgp-casts.ll

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