[PATCH] D38942: [DAG] Promote ADDCARRY / SUBCARRY

[Roger Ferrer Ibanez via Phabricator via llvm-commits]

rogfer01 updated this revision to Diff 126513.
rogfer01 added a comment.

ChangeLog

- Sign extend operands as we will want to use the higher bits (they could be rubbish in the previous diff). Add a comment.


https://reviews.llvm.org/D38942

Files:
  lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
  test/CodeGen/ARM/addsubcarry-promotion.ll

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