[PATCH] D42537: [mips] Fix incorrect sign extension for fpowi libcall

[Simon Dardis via Phabricator via llvm-commits]

sdardis created this revision.
sdardis added reviewers: atanasyan, hfinkel.
Herald added a subscriber: arichardson.

PR36061 showed that during the expansion of ISD::FPOWI, that there
was an incorrect zero extension of the integer argument which for
MIPS64 would then give incorrect results. Address this with the
exisiting mechanism for correcting sign extensions.

This resolves PR36061.

Thanks to James Cowgill for reporting the issue!


Repository:
  rL LLVM

https://reviews.llvm.org/D42537

Files:
  lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
  lib/Target/Mips/MipsISelLowering.cpp
  test/CodeGen/Mips/pr36061.ll

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