[PATCH] D24300: [NVPTX] Implement llvm.fabs.f32, llvm.max.f32, etc.

[Justin Lebar via llvm-commits]

jlebar created this revision.
jlebar added a reviewer: majnemer.
jlebar added subscribers: tra, jholewinski, llvm-commits.

Previously these only worked via NVPTX-specific intrinsics.

This change will allow us to convert these target-specific intrinsics
into the general LLVM versions, allowing existing LLVM passes to reason
about their behavior.

It also gets us some minor codegen improvements as-is, from situations
where we canonicalize code into one of these llvm intrinsics.

https://reviews.llvm.org/D24300

Files:
  llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp
  llvm/lib/Target/NVPTX/NVPTXInstrInfo.td
  llvm/test/CodeGen/NVPTX/bug22322.ll
  llvm/test/CodeGen/NVPTX/math-intrins.ll

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