[PATCH] D103050: [CodeGen] Refactor libcall lookups for RTLIB::POWI_*

[Bjorn Pettersson via Phabricator via llvm-commits]

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Use RuntimeLibcalls to get a common way to pick correct RTLIB::POWI_*
libcall for a given value type.

This includes a small refactoring of ExpandFPLibCall and
ExpandArgFPLibCall in SelectionDAGLegalize to share a bit of code,
plus adding an ExpandFPLibCall version that can be called directly
when expanding FPOWI/STRICT_FPOWI to ensure that we actually use
the same RTLIB::Libcall when expanding the libcall as we used when
checking the legality of such a call by doing a getLibcallName check.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D103050

Files:
  llvm/include/llvm/CodeGen/RuntimeLibcalls.h
  llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
  llvm/lib/CodeGen/TargetLoweringBase.cpp

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