[PATCH] D65979: [InstCombine] Simplify pow() into ldexp()

[Evandro Menezes via Phabricator via llvm-commits]

evandro created this revision.
evandro added reviewers: spatel, efriedma, xbolva00.
Herald added subscribers: llvm-commits, hiraditya.
Herald added a project: LLVM.
evandro added a parent revision: D65976: [Transforms] Add a emitBinaryFloatFnCall() version that fetches the function name from TLI.

Simplify `pow(2.0, itofp(y))` to `ldexp(1.0, y)`.


Repository:
  rL LLVM

https://reviews.llvm.org/D65979

Files:
  llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
  llvm/test/Transforms/InstCombine/pow_fp_int.ll

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