[PATCH] D69175: [X86][SSE] LowerUINT_TO_FP_i64 - only use HADDPD for size/fast-hops

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon created this revision.
RKSimon added reviewers: spatel, craig.topper, andreadb.
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.

We were always generating a single source HADDPD, but really we should only do this if shouldUseHorizontalOp says its a good idea.


Repository:
  rL LLVM

https://reviews.llvm.org/D69175

Files:
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/test/CodeGen/X86/avx512-intrinsics-fast-isel.ll
  llvm/test/CodeGen/X86/haddsub-3.ll
  llvm/test/CodeGen/X86/haddsub-broadcast.ll
  llvm/test/CodeGen/X86/scalar-int-to-fp.ll

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