[PATCH] D22064: [X86] Make some cast costs more precise

[Michael Kuperstein via llvm-commits]

mkuper created this revision.
mkuper added reviewers: delena, RKSimon, spatel.
mkuper added a subscriber: llvm-commits.

This brings back from the dead the AVX table parts of Elena's D15604.

The SSE changes seem more closely bound to the strategy change (since the current costs use the weird "convert to simple types, then look up" form), I'll look into that separately.

http://reviews.llvm.org/D22064

Files:
  lib/Target/X86/X86TargetTransformInfo.cpp
  test/Analysis/CostModel/X86/sitofp.ll
  test/Analysis/CostModel/X86/uitofp.ll
  test/Transforms/LoopVectorize/X86/uint64_to_fp64-cost-model.ll

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