[PATCH] D74976: [CostModel][X86] Improve extract/insert element costs (PR43605)

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon updated this revision to Diff 246210.
RKSimon edited the summary of this revision.
RKSimon added a comment.

For many fp cases where we are inserting into index #0 we can fold the insertion into a preceding scalar-fp op. It seems that assuming this is always true isn't too much of a stretch.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D74976/new/

https://reviews.llvm.org/D74976

Files:
  llvm/lib/Target/X86/X86TargetTransformInfo.cpp
  llvm/test/Analysis/CostModel/X86/arith-fp.ll
  llvm/test/Analysis/CostModel/X86/extend.ll
  llvm/test/Analysis/CostModel/X86/fptosi.ll
  llvm/test/Analysis/CostModel/X86/fptoui.ll
  llvm/test/Analysis/CostModel/X86/fround.ll
  llvm/test/Analysis/CostModel/X86/intrinsic-cost.ll
  llvm/test/Analysis/CostModel/X86/load_store.ll
  llvm/test/Analysis/CostModel/X86/masked-intrinsic-cost.ll
  llvm/test/Analysis/CostModel/X86/shuffle-extract_subvector.ll
  llvm/test/Analysis/CostModel/X86/shuffle-insert_subvector.ll
  llvm/test/Analysis/CostModel/X86/sitofp.ll
  llvm/test/Analysis/CostModel/X86/vector-extract.ll
  llvm/test/Analysis/CostModel/X86/vector-insert.ll
  llvm/test/Analysis/CostModel/X86/vshift-ashr-cost.ll
  llvm/test/Analysis/CostModel/X86/vshift-lshr-cost.ll
  llvm/test/Analysis/CostModel/X86/vshift-shl-cost.ll
  llvm/test/Transforms/LoopVectorize/X86/interleaving.ll
  llvm/test/Transforms/LoopVectorize/X86/strided_load_cost.ll
  llvm/test/Transforms/SLPVectorizer/X86/PR35865.ll
  llvm/test/Transforms/SLPVectorizer/X86/alternate-int.ll
  llvm/test/Transforms/SLPVectorizer/X86/commutativity.ll
  llvm/test/Transforms/SLPVectorizer/X86/hadd.ll
  llvm/test/Transforms/SLPVectorizer/X86/hsub.ll
  llvm/test/Transforms/SLPVectorizer/X86/insert-element-build-vector.ll
  llvm/test/Transforms/SLPVectorizer/X86/minimum-sizes.ll
  llvm/test/Transforms/SLPVectorizer/X86/pr35497.ll
  llvm/test/Transforms/SLPVectorizer/X86/remark_horcost.ll
  llvm/test/Transforms/SLPVectorizer/X86/resched.ll
  llvm/test/Transforms/SLPVectorizer/X86/sext.ll
  llvm/test/Transforms/SLPVectorizer/X86/zext.ll