[PATCH] D27695: Add Instruction number to LSR cost model (PR23384)

[Evgeny Stupachenko via Phabricator via llvm-commits]

evstupac created this revision.
evstupac added reviewers: qcolombet, hfinkel.
evstupac added subscribers: llvm-commits, Farhana, wmi, mzolotukhin.
evstupac set the repository for this revision to rL LLVM.
Herald added a subscriber: mehdi_amini.

Fix PR23384.
The patch do the following:

1. Add instructions number generated by a solution to LSR cost
2. Move LSR cost comparison to target part
3. Add new cross use generation for ICmpZero that ends with zero

One LIT test fails. However it should be fixed when https://reviews.llvm.org/D26367 is committed.

Performance improvement on x86:
spec2000

  177.mesa on -O2 +3%
  256.bzip2 on -Ofast -flto +1.5%


Repository:
  rL LLVM

https://reviews.llvm.org/D27695

Files:
  include/llvm/Analysis/TargetTransformInfo.h
  include/llvm/Analysis/TargetTransformInfoImpl.h
  include/llvm/CodeGen/BasicTTIImpl.h
  lib/Analysis/TargetTransformInfo.cpp
  lib/Target/X86/X86TargetTransformInfo.cpp
  lib/Target/X86/X86TargetTransformInfo.h
  lib/Transforms/Scalar/LoopStrengthReduce.cpp
  test/CodeGen/X86/2006-05-11-InstrSched.ll
  test/CodeGen/X86/atom-fixup-lea3.ll
  test/CodeGen/X86/avoid_complex_am.ll
  test/CodeGen/X86/compact-unwind.ll
  test/CodeGen/X86/full-lsr.ll
  test/CodeGen/X86/loop-strength-reduce4.ll
  test/CodeGen/X86/masked-iv-safe.ll
  test/CodeGen/X86/misched-matrix.ll
  test/Transforms/LoopStrengthReduce/X86/ivchain-X86.ll

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