[PATCH] D15549: [X86] Use push-pop for materializing small constants under 'minsize'

[Hans Wennborg via llvm-commits]

hans created this revision.
hans added reviewers: mkuper, DavidKreitzer.
hans added a subscriber: llvm-commits.

This is a follow-up to r255656 which uses push-pop for materializing small constants with 3 bytes instead of a 5-byte (or more) mov.

Since it's slower, let's put it under 'minsize'.

Please take a look.

http://reviews.llvm.org/D15549

Files:
  lib/Target/X86/X86ISelDAGToDAG.cpp
  lib/Target/X86/X86InstrCompiler.td
  lib/Target/X86/X86InstrInfo.cpp
  lib/Target/X86/X86InstrInfo.h
  lib/Target/X86/X86InstrInfo.td
  test/CodeGen/X86/materialize-one.ll
  test/CodeGen/X86/materialize.ll
  test/CodeGen/X86/powi.ll

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