[PATCH] D16810: [mips] Make isel select the correct DEXT variant up front.

[Daniel Sanders via llvm-commits]

dsanders created this revision.
dsanders added a reviewer: vkalintiris.
dsanders added a subscriber: llvm-commits.
Herald added a subscriber: dsanders.

Previously, it would always select DEXT and substitute any invalid matches
for DEXTU/DEXTM during MipsMCCodeEmitter::encodeInstruction(). This works
but causes problems when adding range checked immediates to IAS.

Now isel selects the correct variant up front.

http://reviews.llvm.org/D16810

Files:
  lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp
  lib/Target/Mips/MicroMips64r6InstrInfo.td
  lib/Target/Mips/MicroMipsInstrInfo.td
  lib/Target/Mips/Mips64InstrInfo.td
  lib/Target/Mips/MipsInstrInfo.td
  test/CodeGen/Mips/fcopysign-f32-f64.ll
  test/CodeGen/Mips/fcopysign.ll
  test/CodeGen/Mips/mips64extins.ll
  test/MC/Mips/micromips64r6/invalid.s
  test/MC/Mips/mips64r2/invalid.s

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