[PATCH] D16454: [mips][microMIPS] Add CodeGen support for ADD, ADDIU*, ADDU* and DADD* instructions

[Zlatko Buljan via llvm-commits]

zbuljan created this revision.
zbuljan added reviewers: dsanders, hvarga, zoran.jovanovic.
zbuljan added subscribers: petarj, llvm-commits.
Herald added a reviewer: vkalintiris.
Herald added a subscriber: dsanders.

The patch adds CodeGen support for microMIPS32r6 ADD, ADDIU*, ADDU* and microMIPS64r6 DADD* instructions:

- updated add.ll with tests for microMIPSr6 ADD, ADDIU*, ADDU* and DADD* instruction selection
- separated microMIPS64r6 DADD* instructions from equivalent MIPS64 instructions using NotInMicroMips predicate
- added DAG pattern to ADDIU description class for proper selection of the instruction
- implemented DADD, DADDIU and DADDU instructions for microMIPS64r6 and added tests for the standard encodings


http://reviews.llvm.org/D16454

Files:
  lib/Target/Mips/MicroMips32r6InstrInfo.td
  lib/Target/Mips/MicroMips64r6InstrFormats.td
  lib/Target/Mips/MicroMips64r6InstrInfo.td
  lib/Target/Mips/Mips64InstrInfo.td
  lib/Target/Mips/MipsInstrInfo.td
  test/CodeGen/Mips/llvm-ir/add.ll
  test/MC/Disassembler/Mips/micromips64r6/valid.txt
  test/MC/Mips/micromips64r6/valid.s

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