[PATCH] D15744: [mips][microMIPS] Add CodeGen support for MUL* and DMUL* instructions

[Zlatko Buljan via llvm-commits]

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

The patch adds CodeGen support for microMIPS32r6 MUL* and microMIPS64r6 DMUL* instructions:
- updated mul.ll with tests for microMIPSr6 MUL* and DMUL* instruction selection
- separated microMIPSr6 MUL* and DMUL* instructions from equivalent MIPS instructions using NotInMicroMips predicate
- added DAG patterns to description classes for proper selection of MUL* and DMUL* instructions
- implemented DMUL, DMUH, DMULU and DMUHU instructions for microMIPS64r6 and added tests for the standard encodings


http://reviews.llvm.org/D15744

Files:
  lib/Target/Mips/MicroMips32r6InstrInfo.td
  lib/Target/Mips/MicroMips64r6InstrFormats.td
  lib/Target/Mips/MicroMips64r6InstrInfo.td
  lib/Target/Mips/Mips32r6InstrInfo.td
  lib/Target/Mips/Mips64InstrInfo.td
  lib/Target/Mips/Mips64r6InstrInfo.td
  lib/Target/Mips/MipsInstrInfo.td
  test/CodeGen/Mips/llvm-ir/mul.ll
  test/MC/Disassembler/Mips/micromips64r6/valid.txt
  test/MC/Mips/micromips64r6/valid.s

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