[PATCH] D29887: [mips] divide macro instruction cleanup.

[Simon Dardis via Phabricator via llvm-commits]

sdardis created this revision.

Clean up the implementation of divide macro expansion by getting rid of a
FIXME regarding magic numbers and branch instructions. Match GAS' behaviour
for expansion of ddiv / div in the two and three operand cases. Add the two
operand alias for MIPSR6. Finally, optimize macro expansion cases where the
divisior is the $zero register.


https://reviews.llvm.org/D29887

Files:
  lib/Target/Mips/AsmParser/MipsAsmParser.cpp
  lib/Target/Mips/Mips32r6InstrInfo.td
  lib/Target/Mips/Mips64InstrInfo.td
  lib/Target/Mips/MipsInstrInfo.td
  lib/Target/Mips/MipsRegisterInfo.td
  test/MC/Mips/macro-ddiv.s
  test/MC/Mips/macro-ddivu.s
  test/MC/Mips/macro-div-bad.s
  test/MC/Mips/macro-div.s
  test/MC/Mips/macro-divu-bad.s
  test/MC/Mips/macro-divu.s

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