[PATCH] D48869: [AArch64][SVE] Asm: Support for SVE condition code aliases

[Sander de Smalen via Phabricator via llvm-commits]

sdesmalen created this revision.
sdesmalen added reviewers: rengolin, fhahn, SjoerdMeijer, samparker.
Herald added a reviewer: javed.absar.
Herald added subscribers: rkruppe, kristof.beyls, tschuett.

SVE overloads the AArch64 PSTATE condition flags and introduces
a set of condition code aliases for the assembler. The 
details are described in section 2.2 of the architecture
reference manual supplement for SVE.

In short:

  SVE alias =>  AArch64 name
  --------------------------
  NONE      => EQ
  ANY       => NE
  NLAST     => HS
  LAST      => LO
  FIRST     => MI
  NFRST     => PL
  PMORE     => HI
  PLAST     => LS
  TCONT     => GE
  TSTOP     => LT


https://reviews.llvm.org/D48869

Files:
  lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
  test/MC/AArch64/SVE/condtion-codes.s

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