SystemZ SYSZ_OP_ACREG can be removed #2423
Description
It's not really a bug but more like a tech-debt that after PR #1306, all registers in operands are considered as in the same family SYSZ_OP_REG even for the Access Registers. This fact makes the existence of SYSZ_OP_ACREG confusing. One may check the operands against SYSZ_OP_ACREG but it would never match.
From cstool on v4, d7e459d
cstool/cstool -d sysz 'b24f0078'
0 b2 4f 00 78 ear %r7, %a8
ID: 383 (ear)
op_count: 2
operands[0].type: REG = 7
operands[1].type: ACREG = 8 // <- reports type in SYSZ_OP_ACREG
on v5, 7905571:
cstool/cstool -d sysz 'b24f0078'
0 b2 4f 00 78 ear %r7, %a8
ID: 383 (ear)
op_count: 2
operands[0].type: REG = 7
operands[1].type: REG = a8 // <- type becomes SYSZ_OP_REG
To address this issue the macro SYSZ_OP_ACREG should be remove to prevent confusions.