backend/x86_64/reg_class_def.json

{
  "License": [
    "Copyright (C) 2023 The Android Open Source Project",
    "",
    "Licensed under the Apache License, Version 2.0 (the “License”);",
    "you may not use this file except in compliance with the License.",
    "You may obtain a copy of the License at",
    "",
    "     http://www.apache.org/licenses/LICENSE-2.0",
    "",
    "Unless required by applicable law or agreed to in writing, software",
    "distributed under the License is distributed on an “AS IS” BASIS,",
    "WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.",
    "See the License for the specific language governing permissions and",
    "limitations under the License."
  ],
  "reg_classes": [
    {
      "name": "GeneralReg64",
      "size": 8,
      "comment": ["Legacy registers (those other than r8-15) save a byte in ",
	          "encoding, but RAX, RCX and RDX are often implicit operands"],
      "regs": [
        "RDI",
        "RSI",
        "RBX",
        "R10",
        "R11",
        "R13",
        "R14",
        "R15",
        "R8",
        "R9",
        "RDX",
        "R12",
        "RCX",
        "RAX"
      ]
    },
    {
      "name": "XmmReg",
      "size": 16,
      "comment": ["XMM0-7 save a byte in encoding, but XMM0 can be ",
	          "an implicit operand in some instructions"],
      "regs": [
        "XMM1",
        "XMM2",
        "XMM3",
        "XMM4",
        "XMM5",
        "XMM6",
        "XMM7",
        "XMM8",
        "XMM9",
        "XMM10",
        "XMM11",
        "XMM12",
        "XMM13",
        "XMM14",
        "XMM15",
        "XMM0"
      ]
    },
    {
      "name": "YmmReg",
      "size": 32,
      "regs": [
        "XmmReg"
      ]
    },
    {
      "name": "Reg64",
      "size": 8,
      "regs": [
        "GeneralReg64",
        "XmmReg"
      ]
    },
    {
      "name": "Reg32",
      "size": 4,
      "regs": [
        "Reg64"
      ]
    },
    {
      "name": "GeneralReg32",
      "size": 4,
      "regs": [
        "GeneralReg64"
      ]
    },
    {
      "name": "GeneralReg16",
      "size": 2,
      "regs": [
        "GeneralReg64"
      ]
    },
    {
      "name": "GeneralReg8",
      "size": 1,
      "regs": [
        "GeneralReg64"
      ]
    },
    {
      "name": "FpReg64",
      "size": 8,
      "regs": [
        "XmmReg"
      ]
    },
    {
      "name": "FpReg32",
      "size": 4,
      "regs": [
        "XmmReg"
      ]
    },
    {
      "name": "VecReg128",
      "size": 16,
      "regs": [
        "XmmReg"
      ]
    },
    {
      "name": "VecReg256",
      "size": 32,
      "regs": [
        "XmmReg"
      ]
    },
    {
      "name": "RAX",
      "size": 8,
      "regs": [
        "RAX"
      ]
    },
    {
      "name": "EAX",
      "size": 4,
      "regs": [
        "RAX"
      ]
    },
    {
      "name": "AX",
      "size": 2,
      "regs": [
        "RAX"
      ]
    },
    {
      "name": "AL",
      "size": 1,
      "regs": [
        "RAX"
      ]
    },
    {
      "name": "RBX",
      "size": 8,
      "regs": [
        "RBX"
      ]
    },
    {
      "name": "EBX",
      "size": 4,
      "regs": [
        "RBX"
      ]
    },
    {
      "name": "RCX",
      "size": 8,
      "regs": [
        "RCX"
      ]
    },
    {
      "name": "ECX",
      "size": 4,
      "regs": [
        "RCX"
      ]
    },
    {
      "name": "CL",
      "size": 1,
      "regs": [
        "RCX"
      ]
    },
    {
      "name": "RDX",
      "size": 8,
      "regs": [
        "RDX"
      ]
    },
    {
      "name": "EDX",
      "size": 4,
      "regs": [
        "RDX"
      ]
    },
    {
      "name": "DX",
      "size": 2,
      "regs": [
        "RDX"
      ]
    },
    {
      "name": "RSI",
      "size": 8,
      "regs": [
        "RSI"
      ]
    },
    {
      "name": "RDI",
      "size": 8,
      "regs": [
        "RDI"
      ]
    },
    {
      "name": "R8",
      "size": 8,
      "regs": [
        "R8"
      ]
    },
    {
      "name": "R9",
      "size": 8,
      "regs": [
        "R9"
      ]
    },
    {
      "name": "R10",
      "size": 8,
      "regs": [
        "R10"
      ]
    },
    {
      "name": "R11",
      "size": 8,
      "regs": [
        "R11"
      ]
    },
    {
      "name": "XMM0",
      "size": 16,
      "regs": [
        "XMM0"
      ]
    },
    {
      "name": "XMM1",
      "size": 16,
      "regs": [
        "XMM1"
      ]
    },
    {
      "name": "XMM2",
      "size": 16,
      "regs": [
        "XMM2"
      ]
    },
    {
      "name": "XMM3",
      "size": 16,
      "regs": [
        "XMM3"
      ]
    },
    {
      "name": "XMM4",
      "size": 16,
      "regs": [
        "XMM4"
      ]
    },
    {
      "name": "XMM5",
      "size": 16,
      "regs": [
        "XMM5"
      ]
    },
    {
      "name": "XMM6",
      "size": 16,
      "regs": [
        "XMM6"
      ]
    },
    {
      "name": "XMM7",
      "size": 16,
      "regs": [
        "XMM7"
      ]
    },
    {
      "name": "XMM8",
      "size": 16,
      "regs": [
        "XMM8"
      ]
    },
    {
      "name": "XMM9",
      "size": 16,
      "regs": [
        "XMM9"
      ]
    },
    {
      "name": "XMM10",
      "size": 16,
      "regs": [
        "XMM10"
      ]
    },
    {
      "name": "XMM11",
      "size": 16,
      "regs": [
        "XMM11"
      ]
    },
    {
      "name": "XMM12",
      "size": 16,
      "regs": [
        "XMM12"
      ]
    },
    {
      "name": "XMM13",
      "size": 16,
      "regs": [
        "XMM13"
      ]
    },
    {
      "name": "XMM14",
      "size": 16,
      "regs": [
        "XMM14"
      ]
    },
    {
      "name": "XMM15",
      "size": 16,
      "regs": [
        "XMM15"
      ]
    },
    {
      "name": "FLAGS",
      "size": 0,
      "regs": [
        "FLAGS"
      ]
    }
  ]
}