"##mfloat-abi=softfp": {
      "can_omit": "yes",
      "choice": [
        "-mfloat-abi=softfp",
        ""
      ],
      "default": "",
      "desc": "compiler flag: -mfloat-abi=softfp",
      "sort": 10530,
      "tags": [
        "basic",
        "boolean",
        "optimization"
      ],
      "type": "text"
    },
    "##mregparm": {
      "can_omit": "yes",
      "default": "",
      "desc": "compiler flag: -mregparm",
      "explore_prefix": "-mregparm=",
      "explore_start": 0,
      "explore_step": 1,
      "explore_stop": 32,
      "sort": 30030,
      "tags": [
        "basic",
        "parametric",
        "optimization"
      ],
      "type": "integer"
    },
    "##momit-leaf-frame-pointer": {
      "can_omit": "yes",
      "choice": [
        "-momit-leaf-frame-pointer",
        ""
      ],
      "default": "",
      "desc": "compiler flag: -momit-leaf-frame-pointer",
      "sort": 10560,
      "tags": [
        "basic",
        "boolean",
        "optimization"
      ],
      "type": "text"
    },
    "##mrestrict-it": {
      "can_omit": "yes",
      "choice": [
        "-mrestrict-it",
        ""
      ],
      "default": "",
      "desc": "compiler flag: -mrestrict-it",
      "sort": 10570,
      "tags": [
        "basic",
        "boolean",
        "optimization"
      ],
      "type": "text"
    },
    "##mtune=native": {
      "can_omit": "yes",
      "choice": [
        "-mtune=native",
        ""
      ],
      "default": "",
      "desc": "compiler flag: -mtune=native",
      "sort": 10600,
      "tags": [
        "basic",
        "boolean",
        "optimization"
      ],
      "type": "text"
    },
    "##munaligned-access": {
      "can_omit": "yes",
      "choice": [
        "-munaligned-access",
        ""
      ],
      "default": "",
      "desc": "compiler flag: -munaligned-access",
      "sort": 10610,
      "tags": [
        "basic",
        "boolean",
        "optimization"
      ],
      "type": "text"
    }

  -munaligned-access      Allow memory accesses to be unaligned (AArch32/AArch64 only)
  -mno-unaligned-access   Force all memory accesses to be aligned (AArch32/AArch64 only)

  -mcrc                   Allow use of CRC instructions (ARM only)
  -mnocrc                 Disallow use of CRC instructions (ARM only)


  -mno-movt               Disallow use of movt/movw pairs (ARM only)
  -ffixed-r9              Reserve the r9 register (ARM only)


  -mno-restrict-it        Allow generation of deprecated IT blocks for ARMv8. It is off by default for ARMv8 Thumb mode


  -mhvx-double            Enable Hexagon Double Vector eXtensions
  -mno-hvx-double         Disable Hexagon Double Vector eXtensions

  -mhvx                   Enable Hexagon Vector eXtensions
  -mno-hvx                Disable Hexagon Vector eXtensions

  -meabi <value>          Set EABI type, e.g. 4, 5 or gnu (default depends on triple)

  -mfix-cortex-a53-835769 Workaround Cortex-A53 erratum 835769 (AArch64 only)
  -mgeneral-regs-only     Generate code which only uses the general purpose registers (AArch64 only)
  -mno-fix-cortex-a53-835769 Don't workaround Cortex-A53 erratum 835769 (AArch64 only)
  -ffixed-x18             Reserve the x18 register (AArch64 only)

  -mstack-probe-size=<value> Set the stack probe size