Using as: NDS32 Options

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#### 9.30.1 NDS32 Options

The NDS32 configurations of GNU `as` support these special options:

`-O1`

  Optimize for performance.

`-Os`

  Optimize for space.

`-EL`

  Produce little endian data output.

`-EB`

  Produce little endian data output.

`-mpic`

  Generate PIC.

`-mno-fp-as-gp-relax`

  Suppress fp-as-gp relaxation for this file.

`-mb2bb-relax`

  Back-to-back branch optimization.

`-mno-all-relax`

  Suppress all relaxation for this file.

`-march=<arch name>`

  Assemble for architecture <arch name> which could be v3, v3j, v3m, v3f, v3s, v2, v2j, v2f, v2s.

`-mbaseline=<baseline>`

  Assemble for baseline <baseline> which could be v2, v3, v3m.

`-mfpu-freg=FREG`

  Specify a FPU configuration.

  `0 8 SP / 4 DP registers`
  `1 16 SP / 8 DP registers`
  `2 32 SP / 16 DP registers`
  `3 32 SP / 32 DP registers`
`-mabi=abi`

  Specify a abi version <abi> could be v1, v2, v2fp, v2fpp.

`-m[no-]mac`

  Enable/Disable Multiply instructions support.

`-m[no-]div`

  Enable/Disable Divide instructions support.

`-m[no-]16bit-ext`

  Enable/Disable 16-bit extension

`-m[no-]dx-regs`

  Enable/Disable d0/d1 registers

`-m[no-]perf-ext`

  Enable/Disable Performance extension

`-m[no-]perf2-ext`

  Enable/Disable Performance extension 2

`-m[no-]string-ext`

  Enable/Disable String extension

`-m[no-]reduced-regs`

  Enable/Disable Reduced Register configuration (GPR16) option

`-m[no-]audio-isa-ext`

  Enable/Disable AUDIO ISA extension

`-m[no-]fpu-sp-ext`

  Enable/Disable FPU SP extension

`-m[no-]fpu-dp-ext`

  Enable/Disable FPU DP extension

`-m[no-]fpu-fma`

  Enable/Disable FPU fused-multiply-add instructions

`-mall-ext`

  Turn on all extensions and instructions support