9.29.1 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