9.3.1 Options

The following options control the type of CPU for which code is assembled, and generic constraints on the code generated:

-mcpu=cpu

Set architecture type and register usage for cpu. There are also shortcut alias options available for backward compatibility and convenience. Supported values for cpu are

arc600

Assemble for ARC 600. Aliases: -mA6, -mARC600.

arc600_norm

Assemble for ARC 600 with norm instructions.

arc600_mul64

Assemble for ARC 600 with mul64 instructions.

arc600_mul32x16

Assemble for ARC 600 with mul32x16 instructions.

arc601

Assemble for ARC 601. Alias: -mARC601.

arc601_norm

Assemble for ARC 601 with norm instructions.

arc601_mul64

Assemble for ARC 601 with mul64 instructions.

arc601_mul32x16

Assemble for ARC 601 with mul32x16 instructions.

arc700

Assemble for ARC 700. Aliases: -mA7, -mARC700.

arcem

Assemble for ARC EM. Aliases: -mEM

em

Assemble for ARC EM, identical as arcem variant.

em4

Assemble for ARC EM with code-density instructions.

em4_dmips

Assemble for ARC EM with code-density instructions.

em4_fpus

Assemble for ARC EM with code-density instructions.

em4_fpuda

Assemble for ARC EM with code-density, and double-precision assist instructions.

quarkse_em

Assemble for QuarkSE-EM cpu.

archs

Assemble for ARC HS. Aliases: -mHS, -mav2hs.

hs

Assemble for ARC HS.

hs34

Assemble for ARC HS34.

hs38

Assemble for ARC HS38.

hs38_linux

Assemble for ARC HS38 with floating point support on.

nps400

Assemble for ARC 700 with NPS-400 extended instructions.

Note: the .cpu directive (see ARC Directives) can to be used to select a core variant from within assembly code.

-EB

This option specifies that the output generated by the assembler should be marked as being encoded for a big-endian processor.

-EL

This option specifies that the output generated by the assembler should be marked as being encoded for a little-endian processor - this is the default.

-mcode-density

This option turns on Code Density instructions. Only valid for ARC EM processors.

-mrelax

Enable support for assembly-time relaxation. The assembler will replace a longer version of an instruction with a shorter one, whenever it is possible.

-mnps400

Enable support for NPS-400 extended instructions.

-mspfp

Enable support for single-precision floating point instructions.

-mdpfp

Enable support for double-precision floating point instructions.

-mfpuda

Enable support for double-precision assist floating point instructions. Only valid for ARC EM processors.