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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.
arc601
Assemble for ARC 601. Alias: -mARC601.
arc700
Assemble for ARC 700. Aliases: -mA7, -mARC700.
arcem
Assemble for ARC EM. Aliases: -mEM
archs
Assemble for ARC HS. Aliases: -mHS, -mav2hs.
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.