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<title>Using as: ARC Options</title>
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<a name="ARC-Options"></a>
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<div class="header">
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<p>
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Next: <a href="ARC-Syntax.html#ARC-Syntax" accesskey="n" rel="next">ARC Syntax</a>, Up: <a href="ARC_002dDependent.html#ARC_002dDependent" accesskey="u" rel="up">ARC-Dependent</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
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<a name="Options-2"></a>
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<h4 class="subsection">9.3.1 Options</h4>
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<a name="index-ARC-options"></a>
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<a name="index-options-for-ARC"></a>
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<p>The following options control the type of CPU for which code is
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assembled, and generic constraints on the code generated:
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</p>
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<dl compact="compact">
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<dt><code>-mcpu=<var>cpu</var></code></dt>
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<dd><a name="index-_002dmcpu_003dcpu-command_002dline-option_002c-ARC"></a>
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<p>Set architecture type and register usage for <var>cpu</var>. There are
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also shortcut alias options available for backward compatibility and
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convenience. Supported values for <var>cpu</var> are
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</p>
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<dl compact="compact">
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<dd><a name="index-mA6-command_002dline-option_002c-ARC"></a>
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<a name="index-marc600-command_002dline-option_002c-ARC"></a>
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</dd>
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<dt><code>arc600</code></dt>
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<dd><p>Assemble for ARC 600. Aliases: <code>-mA6</code>, <code>-mARC600</code>.
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</p>
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</dd>
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<dt><code>arc600_norm</code></dt>
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<dd><p>Assemble for ARC 600 with norm instructions.
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</p>
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</dd>
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<dt><code>arc600_mul64</code></dt>
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<dd><p>Assemble for ARC 600 with mul64 instructions.
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</p>
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</dd>
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<dt><code>arc600_mul32x16</code></dt>
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<dd><p>Assemble for ARC 600 with mul32x16 instructions.
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</p>
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</dd>
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<dt><code>arc601</code></dt>
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<dd><a name="index-mARC601-command_002dline-option_002c-ARC"></a>
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<p>Assemble for ARC 601. Alias: <code>-mARC601</code>.
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</p>
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</dd>
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<dt><code>arc601_norm</code></dt>
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<dd><p>Assemble for ARC 601 with norm instructions.
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</p>
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</dd>
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<dt><code>arc601_mul64</code></dt>
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<dd><p>Assemble for ARC 601 with mul64 instructions.
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</p>
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</dd>
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<dt><code>arc601_mul32x16</code></dt>
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<dd><p>Assemble for ARC 601 with mul32x16 instructions.
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</p>
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</dd>
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<dt><code>arc700</code></dt>
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<dd><a name="index-mA7-command_002dline-option_002c-ARC"></a>
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<a name="index-mARC700-command_002dline-option_002c-ARC"></a>
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<p>Assemble for ARC 700. Aliases: <code>-mA7</code>, <code>-mARC700</code>.
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</p>
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</dd>
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<dt><code>arcem</code></dt>
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<dd><a name="index-mEM-command_002dline-option_002c-ARC"></a>
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<p>Assemble for ARC EM. Aliases: <code>-mEM</code>
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</p>
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</dd>
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<dt><code>em</code></dt>
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<dd><p>Assemble for ARC EM, identical as arcem variant.
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</p>
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</dd>
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<dt><code>em4</code></dt>
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<dd><p>Assemble for ARC EM with code-density instructions.
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</p>
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</dd>
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<dt><code>em4_dmips</code></dt>
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<dd><p>Assemble for ARC EM with code-density instructions.
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</p>
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</dd>
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<dt><code>em4_fpus</code></dt>
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<dd><p>Assemble for ARC EM with code-density instructions.
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</p>
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</dd>
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<dt><code>em4_fpuda</code></dt>
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<dd><p>Assemble for ARC EM with code-density, and double-precision assist
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instructions.
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</p>
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</dd>
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<dt><code>quarkse_em</code></dt>
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<dd><p>Assemble for QuarkSE-EM cpu.
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</p>
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</dd>
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<dt><code>archs</code></dt>
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<dd><a name="index-mHS-command_002dline-option_002c-ARC"></a>
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<p>Assemble for ARC HS. Aliases: <code>-mHS</code>, <code>-mav2hs</code>.
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</p>
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</dd>
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<dt><code>hs</code></dt>
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<dd><p>Assemble for ARC HS.
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</p>
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</dd>
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<dt><code>hs34</code></dt>
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<dd><p>Assemble for ARC HS34.
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</p>
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</dd>
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<dt><code>hs38</code></dt>
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<dd><p>Assemble for ARC HS38.
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</p>
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</dd>
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<dt><code>hs38_linux</code></dt>
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<dd><p>Assemble for ARC HS38 with floating point support on.
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</p>
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</dd>
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<dt><code>nps400</code></dt>
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<dd><a name="index-mnps400-command_002dline-option_002c-ARC"></a>
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<p>Assemble for ARC 700 with NPS-400 extended instructions.
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</p>
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</dd>
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</dl>
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<p>Note: the <code>.cpu</code> directive (see <a href="ARC-Directives.html#ARC-Directives">ARC Directives</a>) can
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to be used to select a core variant from within assembly code.
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</p>
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<a name="index-_002dEB-command_002dline-option_002c-ARC"></a>
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</dd>
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<dt><code>-EB</code></dt>
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<dd><p>This option specifies that the output generated by the assembler should
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be marked as being encoded for a big-endian processor.
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</p>
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<a name="index-_002dEL-command_002dline-option_002c-ARC"></a>
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</dd>
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<dt><code>-EL</code></dt>
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<dd><p>This option specifies that the output generated by the assembler should
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be marked as being encoded for a little-endian processor - this is the
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default.
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</p>
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<a name="index-_002dmcode_002ddensity-command_002dline-option_002c-ARC"></a>
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</dd>
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<dt><code>-mcode-density</code></dt>
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<dd><p>This option turns on Code Density instructions. Only valid for ARC EM
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processors.
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</p>
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<a name="index-_002dmrelax-command_002dline-option_002c-ARC"></a>
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</dd>
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<dt><code>-mrelax</code></dt>
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<dd><p>Enable support for assembly-time relaxation. The assembler will
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replace a longer version of an instruction with a shorter one,
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whenever it is possible.
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</p>
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<a name="index-_002dmnps400-command_002dline-option_002c-ARC"></a>
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</dd>
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<dt><code>-mnps400</code></dt>
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<dd><p>Enable support for NPS-400 extended instructions.
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</p>
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<a name="index-_002dmspfp-command_002dline-option_002c-ARC"></a>
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</dd>
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<dt><code>-mspfp</code></dt>
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<dd><p>Enable support for single-precision floating point instructions.
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</p>
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<a name="index-_002dmdpfp-command_002dline-option_002c-ARC"></a>
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</dd>
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<dt><code>-mdpfp</code></dt>
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<dd><p>Enable support for double-precision floating point instructions.
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</p>
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<a name="index-_002dmfpuda-command_002dline-option_002c-ARC"></a>
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</dd>
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<dt><code>-mfpuda</code></dt>
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<dd><p>Enable support for double-precision assist floating point instructions.
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Only valid for ARC EM processors.
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</p>
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</dd>
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</dl>
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<hr>
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<div class="header">
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<p>
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Next: <a href="ARC-Syntax.html#ARC-Syntax" accesskey="n" rel="next">ARC Syntax</a>, Up: <a href="ARC_002dDependent.html#ARC_002dDependent" accesskey="u" rel="up">ARC-Dependent</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
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