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82 lines
3.9 KiB
HTML
82 lines
3.9 KiB
HTML
4 years ago
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<title>M32C Options - Using the GNU Compiler Collection (GCC)</title>
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<meta name="description" content="Using the GNU Compiler Collection (GCC)">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="Submodel-Options.html#Submodel-Options" title="Submodel Options">
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<link rel="prev" href="LM32-Options.html#LM32-Options" title="LM32 Options">
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<link rel="next" href="M32R_002fD-Options.html#M32R_002fD-Options" title="M32R/D Options">
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Copyright (C) 1988-2015 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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</head>
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<body>
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<div class="node">
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<a name="M32C-Options"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="M32R_002fD-Options.html#M32R_002fD-Options">M32R/D Options</a>,
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Previous: <a rel="previous" accesskey="p" href="LM32-Options.html#LM32-Options">LM32 Options</a>,
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Up: <a rel="up" accesskey="u" href="Submodel-Options.html#Submodel-Options">Submodel Options</a>
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<hr>
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</div>
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<h4 class="subsection">3.17.19 M32C Options</h4>
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<p><a name="index-M32C-options-1791"></a>
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<dl>
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<dt><code>-mcpu=</code><var>name</var><dd><a name="index-mcpu_003d-1792"></a>Select the CPU for which code is generated. <var>name</var> may be one of
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‘<samp><span class="samp">r8c</span></samp>’ for the R8C/Tiny series, ‘<samp><span class="samp">m16c</span></samp>’ for the M16C (up to
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/60) series, ‘<samp><span class="samp">m32cm</span></samp>’ for the M16C/80 series, or ‘<samp><span class="samp">m32c</span></samp>’ for
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the M32C/80 series.
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<br><dt><code>-msim</code><dd><a name="index-msim-1793"></a>Specifies that the program will be run on the simulator. This causes
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an alternate runtime library to be linked in which supports, for
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example, file I/O. You must not use this option when generating
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programs that will run on real hardware; you must provide your own
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runtime library for whatever I/O functions are needed.
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<br><dt><code>-memregs=</code><var>number</var><dd><a name="index-memregs_003d-1794"></a>Specifies the number of memory-based pseudo-registers GCC uses
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during code generation. These pseudo-registers are used like real
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registers, so there is a tradeoff between GCC's ability to fit the
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code into available registers, and the performance penalty of using
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memory instead of registers. Note that all modules in a program must
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be compiled with the same value for this option. Because of that, you
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must not use this option with GCC's default runtime libraries.
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</dl>
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</body></html>
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