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80 lines
4.1 KiB
HTML
80 lines
4.1 KiB
HTML
4 years ago
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<title>ARM C Language Extensions (ACLE) - 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="Target-Builtins.html#Target-Builtins" title="Target Builtins">
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<link rel="prev" href="ARM-iWMMXt-Built_002din-Functions.html#ARM-iWMMXt-Built_002din-Functions" title="ARM iWMMXt Built-in Functions">
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<link rel="next" href="ARM-Floating-Point-Status-and-Control-Intrinsics.html#ARM-Floating-Point-Status-and-Control-Intrinsics" title="ARM Floating Point Status and Control Intrinsics">
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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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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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<body>
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<div class="node">
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<a name="ARM-C-Language-Extensions-(ACLE)"></a>
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<a name="ARM-C-Language-Extensions-_0028ACLE_0029"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="ARM-Floating-Point-Status-and-Control-Intrinsics.html#ARM-Floating-Point-Status-and-Control-Intrinsics">ARM Floating Point Status and Control Intrinsics</a>,
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Previous: <a rel="previous" accesskey="p" href="ARM-iWMMXt-Built_002din-Functions.html#ARM-iWMMXt-Built_002din-Functions">ARM iWMMXt Built-in Functions</a>,
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Up: <a rel="up" accesskey="u" href="Target-Builtins.html#Target-Builtins">Target Builtins</a>
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<hr>
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</div>
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<h4 class="subsection">6.58.7 ARM C Language Extensions (ACLE)</h4>
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<p>GCC implements extensions for C as described in the ARM C Language
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Extensions (ACLE) specification, which can be found at
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<a href="http://infocenter.arm.com/help/topic/com.arm.doc.ihi0053c/IHI0053C_acle_2_0.pdf">http://infocenter.arm.com/help/topic/com.arm.doc.ihi0053c/IHI0053C_acle_2_0.pdf</a>.
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<p>As a part of ACLE, GCC implements extensions for Advanced SIMD as described in
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the ARM C Language Extensions Specification. The complete list of Advanced SIMD
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intrinsics can be found at
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<a href="http://infocenter.arm.com/help/topic/com.arm.doc.ihi0073a/IHI0073A_arm_neon_intrinsics_ref.pdf">http://infocenter.arm.com/help/topic/com.arm.doc.ihi0073a/IHI0073A_arm_neon_intrinsics_ref.pdf</a>.
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The built-in intrinsics for the Advanced SIMD extension are available when
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NEON is enabled.
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<p>Currently, ARM and AArch64 back ends do not support ACLE 2.0 fully. Both
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back ends support CRC32 intrinsics from <samp><span class="file">arm_acle.h</span></samp>. The ARM back end's
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16-bit floating-point Advanced SIMD intrinsics currently comply to ACLE v1.1.
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AArch64's back end does not have support for 16-bit floating point Advanced SIMD
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intrinsics yet.
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<p>See <a href="ARM-Options.html#ARM-Options">ARM Options</a> and <a href="AArch64-Options.html#AArch64-Options">AArch64 Options</a> for more information on the
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availability of extensions.
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</body></html>
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