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47 lines
1.9 KiB
XML
47 lines
1.9 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!--
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Copyright (c) 2017 OpenPOWER Foundation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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version="5.0"
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xml:id="sec_powerisa_vector_facilities">
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<title>PowerISA Vector facilities</title>
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<para>The PowerISA vector facilities (VMX and VSX) are extensive, but does
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not always provide a direct or obvious functional equivalent to the Intel
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Intrinsics. But being not obvious is not the same as imposible. It just
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requires some basic programing skills.</para>
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<para>It is a good idea to have an overall understanding of the vector
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capabilities the PowerISA. You do not need to memorize every instructions but
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is helps to know where to look. Both the PowerISA and OpenPOWER ABI have a
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specific structure and organization that can help you find what you looking
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for. </para>
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<para>It also helps to understand the relationship between the PowerISAs
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low level instructions and the higher abstraction of the vector intrinsics as
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defined by the OpenPOWER ABIs Vector Programming Interfaces and the the defacto
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standard of GCC's PowerPC AltiVec Built-in Functions.</para>
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<xi:include href="sec_powerisa.xml"/>
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<xi:include href="sec_powerisa_vector_intrinsics.xml"/>
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<xi:include href="sec_powerisa_vector_size_type.xml"/>
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</section>
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