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https://github.com/pound-emu/ballistic.git
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355 lines
18 KiB
XML
355 lines
18 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<?xml-stylesheet type="text/xsl" encoding="UTF-8" href="iform.xsl" version="1.0"?>
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<!DOCTYPE instructionsection PUBLIC "-//ARM//DTD instructionsection //EN" "iform-p.dtd">
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<!-- Copyright (c) 2010-2022 Arm Limited or its affiliates. All rights reserved. -->
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<!-- This document is Non-Confidential. This document may only be used and distributed in accordance with the terms of the agreement entered into by Arm and the party that Arm delivered this document to. -->
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<instructionsection id="fmla_z_zzzi" title="FMLA (indexed)" type="instruction">
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<docvars>
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<docvar key="instr-class" value="sve" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="FMLA" />
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</docvars>
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<heading>FMLA (indexed)</heading>
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<desc>
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<brief>Floating-point fused multiply-add by indexed elements (Zda = Zda + Zn * Zm[indexed])</brief>
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<description>
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<para>Multiply all floating-point elements within each 128-bit segment of the first source vector by the specified element in the corresponding second source vector segment. The products are then destructively added without intermediate rounding to the corresponding elements of the addend and destination vector.</para>
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<para>The elements within the second source vector are specified using an immediate index which selects the same element position within each 128-bit vector segment. The index range is from 0 to one less than the number of elements per 128-bit segment, encoded in 1 to 3 bits depending on the size of the element. This instruction is unpredicated.</para>
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</description>
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<status>Green</status>
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<predicated>False</predicated>
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<takes_movprfx>True</takes_movprfx>
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</desc>
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<alias_list howmany="0"></alias_list>
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<classes>
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<classesintro count="3">
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<txt>It has encodings from 3 classes:</txt>
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<a href="#iclass_half">Half-precision</a>
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<txt>, </txt>
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<a href="#iclass_single">Single-precision</a>
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<txt> and </txt>
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<a href="#iclass_double">Double-precision</a>
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</classesintro>
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<iclass name="Half-precision" oneof="3" id="iclass_half" no_encodings="1" isa="A64">
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<docvars>
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<docvar key="datatype" value="half" />
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<docvar key="instr-class" value="sve" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="FMLA" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="FMLA-Z.ZZZi-H" tworows="1">
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<box hibit="31" width="8" settings="8">
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<c>0</c>
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<c>1</c>
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<c>1</c>
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<c>0</c>
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<c>0</c>
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<c>1</c>
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<c>0</c>
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<c>0</c>
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</box>
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<box hibit="23" settings="1">
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<c>0</c>
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</box>
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<box hibit="22" name="i3h" usename="1">
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<c></c>
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</box>
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<box hibit="21" settings="1">
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<c>1</c>
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</box>
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<box hibit="20" width="2" name="i3l" usename="1">
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<c colspan="2"></c>
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</box>
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<box hibit="18" width="3" name="Zm" usename="1">
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<c colspan="3"></c>
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</box>
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<box hibit="15" width="4" settings="4">
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<c>0</c>
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<c>0</c>
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<c>0</c>
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<c>0</c>
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</box>
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<box hibit="11" name="o2" settings="1">
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<c>0</c>
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</box>
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<box hibit="10" name="op" usename="1" settings="1">
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<c>0</c>
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</box>
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<box hibit="9" width="5" name="Zn" usename="1">
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<c colspan="5"></c>
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</box>
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<box hibit="4" width="5" name="Zda" usename="1">
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<c colspan="5"></c>
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</box>
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</regdiagram>
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<encoding name="fmla_z_zzzi_h" oneofinclass="1" oneof="3" label="">
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<docvars>
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<docvar key="datatype" value="half" />
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<docvar key="instr-class" value="sve" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="FMLA" />
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</docvars>
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<asmtemplate><text>FMLA </text><a link="sa_zda" hover="Third source and destination scalable vector register (field "Zda")"><Zda></a><text>.H, </text><a link="sa_zn" hover="First source scalable vector register (field "Zn")"><Zn></a><text>.H, </text><a link="sa_zm_1" hover="Second source scalable vector register Z0-Z7 (field "Zm")"><Zm></a><text>.H[</text><a link="sa_imm_1" hover="Immediate index [0-7] (field "i3h:i3l")"><imm></a><text>]</text></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="FMLA-Z.ZZZi-H" mylink="FMLA-Z.ZZZi-H" enclabels="" sections="1" secttype="noheading">
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<pstext mayhavelinks="1" section="Decode" rep_section="decode">if !<a link="impl-aarch64.HaveSVE.0" file="shared_pseudocode.xml" hover="function: boolean HaveSVE()">HaveSVE</a>() && !<a link="impl-aarch64.HaveSME.0" file="shared_pseudocode.xml" hover="function: boolean HaveSME()">HaveSME</a>() then UNDEFINED;
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constant integer esize = 16;
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integer index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(i3h:i3l);
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integer n = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zn);
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integer m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zm);
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integer da = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zda);
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boolean op1_neg = FALSE;
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boolean op3_neg = FALSE;</pstext>
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</ps>
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</ps_section>
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</iclass>
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<iclass name="Single-precision" oneof="3" id="iclass_single" no_encodings="1" isa="A64">
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<docvars>
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<docvar key="datatype" value="single" />
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<docvar key="instr-class" value="sve" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="FMLA" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="FMLA-Z.ZZZi-S" tworows="1">
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<box hibit="31" width="8" settings="8">
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<c>0</c>
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<c>1</c>
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<c>1</c>
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<c>0</c>
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<c>0</c>
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<c>1</c>
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<c>0</c>
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<c>0</c>
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</box>
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<box hibit="23" name="size<1>" usename="1" settings="1">
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<c>1</c>
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</box>
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<box hibit="22" name="size<0>" usename="1" settings="1">
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<c>0</c>
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</box>
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<box hibit="21" settings="1">
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<c>1</c>
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</box>
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<box hibit="20" width="2" name="i2" usename="1">
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<c colspan="2"></c>
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</box>
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<box hibit="18" width="3" name="Zm" usename="1">
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<c colspan="3"></c>
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</box>
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<box hibit="15" width="4" settings="4">
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<c>0</c>
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<c>0</c>
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<c>0</c>
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<c>0</c>
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</box>
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<box hibit="11" name="o2" settings="1">
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<c>0</c>
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</box>
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<box hibit="10" name="op" usename="1" settings="1">
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<c>0</c>
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</box>
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<box hibit="9" width="5" name="Zn" usename="1">
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<c colspan="5"></c>
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</box>
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<box hibit="4" width="5" name="Zda" usename="1">
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<c colspan="5"></c>
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</box>
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</regdiagram>
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<encoding name="fmla_z_zzzi_s" oneofinclass="1" oneof="3" label="">
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<docvars>
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<docvar key="datatype" value="single" />
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<docvar key="instr-class" value="sve" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="FMLA" />
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</docvars>
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<asmtemplate><text>FMLA </text><a link="sa_zda" hover="Third source and destination scalable vector register (field "Zda")"><Zda></a><text>.S, </text><a link="sa_zn" hover="First source scalable vector register (field "Zn")"><Zn></a><text>.S, </text><a link="sa_zm_1" hover="Second source scalable vector register Z0-Z7 (field "Zm")"><Zm></a><text>.S[</text><a link="sa_imm_2" hover="Immediate index [0-3] (field "i2")"><imm></a><text>]</text></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="FMLA-Z.ZZZi-S" mylink="FMLA-Z.ZZZi-S" enclabels="" sections="1" secttype="noheading">
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<pstext mayhavelinks="1" section="Decode" rep_section="decode">if !<a link="impl-aarch64.HaveSVE.0" file="shared_pseudocode.xml" hover="function: boolean HaveSVE()">HaveSVE</a>() && !<a link="impl-aarch64.HaveSME.0" file="shared_pseudocode.xml" hover="function: boolean HaveSME()">HaveSME</a>() then UNDEFINED;
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constant integer esize = 32;
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integer index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(i2);
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integer n = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zn);
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integer m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zm);
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integer da = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zda);
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boolean op1_neg = FALSE;
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boolean op3_neg = FALSE;</pstext>
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</ps>
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</ps_section>
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</iclass>
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<iclass name="Double-precision" oneof="3" id="iclass_double" no_encodings="1" isa="A64">
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<docvars>
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<docvar key="datatype" value="double" />
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<docvar key="instr-class" value="sve" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="FMLA" />
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</docvars>
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<iclassintro count="1"></iclassintro>
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<regdiagram form="32" psname="FMLA-Z.ZZZi-D" tworows="1">
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<box hibit="31" width="8" settings="8">
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<c>0</c>
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<c>1</c>
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<c>1</c>
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<c>0</c>
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<c>0</c>
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<c>1</c>
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<c>0</c>
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<c>0</c>
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</box>
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<box hibit="23" name="size<1>" usename="1" settings="1">
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<c>1</c>
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</box>
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<box hibit="22" name="size<0>" usename="1" settings="1">
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<c>1</c>
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</box>
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<box hibit="21" settings="1">
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<c>1</c>
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</box>
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<box hibit="20" name="i1" usename="1">
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<c></c>
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</box>
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<box hibit="19" width="4" name="Zm" usename="1">
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<c colspan="4"></c>
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</box>
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<box hibit="15" width="4" settings="4">
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<c>0</c>
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<c>0</c>
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<c>0</c>
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<c>0</c>
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</box>
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<box hibit="11" name="o2" settings="1">
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<c>0</c>
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</box>
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<box hibit="10" name="op" usename="1" settings="1">
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<c>0</c>
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</box>
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<box hibit="9" width="5" name="Zn" usename="1">
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<c colspan="5"></c>
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</box>
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<box hibit="4" width="5" name="Zda" usename="1">
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<c colspan="5"></c>
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</box>
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</regdiagram>
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<encoding name="fmla_z_zzzi_d" oneofinclass="1" oneof="3" label="">
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<docvars>
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<docvar key="datatype" value="double" />
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<docvar key="instr-class" value="sve" />
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<docvar key="isa" value="A64" />
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<docvar key="mnemonic" value="FMLA" />
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</docvars>
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<asmtemplate><text>FMLA </text><a link="sa_zda" hover="Third source and destination scalable vector register (field "Zda")"><Zda></a><text>.D, </text><a link="sa_zn" hover="First source scalable vector register (field "Zn")"><Zn></a><text>.D, </text><a link="sa_zm" hover="Second source scalable vector register Z0-Z15 (field "Zm")"><Zm></a><text>.D[</text><a link="sa_imm" hover="Immediate index [0-1] (field "i1")"><imm></a><text>]</text></asmtemplate>
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</encoding>
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<ps_section howmany="1">
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<ps name="FMLA-Z.ZZZi-D" mylink="FMLA-Z.ZZZi-D" enclabels="" sections="1" secttype="noheading">
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<pstext mayhavelinks="1" section="Decode" rep_section="decode">if !<a link="impl-aarch64.HaveSVE.0" file="shared_pseudocode.xml" hover="function: boolean HaveSVE()">HaveSVE</a>() && !<a link="impl-aarch64.HaveSME.0" file="shared_pseudocode.xml" hover="function: boolean HaveSME()">HaveSME</a>() then UNDEFINED;
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constant integer esize = 64;
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integer index = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(i1);
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integer n = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zn);
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integer m = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zm);
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integer da = <a link="impl-shared.UInt.1" file="shared_pseudocode.xml" hover="function: integer UInt(bits(N) x)">UInt</a>(Zda);
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boolean op1_neg = FALSE;
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boolean op3_neg = FALSE;</pstext>
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</ps>
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</ps_section>
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</iclass>
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</classes>
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<explanations scope="all">
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<explanation enclist="fmla_z_zzzi_d, fmla_z_zzzi_h, fmla_z_zzzi_s" symboldefcount="1">
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<symbol link="sa_zda"><Zda></symbol>
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<account encodedin="Zda">
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<intro>
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<para>Is the name of the third source and destination scalable vector register, encoded in the "Zda" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="fmla_z_zzzi_d, fmla_z_zzzi_h, fmla_z_zzzi_s" symboldefcount="1">
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<symbol link="sa_zn"><Zn></symbol>
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<account encodedin="Zn">
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<intro>
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<para>Is the name of the first source scalable vector register, encoded in the "Zn" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="fmla_z_zzzi_h, fmla_z_zzzi_s" symboldefcount="1">
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<symbol link="sa_zm_1"><Zm></symbol>
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<account encodedin="Zm">
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<intro>
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<para>For the half-precision and single-precision variant: is the name of the second source scalable vector register Z0-Z7, encoded in the "Zm" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="fmla_z_zzzi_d" symboldefcount="2">
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<symbol link="sa_zm"><Zm></symbol>
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<account encodedin="Zm">
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<docvars>
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<docvar key="datatype" value="double" />
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</docvars>
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<intro>
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<para>For the double-precision variant: is the name of the second source scalable vector register Z0-Z15, encoded in the "Zm" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="fmla_z_zzzi_h" symboldefcount="1">
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<symbol link="sa_imm_1"><imm></symbol>
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<account encodedin="i3h:i3l">
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<docvars>
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<docvar key="datatype" value="half" />
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</docvars>
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<intro>
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<para>For the half-precision variant: is the immediate index, in the range 0 to 7, encoded in the "i3h:i3l" fields.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="fmla_z_zzzi_s" symboldefcount="2">
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<symbol link="sa_imm_2"><imm></symbol>
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<account encodedin="i2">
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<docvars>
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<docvar key="datatype" value="single" />
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</docvars>
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<intro>
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<para>For the single-precision variant: is the immediate index, in the range 0 to 3, encoded in the "i2" field.</para>
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</intro>
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</account>
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</explanation>
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<explanation enclist="fmla_z_zzzi_d" symboldefcount="3">
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<symbol link="sa_imm"><imm></symbol>
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<account encodedin="i1">
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<docvars>
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<docvar key="datatype" value="double" />
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</docvars>
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<intro>
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<para>For the double-precision variant: is the immediate index, in the range 0 to 1, encoded in the "i1" field.</para>
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</intro>
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</account>
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</explanation>
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</explanations>
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<ps_section howmany="1">
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<ps name="FMLA-Z.ZZZi-H" mylink="execute" enclabels="" sections="1" secttype="Operation">
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<pstext mayhavelinks="1" section="Execute" rep_section="execute"><a link="impl-aarch64.CheckSVEEnabled.0" file="shared_pseudocode.xml" hover="function: CheckSVEEnabled()">CheckSVEEnabled</a>();
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constant integer VL = <a link="impl-aarch64.CurrentVL.read.none" file="shared_pseudocode.xml" hover="accessor: integer CurrentVL">CurrentVL</a>;
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constant integer PL = VL DIV 8;
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constant integer elements = VL DIV esize;
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constant integer eltspersegment = 128 DIV esize;
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bits(VL) operand1 = <a link="impl-aarch64.Z.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) Z[integer n, integer width]">Z</a>[n, VL];
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bits(VL) operand2 = <a link="impl-aarch64.Z.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) Z[integer n, integer width]">Z</a>[m, VL];
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bits(VL) result = <a link="impl-aarch64.Z.read.2" file="shared_pseudocode.xml" hover="accessor: bits(width) Z[integer n, integer width]">Z</a>[da, VL];
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for e = 0 to elements-1
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integer segmentbase = e - (e MOD eltspersegment);
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integer s = segmentbase + index;
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bits(esize) element1 = <a link="impl-shared.Elem.read.3" file="shared_pseudocode.xml" hover="accessor: bits(size) Elem[bits(N) vector, integer e, integer size]">Elem</a>[operand1, e, esize];
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bits(esize) element2 = <a link="impl-shared.Elem.read.3" file="shared_pseudocode.xml" hover="accessor: bits(size) Elem[bits(N) vector, integer e, integer size]">Elem</a>[operand2, s, esize];
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bits(esize) element3 = <a link="impl-shared.Elem.read.3" file="shared_pseudocode.xml" hover="accessor: bits(size) Elem[bits(N) vector, integer e, integer size]">Elem</a>[result, e, esize];
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if op1_neg then element1 = <a link="impl-shared.FPNeg.1" file="shared_pseudocode.xml" hover="function: bits(N) FPNeg(bits(N) op)">FPNeg</a>(element1);
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if op3_neg then element3 = <a link="impl-shared.FPNeg.1" file="shared_pseudocode.xml" hover="function: bits(N) FPNeg(bits(N) op)">FPNeg</a>(element3);
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<a link="impl-shared.Elem.write.3" file="shared_pseudocode.xml" hover="accessor: Elem[bits(N) &vector, integer e, integer size] = bits(size) value">Elem</a>[result, e, esize] = <a link="impl-shared.FPMulAdd.4" file="shared_pseudocode.xml" hover="function: bits(N) FPMulAdd(bits(N) addend, bits(N) op1, bits(N) op2, FPCRType fpcr)">FPMulAdd</a>(element3, element1, element2, FPCR[]);
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<a link="impl-aarch64.Z.write.2" file="shared_pseudocode.xml" hover="accessor: Z[integer n, integer width] = bits(width) value">Z</a>[da, VL] = result;</pstext>
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</ps>
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</ps_section>
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</instructionsection>
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