<?xml version="1.0" ?><?xml-stylesheet type="text/xsl" encoding="UTF-8" href="iform.xsl" version="1.0"?><!DOCTYPE instructionsection  PUBLIC '-//ARM//DTD instructionsection //EN'  'iform-p.dtd'><!-- Copyright (c) 2010-2026 Arm Limited or its affiliates. All rights reserved. --><!-- 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. --><instructionsection id="CBLT_regs" title="CBLT (register) -- A64" type="alias">
  <docvars>
    <docvar key="alias_mnemonic" value="CBLT"/>
    <docvar key="instr-class" value="general"/>
    <docvar key="isa" value="A64"/>
    <docvar key="mnemonic" value="CBGT"/>
    <docvar key="sve-compare-type" value="gt"/>
  </docvars>
  <heading>CBLT (register)</heading>
  <desc>
    <brief>
      <para>Compare signed less than register and branch</para>
    </brief>
    <authored>
      <para>This instruction compares the signed values in two registers, and conditionally
branches to a label at a PC-relative offset if the second value is less than the first.
This instruction provides a hint that this is not a subroutine call or return.
This instruction does not affect the condition flags.</para>
    </authored>
  </desc>
  <aliasto refiform="cbcc_regs.xml" iformid="CBcc_regs">CB&lt;cc&gt; (register)</aliasto>
  <classes>
    <iclass name="Branch" oneof="1" id="iclass_branch" no_encodings="2" isa="A64">
      <docvars>
        <docvar key="instr-class" value="general"/>
        <docvar key="isa" value="A64"/>
        <docvar key="mnemonic" value="CBGT"/>
        <docvar key="sve-compare-type" value="gt"/>
      </docvars>
      <iclassintro count="2"/>
      <arch_variants>
        <arch_variant feature="FEAT_CMPBR" name="v9Ap6"/>
      </arch_variants>
      <regdiagram form="32" psname="A64.control.compbranch_regs.CBGT_32_regs.CBLT" tworows="1">
        <box hibit="31" width="1" name="sf" usename="1">
          <c colspan="1"/>
        </box>
        <box hibit="30" width="7" settings="7">
          <c>1</c>
          <c>1</c>
          <c>1</c>
          <c>0</c>
          <c>1</c>
          <c>0</c>
          <c>0</c>
        </box>
        <box hibit="23" width="3" name="cc" usename="1" settings="3" psbits="xxx">
          <c>0</c>
          <c>0</c>
          <c>0</c>
        </box>
        <box hibit="20" width="5" name="Rm" usename="1">
          <c colspan="5"/>
        </box>
        <box hibit="15" width="2" settings="2">
          <c>0</c>
          <c>0</c>
        </box>
        <box hibit="13" width="9" name="imm9" usename="1">
          <c colspan="9"/>
        </box>
        <box hibit="4" width="5" name="Rt" usename="1">
          <c colspan="5"/>
        </box>
      </regdiagram>
      <encoding name="CBLT_CBGT_32_regs" oneofinclass="2" oneof="2" label="32-bit greater than" bitdiffs="sf == 0">
        <docvars>
          <docvar key="instr-class" value="general"/>
          <docvar key="isa" value="A64"/>
          <docvar key="sve-compare-type" value="gt"/>
          <docvar key="datatype" value="32"/>
          <docvar key="mnemonic" value="CBGT"/>
          <docvar key="alias_mnemonic" value="CBLT"/>
        </docvars>
        <box hibit="31" width="1" name="sf">
          <c>0</c>
        </box>
        <asmtemplate><text>CBLT  </text><a hover="Is the 32-bit name of the second general-purpose source register, encoded in the &quot;Rm&quot; field." link="WmOrWZR__2">&lt;Wm&gt;</a><text>, </text><a hover="Is the 32-bit name of the general-purpose register to be tested, encoded in the &quot;Rt&quot; field." link="WtOrWZR">&lt;Wt&gt;</a><text>, </text><a hover="Is the program label to be conditionally branched to. Its offset from the address of this instruction, in the range -1024 to 1020, is encoded as &quot;imm9&quot; times 4." link="imm9_offset">&lt;label&gt;</a></asmtemplate>
        <equivalent_to>
          <asmtemplate><a href="cbcc_regs.xml#CBGT_32_regs">CBGT</a><text>  </text><a hover="Is the 32-bit name of the general-purpose register to be tested, encoded in the &quot;Rt&quot; field." href="cbcc_regs.xml#WtOrWZR">&lt;Wt&gt;</a><text>, </text><a hover="Is the 32-bit name of the second general-purpose source register, encoded in the &quot;Rm&quot; field." href="cbcc_regs.xml#WmOrWZR__2">&lt;Wm&gt;</a><text>, </text><a hover="Is the program label to be conditionally branched to. Its offset from the address of this instruction, in the range -1024 to 1020, is encoded as &quot;imm9&quot; times 4." href="cbcc_regs.xml#imm9_offset">&lt;label&gt;</a></asmtemplate>
          <aliascond>Never</aliascond>
        </equivalent_to>
      </encoding>
      <encoding name="CBLT_CBGT_64_regs" oneofinclass="2" oneof="2" label="64-bit greater than" bitdiffs="sf == 1">
        <docvars>
          <docvar key="instr-class" value="general"/>
          <docvar key="isa" value="A64"/>
          <docvar key="sve-compare-type" value="gt"/>
          <docvar key="datatype" value="64"/>
          <docvar key="mnemonic" value="CBGT"/>
          <docvar key="alias_mnemonic" value="CBLT"/>
        </docvars>
        <box hibit="31" width="1" name="sf">
          <c>1</c>
        </box>
        <asmtemplate><text>CBLT  </text><a hover="Is the 64-bit name of the second general-purpose source register, encoded in the &quot;Rm&quot; field." link="XmOrXZR__4">&lt;Xm&gt;</a><text>, </text><a hover="Is the 64-bit name of the general-purpose register to be tested, encoded in the &quot;Rt&quot; field." link="XtOrXZR">&lt;Xt&gt;</a><text>, </text><a hover="Is the program label to be conditionally branched to. Its offset from the address of this instruction, in the range -1024 to 1020, is encoded as &quot;imm9&quot; times 4." link="imm9_offset">&lt;label&gt;</a></asmtemplate>
        <equivalent_to>
          <asmtemplate><a href="cbcc_regs.xml#CBGT_64_regs">CBGT</a><text>  </text><a hover="Is the 64-bit name of the general-purpose register to be tested, encoded in the &quot;Rt&quot; field." href="cbcc_regs.xml#XtOrXZR">&lt;Xt&gt;</a><text>, </text><a hover="Is the 64-bit name of the second general-purpose source register, encoded in the &quot;Rm&quot; field." href="cbcc_regs.xml#XmOrXZR__4">&lt;Xm&gt;</a><text>, </text><a hover="Is the program label to be conditionally branched to. Its offset from the address of this instruction, in the range -1024 to 1020, is encoded as &quot;imm9&quot; times 4." href="cbcc_regs.xml#imm9_offset">&lt;label&gt;</a></asmtemplate>
          <aliascond>Never</aliascond>
        </equivalent_to>
      </encoding>
    </iclass>
  </classes>
  <explanations scope="all">
    <explanation enclist="CBLT_CBGT_32_regs" symboldefcount="1">
      <symbol link="WmOrWZR__2">&lt;Wm&gt;</symbol>
      <account encodedin="Rm">
        <intro>
          <para>Is the 32-bit name of the second general-purpose source register, encoded in the &quot;Rm&quot; field.</para>
        </intro>
      </account>
    </explanation>
    <explanation enclist="CBLT_CBGT_32_regs" symboldefcount="1">
      <symbol link="WtOrWZR">&lt;Wt&gt;</symbol>
      <account encodedin="Rt">
        <intro>
          <para>Is the 32-bit name of the general-purpose register to be tested, encoded in the &quot;Rt&quot; field.</para>
        </intro>
      </account>
    </explanation>
    <explanation enclist="CBLT_CBGT_32_regs, CBLT_CBGT_64_regs" symboldefcount="1">
      <symbol link="imm9_offset">&lt;label&gt;</symbol>
      <account encodedin="imm9">
        <intro>
          <para>Is the program label to be conditionally branched to. Its offset from the address of this instruction, in the range -1024 to 1020, is encoded as &quot;imm9&quot; times 4.</para>
        </intro>
      </account>
    </explanation>
    <explanation enclist="CBLT_CBGT_64_regs" symboldefcount="1">
      <symbol link="XmOrXZR__4">&lt;Xm&gt;</symbol>
      <account encodedin="Rm">
        <intro>
          <para>Is the 64-bit name of the second general-purpose source register, encoded in the &quot;Rm&quot; field.</para>
        </intro>
      </account>
    </explanation>
    <explanation enclist="CBLT_CBGT_64_regs" symboldefcount="1">
      <symbol link="XtOrXZR">&lt;Xt&gt;</symbol>
      <account encodedin="Rt">
        <intro>
          <para>Is the 64-bit name of the general-purpose register to be tested, encoded in the &quot;Rt&quot; field.</para>
        </intro>
      </account>
    </explanation>
  </explanations>
  <timestamp>2026-03-26 20:27:25</timestamp>
  <commit_id>2026-03_rel</commit_id>
</instructionsection>