<!--
these patterns do not provide any benefits.
on the contrary, they only spoil the recognition of functions
<patternlist>
  <patternpairs totalbits="32" postbits="0">
    <prepatterns>
      <!--  76543210 54321098 32109876 10987654 -->
      <data>10000010 10000000</data> <!-- ret -->
      <data>......01 101.....</data> <!-- c.j imm -->
    </prepatterns>
    <postpatterns>
      <!--  76543210 54321098 32109876 10987654 -->
      <data>0.....01 01110001</data> <!-- c.addi16sp sp,-imm -->
      <data>0.....01 00010001</data> <!-- c.addi sp,-imm -->
      <funcstart/>
    </postpatterns>
  </patternpairs>
    <patternpairs totalbits="48" postbits="0">
    <prepatterns>
      <!--  76543210 54321098 32109876 10987654 -->
      <data>10000010 10000000</data> <!-- ret -->
      <data>......01 101.....</data> <!-- c.j imm -->
    </prepatterns>
    <postpatterns>
      <!--  76543210 54321098 32109876 10987654 -->
      <data>00010011 00000001 ....0001 1.......</data> <!--  addi sp,sp,-imm -->
      <!-- and this pattern is wrong!
      <data>.0010111 ........ ........ ........</data> <!--  auipc rd,imm-->
      -->
      <funcstart/>
    </postpatterns>
  </patternpairs>
  <patternpairs totalbits="48" postbits="0">
    <prepatterns>
      <!--  76543210 54321098 32109876 10987654 -->
      <data>01101111 ....0000 ........ ........</data> <!-- j imm -->
    </prepatterns>
    <postpatterns>
      <!--  76543210 54321098 32109876 10987654 -->
      <data>0.....01 01110001</data> <!-- c.addi16sp sp,-imm -->
      <data>0.....01 00010001</data> <!-- c.addi sp,-imm -->
      <funcstart/>
    </postpatterns>
  </patternpairs>
    <patternpairs totalbits="64" postbits="0">
    <prepatterns>
      <!--  76543210 54321098 32109876 10987654 -->
      <data>01101111 ....0000 ........ ........</data> <!-- j imm -->
    </prepatterns>
    <postpatterns>
      <!--  76543210 54321098 32109876 10987654 -->
      <data>00010011 00000001 ....0001 1.......</data> <!--  addi sp,sp,-imm -->
      <!-- and this pattern is wrong!
      <data>.0010111 ........ ........ ........</data> <!--  auipc rd,imm-->
      -->
      <funcstart/>
    </postpatterns>
  </patternpairs>
</patternlist>
-->
