<html>
    <head>
      <base href="https://bugs.llvm.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [IA] error: register expected"
   href="https://bugs.llvm.org/show_bug.cgi?id=43631">43631</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[IA] error: register expected
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libraries
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Backend: ARM
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>caij2003@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org, peter.smith@linaro.org, Ties.Stuij@arm.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Integrated assembler accepts immediate numbers without hash as the offset in
memory expression for GAS compatibility, but failed to handle those with
parentheses.

$cat bad.s 
.syntax unified
  ldr r12, [sp, (15)]
$clang -target arm-linux-gnueabihf bad.s   
bad.s:2:17: error: register expected
  ldr r12, [sp, (15)]
                ^
$ arm-linux-gnueabihf-as bad.s              
$ echo $?
0</pre>
        </div>
      </p>


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