<html>
    <head>
      <base href="https://llvm.org/bugs/" />
    </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 --- - Host.cpp fails to build using Xcode 4.6.3: use of undeclared identifier '__get_cpuid_max'"
   href="https://llvm.org/bugs/show_bug.cgi?id=30384">30384</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Host.cpp fails to build using Xcode 4.6.3: use of undeclared identifier '__get_cpuid_max'
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </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>new bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>jeremyhu@apple.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Using clang clang-425.0.28 (based on 3.2svn), Host.cpp fails to compile with:


lib/Support/Host.cpp:751:7: error: use of undeclared identifier
'__get_cpuid_max'
  if(!__get_cpuid_max(0, &Vendor))
      ^
1 error generated.
make[2]: *** [lib/Support/CMakeFiles/LLVMSupport.dir/Host.cpp.o] Error 1

---

Regressed in:

commit e422546afbbfc6c8df94b906120d8a9c9e500b31
Author: Alina Sbirlea <<a href="mailto:asbirlea@google.com">asbirlea@google.com</a>>
Date:   Wed Jul 20 18:15:29 2016 +0000

    [cpu-detection] Cleanup of Host.cpp.

    Summary:
    Mirroring most cleanup changed from compiler-rt/lib/builtins/cpu_model.
    x86 methods are still returning a bool.

    Reviewers: llvm-commits, echristo, craig.topper, sanjoy

    Subscribers: mehdi_amini

    Differential Revision: <a href="https://reviews.llvm.org/D22480">https://reviews.llvm.org/D22480</a>

    git-svn-id: <a href="https://llvm.org/svn/llvm-project/llvm/trunk@276149">https://llvm.org/svn/llvm-project/llvm/trunk@276149</a>
91177308-0d34-0410-b5e6-96231b3b80d8</pre>
        </div>
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