<html>
    <head>
      <base href="http://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 --- - LLVM ERROR: Cannot select: intrinsic %llvm.x86.sse41.blendvps"
   href="http://llvm.org/bugs/show_bug.cgi?id=15792">15792</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>LLVM ERROR: Cannot select: intrinsic %llvm.x86.sse41.blendvps
          </td>
        </tr>

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

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

        <tr>
          <th>Hardware</th>
          <td>Macintosh
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>MacOS X
          </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>schnetter@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=10381" name="attach_10381" title="preprocessed source code">attachment 10381</a> <a href="attachment.cgi?id=10381&action=edit" title="preprocessed source code">[details]</a></span>
preprocessed source code

When I execute the commands:
{{{
clang++-mp-3.3    -Wall -g -std=c++11 -stdlib=libc++ -march=native -O4   -o
CMakeFiles/bench.dir/bench.cc.o -c /Users/eschnett/src/cc/vecmathlib/bench.cc
clang++-mp-3.3 -v    -Wall -g -std=c++11 -stdlib=libc++ -march=native -O4
-Wl,-search_paths_first -Wl,-headerpad_max_install_names  
CMakeFiles/bench.dir/bench.cc.o  -o bench  
}}}

then I receive this error:
{{{
clang version 3.3 (trunk 179575)
Target: x86_64-apple-darwin12.3.0
Thread model: posix
 "/opt/local/libexec/llvm-3.3/bin/ld" -demangle -dynamic -arch x86_64
-macosx_version_min 10.8.0 -o bench -search_paths_first
-headerpad_max_install_names CMakeFiles/bench.dir/bench.cc.o -lc++ -lSystem
/opt/local/libexec/llvm-3.3/bin/../lib/clang/3.3/lib/darwin/libclang_rt.osx.a
LLVM ERROR: Cannot select: intrinsic %llvm.x86.sse41.blendvps
clang: error: linker command failed with exit code 1 (use -v to see invocation)
}}}

Things work fine if I replace -O4 by -O3. My processor does support the
blendvps instruction.</pre>
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