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    <head>
      <base href="https://llvm.org/bugs/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - fatal error: error in backend: SSE register return with SSE disabled/lindata/fpcets/clang64/370/c87/"
   href="https://llvm.org/bugs/show_bug.cgi?id=25415">25415</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>fatal error: error in backend: SSE register return with SSE disabled/lindata/fpcets/clang64/370/c87/
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>clang
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>3.7
          </td>
        </tr>

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

        <tr>
          <th>OS</th>
          <td>Linux
          </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>unassignedclangbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>tydeman@tybor.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>fatal error: error in backend: SSE register return with SSE
disabled/lindata/fpcets/clang64/370/c87/
clang: error: clang frontend command failed with exit code 70 (use -v to see
invocation)
clang version 3.7.0 (tags/RELEASE_370/final)
Target: x86_64-redhat-linux-gnu
Thread model: posix
clang: note: diagnostic msg: PLEASE submit a bug report to
<a href="http://llvm.org/bugs/">http://llvm.org/bugs/</a> and include the crash backtrace, preprocessed source, and
associated run script.
clang: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /tmp/test34-3388a0.c
clang: note: diagnostic msg: /tmp/test34-3388a0.sh
clang: note: diagnostic msg: 

********************

Here is the command line flags I use:
export CFLAGS="-std=c1x -m64 -mfpmath=387 -mno-sse -O0 -pedantic -fmath-errno
${INCS}"

Here is the one line program:
# 1 "<built-in>"
# 1 "test34.c"
float pef2f( const float f ){ return  f-1.f; }

Here is the *.sh:
# Crash reproducer for clang version 3.7.0 (tags/RELEASE_370/final)
# Driver args: "-std=c1x" "-m64" "-mfpmath=387" "-mno-sse" "-O0" "-pedantic"
"-fmath-errno" "-I" "/lindata/fpcets/clang64/370/c87//" "-I"
"/lindata/fpcets/common/" "-I" "/lindata/fpcets/real/" "-I"
"/lindata/fpcets/real/bin/" "-I" "/lindata/fpcets/real/bin/io/" "-I"
"/lindata/fpcets/cmplx/" "-Wno-literal-range" "-Wno-unknown-pragmas" "-c"
"test34.c"
# Original command:  "/usr/bin/clang" "-cc1" "-triple"
"x86_64-redhat-linux-gnu" "-emit-obj" "-mrelax-all" "-disable-free"
"-disable-llvm-verifier" "-main-file-name" "test34.c" "-mrelocation-model"
"static" "-mthread-model" "posix" "-mdisable-fp-elim" "-fmath-errno"
"-masm-verbose" "-mconstructor-aliases" "-munwind-tables" "-fuse-init-array"
"-target-cpu" "x86-64" "-mfpmath" "387" "-target-feature" "-sse"
"-target-linker-version" "2.25" "-dwarf-column-info" "-coverage-file"
"/lindata/fpcets/clang64/370/c87/test34.c" "-resource-dir"
"/usr/bin/../lib/clang/3.7.0" "-I" "/lindata/fpcets/clang64/370/c87//" "-I"
"/lindata/fpcets/common/" "-I" "/lindata/fpcets/real/" "-I"
"/lindata/fpcets/real/bin/" "-I" "/lindata/fpcets/real/bin/io/" "-I"
"/lindata/fpcets/cmplx/" "-internal-isystem" "/usr/local/include"
"-internal-isystem" "/usr/bin/../lib/clang/3.7.0/include"
"-internal-externc-isystem" "/include" "-internal-externc-isystem"
"/usr/include" "-O0" "-Wno-literal-range" "-Wno-unknown-pragmas" "-pedantic"
"-std=c1x" "-fdebug-compilation-dir" "/lindata/fpcets/clang64/370/c87"
"-ferror-limit" "19" "-fmessage-length" "0" "-mstackrealign"
"-fobjc-runtime=gcc" "-fdiagnostics-show-option" "-o" "test34.o" "-x" "c"
"test34.c"
 "/usr/bin/clang" "-cc1" "-triple" "x86_64-redhat-linux-gnu" "-emit-obj"
"-mrelax-all" "-disable-free" "-disable-llvm-verifier" "-main-file-name"
"test34.c" "-mrelocation-model" "static" "-mthread-model" "posix"
"-mdisable-fp-elim" "-fmath-errno" "-masm-verbose" "-mconstructor-aliases"
"-munwind-tables" "-fuse-init-array" "-target-cpu" "x86-64" "-mfpmath" "387"
"-target-feature" "-sse" "-target-linker-version" "2.25" "-dwarf-column-info"
"-O0" "-Wno-literal-range" "-Wno-unknown-pragmas" "-pedantic" "-std=c1x"
"-ferror-limit" "19" "-fmessage-length" "0" "-mstackrealign"
"-fobjc-runtime=gcc" "-fdiagnostics-show-option" "-x" "c" "test34-3388a0.c"</pre>
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