[LLVMbugs] [Bug 16133] New: "Do not know how to split the result of this operator!" backend error with -march=athlon-xp

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=16133

            Bug ID: 16133
           Summary: "Do not know how to split the result of this
                    operator!" backend error with -march=athlon-xp
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: dimitry at andric.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Sample code:

#include <xmmintrin.h>
void foo(void)
{
  __m128 x;
  asm("" : "=x" (x));
}

If this is compiled with "clang -m32 -march=athlon-xp", the result is:

fatal error: error in backend: Do not know how to split the result of this
operator!

Apparently athlon-xp does support SSE, so this is likely a bug somewhere.

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