[Bug target/46098] New: [4.5/4.6 Regression] ICE: in extract_insn, at recog.c:2100 with -msse3 -ffloat-store and __builtin_ia32_loadupd()

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46098

           Summary: [4.5/4.6 Regression] ICE: in extract_insn, at
                    recog.c:2100 with -msse3 -ffloat-store and
                    __builtin_ia32_loadupd()
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


----- testcase.c -----
typedef double v2df __attribute__((vector_size (16)));

v2df foo (double *d)
{
  return __builtin_ia32_loadupd (d);
}
----------------------

Compiler output:
$ gcc -msse3 -ffloat-store testcase.c
testcase.c: In function 'foo':
testcase.c:6:1: error: unrecognizable insn:
(insn 7 6 8 3 (set (mem/c/i:V2DF (plus:DI (reg/f:DI 54 virtual-stack-vars)
                (const_int -16 [0xfffffffffffffff0])) [0 D.2706+0 S16 A128])
        (unspec:V2DF [
                (mem:V2DF (reg:DI 60) [0 S16 A8])
            ] UNSPEC_MOVU)) testcase.c:5 -1
     (nil))
testcase.c:6:1: internal compiler error: in extract_insn, at recog.c:2110
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r165719 - crash
r153685 - crash
4.5 r163761 - crash
4.4 r160770 - OK