[Bug target/45946] New: ICE: in extract_insn, at recog.c:2127 when using _Decimal128 with -Os -fno-omit-frame-pointer

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45946

           Summary: ICE: in extract_insn, at recog.c:2127 when using
                    _Decimal128 with -Os -fno-omit-frame-pointer
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


Created attachment 22001
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22001
reduced testcase

Compiler output:
$ gcc -Os -fno-omit-frame-pointer pr45946.c 
pr45946.c: In function 'foo':
pr45946.c:9:1: error: unrecognizable insn:
(insn 13 12 14 3 (set (mem/i:TI (pre_dec:DI (reg/f:DI 7 sp)) [0 S16 A128])
        (const_double 0 [0] 3476778912330022912 [0x3040000000000000] 0 [0] 0
[0])) pr45946.c:8 -1
     (nil))
pr45946.c:9:1: internal compiler error: in extract_insn, at recog.c:2127
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r165152 - crash