[Bug rtl-optimization/48373] New: [4.7 Regression] ICE: in reload_cse_simplify_operands, at postreload.c:403: insn does not satisfy its constraints with -ftree-vectorize -fPIC

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48373

           Summary: [4.7 Regression] ICE: in reload_cse_simplify_operands,
                    at postreload.c:403: insn does not satisfy its
                    constraints with -ftree-vectorize -fPIC
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: zso...@seznam.cz
            Target: i686-pc-linux-gnu


Created attachment 23823
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23823
reduced testcase

Compiler output:
$ gcc -O -ftree-vectorize -fPIC -m32 testcase.c
testcase.c: In function 'foo':
testcase.c:7:1: error: insn does not satisfy its constraints:
(insn 125 36 38 6 (set (reg:V4SI 24 xmm3 [107])
        (reg:V4SI 116)) testcase.c:4 1123 {*movv4si_internal}
     (nil))
testcase.c:7:1: internal compiler error: in reload_cse_simplify_operands, at
postreload.c:403
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r171735 - crash
r171649 - OK
r171648 - OK