[Bug target/51915] New: [4.7 Regression] ICE in output_move_double

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51915

             Bug #: 51915
           Summary: [4.7 Regression] ICE in output_move_double
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: ja...@gcc.gnu.org
        ReportedBy: ja...@gcc.gnu.org
                CC: ram...@gcc.gnu.org
            Target: arm-linux-gnueabi


The following testcase started ICEing probably with PR50022 change:
./xgcc -B ./ -march=armv7-a -mfloat-abi=hard -O2 rh783334.c
rh783334.c: In function ‘bar’:
rh783334.c:12:1: internal compiler error: in output_move_double, at
config/arm/arm.c:13951
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

/* { dg-do compile } */
/* { dg-options "-march=armv7-a -mfloat-abi=hard -O2" } */

struct S { int s1; void *s2; };
struct T { struct S t1; unsigned long long t2; };
struct S *foo (unsigned long long);

struct S *
bar (struct S *x)
{
  return foo (((struct T *) x)->t2);
}