[Bug target/52006] New: [4.7 Regression] ARM ICE on

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52006

             Bug #: 52006
           Summary: [4.7 Regression] ARM ICE on
    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


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

unsigned long a;
static int b;

void
foo (void)
{
  asm volatile ("" : "=r" (b));
}

void
bar (float f)
{
  if (f < b / 100.0)
    a = 1;
}

ICEs on arm with:
error: insn does not satisfy its constraints:
(insn 69 64 10 2 (set (reg:SI 77 s14 [orig:143 b ] [143])
        (mem:SI (unspec:SI [
                    (reg/f:SI 2 r2 [141])
                    (const_int 8 [0x8])
                    (const_int 1 [0x1])
                ] UNSPEC_PIC_BASE) [0 S4 A32])) rh784748.i:17 188
{tls_load_dot_plus_eight}
     (nil))
rh784748.i:19:1: internal compiler error: in copyprop_hardreg_forward_1, at
regcprop.c:767