[Bug target/53854] New: ICE in find_constant_pool_ref

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53854

             Bug #: 53854
           Summary: ICE in find_constant_pool_ref
    Classification: Unclassified
           Product: gcc
           Version: 4.7.1
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: ja...@gcc.gnu.org
        ReportedBy: ja...@gcc.gnu.org
            Target: s390x-linux


void baz (void);

void
foo (void)
{
  int i;
  double d = 2.0;
  float f = 2222.0f;
  for (i = 0; i < 10; i++)
    {
      __asm ("# %0 %1" :: "or" (d), "or" (f));
      baz ();
    }
}

ICEs with -m64 -O2 in find_constant_pool_ref, which assumes a single insn
references at most one constant pool entry.  ASM_OPERANDS can reference many
more though.  This breaks systemtap probes on s390x.