+2008-08-06 Joseph Myers <joseph@codesourcery.com>
+
+ * jump.c (rtx_renumbered_equal_p): Do not call subreg_regno_offset
+ for unrepresentable subregs or treat them as equal to other regs
+ or subregs with the same register number.
+
2008-08-06 Aldy Hernandez <aldyh@redhat.com>
PR middle-end/35432
if (reg_renumber[reg_x] >= 0)
{
+ if (!subreg_offset_representable_p (reg_renumber[reg_x],
+ GET_MODE (SUBREG_REG (x)),
+ byte_x,
+ GET_MODE (x)))
+ return 0;
reg_x = subreg_regno_offset (reg_renumber[reg_x],
GET_MODE (SUBREG_REG (x)),
byte_x,
GET_MODE (x));
byte_x = 0;
}
+ else if (!subreg_offset_representable_p (reg_x,
+ GET_MODE (SUBREG_REG (x)),
+ byte_x,
+ GET_MODE (x)))
+ return 0;
}
else
{
if (reg_renumber[reg_y] >= 0)
{
+ if (!subreg_offset_representable_p (reg_renumber[reg_y],
+ GET_MODE (SUBREG_REG (y)),
+ byte_y,
+ GET_MODE (y)))
+ return 0;
reg_y = subreg_regno_offset (reg_renumber[reg_y],
GET_MODE (SUBREG_REG (y)),
byte_y,
GET_MODE (y));
byte_y = 0;
}
+ else if (!subreg_offset_representable_p (reg_y,
+ GET_MODE (SUBREG_REG (y)),
+ byte_y,
+ GET_MODE (y)))
+ return 0;
}
else
{