preserve_temp_slots (tgtblk);
}
- /* This code assumes srcreg is at least a full word. If it isn't,
- copy it into a new pseudo which is a full word. */
+ /* This code assumes srcreg is at least a full word. If it isn't, copy it
+ into a new pseudo which is a full word.
- /* If FUNCTION_ARG_REG_LITTLE_ENDIAN is set and convert_to_mode does
- a copy, the wrong part of the register gets copied so we fake
- a type conversion in place. */
-
+ If FUNCTION_ARG_REG_LITTLE_ENDIAN is set and convert_to_mode does a copy,
+ the wrong part of the register gets copied so we fake a type conversion
+ in place. */
if (GET_MODE (srcreg) != BLKmode
&& GET_MODE_SIZE (GET_MODE (srcreg)) < UNITS_PER_WORD)
- if (FUNCTION_ARG_REG_LITTLE_ENDIAN)
- srcreg = simplify_gen_subreg (word_mode, srcreg, GET_MODE (srcreg), 0);
- else
- srcreg = convert_to_mode (word_mode, srcreg, TREE_UNSIGNED (type));
+ {
+ if (FUNCTION_ARG_REG_LITTLE_ENDIAN)
+ srcreg = simplify_gen_subreg (word_mode, srcreg, GET_MODE (srcreg), 0);
+ else
+ srcreg = convert_to_mode (word_mode, srcreg, TREE_UNSIGNED (type));
+ }
/* Structures whose size is not a multiple of a word are aligned
to the least significant byte (to the right). On a BYTES_BIG_ENDIAN
if (mode1 == VOIDmode && want_value)
tem = stabilize_reference (tem);
- orig_to_rtx = to_rtx = expand_expr (tem, NULL_RTX, VOIDmode,
- EXPAND_WRITE);
+ orig_to_rtx = to_rtx = expand_expr (tem, NULL_RTX, VOIDmode, 0);
+
if (offset != 0)
{
rtx offset_rtx = expand_expr (offset, NULL_RTX, VOIDmode, 0);
/* If the integer is expressable in a HOST_WIDE_INT, we can find the
lowest bit that's a one. If the result is zero, pessimize by
returning 1. This is overly-conservative, but such things should not
- happen in the offset expressions that we are called with. */
- if (host_integerp (exp, 0))
+ happen in the offset expressions that we are called with. If
+ the constant overlows, we some erroneous program, so return
+ BIGGEST_ALIGNMENT to avoid any later ICE. */
+ if (TREE_CONSTANT_OVERFLOW (exp))
+ return BIGGEST_ALIGNMENT;
+ else if (host_integerp (exp, 0))
{
c0 = tree_low_cst (exp, 0);
c0 = c0 < 0 ? - c0 : c0;