+2005-01-11 Aldy Hernandez <aldyh@redhat.com>
+
+ * regrename.c (kill_value): Handle subreg's that won't simplify.
+
2005-01-11 Richard Henderson <rth@redhat.com>
PR target/13366
static void
kill_value (rtx x, struct value_data *vd)
{
- /* SUBREGS are supposed to have been eliminated by now. But some
- ports, e.g. i386 sse, use them to smuggle vector type information
- through to instruction selection. Each such SUBREG should simplify,
- so if we get a NULL we've done something wrong elsewhere. */
+ rtx orig_rtx = x;
if (GET_CODE (x) == SUBREG)
- x = simplify_subreg (GET_MODE (x), SUBREG_REG (x),
- GET_MODE (SUBREG_REG (x)), SUBREG_BYTE (x));
+ {
+ x = simplify_subreg (GET_MODE (x), SUBREG_REG (x),
+ GET_MODE (SUBREG_REG (x)), SUBREG_BYTE (x));
+ if (x == NULL_RTX)
+ x = SUBREG_REG (orig_rtx);
+ }
if (REG_P (x))
{
unsigned int regno = REGNO (x);