@@ -3124,32 +3125,53 @@ peep2_find_free_register (int from, int
regno = raw_regno;
#endif
- /* Don't allocate fixed registers. */
- if (fixed_regs[regno])
- continue;
- /* Don't allocate global registers. */
- if (global_regs[regno])
- continue;
- /* Make sure the register is of the right class. */
- if (! TEST_HARD_REG_BIT (reg_class_contents[cl], regno))
- continue;
- /* And can support the mode we need. */
+ /* Can it support the mode we need? */
if (! HARD_REGNO_MODE_OK (regno, mode))
continue;
- /* And that we don't create an extra save/restore. */
- if (! call_used_regs[regno] && ! df_regs_ever_live_p (regno))
- continue;
- if (! targetm.hard_regno_scratch_ok (regno))
- continue;
-
- /* And we don't clobber traceback for noreturn functions. */
- if ((regno == FRAME_POINTER_REGNUM || regno == HARD_FRAME_POINTER_REGNUM)
- && (! reload_completed || frame_pointer_needed))
- continue;
success = 1;
- for (j = hard_regno_nregs[regno][mode] - 1; j >= 0; j--)
+ for (j = 0; success && j < hard_regno_nregs[regno][mode]; j++)
{
+ /* Don't allocate fixed registers. */
+ if (fixed_regs[regno + j])
+ {
+ success = 0;
+ break;
+ }
+ /* Don't allocate global registers. */
+ if (global_regs[regno + j])
+ {
+ success = 0;
+ break;
+ }
+ /* Make sure the register is of the right class. */
+ if (! TEST_HARD_REG_BIT (reg_class_contents[cl], regno + j))
+ {
+ success = 0;
+ break;
+ }
+ /* And that we don't create an extra save/restore. */
+ if (! call_used_regs[regno + j] && ! df_regs_ever_live_p (regno + j))
+ {
+ success = 0;
+ break;
+ }
+
+ if (! targetm.hard_regno_scratch_ok (regno + j))
+ {
+ success = 0;
+ break;
+ }
+
+ /* And we don't clobber traceback for noreturn functions. */
+ if ((regno + j == FRAME_POINTER_REGNUM
+ || regno + j == HARD_FRAME_POINTER_REGNUM)
+ && (! reload_completed || frame_pointer_needed))
+ {
+ success = 0;
+ break;
+ }
+
if (TEST_HARD_REG_BIT (*reg_set, regno + j)
|| TEST_HARD_REG_BIT (live, regno + j))
{
@@ -3157,6 +3179,7 @@ peep2_find_free_register (int from, int
break;
}
}
+
if (success)
{
add_to_hard_reg_set (reg_set, mode, regno);