The following patch fixes IA64 bootstrap after the last merge.
The patch was sucessfully bootstrapped on ia64 and x86/x86-64.
Committed as rev. 189079.
2012-06-29 Vladimir Makarov <vmaka...@redhat.com>
* lra-constraints.c (get_op_class): Don't process SUBREG.
(check_and_process_move): Simplify the code.
Index: lra-constraints.c
===================================================================
--- lra-constraints.c (revision 189051)
+++ lra-constraints.c (working copy)
@@ -1006,15 +1006,14 @@ get_final_hard_regno (int hard_regno, in
/* Return register class of OP. That is a class of the hard register
itself (if OP is a hard register), or class of assigned hard
- register to the pseudo (if OP is pseudo or its subregister), or
- class of unassigned pseudo (if OP is reload pseudo or its
- subregister). Return NO_REGS otherwise. */
+ register to the pseudo (if OP is pseudo), or class of unassigned
+ pseudo (if OP is reload pseudo). Return NO_REGS otherwise. */
static enum reg_class
get_op_class (rtx op)
{
int regno, hard_regno, offset;
- if (! REG_P (op) && (GET_CODE (op) != SUBREG || ! REG_P (SUBREG_REG (op))))
+ if (! REG_P (op))
return NO_REGS;
lra_get_hard_regno_and_offset (op, &hard_regno, &offset);
if (hard_regno >= 0)
@@ -1022,8 +1021,6 @@ get_op_class (rtx op)
hard_regno = get_final_hard_regno (hard_regno, offset);
return REGNO_REG_CLASS (hard_regno);
}
- if (GET_CODE (op) == SUBREG)
- op = SUBREG_REG (op);
/* Reload pseudo will get a hard register in any case. */
if ((regno = REGNO (op)) >= new_regno_start)
return lra_get_allocno_class (regno);
@@ -1088,14 +1085,10 @@ check_and_process_move (bool *change_p,
sreg = src = SET_SRC (set);
/* Quick check on the right move insn which does not need
reloads. */
- dclass = get_op_class (dest);
- if (dclass != NO_REGS)
- {
- sclass = get_op_class (src);
- if (sclass != NO_REGS
- && targetm.register_move_cost (GET_MODE (src), dclass, sclass) == 2)
- return true;
- }
+ if ((dclass = get_op_class (dest)) != NO_REGS
+ && (sclass = get_op_class (src)) != NO_REGS
+ && targetm.register_move_cost (GET_MODE (src), dclass, sclass) == 2)
+ return true;
if (GET_CODE (dest) == SUBREG)
dreg = SUBREG_REG (dest);
if (GET_CODE (src) == SUBREG)
