update darwin to use link_gcc_c_sequence.

[pf3gnuchains/gcc-fork.git] / gcc / regs.h

diff --git a/gcc/regs.h b/gcc/regs.h
index ac23ae6..88fe9af 100644 (file)
--- a/gcc/regs.h
+++ b/gcc/regs.h
@@ -227,12 +227,6 @@ extern int caller_save_needed;
 #define CALLER_SAVE_PROFITABLE(REFS, CALLS)  (4 * (CALLS) < (REFS))
 #endif
 
-/* On most machines a register class is likely to be spilled if it
-   only has one register.  */
-#ifndef CLASS_LIKELY_SPILLED_P
-#define CLASS_LIKELY_SPILLED_P(CLASS) (reg_class_size[(int) (CLASS)] == 1)
-#endif
-
 /* Select a register mode required for caller save of hard regno REGNO.  */
 #ifndef HARD_REGNO_CALLER_SAVE_MODE
 #define HARD_REGNO_CALLER_SAVE_MODE(REGNO, NREGS, MODE) \
@@ -280,6 +274,15 @@ struct target_regs {
 
   /* Keep track of the last mode we initialized move costs for.  */
   int x_last_mode_for_init_move_cost;
+
+  /* Record for each mode whether we can move a register directly to or
+     from an object of that mode in memory.  If we can't, we won't try
+     to use that mode directly when accessing a field of that mode.  */
+  char x_direct_load[NUM_MACHINE_MODES];
+  char x_direct_store[NUM_MACHINE_MODES];
+
+  /* Record for each mode whether we can float-extend from memory.  */
+  bool x_float_extend_from_mem[NUM_MACHINE_MODES][NUM_MACHINE_MODES];
 };
 
 extern struct target_regs default_target_regs;
@@ -303,6 +306,12 @@ extern struct target_regs *this_target_regs;
   (this_target_regs->x_may_move_in_cost)
 #define may_move_out_cost \
   (this_target_regs->x_may_move_out_cost)
+#define direct_load \
+  (this_target_regs->x_direct_load)
+#define direct_store \
+  (this_target_regs->x_direct_store)
+#define float_extend_from_mem \
+  (this_target_regs->x_float_extend_from_mem)
 
 /* Return an exclusive upper bound on the registers occupied by hard
    register (reg:MODE REGNO).  */