gcc/

	* Makefile.in (target-globals.o): Depend on $(REGS_H).
	* regs.h (target_reg_modes): New structure.
	(default_target_reg_modes): Declare.
	(this_target_reg_modes): Declare as a variable or define as a macro.
	(hard_regno_nregs, reg_raw_mode): Redefine as macros.
	* reginfo.c (default_target_reg_modes): New variable.
	(this_target_reg_modes): New conditional variable.
	(hard_regno_nregs, reg_raw_mode): Delete.
	* target-globals.h (this_target_regs): Declare.
	(target_globals): Add a regs field.
	(restore_target_globals): Copy the regs field to this_target_regs.
	* target-globals.c: Include regs.h.
	(default_target_globals): Initialize the regs field.
	(save_target_globals): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@162087 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 25 insertions, 10 deletions

diff --git a/gcc/regs.h b/gcc/regs.h
index c9dddb5abd1..6ae427cd197 100644
--- a/gcc/regs.h
+++ b/gcc/regs.h
@@ -218,13 +218,6 @@ extern short *reg_renumber;
 
 extern bool have_regs_of_mode [MAX_MACHINE_MODE];
 
-/* For each hard register, the widest mode object that it can contain.
-   This will be a MODE_INT mode if the register can hold integers.  Otherwise
-   it will be a MODE_FLOAT or a MODE_CC mode, whichever is valid for the
-   register.  */
-
-extern enum machine_mode reg_raw_mode[FIRST_PSEUDO_REGISTER];
-
 /* Flag set by local-alloc or global-alloc if they decide to allocate
    something in a call-clobbered register.  */
 
@@ -266,9 +259,6 @@ typedef unsigned short move_table[N_REG_CLASSES];
    in another class.  */
 extern move_table *move_cost[MAX_MACHINE_MODE];
 
-/* Specify number of hard registers given machine mode occupy.  */
-extern unsigned char hard_regno_nregs[FIRST_PSEUDO_REGISTER][MAX_MACHINE_MODE];
-
 /* Similar, but here we don't have to move if the first index is a
    subset of the second so in that case the cost is zero.  */
 extern move_table *may_move_in_cost[MAX_MACHINE_MODE];
@@ -277,6 +267,31 @@ extern move_table *may_move_in_cost[MAX_MACHINE_MODE];
    superset of the second so in that case the cost is zero.  */
 extern move_table *may_move_out_cost[MAX_MACHINE_MODE];
 
+/* Target-dependent globals.  */
+struct target_regs {
+  /* For each starting hard register, the number of consecutive hard
+     registers that a given machine mode occupies.  */
+  unsigned char x_hard_regno_nregs[FIRST_PSEUDO_REGISTER][MAX_MACHINE_MODE];
+
+  /* For each hard register, the widest mode object that it can contain.
+     This will be a MODE_INT mode if the register can hold integers.  Otherwise
+     it will be a MODE_FLOAT or a MODE_CC mode, whichever is valid for the
+     register.  */
+  enum machine_mode x_reg_raw_mode[FIRST_PSEUDO_REGISTER];
+};
+
+extern struct target_regs default_target_regs;
+#if SWITCHABLE_TARGET
+extern struct target_regs *this_target_regs;
+#else
+#define this_target_regs (&default_target_regs)
+#endif
+
+#define hard_regno_nregs \
+  (this_target_regs->x_hard_regno_nregs)
+#define reg_raw_mode \
+  (this_target_regs->x_reg_raw_mode)
+
 /* Return an exclusive upper bound on the registers occupied by hard
    register (reg:MODE REGNO).  */