* combine.c (subst): Use CLASS_CANNOT_CHANGE_MODE and

        CLASS_CANNOT_CHANGE_MODE_P instead of CLASS_CANNOT_CHANGE_SIZE
        and hard-coded tests.
        (simplify_set): Likewise.
        (gen_lowpart_for_combine): Likewise.
        * emit-rtl.c (gen_lowpart_common): Likewise.
        * global.c (find_reg): Likewise.
        * local-alloc.c (find_free_reg): Likewise.
        * recog.c (register_operand): Likewise.
        * regclass.c (init_reg_sets_1): Likewise.
        (record_operand_costs, regclass): Likewise.
        * reload.c (push_reload): Likewise.
        * reload1.c (choose_reload_regs): Likewise.
        * flow.c (mark_used_regs): Conditionally set REG_CHANGES_MODE.
        * local-alloc.c (struct qty): Rename changes_size to changes_mode.
        Update all references.
        * regs.h (struct reg_info_def): Likewise.
        (REG_CHANGES_MODE): Rename from REG_CHANGES_SIZE.
        * tm.texi (CLASS_CANNOT_CHANGE_MODE): Document.
        (CLASS_CANNOT_CHANGE_MODE_P): Likewise.

        * config/alpha/alpha.h (CLASS_CANNOT_CHANGE_MODE): Rename.
        (CLASS_CANNOT_CHANGE_MODE_P): New.
        * config/mips/mips.h: Likewise.
        * config/pa/pa32-regs.h: Likewise.
        * config/pa/pa64-regs.h: Likewise.
        * config/rs6000/rs6000.h: Likewise.
        * config/sh/sh.h: Likewise.
        * config/ia64/ia64.h (CLASS_CANNOT_CHANGE_MODE): New.
        (CLASS_CANNOT_CHANGE_MODE_P): New.
        * config/avr/avr.h (CLASS_CANNOT_CHANGE_SIZE): Remove dead code.
        * config/d30v/d30v.h: Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@34526 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 9 insertions, 9 deletions

diff --git a/gcc/local-alloc.c b/gcc/local-alloc.c
index bd6492980ea..e2c00bf8dec 100644
--- a/gcc/local-alloc.c
+++ b/gcc/local-alloc.c
@@ -140,10 +140,10 @@ struct qty
 
   short phys_reg;
 
-  /* Nonzero if this quantity has been used in a SUBREG that changes
-     its size.  */
+  /* Nonzero if this quantity has been used in a SUBREG in some
+     way that is illegal.  */
 
-  char changes_size;
+  char changes_mode;
 
 };
 
@@ -301,7 +301,7 @@ alloc_qty (regno, mode, size, birth)
   qty[qtyno].min_class = reg_preferred_class (regno);
   qty[qtyno].alternate_class = reg_alternate_class (regno);
   qty[qtyno].n_refs = REG_N_REFS (regno);
-  qty[qtyno].changes_size = REG_CHANGES_SIZE (regno);
+  qty[qtyno].changes_mode = REG_CHANGES_MODE (regno);
 }
 
 /* Main entry point of this file.  */
@@ -1795,8 +1795,8 @@ update_qty_class (qtyno, reg)
   if (reg_class_subset_p (rclass, qty[qtyno].alternate_class))
     qty[qtyno].alternate_class = rclass;
 
-  if (REG_CHANGES_SIZE (reg))
-    qty[qtyno].changes_size = 1;
+  if (REG_CHANGES_MODE (reg))
+    qty[qtyno].changes_mode = 1;
 }
 
 /* Handle something which alters the value of an rtx REG.
@@ -1997,10 +1997,10 @@ find_free_reg (class, mode, qtyno, accept_call_clobbered, just_try_suggested,
   SET_HARD_REG_BIT (used, FRAME_POINTER_REGNUM);
 #endif
 
-#ifdef CLASS_CANNOT_CHANGE_SIZE
-  if (qty[qtyno].changes_size)
+#ifdef CLASS_CANNOT_CHANGE_MODE
+  if (qty[qtyno].changes_mode)
     IOR_HARD_REG_SET (used,
-		      reg_class_contents[(int) CLASS_CANNOT_CHANGE_SIZE]);
+		      reg_class_contents[(int) CLASS_CANNOT_CHANGE_MODE]);
 #endif
 
   /* Normally, the registers that can be used for the first register in