Patch to fix -mcpu=G5 interface to EH runtime library.

Reviewed by Geoff Keating.

From-SVN: r86074

gcc/ChangeLog

+2004-08-16  Fariborz Jahanian <fjahanian@apple.com>
+
+	* except.c (get_exception_filter, build_post_landing_pads,
+	dw2_build_landing_pads): Use target-specific mode for 'filter'.
+	* target-def.h (TARGET_EH_RETURN_FILTER_MODE): macro defined and used.
+	* target.h (eh_return_filter_mode): New field added.
+	* targhooks.c (default_eh_return_filter_mode): Defined.
+	* targhooks.h (default_eh_return_filter_mode): Declared.
+	* config/rs6000/rs6000.c (rs6000_eh_return_filter_mode): Defined.
+
 2004-08-16  Nathanael Nerode  <neroden@gcc.gnu.org>
 
 	* configure.ac: Replace _GCC_TOPLEV_NONCANONICAL_TARGET with

gcc/config/rs6000/rs6000.c

@@ -748,6 +748,8 @@ static tree rs6000_build_builtin_va_list (void);
 static tree rs6000_gimplify_va_arg (tree, tree, tree *, tree *);
 static bool rs6000_must_pass_in_stack (enum machine_mode, tree);
 
+static enum machine_mode rs6000_eh_return_filter_mode (void);
+
 /* Hash table stuff for keeping track of TOC entries.  */
 
 struct toc_hash_struct GTY(())
@@ -964,6 +966,9 @@ static const char alt_reg_names[][8] =
 #undef TARGET_GIMPLIFY_VA_ARG_EXPR
 #define TARGET_GIMPLIFY_VA_ARG_EXPR rs6000_gimplify_va_arg
 
+#undef TARGET_EH_RETURN_FILTER_MODE
+#define TARGET_EH_RETURN_FILTER_MODE rs6000_eh_return_filter_mode
+
 struct gcc_target targetm = TARGET_INITIALIZER;
 
 
@@ -17171,4 +17176,11 @@ rs6000_dbx_register_number (unsigned int regno)
   abort ();
 }
 
+/* target hook eh_return_filter_mode */
+static enum machine_mode 
+rs6000_eh_return_filter_mode (void)
+{
+  return TARGET_32BIT ? SImode : word_mode;
+}
+
 #include "gt-rs6000.h"

gcc/except.c

@@ -628,7 +628,7 @@ get_exception_filter (struct function *fun)
   rtx filter = fun->eh->filter;
   if (fun == cfun && ! filter)
     {
-      filter = gen_reg_rtx (word_mode);
+      filter = gen_reg_rtx (targetm.eh_return_filter_mode ());
       fun->eh->filter = filter;
     }
   return filter;
@@ -1528,7 +1528,8 @@ build_post_landing_pads (void)
 			emit_cmp_and_jump_insns
 			  (cfun->eh->filter,
 			   GEN_INT (tree_low_cst (TREE_VALUE (flt_node), 0)),
-			   EQ, NULL_RTX, word_mode, 0, c->label);
+			   EQ, NULL_RTX, 
+			   targetm.eh_return_filter_mode (), 0, c->label);
 
 			tp_node = TREE_CHAIN (tp_node);
 			flt_node = TREE_CHAIN (flt_node);
@@ -1560,7 +1561,8 @@ build_post_landing_pads (void)
 
 	  emit_cmp_and_jump_insns (cfun->eh->filter,
 				   GEN_INT (region->u.allowed.filter),
-				   EQ, NULL_RTX, word_mode, 0, region->label);
+				   EQ, NULL_RTX, 
+				   targetm.eh_return_filter_mode (), 0, region->label);
 
 	  /* We delay the generation of the _Unwind_Resume until we generate
 	     landing pads.  We emit a marker here so as to get good control
@@ -1738,7 +1740,8 @@ dw2_build_landing_pads (void)
       emit_move_insn (cfun->eh->exc_ptr,
 		      gen_rtx_REG (ptr_mode, EH_RETURN_DATA_REGNO (0)));
       emit_move_insn (cfun->eh->filter,
-		      gen_rtx_REG (word_mode, EH_RETURN_DATA_REGNO (1)));
+		      gen_rtx_REG (targetm.eh_return_filter_mode (), 
+				   EH_RETURN_DATA_REGNO (1)));
 
       seq = get_insns ();
       end_sequence ();

gcc/target-def.h

@@ -268,6 +268,9 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
    TARGET_SCHED_DFA_NEW_CYCLE,					\
    TARGET_SCHED_IS_COSTLY_DEPENDENCE}
 
+/* In except.c */
+#define TARGET_EH_RETURN_FILTER_MODE  default_eh_return_filter_mode;
+
 /* In tree.c.  */
 #define TARGET_MERGE_DECL_ATTRIBUTES merge_decl_attributes
 #define TARGET_MERGE_TYPE_ATTRIBUTES merge_type_attributes
@@ -436,6 +439,7 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 {						\
   TARGET_ASM_OUT,				\
   TARGET_SCHED,					\
+  TARGET_EH_RETURN_FILTER_MODE,			\
   TARGET_MERGE_DECL_ATTRIBUTES,			\
   TARGET_MERGE_TYPE_ATTRIBUTES,			\
   TARGET_ATTRIBUTE_TABLE,			\

gcc/target.h

@@ -276,6 +276,9 @@ struct gcc_target
     bool (* is_costly_dependence) (rtx, rtx, rtx, int, int);
   } sched;
 
+  /* Return machine mode for filter value. */
+  enum machine_mode (* eh_return_filter_mode) (void);
+
   /* Given two decls, merge their attributes and return the result.  */
   tree (* merge_decl_attributes) (tree, tree);
 

gcc/targhooks.c

@@ -128,6 +128,12 @@ default_pretend_outgoing_varargs_named (CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED)
 	  != default_setup_incoming_varargs);
 }
 
+enum machine_mode 
+default_eh_return_filter_mode (void)
+{
+  return word_mode;
+}
+
 /* Generic hook that takes a CUMULATIVE_ARGS pointer and returns true.  */
 
 bool

gcc/targhooks.h

@@ -31,6 +31,8 @@ extern rtx default_builtin_setjmp_frame_value (void);
 extern bool hook_bool_CUMULATIVE_ARGS_false (CUMULATIVE_ARGS *);
 extern bool default_pretend_outgoing_varargs_named (CUMULATIVE_ARGS *);
 
+extern enum machine_mode default_eh_return_filter_mode (void);
+
 extern bool hook_bool_CUMULATIVE_ARGS_true (CUMULATIVE_ARGS *);
 extern tree default_cxx_guard_type (void);
 extern tree default_cxx_get_cookie_size (tree);