target.h (struct gcc_target): Add calls.pass_by_reference.

	* target.h (struct gcc_target): Add calls.pass_by_reference.
	* target-def.h (TARGET_PASS_BY_REFERENCE): New.
	* function.c (pass_by_reference): Use the hook.
	* system.h (FUNCTION_ARG_PASS_BY_REFERENCE): Poison.
	* targhooks.c, targhooks.h (hook_pass_by_reference_false): New.
	(hook_pass_by_reference_must_pass_in_stack): New.
	* config/alpha/alpha.c (function_arg): Don't query pass-by-ref.
	(alpha_pass_by_reference): New.
	(TARGET_PASS_BY_REFERENCE): New.
	* config/alpha/alpha.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/arc/arc.c (arc_pass_by_reference): New.
	(TARGET_PASS_BY_REFERENCE): New.
	* config/arc/arc.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	(FUNCTION_ARG_CALLEE_COPIES): True.
	* config/arm/arm-protos.h (arm_function_arg_pass_by_reference): Remove.
	* config/arm/arm.c (TARGET_PASS_BY_REFERENCE): New.
	(arm_pass_by_reference): Rename from arm_function_arg_pass_by_reference.
	* config/arm/arm.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/c4x/c4x.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/cris/cris.c (cris_pass_by_reference): New.
	(TARGET_PASS_BY_REFERENCE): New.
	* config/cris/cris.h (FUNCTION_ARG): Don't query pass-by-ref.
	(FUNCTION_INCOMING_ARG, FUNCTION_ARG_ADVANCE): Likewise.
	(FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/fr30/fr30.c (TARGET_PASS_BY_REFERENCE): New.
	* config/fr30/fr30.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/frv/frv-protos.h (frv_function_arg_pass_by_reference): Kill.
	* config/frv/frv.c (TARGET_PASS_BY_REFERENCE): New.
	(frv_function_arg_pass_by_reference): Remove.
	* config/frv/frv.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/i386/i386-protos.h (function_arg_pass_by_reference): Remove.
	* config/i386/i386.c (TARGET_PASS_BY_REFERENCE): New.
	(ix86_pass_by_reference): Rename from function_arg_pass_by_reference.
	* config/i386/i386.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/ia64/ia64-protos.h (ia64_function_arg_pass_by_reference): Kill.
	* config/ia64/ia64.c (TARGET_PASS_BY_REFERENCE): New.
	(ia64_pass_by_reference): Rename from
	ia64_function_arg_pass_by_reference.
	* config/ia64/ia64.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/ip2k/ip2k.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/iq2000/iq2000-protos.h (function_arg_pass_by_reference): Kill.
	* config/iq2000/iq2000.c (TARGET_PASS_BY_REFERENCE): New.
	(iq2000_pass_by_reference): Rename from function_arg_pass_by_reference.
	* config/iq2000/iq2000.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	(FUNCTION_ARG_CALLEE_COPIES): Don't reference pass-by-ref.
	* config/m32r/m32r-protos.h (m32r_pass_by_reference): Remove.
	* config/m32r/m32r.c (TARGET_PASS_BY_REFERENCE): New.
	(m32r_pass_by_reference): Adjust prototype.  Make static.
	Handle mode sizes correctly.
	* config/m32r/m32r.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/m68hc11/m68hc11-protos.h, config/m68hc11/m68hc11.c
	(m68hc11_function_arg_pass_by_reference): Remove.
	* config/m68hc11/m68hc11.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	(FUNCTION_ARG_CALLEE_COPIES): Don't reference pass-by-ref.
	* config/mcore/mcore.c (TARGET_PASS_BY_REFERENCE): New.
	* config/mcore/mcore.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/mips/mips-protos.h (function_arg_pass_by_reference): Remove.
	* config/mips/mips.c (TARGET_PASS_BY_REFERENCE): New.
	(mips_va_arg): Use pass_by_reference.
	(mips_pass_by_reference): Rename from function_arg_pass_by_reference.
	Handle mode sizes correctly.
	* config/mips/mips.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
        (FUNCTION_ARG_CALLEE_COPIES): Don't reference pass-by-ref.
	* config/mmix/mmix-protos.h (mmix_function_arg_pass_by_reference): Kill.
	* config/mmix/mmix.c (TARGET_PASS_BY_REFERENCE): New.
	(mmix_pass_by_reference): Rename from
	mmix_function_arg_pass_by_reference.
	* config/mmix/mmix.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	(FUNCTION_ARG_CALLEE_COPIES): True.
	* config/mn10300/mn10300.c (TARGET_PASS_BY_REFERENCE): New.
	(mn10300_pass_by_reference): New.
	* config/mn10300/mn10300.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	(FUNCTION_ARG_CALLEE_COPIES): True.
	* config/pa/pa.c (pa_pass_by_reference): New.
	(TARGET_PASS_BY_REFERENCE): New.
	* config/pa/pa.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
        (FUNCTION_ARG_CALLEE_COPIES): True.
	* config/rs6000/rs6000-protos.h (function_arg_pass_by_reference): Kill.
	* config/rs6000/rs6000.c (TARGET_PASS_BY_REFERENCE): New.
	(rs6000_pass_by_reference): Rename from function_arg_pass_by_reference.
	* config/rs6000/rs6000.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/s390/s390-protos.h (s390_function_arg_pass_by_reference): Kill.
	* config/s390/s390.c (TARGET_PASS_BY_REFERENCE): New.
	(s390_pass_by_reference): Rename from
	s390_function_arg_pass_by_reference.
	(s390_function_arg_advance): Don't query pass-by-ref.
	(s390_function_arg): Likewise.
	(s390_gimplify_va_arg): Use pass_by_reference.
	(s390_call_saved_register_used): Likewise.
	* config/s390/s390.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/sh/sh.c (TARGET_PASS_BY_REFERENCE): New.
	(shcompact_byref, sh_pass_by_reference): New.
	* config/sh/sh.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	(SHCOMPACT_BYREF): Remove.
	* config/sparc/sparc-protos.h (function_arg_pass_by_reference): Kill.
	* config/sparc/sparc.c (TARGET_PASS_BY_REFERENCE): New.
	(sparc_pass_by_reference): Rename from function_arg_pass_by_reference.
	(sparc_gimplify_va_arg): Use pass_by_reference.
	* config/sparc/sparc.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/stormy16/stormy16.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	* config/v850/v850.c (TARGET_PASS_BY_REFERENCE): New.
	(v850_pass_by_reference): New.
	* config/v850/v850.h (FUNCTION_ARG_PASS_BY_REFERENCE): Remove.
	(FUNCTION_ARG_CALLEE_COPIES): True.
	* doc/tm.texi (TARGET_PASS_BY_REFERENCE): Update from
	FUNCTION_ARG_PASS_BY_REFERENCE docs.

From-SVN: r84672

3 files changed, 16 insertions, 16 deletions

diff --git a/gcc/config/mips/mips-protos.h b/gcc/config/mips/mips-protos.h
index f38809e..820d75f 100644
--- a/gcc/config/mips/mips-protos.h
+++ b/gcc/config/mips/mips-protos.h
@@ -181,8 +181,6 @@ extern void mips_expand_prologue (void);
 extern void mips_expand_epilogue (int);
 extern int mips_can_use_return_insn (void);
 extern struct rtx_def *mips_function_value (tree, tree, enum machine_mode);
-extern int function_arg_pass_by_reference (const CUMULATIVE_ARGS *,
-					   enum machine_mode, tree, int);
 
 extern bool mips_cannot_change_mode_class (enum machine_mode,
 					   enum machine_mode, enum reg_class);
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 3e93a01..02231f3 100644
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -290,6 +290,8 @@ static void mips_setup_incoming_varargs (CUMULATIVE_ARGS *, enum machine_mode,
 					 tree, int *, int);
 static tree mips_build_builtin_va_list (void);
 static tree mips_gimplify_va_arg_expr (tree, tree, tree *, tree *);
+static bool mips_pass_by_reference (CUMULATIVE_ARGS *, enum machine_mode mode,
+				    tree, bool);
 
 #if TARGET_IRIX
 static void irix_asm_named_section_1 (const char *, unsigned int,
@@ -744,6 +746,8 @@ const struct mips_cpu_info mips_cpu_info_table[] = {
 #define TARGET_STRICT_ARGUMENT_NAMING mips_strict_argument_naming
 #undef TARGET_MUST_PASS_IN_STACK
 #define TARGET_MUST_PASS_IN_STACK must_pass_in_stack_var_size
+#undef TARGET_PASS_BY_REFERENCE
+#define TARGET_PASS_BY_REFERENCE mips_pass_by_reference
 
 struct gcc_target targetm = TARGET_INITIALIZER;
 
@@ -4045,8 +4049,7 @@ mips_gimplify_va_arg_expr (tree valist, tree type, tree *pre_p, tree *post_p)
   tree addr;
   bool indirect;
 
-  indirect
-    = function_arg_pass_by_reference (NULL, TYPE_MODE (type), type, 0);
+  indirect = pass_by_reference (NULL, TYPE_MODE (type), type, 0);
 
   if (indirect)
     type = build_pointer_type (type);
@@ -7321,13 +7324,12 @@ mips_function_value (tree valtype, tree func ATTRIBUTE_UNUSED,
   return gen_rtx_REG (mode, GP_RETURN);
 }
 
-/* The implementation of FUNCTION_ARG_PASS_BY_REFERENCE.  Return
-   nonzero when an argument must be passed by reference.  */
+/* Return nonzero when an argument must be passed by reference.  */
 
-int
-function_arg_pass_by_reference (const CUMULATIVE_ARGS *cum ATTRIBUTE_UNUSED,
-				enum machine_mode mode, tree type,
-				int named ATTRIBUTE_UNUSED)
+static bool
+mips_pass_by_reference (CUMULATIVE_ARGS *cum ATTRIBUTE_UNUSED,
+			enum machine_mode mode, tree type,
+			bool named ATTRIBUTE_UNUSED)
 {
   if (mips_abi == ABI_EABI)
     {
@@ -7337,7 +7339,11 @@ function_arg_pass_by_reference (const CUMULATIVE_ARGS *cum ATTRIBUTE_UNUSED,
       if (type == NULL_TREE || mode == DImode || mode == DFmode)
 	return 0;
 
-      size = int_size_in_bytes (type);
+      if (type)
+        size = int_size_in_bytes (type);
+      else
+	size = GET_MODE_SIZE (mode);
+
       return size == -1 || size > UNITS_PER_WORD;
     }
   else
diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h
index 3517780..a4c7be9 100644
--- a/gcc/config/mips/mips.h
+++ b/gcc/config/mips/mips.h
@@ -2351,9 +2351,6 @@ typedef struct mips_args {
 		? PARM_BOUNDARY						\
 		: GET_MODE_ALIGNMENT(MODE)))
 
-#define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED)		\
-  function_arg_pass_by_reference (&CUM, MODE, TYPE, NAMED)
-
 #define FUNCTION_ARG_PADDING(MODE, TYPE)		\
   (mips_pad_arg_upward (MODE, TYPE) ? upward : downward)
 
@@ -2361,8 +2358,7 @@ typedef struct mips_args {
   (mips_pad_reg_upward (MODE, TYPE) ? upward : downward)
 
 #define FUNCTION_ARG_CALLEE_COPIES(CUM, MODE, TYPE, NAMED)		\
-  (mips_abi == ABI_EABI && (NAMED)					\
-   && FUNCTION_ARG_PASS_BY_REFERENCE (CUM, MODE, TYPE, NAMED))
+  (mips_abi == ABI_EABI && (NAMED))
 
 /* True if using EABI and varargs can be passed in floating-point
    registers.  Under these conditions, we need a more complex form