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

1 files changed, 16 insertions, 10 deletions

diff --git a/gcc/config/m32r/m32r.c b/gcc/config/m32r/m32r.c
index 6c4a5dd..c46bff5 100644
--- a/gcc/config/m32r/m32r.c
+++ b/gcc/config/m32r/m32r.c
@@ -99,6 +99,8 @@ static void m32r_setup_incoming_varargs (CUMULATIVE_ARGS *, enum machine_mode,
 					 tree, int *, int);
 static void init_idents (void);
 static bool m32r_rtx_costs (rtx, int, int, int *);
+static bool m32r_pass_by_reference (CUMULATIVE_ARGS *, enum machine_mode,
+				    tree, bool);
 
 /* Initialize the GCC target structure.  */
 #undef  TARGET_ATTRIBUTE_TABLE
@@ -142,6 +144,8 @@ static bool m32r_rtx_costs (rtx, int, int, int *);
 #define TARGET_SETUP_INCOMING_VARARGS m32r_setup_incoming_varargs
 #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 m32r_pass_by_reference
 
 struct gcc_target targetm = TARGET_INITIALIZER;
 
@@ -969,19 +973,21 @@ large_insn_p (rtx op, enum machine_mode mode ATTRIBUTE_UNUSED)
   return get_attr_length (op) != 2;
 }
 
-/* Return nonzero if TYPE must be passed or returned in memory.
-   The m32r treats both directions the same so we handle both directions
-   in this function.  */
+/* Return nonzero if TYPE must be passed by indirect reference.  */
 
-int
-m32r_pass_by_reference (tree type)
+static bool
+m32r_pass_by_reference (CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED,
+			enum machine_mode mode, tree type,
+			bool named ATTRIBUTE_UNUSED)
 {
-  int size = int_size_in_bytes (type);
+  int size;
 
-  if (size < 0 || size > 8)
-    return 1;
+  if (type)
+    size = int_size_in_bytes (type);
+  else
+    size = GET_MODE_SIZE (mode);
 
-  return 0;
+  return (size < 0 || size > 8);
 }
 
 /* Comparisons.  */
@@ -1347,7 +1353,7 @@ function_arg_partial_nregs (CUMULATIVE_ARGS *cum, enum machine_mode mode,
 static bool
 m32r_return_in_memory (tree type, tree fntype ATTRIBUTE_UNUSED)
 {
-  return m32r_pass_by_reference (type);
+  return m32r_pass_by_reference (NULL, TYPE_MODE (type), type, false);
 }
 
 /* Do any needed setup for a variadic function.  For the M32R, we must