function.c (reference_callee_copied): New.

        * function.c (reference_callee_copied): New.
        (assign_parm_setup_reg): Use it.
        * calls.c (initialize_argument_information): Likewise.
        (emit_library_call_value_1): Likewise.
        * function.h (reference_callee_copied): Declare.

        * target.h (struct gcc_target): Add callee_copies.
        * target-def.h (TARGET_CALLEE_COPIES): New.
        (TARGET_PASS_BY_REFERENCE): Update default.
        * expr.h (FUNCTION_ARG_CALLEE_COPIES): Remove.
        * targhooks.c (hook_callee_copies_named): New.
        (hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false): Rename from
        hook_pass_by_reference_false.
        (hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true): New.
        * targhooks.h: Update decls.
        * config/arc/arc.c (TARGET_CALLEE_COPIES): New.
        * config/arc/arc.h (FUNCTION_ARG_CALLEE_COPIES): Remove.
        * config/frv/frv-protos.h (frv_function_arg_callee_copies): Remove.
        * config/frv/frv.c (frv_function_arg_callee_copies): Remove.
        * config/frv/frv.h (FUNCTION_ARG_CALLEE_COPIES): Remove.
        * config/iq2000/iq2000.c (TARGET_CALLEE_COPIES): New.
        * config/iq2000/iq2000.h (FUNCTION_ARG_CALLEE_COPIES): Remove.
        * config/m68hc11/m68hc11.c (TARGET_CALLEE_COPIES): New.
        * config/m68hc11/m68hc11.h (FUNCTION_ARG_CALLEE_COPIES): Remove.
        * config/mips/mips.c (TARGET_CALLEE_COPIES): New.
        (mips_callee_copies): New.
        * config/mips/mips.h (FUNCTION_ARG_CALLEE_COPIES): Remove.
        * config/mmix/mmix.c (TARGET_CALLEE_COPIES): New.
        * config/mmix/mmix.h (FUNCTION_ARG_CALLEE_COPIES): Remove.
        * config/mn10300/mn10300.c (TARGET_CALLEE_COPIES): New.
        * config/mn10300/mn10300.h (FUNCTION_ARG_CALLEE_COPIES): Remove.
        * config/pa/pa.c (TARGET_CALLEE_COPIES): New.
        * config/pa/pa.h (FUNCTION_ARG_CALLEE_COPIES): Remove.
        * config/sh/sh.c (sh_callee_copies): New.
        (TARGET_CALLEE_COPIES): New.
        * config/sh/sh.h (FUNCTION_ARG_CALLEE_COPIES): Remove.
        * config/v850/v850.c (TARGET_CALLEE_COPIES): New.
        * config/v850/v850.h (FUNCTION_ARG_CALLEE_COPIES): Remove.
        * doc/tm.texi (TARGET_CALLEE_COPIES): Replace documentation
        for FUNCTION_ARG_CALLEE_COPIES.
        * doc/rtl.texi (CALL_INSN_FUNCTION_USAGE): Update.

From-SVN: r87195

2 files changed, 2 insertions, 10 deletions

diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
index 9fc5ee2..90419f9 100644
--- a/gcc/config/arc/arc.c
+++ b/gcc/config/arc/arc.c
@@ -142,6 +142,8 @@ static bool arc_pass_by_reference (CUMULATIVE_ARGS *, enum machine_mode,
 #define TARGET_RETURN_IN_MEMORY arc_return_in_memory
 #undef TARGET_PASS_BY_REFERENCE
 #define TARGET_PASS_BY_REFERENCE arc_pass_by_reference
+#undef TARGET_CALLEE_COPIES
+#define TARGET_CALLEE_COPIES hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true
 
 #undef TARGET_SETUP_INCOMING_VARARGS
 #define TARGET_SETUP_INCOMING_VARARGS arc_setup_incoming_varargs
@@ -2356,4 +2358,3 @@ arc_pass_by_reference (CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED,
 
   return size > 8;
 }
-
diff --git a/gcc/config/arc/arc.h b/gcc/config/arc/arc.h
index eefac0c..6b94cd1 100644
--- a/gcc/config/arc/arc.h
+++ b/gcc/config/arc/arc.h
@@ -696,15 +696,6 @@ extern enum reg_class arc_regno_reg_class[FIRST_PSEUDO_REGISTER];
    registers.  */
 #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) 0
 
-/* A C expression that indicates when it is the called function's
-   responsibility to make copies of arguments passed by reference.
-   If the callee can determine that the argument won't be modified, it can
-   avoid the copy.  */
-/* ??? We'd love to be able to use NAMED here.  Unfortunately, it doesn't
-   include the last named argument so we keep track of the args ourselves.  */
-
-#define FUNCTION_ARG_CALLEE_COPIES(CUM, MODE, TYPE, NAMED) 1
-
 /* Update the data in CUM to advance over an argument
    of mode MODE and data type TYPE.
    (TYPE is null for libcalls where that information may not be available.)  */