[gcc r13-6105] RISC-V: Remove "extern" for namespace [NFC]

[Kito Cheng <kito@gcc.gnu.org>]

https://gcc.gnu.org/g:3b6d44f459d28ab17d42967ce1c0490397e30e40

commit r13-6105-g3b6d44f459d28ab17d42967ce1c0490397e30e40
Author: Ju-Zhe Zhong <juzhe.zhong@rivai.ai>
Date:   Tue Feb 14 23:39:03 2023 +0800

    RISC-V: Remove "extern" for namespace [NFC]
    
    Just like other targets, aarch64_sve namespace in aarch64-protos.h
    arm_mve in arm-protos, nds namesace in nds32-protos.h
    
    They all don't have 'extern' in namespace.
    This is a NFC patch to make RISC-V be consistent with other targets.
    No functionality change.
    
    gcc/ChangeLog:
    
            * config/riscv/riscv-protos.h (riscv_run_selftests): Remove 'extern'.
            (init_builtins): Ditto.
            (mangle_builtin_type): Ditto.
            (verify_type_context): Ditto.
            (handle_pragma_vector):  Ditto.
            (builtin_decl): Ditto.
            (expand_builtin): Ditto.
            (const_vec_all_same_in_range_p): Ditto.
            (legitimize_move): Ditto.
            (emit_vlmax_op): Ditto.
            (emit_nonvlmax_op): Ditto.
            (get_vlmul): Ditto.
            (get_ratio): Ditto.
            (get_ta): Ditto.
            (get_ma): Ditto.
            (get_avl_type): Ditto.
            (calculate_ratio): Ditto.
            (enum vlmul_type): Ditto.
            (simm5_p): Ditto.
            (neg_simm5_p): Ditto.
            (has_vi_variant_p): Ditto.

Diff:
---
 gcc/config/riscv/riscv-protos.h | 40 ++++++++++++++++++++--------------------
 1 file changed, 20 insertions(+), 20 deletions(-)

diff --git a/gcc/config/riscv/riscv-protos.h b/gcc/config/riscv/riscv-protos.h
index ee8e903ddf5..81ad2eabc00 100644
--- a/gcc/config/riscv/riscv-protos.h
+++ b/gcc/config/riscv/riscv-protos.h
@@ -115,7 +115,7 @@ extern const riscv_cpu_info *riscv_find_cpu (const char *);
 /* Routines implemented in riscv-selftests.cc.  */
 #if CHECKING_P
 namespace selftest {
-extern void riscv_run_selftests (void);
+void riscv_run_selftests (void);
 } // namespace selftest
 #endif
 
@@ -141,24 +141,24 @@ enum avl_type
   VLMAX,
 };
 /* Routines implemented in riscv-vector-builtins.cc.  */
-extern void init_builtins (void);
-extern const char *mangle_builtin_type (const_tree);
+void init_builtins (void);
+const char *mangle_builtin_type (const_tree);
 #ifdef GCC_TARGET_H
-extern bool verify_type_context (location_t, type_context_kind, const_tree, bool);
+bool verify_type_context (location_t, type_context_kind, const_tree, bool);
 #endif
-extern void handle_pragma_vector (void);
-extern tree builtin_decl (unsigned, bool);
-extern rtx expand_builtin (unsigned int, tree, rtx);
-extern bool const_vec_all_same_in_range_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
-extern bool legitimize_move (rtx, rtx, machine_mode);
-extern void emit_vlmax_op (unsigned, rtx, rtx, machine_mode);
-extern void emit_nonvlmax_op (unsigned, rtx, rtx, rtx, machine_mode);
-extern enum vlmul_type get_vlmul (machine_mode);
-extern unsigned int get_ratio (machine_mode);
-extern int get_ta (rtx);
-extern int get_ma (rtx);
-extern int get_avl_type (rtx);
-extern unsigned int calculate_ratio (unsigned int, enum vlmul_type);
+void handle_pragma_vector (void);
+tree builtin_decl (unsigned, bool);
+rtx expand_builtin (unsigned int, tree, rtx);
+bool const_vec_all_same_in_range_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
+bool legitimize_move (rtx, rtx, machine_mode);
+void emit_vlmax_op (unsigned, rtx, rtx, machine_mode);
+void emit_nonvlmax_op (unsigned, rtx, rtx, rtx, machine_mode);
+enum vlmul_type get_vlmul (machine_mode);
+unsigned int get_ratio (machine_mode);
+int get_ta (rtx);
+int get_ma (rtx);
+int get_avl_type (rtx);
+unsigned int calculate_ratio (unsigned int, enum vlmul_type);
 enum tail_policy
 {
   TAIL_UNDISTURBED = 0,
@@ -176,10 +176,10 @@ enum tail_policy get_prefer_tail_policy ();
 enum mask_policy get_prefer_mask_policy ();
 rtx get_avl_type_rtx (enum avl_type);
 opt_machine_mode get_vector_mode (scalar_mode, poly_uint64);
-extern bool simm5_p (rtx);
-extern bool neg_simm5_p (rtx);
+bool simm5_p (rtx);
+bool neg_simm5_p (rtx);
 #ifdef RTX_CODE
-extern bool has_vi_variant_p (rtx_code, rtx);
+bool has_vi_variant_p (rtx_code, rtx);
 #endif
 }