RISC-V: Unify the output asm pattern between gpr_save and gpr_restore pattern.

gcc/ChangeLog:

	* config/riscv/riscv-protos.h (riscv_output_gpr_save): Remove.
	* config/riscv/riscv-sr.c (riscv_sr_match_prologue): Update
	value.
	* config/riscv/riscv.c (riscv_output_gpr_save): Remove.
	* config/riscv/riscv.md (gpr_save): Update output asm pattern.

(cherry picked from commit dcf41a4e6033213f5e5f80da23080df961d83996)

gcc/config/riscv/riscv-protos.h

@@ -53,7 +53,6 @@ extern rtx riscv_subword (rtx, bool);
 extern bool riscv_split_64bit_move_p (rtx, rtx);
 extern void riscv_split_doubleword_move (rtx, rtx);
 extern const char *riscv_output_move (rtx, rtx);
-extern const char *riscv_output_gpr_save (unsigned);
 extern const char *riscv_output_return ();
 #ifdef RTX_CODE
 extern void riscv_expand_int_scc (rtx, enum rtx_code, rtx, rtx);

gcc/config/riscv/riscv-sr.c

@@ -115,7 +115,7 @@ riscv_sr_match_prologue (rtx_insn **body)
       && GET_CODE (XVECEXP (PATTERN (insn), 0, 0)) == UNSPEC_VOLATILE
       && (GET_CODE (XVECEXP (XVECEXP (PATTERN (insn), 0, 0), 0, 0))
 	  == CONST_INT)
-      && INTVAL (XVECEXP (XVECEXP (PATTERN (insn), 0, 0), 0, 0)) == 2)
+      && INTVAL (XVECEXP (XVECEXP (PATTERN (insn), 0, 0), 0, 0)) == 0)
     return insn;
 
   return NULL;

gcc/config/riscv/riscv.c

@@ -3874,20 +3874,6 @@ riscv_restore_reg (rtx reg, rtx mem)
   RTX_FRAME_RELATED_P (insn) = 1;
 }
 
-/* Return the code to invoke the GPR save routine.  */
-
-const char *
-riscv_output_gpr_save (unsigned mask)
-{
-  static char s[32];
-  unsigned n = riscv_save_libcall_count (mask);
-
-  ssize_t bytes = snprintf (s, sizeof (s), "call\tt0,__riscv_save_%u", n);
-  gcc_assert ((size_t) bytes < sizeof (s));
-
-  return s;
-}
-
 /* For stack frames that can't be allocated with a single ADDI instruction,
    compute the best value to initially allocate.  It must at a minimum
    allocate enough space to spill the callee-saved registers.  If TARGET_RVC,
@@ -5109,7 +5095,7 @@ riscv_gen_gpr_save_insn (struct riscv_frame_info *frame)
 
   RTVEC_ELT (vec, 0) =
     gen_rtx_UNSPEC_VOLATILE (VOIDmode,
-      gen_rtvec (1, GEN_INT (frame->mask)), UNSPECV_GPR_SAVE);
+      gen_rtvec (1, GEN_INT (count)), UNSPECV_GPR_SAVE);
 
   for (int i = 1; i < veclen; ++i)
     {

gcc/config/riscv/riscv.md

@@ -2423,7 +2423,7 @@
      [(unspec_volatile [(match_operand 0 "const_int_operand")]
 	               UNSPECV_GPR_SAVE)])]
   ""
-  { return riscv_output_gpr_save (INTVAL (operands[0])); })
+  "call\tt0,__riscv_save_%0")
 
 (define_insn "gpr_restore"
   [(unspec_volatile [(match_operand 0 "const_int_operand")] UNSPECV_GPR_RESTORE)]