tcg: Split out tcg_out_exit_tb

The INDEX_op_exit_tb opcode needs no register allocation.
Split out a dedicated helper function for it.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/tcg/tcg.c b/tcg/tcg.c
index 9b7df71..2574793 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -104,6 +104,7 @@ static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg1,
 static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg);
 static void tcg_out_movi(TCGContext *s, TCGType type,
                          TCGReg ret, tcg_target_long arg);
+static void tcg_out_exit_tb(TCGContext *s, uintptr_t arg);
 static void tcg_out_op(TCGContext *s, TCGOpcode opc,
                        const TCGArg args[TCG_MAX_OP_ARGS],
                        const int const_args[TCG_MAX_OP_ARGS]);
@@ -4718,6 +4719,9 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb, target_ulong pc_start)
         case INDEX_op_call:
             tcg_reg_alloc_call(s, op);
             break;
+        case INDEX_op_exit_tb:
+            tcg_out_exit_tb(s, op->args[0]);
+            break;
         case INDEX_op_dup2_vec:
             if (tcg_reg_alloc_dup2(s, op)) {
                 break;