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, 7 insertions, 4 deletions

diff --git a/tcg/arm/tcg-target.c.inc b/tcg/arm/tcg-target.c.inc
index 9245ea86d0..799cf13536 100644
--- a/tcg/arm/tcg-target.c.inc
+++ b/tcg/arm/tcg-target.c.inc
@@ -1933,6 +1933,12 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, bool is64)
 
 static void tcg_out_epilogue(TCGContext *s);
 
+static void tcg_out_exit_tb(TCGContext *s, uintptr_t arg)
+{
+    tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R0, arg);
+    tcg_out_epilogue(s);
+}
+
 static void tcg_out_op(TCGContext *s, TCGOpcode opc,
                        const TCGArg args[TCG_MAX_OP_ARGS],
                        const int const_args[TCG_MAX_OP_ARGS])
@@ -1941,10 +1947,6 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     int c;
 
     switch (opc) {
-    case INDEX_op_exit_tb:
-        tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R0, args[0]);
-        tcg_out_epilogue(s);
-        break;
     case INDEX_op_goto_tb:
         {
             /* Indirect jump method */
@@ -2256,6 +2258,7 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
 
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_call:     /* Always emitted via tcg_out_call.  */
+    case INDEX_op_exit_tb:  /* Always emitted via tcg_out_exit_tb.  */
     default:
         tcg_abort();
     }