tcg: Split out tcg_out_ext8u

We will need a backend interface for performing 8-bit zero-extend.
Use it in tcg_reg_alloc_op in the meantime.

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

1 files changed, 8 insertions, 1 deletions

diff --git a/tcg/mips/tcg-target.c.inc b/tcg/mips/tcg-target.c.inc
index 8fc9d02bd5..5a712e3da5 100644
--- a/tcg/mips/tcg-target.c.inc
+++ b/tcg/mips/tcg-target.c.inc
@@ -558,6 +558,11 @@ static void tcg_out_ext8s(TCGContext *s, TCGType type, TCGReg rd, TCGReg rs)
     tcg_out_opc_reg(s, OPC_SEB, rd, TCG_REG_ZERO, rs);
 }
 
+static void tcg_out_ext8u(TCGContext *s, TCGReg rd, TCGReg rs)
+{
+    tcg_out_opc_imm(s, OPC_ANDI, rd, rs, 0xff);
+}
+
 static void tcg_out_addi_ptr(TCGContext *s, TCGReg rd, TCGReg rs,
                              tcg_target_long imm)
 {
@@ -1099,7 +1104,7 @@ static int tcg_out_call_iarg_reg8(TCGContext *s, int i, TCGReg arg)
     if (i < ARRAY_SIZE(tcg_target_call_iarg_regs)) {
         tmp = tcg_target_call_iarg_regs[i];
     }
-    tcg_out_opc_imm(s, OPC_ANDI, tmp, arg, 0xff);
+    tcg_out_ext8u(s, tmp, arg);
     return tcg_out_call_iarg_reg(s, i, tmp);
 }
 
@@ -2423,6 +2428,8 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     case INDEX_op_goto_tb:  /* Always emitted via tcg_out_goto_tb.  */
     case INDEX_op_ext8s_i32:  /* Always emitted via tcg_reg_alloc_op.  */
     case INDEX_op_ext8s_i64:
+    case INDEX_op_ext8u_i32:
+    case INDEX_op_ext8u_i64:
     default:
         g_assert_not_reached();
     }