tcg/loongarch64: Implement sign-/zero-extension ops

Signed-off-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211221054105.178795-12-git@xen0n.name>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 82 insertions, 0 deletions

diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
index 3a8c52465b..25b58c7828 100644
--- a/tcg/loongarch64/tcg-target.c.inc
+++ b/tcg/loongarch64/tcg-target.c.inc
@@ -382,6 +382,36 @@ static void tcg_out_movi(TCGContext *s, TCGType type, TCGReg rd,
     }
 }
 
+static void tcg_out_ext8u(TCGContext *s, TCGReg ret, TCGReg arg)
+{
+    tcg_out_opc_andi(s, ret, arg, 0xff);
+}
+
+static void tcg_out_ext16u(TCGContext *s, TCGReg ret, TCGReg arg)
+{
+    tcg_out_opc_bstrpick_w(s, ret, arg, 0, 15);
+}
+
+static void tcg_out_ext32u(TCGContext *s, TCGReg ret, TCGReg arg)
+{
+    tcg_out_opc_bstrpick_d(s, ret, arg, 0, 31);
+}
+
+static void tcg_out_ext8s(TCGContext *s, TCGReg ret, TCGReg arg)
+{
+    tcg_out_opc_sext_b(s, ret, arg);
+}
+
+static void tcg_out_ext16s(TCGContext *s, TCGReg ret, TCGReg arg)
+{
+    tcg_out_opc_sext_h(s, ret, arg);
+}
+
+static void tcg_out_ext32s(TCGContext *s, TCGReg ret, TCGReg arg)
+{
+    tcg_out_opc_addi_w(s, ret, arg, 0);
+}
+
 /*
  * Entry-points
  */
@@ -391,6 +421,7 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
                        const int const_args[TCG_MAX_OP_ARGS])
 {
     TCGArg a0 = args[0];
+    TCGArg a1 = args[1];
 
     switch (opc) {
     case INDEX_op_mb:
@@ -401,6 +432,41 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
         tcg_out_opc_jirl(s, TCG_REG_ZERO, a0, 0);
         break;
 
+    case INDEX_op_ext8s_i32:
+    case INDEX_op_ext8s_i64:
+        tcg_out_ext8s(s, a0, a1);
+        break;
+
+    case INDEX_op_ext8u_i32:
+    case INDEX_op_ext8u_i64:
+        tcg_out_ext8u(s, a0, a1);
+        break;
+
+    case INDEX_op_ext16s_i32:
+    case INDEX_op_ext16s_i64:
+        tcg_out_ext16s(s, a0, a1);
+        break;
+
+    case INDEX_op_ext16u_i32:
+    case INDEX_op_ext16u_i64:
+        tcg_out_ext16u(s, a0, a1);
+        break;
+
+    case INDEX_op_ext32u_i64:
+    case INDEX_op_extu_i32_i64:
+        tcg_out_ext32u(s, a0, a1);
+        break;
+
+    case INDEX_op_ext32s_i64:
+    case INDEX_op_extrl_i64_i32:
+    case INDEX_op_ext_i32_i64:
+        tcg_out_ext32s(s, a0, a1);
+        break;
+
+    case INDEX_op_extrh_i64_i32:
+        tcg_out_opc_srai_d(s, a0, a1, 32);
+        break;
+
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_mov_i64:
     default:
@@ -414,6 +480,22 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
     case INDEX_op_goto_ptr:
         return C_O0_I1(r);
 
+    case INDEX_op_ext8s_i32:
+    case INDEX_op_ext8s_i64:
+    case INDEX_op_ext8u_i32:
+    case INDEX_op_ext8u_i64:
+    case INDEX_op_ext16s_i32:
+    case INDEX_op_ext16s_i64:
+    case INDEX_op_ext16u_i32:
+    case INDEX_op_ext16u_i64:
+    case INDEX_op_ext32s_i64:
+    case INDEX_op_ext32u_i64:
+    case INDEX_op_extu_i32_i64:
+    case INDEX_op_extrl_i64_i32:
+    case INDEX_op_extrh_i64_i32:
+    case INDEX_op_ext_i32_i64:
+        return C_O1_I1(r, r);
+
     default:
         g_assert_not_reached();
     }