tcg/loongarch64: Implement deposit/extract 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: <20211221054105.178795-14-git@xen0n.name>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg/loongarch64/tcg-target-con-set.h

@@ -18,3 +18,4 @@ C_O0_I1(r)
 C_O1_I1(r, r)
 C_O1_I2(r, r, rC)
 C_O1_I2(r, r, rU)
+C_O1_I2(r, 0, rZ)

tcg/loongarch64/tcg-target.c.inc

@@ -531,6 +531,20 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
         }
         break;
 
+    case INDEX_op_extract_i32:
+        tcg_out_opc_bstrpick_w(s, a0, a1, a2, a2 + args[3] - 1);
+        break;
+    case INDEX_op_extract_i64:
+        tcg_out_opc_bstrpick_d(s, a0, a1, a2, a2 + args[3] - 1);
+        break;
+
+    case INDEX_op_deposit_i32:
+        tcg_out_opc_bstrins_w(s, a0, a2, args[3], args[3] + args[4] - 1);
+        break;
+    case INDEX_op_deposit_i64:
+        tcg_out_opc_bstrins_d(s, a0, a2, args[3], args[3] + args[4] - 1);
+        break;
+
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_mov_i64:
     default:
@@ -560,6 +574,8 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
     case INDEX_op_ext_i32_i64:
     case INDEX_op_not_i32:
     case INDEX_op_not_i64:
+    case INDEX_op_extract_i32:
+    case INDEX_op_extract_i64:
         return C_O1_I1(r, r);
 
     case INDEX_op_andc_i32:
@@ -584,6 +600,11 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
         /* LoongArch reg-imm bitops have their imms ZERO-extended */
         return C_O1_I2(r, r, rU);
 
+    case INDEX_op_deposit_i32:
+    case INDEX_op_deposit_i64:
+        /* Must deposit into the same register as input */
+        return C_O1_I2(r, 0, rZ);
+
     default:
         g_assert_not_reached();
     }

tcg/loongarch64/tcg-target.h

@@ -97,8 +97,8 @@ typedef enum {
 #define TCG_TARGET_HAS_rem_i32          0
 #define TCG_TARGET_HAS_div2_i32         0
 #define TCG_TARGET_HAS_rot_i32          0
-#define TCG_TARGET_HAS_deposit_i32      0
-#define TCG_TARGET_HAS_extract_i32      0
+#define TCG_TARGET_HAS_deposit_i32      1
+#define TCG_TARGET_HAS_extract_i32      1
 #define TCG_TARGET_HAS_sextract_i32     0
 #define TCG_TARGET_HAS_extract2_i32     0
 #define TCG_TARGET_HAS_add2_i32         0
@@ -134,8 +134,8 @@ typedef enum {
 #define TCG_TARGET_HAS_rem_i64          0
 #define TCG_TARGET_HAS_div2_i64         0
 #define TCG_TARGET_HAS_rot_i64          0
-#define TCG_TARGET_HAS_deposit_i64      0
-#define TCG_TARGET_HAS_extract_i64      0
+#define TCG_TARGET_HAS_deposit_i64      1
+#define TCG_TARGET_HAS_extract_i64      1
 #define TCG_TARGET_HAS_sextract_i64     0
 #define TCG_TARGET_HAS_extract2_i64     0
 #define TCG_TARGET_HAS_extrl_i64_i32    1