tcg-sparc: Support trunc_shr_i32

Unlike a 64-bit shift op, allows the output to be in %l or %i registers
for sparcv8plus.
Signed-off-by: NRichard Henderson <rth@twiddle.net>

tcg/sparc/tcg-target.c

@@ -1482,6 +1482,13 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
     case INDEX_op_ext32u_i64:
         tcg_out_arithi(s, args[0], args[1], 0, SHIFT_SRL);
         break;
+    case INDEX_op_trunc_shr_i32:
+        if (args[2] == 0) {
+            tcg_out_mov(s, TCG_TYPE_I32, args[0], args[1]);
+        } else {
+            tcg_out_arithi(s, args[0], args[1], args[2], SHIFT_SRLX);
+        }
+        break;
 
     case INDEX_op_brcond_i64:
         tcg_out_brcond_i64(s, args[2], args[0], args[1], const_args[1],
@@ -1593,6 +1600,7 @@ static const TCGTargetOpDef sparc_op_defs[] = {
 
     { INDEX_op_ext32s_i64, { "r", "r" } },
     { INDEX_op_ext32u_i64, { "r", "r" } },
+    { INDEX_op_trunc_shr_i32,  { "r", "r" } },
 
     { INDEX_op_brcond_i64, { "rZ", "rJ" } },
     { INDEX_op_setcond_i64, { "r", "rZ", "rJ" } },

tcg/sparc/tcg-target.h

@@ -117,7 +117,7 @@ typedef enum {
 #define TCG_TARGET_HAS_mulsh_i32        0
 
 #if TCG_TARGET_REG_BITS == 64
-#define TCG_TARGET_HAS_trunc_shr_i32    0
+#define TCG_TARGET_HAS_trunc_shr_i32    1
 #define TCG_TARGET_HAS_div_i64          1
 #define TCG_TARGET_HAS_rem_i64          0
 #define TCG_TARGET_HAS_rot_i64          0