tcg: Replace tcg_const_i64 in tcg-op.c

These three instances got missed in previous conversion.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c
index 1a039a2..ddab20a 100644
--- a/tcg/tcg-op.c
+++ b/tcg/tcg-op.c
@@ -1563,9 +1563,7 @@
     } else if (is_power_of_2(arg2)) {
         tcg_gen_shli_i64(ret, arg1, ctz64(arg2));
     } else {
-        TCGv_i64 t0 = tcg_const_i64(arg2);
-        tcg_gen_mul_i64(ret, arg1, t0);
-        tcg_temp_free_i64(t0);
+        tcg_gen_mul_i64(ret, arg1, tcg_constant_i64(arg2));
     }
 }
 
@@ -1962,9 +1960,7 @@
         tcg_gen_movi_i32(TCGV_HIGH(ret), 0);
         tcg_temp_free_i32(t);
     } else {
-        TCGv_i64 t0 = tcg_const_i64(arg2);
-        tcg_gen_clz_i64(ret, arg1, t0);
-        tcg_temp_free_i64(t0);
+        tcg_gen_clz_i64(ret, arg1, tcg_constant_i64(arg2));
     }
 }
 
@@ -2016,9 +2012,7 @@
         tcg_gen_ctpop_i64(ret, t);
         tcg_temp_free_i64(t);
     } else {
-        TCGv_i64 t0 = tcg_const_i64(arg2);
-        tcg_gen_ctz_i64(ret, arg1, t0);
-        tcg_temp_free_i64(t0);
+        tcg_gen_ctz_i64(ret, arg1, tcg_constant_i64(arg2));
     }
 }