tcg/tci: Merge INDEX_op_ld16u_{i32,i64}

Eliminating a TODO for ld16u_i32.

Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
diff --git a/tcg/tci.c b/tcg/tci.c
index c31be1a..b64d611 100644
--- a/tcg/tci.c
+++ b/tcg/tci.c
@@ -593,8 +593,11 @@
             t2 = tci_read_s32(&tb_ptr);
             tci_write_reg(regs, t0, *(int8_t *)(t1 + t2));
             break;
-        case INDEX_op_ld16u_i32:
-            TODO();
+        CASE_32_64(ld16u)
+            t0 = *tb_ptr++;
+            t1 = tci_read_r(regs, &tb_ptr);
+            t2 = tci_read_s32(&tb_ptr);
+            tci_write_reg(regs, t0, *(uint16_t *)(t1 + t2));
             break;
         case INDEX_op_ld16s_i32:
             t0 = *tb_ptr++;
@@ -858,12 +861,6 @@
 
             /* Load/store operations (64 bit). */
 
-        case INDEX_op_ld16u_i64:
-            t0 = *tb_ptr++;
-            t1 = tci_read_r(regs, &tb_ptr);
-            t2 = tci_read_s32(&tb_ptr);
-            tci_write_reg(regs, t0, *(uint16_t *)(t1 + t2));
-            break;
         case INDEX_op_ld16s_i64:
             TODO();
             break;