add reordering test

Author: Sh0g0-1758

mlir/test/Conversion/Normalize/reorder.mlir

@@ -0,0 +1,21 @@
+// RUN: mlir-opt %s --normalize --mlir-use-nameloc-as-prefix 2>&1 | FileCheck %s
+
+// CHECK-LABEL:   func.func @bar(
+// CHECK-SAME:                   %[[ARG0:.*]]: i32) -> i32 {
+// CHECK:           %[[VAL_0:.*]] = arith.constant 2 : i32
+// CHECK:           %vl15831$51356--arg0$ = arith.addi %[[ARG0]], %[[VAL_0:.*]] : i32
+// CHECK:           %vl14084$187c2$ = arith.constant 6 : i32
+// CHECK:           %op27844$vl14084-vl15831$ = arith.addi %vl14084$187c2$, %vl15831$51356--arg0$ : i32
+// CHECK:           %vl14084$4c6ac$ = arith.constant 8 : i32
+// CHECK:           %op27844$op27844-vl14084$ = arith.addi %op27844$vl14084-vl15831$, %vl14084$4c6ac$ : i32
+// CHECK:           return %op27844$op27844-vl14084$ : i32
+// CHECK:         }
+func.func @bar(%a0: i32) -> i32 {
+  %c2 = arith.constant 2 : i32
+  %c6 = arith.constant 6 : i32
+  %c8 = arith.constant 8 : i32
+  %a = arith.addi %a0, %c2 : i32
+  %b = arith.addi %a, %c6 : i32
+  %c = arith.addi %b, %c8 : i32
+  func.return %c : i32
+}