Make test clearer

Author: tblah

mlir/test/Target/LLVMIR/openmp-llvm.mlir

@@ -2702,22 +2702,22 @@ llvm.func @task(%arg0 : !llvm.ptr) {
 // CHECK:         %[[VAL_13:.*]] = getelementptr { ptr }, ptr %[[VAL_11]], i32 0, i32 0
 // CHECK:         %[[VAL_14:.*]] = load ptr, ptr %[[VAL_13]], align 8
 // CHECK:         %[[VAL_15:.*]] = alloca i32, i64 1, align 4
-// CHECK:         br label %[[VAL_16:.*]]
-// CHECK:       omp.private.latealloc:                            ; preds = %[[VAL_17:.*]]
-// CHECK:         br label %[[VAL_18:.*]]
-// CHECK:       omp.private.copy:                                 ; preds = %[[VAL_16]]
+// CHECK:         br label %omp.private.latealloc
+// CHECK:       omp.private.latealloc:                            ; preds = %task.alloca
+// CHECK:         br label %omp.private.copy
+// CHECK:       omp.private.copy:                                 ; preds = %omp.private.latealloc
 // CHECK:         %[[VAL_19:.*]] = load i32, ptr %[[VAL_14]], align 4
 // CHECK:         store i32 %[[VAL_19]], ptr %[[VAL_15]], align 4
 // CHECK:         br label %[[VAL_20:.*]]
-// CHECK:       task.body:                                        ; preds = %[[VAL_18]]
-// CHECK:         br label %[[VAL_21:.*]]
-// CHECK:       omp.task.region:                                  ; preds = %[[VAL_20]]
+// CHECK:       task.body:                                        ; preds = %omp.private.copy
+// CHECK:         br label %omp.task.region
+// CHECK:       omp.task.region:                                  ; preds = %task.body
 // CHECK:         call void @foo(ptr %[[VAL_15]])
-// CHECK:         br label %[[VAL_22:.*]]
-// CHECK:       omp.region.cont:                                  ; preds = %[[VAL_21]]
+// CHECK:         br label %omp.region.cont
+// CHECK:       omp.region.cont:                                  ; preds = %omp.task.region
 // CHECK:         call void @destroy(ptr %[[VAL_15]])
-// CHECK:         br label %[[VAL_23:.*]]
-// CHECK:       task.exit.exitStub:                               ; preds = %[[VAL_22]]
+// CHECK:         br label %task.exit.exitStub
+// CHECK:       task.exit.exitStub:                               ; preds = %omp.region.cont
 // CHECK:         ret void
 // -----