Update the tensor.pack tests to not fuse inputs and pack ops. (#12879)

build_tools/cmake/test_riscv.sh

diff --git a/build_tools/cmake/test_riscv.sh b/build_tools/cmake/test_riscv.sh
index 9ebecec..74f0480 100755
--- a/build_tools/cmake/test_riscv.sh
+++ b/build_tools/cmake/test_riscv.sh
@@ -90,6 +90,7 @@
 test_exclude_args+=(
   # TODO(#12703): Enable the test.
   "iree/tests/e2e/matmul/e2e_matmul_mmt4d_i8_small_llvm-cpu_local-task"
+  "iree/tests/e2e/tensor_ops/check_llvm-cpu_local-task_pack_dynamic_inner_tiles.mlir"
 )
 
 tests_label_exclude_regex="($(IFS="|" ; echo "${label_exclude_args[*]}"))"

tests/e2e/tensor_ops/pack.mlir

diff --git a/tests/e2e/tensor_ops/pack.mlir b/tests/e2e/tensor_ops/pack.mlir
index 9a33804..3837d2e 100644
--- a/tests/e2e/tensor_ops/pack.mlir
+++ b/tests/e2e/tensor_ops/pack.mlir
@@ -12,7 +12,10 @@
       %linearized_i32 = arith.index_cast %linearized : index to i32
       linalg.yield %linearized_i32 : i32
   } -> tensor<?x?xi32>
-  return %source : tensor<?x?xi32>
+  // This blocks the fusion for inputs and testing ops.
+  %0 = util.optimization_barrier %source : tensor<?x?xi32>
+  %1 = flow.tensor.tie_shape %0 : tensor<?x?xi32>{%height, %width}
+  return %1 : tensor<?x?xi32>
 }
 
 func.func @static_pack_simple() {

tests/e2e/tensor_ops/pack_dynamic_inner_tiles.mlir

diff --git a/tests/e2e/tensor_ops/pack_dynamic_inner_tiles.mlir b/tests/e2e/tensor_ops/pack_dynamic_inner_tiles.mlir
index c8b7ee8..a2b1b5c 100644
--- a/tests/e2e/tensor_ops/pack_dynamic_inner_tiles.mlir
+++ b/tests/e2e/tensor_ops/pack_dynamic_inner_tiles.mlir
@@ -12,7 +12,10 @@
       %linearized_i32 = arith.index_cast %linearized : index to i32
       linalg.yield %linearized_i32 : i32
   } -> tensor<?x?xi32>
-  return %source : tensor<?x?xi32>
+  // This blocks the fusion for inputs and testing ops.
+  %0 = util.optimization_barrier %source : tensor<?x?xi32>
+  %1 = flow.tensor.tie_shape %0 : tensor<?x?xi32>{%height, %width}
+  return %1 : tensor<?x?xi32>
 }
 
 func.func @fully_dynamic_pack_simple() {