diff --git a/include/luisa/luisa-compute.h b/include/luisa/luisa-compute.h
index dcae0893a..a3795d0ee 100644
--- a/include/luisa/luisa-compute.h
+++ b/include/luisa/luisa-compute.h
@@ -1,243 +1,245 @@
-#pragma once
-
-#include <luisa/ast/ast2json.h>
-#include <luisa/ast/atomic_ref_node.h>
-#include <luisa/ast/attribute.h>
-#include <luisa/ast/callable_library.h>
-#include <luisa/ast/constant_data.h>
-#include <luisa/ast/expression.h>
-#include <luisa/ast/external_function.h>
-#include <luisa/ast/function.h>
-#include <luisa/ast/function_builder.h>
-#include <luisa/ast/interface.h>
-#include <luisa/ast/op.h>
-#include <luisa/ast/statement.h>
-#include <luisa/ast/type.h>
-#include <luisa/ast/type_registry.h>
-#include <luisa/ast/usage.h>
-#include <luisa/ast/variable.h>
-
-#ifdef LUISA_ENABLE_CLANGCXX
-#include <luisa/clangcxx/ast.h>
-#include <luisa/clangcxx/compiler.h>
-#endif
-
-#include <luisa/core/basic_traits.h>
-#include <luisa/core/basic_types.h>
-#include <luisa/core/binary_buffer.h>
-#include <luisa/core/binary_file_stream.h>
-#include <luisa/core/binary_io.h>
-#include <luisa/core/clock.h>
-#include <luisa/core/concepts.h>
-#include <luisa/core/constants.h>
-#include <luisa/core/dll_export.h>
-#include <luisa/core/dynamic_module.h>
-#include <luisa/core/fiber.h>
-#include <luisa/core/first_fit.h>
-#include <luisa/core/forget.h>
-#include <luisa/core/intrin.h>
-#include <luisa/core/logging.h>
-#include <luisa/core/macro.h>
-#include <luisa/core/magic_enum.h>
-#include <luisa/core/mathematics.h>
-#include <luisa/core/platform.h>
-#include <luisa/core/pool.h>
-#include <luisa/core/shared_function.h>
-#include <luisa/core/spin_mutex.h>
-#include <luisa/core/stl.h>
-#include <luisa/core/string_scratch.h>
-#include <luisa/core/thread_safety.h>
-
-#ifdef LUISA_ENABLE_DSL
-#include <luisa/dsl/arg.h>
-#include <luisa/dsl/atomic.h>
-#include <luisa/dsl/binding_group.h>
-#include <luisa/dsl/builtin.h>
-#include <luisa/dsl/callable_library.h>
-#include <luisa/dsl/constant.h>
-#include <luisa/dsl/dispatch_indirect.h>
-#include <luisa/dsl/expr.h>
-#include <luisa/dsl/expr_traits.h>
-#include <luisa/dsl/func.h>
-#include <luisa/dsl/local.h>
-#include <luisa/dsl/operators.h>
-#include <luisa/dsl/polymorphic.h>
-#include <luisa/dsl/raster/raster_func.h>
-#include <luisa/dsl/raster/raster_kernel.h>
-#include <luisa/dsl/ref.h>
-#include <luisa/dsl/resource.h>
-#include <luisa/dsl/rtx/aabb.h>
-#include <luisa/dsl/rtx/accel.h>
-#include <luisa/dsl/rtx/curve.h>
-#include <luisa/dsl/rtx/hit.h>
-#include <luisa/dsl/rtx/motion.h>
-#include <luisa/dsl/rtx/ray.h>
-#include <luisa/dsl/rtx/ray_query.h>
-#include <luisa/dsl/rtx/triangle.h>
-#include <luisa/dsl/shared.h>
-#include <luisa/dsl/soa.h>
-#include <luisa/dsl/stmt.h>
-#include <luisa/dsl/struct.h>
-#include <luisa/dsl/sugar.h>
-#include <luisa/dsl/syntax.h>
-#include <luisa/dsl/var.h>
-#endif
-
-#ifdef LUISA_ENABLE_GUI
-#include <luisa/gui/framerate.h>
-#include <luisa/gui/imgui_window.h>
-#include <luisa/gui/input.h>
-#include <luisa/gui/window.h>
-#endif
-
-#ifdef LUISA_ENABLE_IR
-#include <luisa/ir/ast2ir.h>
-#include <luisa/ir/fwd.h>
-#include <luisa/ir/ir2ast.h>
-#include <luisa/ir/transform.h>
-#endif
-
-#include <luisa/osl/hint.h>
-#include <luisa/osl/instruction.h>
-#include <luisa/osl/literal.h>
-#include <luisa/osl/oso_parser.h>
-#include <luisa/osl/shader.h>
-#include <luisa/osl/symbol.h>
-#include <luisa/osl/type.h>
-
-#include <luisa/runtime/bindless_array.h>
-#include <luisa/runtime/buffer.h>
-#include <luisa/runtime/buffer_arena.h>
-#include <luisa/runtime/byte_buffer.h>
-#include <luisa/runtime/command_list.h>
-#include <luisa/runtime/context.h>
-#include <luisa/runtime/depth_format.h>
-#include <luisa/runtime/device.h>
-#include <luisa/runtime/dispatch_buffer.h>
-#include <luisa/runtime/event.h>
-#include <luisa/runtime/image.h>
-#include <luisa/runtime/mipmap.h>
-#include <luisa/runtime/raster/app_data.h>
-#include <luisa/runtime/raster/depth_buffer.h>
-#include <luisa/runtime/raster/raster_scene.h>
-#include <luisa/runtime/raster/raster_shader.h>
-#include <luisa/runtime/raster/raster_state.h>
-#include <luisa/runtime/raster/vertex_attribute.h>
-#include <luisa/runtime/raster/viewport.h>
-#include <luisa/runtime/remote/client_interface.h>
-#include <luisa/runtime/remote/server_interface.h>
-#include <luisa/runtime/rhi/argument.h>
-#include <luisa/runtime/rhi/command.h>
-#include <luisa/runtime/rhi/command_encoder.h>
-#include <luisa/runtime/rhi/curve_basis.h>
-#include <luisa/runtime/rhi/device_interface.h>
-#include <luisa/runtime/rhi/pixel.h>
-#include <luisa/runtime/rhi/resource.h>
-#include <luisa/runtime/rhi/sampler.h>
-#include <luisa/runtime/rhi/stream_tag.h>
-#include <luisa/runtime/rhi/tile_modification.h>
-#include <luisa/runtime/rtx/aabb.h>
-#include <luisa/runtime/rtx/accel.h>
-#include <luisa/runtime/rtx/curve.h>
-#include <luisa/runtime/rtx/hit.h>
-#include <luisa/runtime/rtx/mesh.h>
-#include <luisa/runtime/rtx/motion_instance.h>
-#include <luisa/runtime/rtx/motion_transform.h>
-#include <luisa/runtime/rtx/procedural_primitive.h>
-#include <luisa/runtime/rtx/ray.h>
-#include <luisa/runtime/rtx/triangle.h>
-#include <luisa/runtime/shader.h>
-#include <luisa/runtime/sparse_buffer.h>
-#include <luisa/runtime/sparse_command_list.h>
-#include <luisa/runtime/sparse_heap.h>
-#include <luisa/runtime/sparse_image.h>
-#include <luisa/runtime/sparse_texture.h>
-#include <luisa/runtime/sparse_volume.h>
-#include <luisa/runtime/stream.h>
-#include <luisa/runtime/stream_event.h>
-#include <luisa/runtime/swapchain.h>
-#include <luisa/runtime/volume.h>
-
-#ifdef LUISA_ENABLE_RUST
-#include <luisa/rust/api_types.h>
-#include <luisa/rust/api_types.hpp>
-#include <luisa/rust/ir.hpp>
-#include <luisa/rust/ir_common.h>
-#endif
-
-#ifdef LUISA_ENABLE_TENSOR
-#include <luisa/tensor/scope.h>
-#include <luisa/tensor/tensor.h>
-#endif
-
-#include <luisa/vstl/allocate_type.h>
-#include <luisa/vstl/arena_hash_map.h>
-#include <luisa/vstl/common.h>
-#include <luisa/vstl/compare.h>
-#include <luisa/vstl/config.h>
-#include <luisa/vstl/functional.h>
-#include <luisa/vstl/hash.h>
-#include <luisa/vstl/hash_map.h>
-#include <luisa/vstl/lmdb.hpp>
-#include <luisa/vstl/lockfree_array_queue.h>
-#include <luisa/vstl/log.h>
-#include <luisa/vstl/md5.h>
-#include <luisa/vstl/memory.h>
-#include <luisa/vstl/meta_lib.h>
-#include <luisa/vstl/pool.h>
-#include <luisa/vstl/ranges.h>
-#include <luisa/vstl/spin_mutex.h>
-#include <luisa/vstl/stack_allocator.h>
-#include <luisa/vstl/string_hash.h>
-#include <luisa/vstl/string_utility.h>
-#include <luisa/vstl/tree_map_base.h>
-#include <luisa/vstl/unique_ptr.h>
-#include <luisa/vstl/v_allocator.h>
-#include <luisa/vstl/v_guid.h>
-#include <luisa/vstl/vector.h>
-#include <luisa/vstl/vstring.h>
-
-#ifdef LUISA_ENABLE_XIR
-#include <luisa/xir/argument.h>
-#include <luisa/xir/basic_block.h>
-#include <luisa/xir/builder.h>
-#include <luisa/xir/constant.h>
-#include <luisa/xir/function.h>
-#include <luisa/xir/ilist.h>
-#include <luisa/xir/instruction.h>
-#include <luisa/xir/instructions/alloca.h>
-#include <luisa/xir/instructions/assert.h>
-#include <luisa/xir/instructions/assume.h>
-#include <luisa/xir/instructions/branch.h>
-#include <luisa/xir/instructions/break.h>
-#include <luisa/xir/instructions/call.h>
-#include <luisa/xir/instructions/cast.h>
-#include <luisa/xir/instructions/continue.h>
-#include <luisa/xir/instructions/gep.h>
-#include <luisa/xir/instructions/if.h>
-#include <luisa/xir/instructions/intrinsic.h>
-#include <luisa/xir/instructions/load.h>
-#include <luisa/xir/instructions/loop.h>
-#include <luisa/xir/instructions/outline.h>
-#include <luisa/xir/instructions/phi.h>
-#include <luisa/xir/instructions/print.h>
-#include <luisa/xir/instructions/ray_query.h>
-#include <luisa/xir/instructions/return.h>
-#include <luisa/xir/instructions/store.h>
-#include <luisa/xir/instructions/switch.h>
-#include <luisa/xir/instructions/unreachable.h>
-#include <luisa/xir/metadata.h>
-#include <luisa/xir/metadata/comment.h>
-#include <luisa/xir/metadata/location.h>
-#include <luisa/xir/metadata/name.h>
-#include <luisa/xir/module.h>
-#include <luisa/xir/pool.h>
-#include <luisa/xir/translators/ast2xir.h>
-#include <luisa/xir/translators/json2xir.h>
-#include <luisa/xir/translators/xir2json.h>
-#include <luisa/xir/translators/xir2text.h>
-#include <luisa/xir/use.h>
-#include <luisa/xir/user.h>
-#include <luisa/xir/value.h>
-#endif
-
+#pragma once
+
+#include <luisa/ast/ast2json.h>
+#include <luisa/ast/atomic_ref_node.h>
+#include <luisa/ast/attribute.h>
+#include <luisa/ast/callable_library.h>
+#include <luisa/ast/constant_data.h>
+#include <luisa/ast/expression.h>
+#include <luisa/ast/external_function.h>
+#include <luisa/ast/function.h>
+#include <luisa/ast/function_builder.h>
+#include <luisa/ast/interface.h>
+#include <luisa/ast/op.h>
+#include <luisa/ast/statement.h>
+#include <luisa/ast/type.h>
+#include <luisa/ast/type_registry.h>
+#include <luisa/ast/usage.h>
+#include <luisa/ast/variable.h>
+
+#ifdef LUISA_ENABLE_CLANGCXX
+#include <luisa/clangcxx/ast.h>
+#include <luisa/clangcxx/compiler.h>
+#endif
+
+#include <luisa/core/basic_traits.h>
+#include <luisa/core/basic_types.h>
+#include <luisa/core/binary_buffer.h>
+#include <luisa/core/binary_file_stream.h>
+#include <luisa/core/binary_io.h>
+#include <luisa/core/clock.h>
+#include <luisa/core/concepts.h>
+#include <luisa/core/constants.h>
+#include <luisa/core/dll_export.h>
+#include <luisa/core/dynamic_module.h>
+#include <luisa/core/fiber.h>
+#include <luisa/core/first_fit.h>
+#include <luisa/core/forget.h>
+#include <luisa/core/intrin.h>
+#include <luisa/core/logging.h>
+#include <luisa/core/macro.h>
+#include <luisa/core/magic_enum.h>
+#include <luisa/core/mathematics.h>
+#include <luisa/core/platform.h>
+#include <luisa/core/pool.h>
+#include <luisa/core/shared_function.h>
+#include <luisa/core/spin_mutex.h>
+#include <luisa/core/stl.h>
+#include <luisa/core/string_scratch.h>
+#include <luisa/core/thread_safety.h>
+
+#ifdef LUISA_ENABLE_DSL
+#include <luisa/dsl/arg.h>
+#include <luisa/dsl/atomic.h>
+#include <luisa/dsl/binding_group.h>
+#include <luisa/dsl/builtin.h>
+#include <luisa/dsl/callable_library.h>
+#include <luisa/dsl/constant.h>
+#include <luisa/dsl/dispatch_indirect.h>
+#include <luisa/dsl/expr.h>
+#include <luisa/dsl/expr_traits.h>
+#include <luisa/dsl/func.h>
+#include <luisa/dsl/local.h>
+#include <luisa/dsl/operators.h>
+#include <luisa/dsl/polymorphic.h>
+#include <luisa/dsl/raster/raster_func.h>
+#include <luisa/dsl/raster/raster_kernel.h>
+#include <luisa/dsl/ref.h>
+#include <luisa/dsl/resource.h>
+#include <luisa/dsl/rtx/aabb.h>
+#include <luisa/dsl/rtx/accel.h>
+#include <luisa/dsl/rtx/curve.h>
+#include <luisa/dsl/rtx/hit.h>
+#include <luisa/dsl/rtx/motion.h>
+#include <luisa/dsl/rtx/ray.h>
+#include <luisa/dsl/rtx/ray_query.h>
+#include <luisa/dsl/rtx/triangle.h>
+#include <luisa/dsl/shared.h>
+#include <luisa/dsl/soa.h>
+#include <luisa/dsl/stmt.h>
+#include <luisa/dsl/struct.h>
+#include <luisa/dsl/sugar.h>
+#include <luisa/dsl/syntax.h>
+#include <luisa/dsl/var.h>
+#endif
+
+#ifdef LUISA_ENABLE_GUI
+#include <luisa/gui/framerate.h>
+#include <luisa/gui/imgui_window.h>
+#include <luisa/gui/input.h>
+#include <luisa/gui/window.h>
+#endif
+
+#ifdef LUISA_ENABLE_IR
+#include <luisa/ir/ast2ir.h>
+#include <luisa/ir/fwd.h>
+#include <luisa/ir/ir2ast.h>
+#include <luisa/ir/transform.h>
+#endif
+
+#include <luisa/osl/hint.h>
+#include <luisa/osl/instruction.h>
+#include <luisa/osl/literal.h>
+#include <luisa/osl/oso_parser.h>
+#include <luisa/osl/shader.h>
+#include <luisa/osl/symbol.h>
+#include <luisa/osl/type.h>
+
+#include <luisa/runtime/bindless_array.h>
+#include <luisa/runtime/buffer.h>
+#include <luisa/runtime/buffer_arena.h>
+#include <luisa/runtime/byte_buffer.h>
+#include <luisa/runtime/command_list.h>
+#include <luisa/runtime/context.h>
+#include <luisa/runtime/depth_format.h>
+#include <luisa/runtime/device.h>
+#include <luisa/runtime/dispatch_buffer.h>
+#include <luisa/runtime/event.h>
+#include <luisa/runtime/image.h>
+#include <luisa/runtime/mipmap.h>
+#include <luisa/runtime/raster/app_data.h>
+#include <luisa/runtime/raster/depth_buffer.h>
+#include <luisa/runtime/raster/raster_scene.h>
+#include <luisa/runtime/raster/raster_shader.h>
+#include <luisa/runtime/raster/raster_state.h>
+#include <luisa/runtime/raster/vertex_attribute.h>
+#include <luisa/runtime/raster/viewport.h>
+#include <luisa/runtime/remote/client_interface.h>
+#include <luisa/runtime/remote/server_interface.h>
+#include <luisa/runtime/rhi/argument.h>
+#include <luisa/runtime/rhi/command.h>
+#include <luisa/runtime/rhi/command_encoder.h>
+#include <luisa/runtime/rhi/curve_basis.h>
+#include <luisa/runtime/rhi/device_interface.h>
+#include <luisa/runtime/rhi/pixel.h>
+#include <luisa/runtime/rhi/resource.h>
+#include <luisa/runtime/rhi/sampler.h>
+#include <luisa/runtime/rhi/stream_tag.h>
+#include <luisa/runtime/rhi/tile_modification.h>
+#include <luisa/runtime/rtx/aabb.h>
+#include <luisa/runtime/rtx/accel.h>
+#include <luisa/runtime/rtx/curve.h>
+#include <luisa/runtime/rtx/hit.h>
+#include <luisa/runtime/rtx/mesh.h>
+#include <luisa/runtime/rtx/motion_instance.h>
+#include <luisa/runtime/rtx/motion_transform.h>
+#include <luisa/runtime/rtx/procedural_primitive.h>
+#include <luisa/runtime/rtx/ray.h>
+#include <luisa/runtime/rtx/triangle.h>
+#include <luisa/runtime/shader.h>
+#include <luisa/runtime/sparse_buffer.h>
+#include <luisa/runtime/sparse_command_list.h>
+#include <luisa/runtime/sparse_heap.h>
+#include <luisa/runtime/sparse_image.h>
+#include <luisa/runtime/sparse_texture.h>
+#include <luisa/runtime/sparse_volume.h>
+#include <luisa/runtime/stream.h>
+#include <luisa/runtime/stream_event.h>
+#include <luisa/runtime/swapchain.h>
+#include <luisa/runtime/volume.h>
+
+#ifdef LUISA_ENABLE_RUST
+#include <luisa/rust/api_types.h>
+#include <luisa/rust/api_types.hpp>
+#include <luisa/rust/ir.hpp>
+#include <luisa/rust/ir_common.h>
+#endif
+
+#ifdef LUISA_ENABLE_TENSOR
+#include <luisa/tensor/scope.h>
+#include <luisa/tensor/tensor.h>
+#endif
+
+#include <luisa/vstl/allocate_type.h>
+#include <luisa/vstl/arena_hash_map.h>
+#include <luisa/vstl/common.h>
+#include <luisa/vstl/compare.h>
+#include <luisa/vstl/config.h>
+#include <luisa/vstl/functional.h>
+#include <luisa/vstl/hash.h>
+#include <luisa/vstl/hash_map.h>
+#include <luisa/vstl/lmdb.hpp>
+#include <luisa/vstl/lockfree_array_queue.h>
+#include <luisa/vstl/log.h>
+#include <luisa/vstl/md5.h>
+#include <luisa/vstl/memory.h>
+#include <luisa/vstl/meta_lib.h>
+#include <luisa/vstl/pool.h>
+#include <luisa/vstl/ranges.h>
+#include <luisa/vstl/spin_mutex.h>
+#include <luisa/vstl/stack_allocator.h>
+#include <luisa/vstl/string_hash.h>
+#include <luisa/vstl/string_utility.h>
+#include <luisa/vstl/tree_map_base.h>
+#include <luisa/vstl/unique_ptr.h>
+#include <luisa/vstl/v_allocator.h>
+#include <luisa/vstl/v_guid.h>
+#include <luisa/vstl/vector.h>
+#include <luisa/vstl/vstring.h>
+
+#ifdef LUISA_ENABLE_XIR
+#include <luisa/xir/argument.h>
+#include <luisa/xir/basic_block.h>
+#include <luisa/xir/builder.h>
+#include <luisa/xir/constant.h>
+#include <luisa/xir/function.h>
+#include <luisa/xir/ilist.h>
+#include <luisa/xir/instruction.h>
+#include <luisa/xir/instructions/alloca.h>
+#include <luisa/xir/instructions/assert.h>
+#include <luisa/xir/instructions/assume.h>
+#include <luisa/xir/instructions/branch.h>
+#include <luisa/xir/instructions/break.h>
+#include <luisa/xir/instructions/call.h>
+#include <luisa/xir/instructions/cast.h>
+#include <luisa/xir/instructions/continue.h>
+#include <luisa/xir/instructions/gep.h>
+#include <luisa/xir/instructions/if.h>
+#include <luisa/xir/instructions/intrinsic.h>
+#include <luisa/xir/instructions/load.h>
+#include <luisa/xir/instructions/loop.h>
+#include <luisa/xir/instructions/outline.h>
+#include <luisa/xir/instructions/phi.h>
+#include <luisa/xir/instructions/print.h>
+#include <luisa/xir/instructions/ray_query.h>
+#include <luisa/xir/instructions/return.h>
+#include <luisa/xir/instructions/store.h>
+#include <luisa/xir/instructions/switch.h>
+#include <luisa/xir/instructions/unreachable.h>
+#include <luisa/xir/metadata.h>
+#include <luisa/xir/metadata/comment.h>
+#include <luisa/xir/metadata/location.h>
+#include <luisa/xir/metadata/name.h>
+#include <luisa/xir/module.h>
+#include <luisa/xir/passes/outline.h>
+#include <luisa/xir/passes/sink_alloca.h>
+#include <luisa/xir/pool.h>
+#include <luisa/xir/translators/ast2xir.h>
+#include <luisa/xir/translators/json2xir.h>
+#include <luisa/xir/translators/xir2json.h>
+#include <luisa/xir/translators/xir2text.h>
+#include <luisa/xir/use.h>
+#include <luisa/xir/user.h>
+#include <luisa/xir/value.h>
+#endif
+
diff --git a/include/luisa/xir/passes/sink_alloca.h b/include/luisa/xir/passes/sink_alloca.h
new file mode 100644
index 000000000..77f08456c
--- /dev/null
+++ b/include/luisa/xir/passes/sink_alloca.h
@@ -0,0 +1,17 @@
+#pragma once
+
+#include <luisa/core/stl/vector.h>
+#include <luisa/xir/module.h>
+
+namespace luisa::compute::xir {
+
+class AllocaInst;
+
+struct SinkAllocaInfo {
+    luisa::vector<AllocaInst *> sunken_alloca_insts;
+};
+
+LC_XIR_API SinkAllocaInfo sink_alloca_pass_run_on_function(Module *module, Function *function) noexcept;
+LC_XIR_API SinkAllocaInfo sink_alloca_pass_run_on_module(Module *module) noexcept;
+
+}// namespace luisa::compute::xir
diff --git a/src/xir/CMakeLists.txt b/src/xir/CMakeLists.txt
index 92b4bb18d..bb14d02fb 100644
--- a/src/xir/CMakeLists.txt
+++ b/src/xir/CMakeLists.txt
@@ -44,6 +44,7 @@ set(LUISA_COMPUTE_XIR_SOURCES
 
         # passes
         passes/outline.cpp
+        passes/sink_alloca.cpp
 )
 
 add_library(luisa-compute-xir SHARED ${LUISA_COMPUTE_XIR_SOURCES})
diff --git a/src/xir/passes/outline.cpp b/src/xir/passes/outline.cpp
index 6f035eac5..5173521a2 100644
--- a/src/xir/passes/outline.cpp
+++ b/src/xir/passes/outline.cpp
@@ -12,9 +12,8 @@ OutlineInfo outline_pass_run_on_module(Module *module) noexcept {
     for (auto &f : module->functions()) { functions.emplace_back(&f); }
     for (auto &f : module->functions()) {
         auto func_info = outline_pass_run_on_function(module, &f);
-
     }
     return info;
 }
 
-}
+}// namespace luisa::compute::xir
diff --git a/src/xir/passes/sink_alloca.cpp b/src/xir/passes/sink_alloca.cpp
new file mode 100644
index 000000000..b6869ad8e
--- /dev/null
+++ b/src/xir/passes/sink_alloca.cpp
@@ -0,0 +1,53 @@
+#include <luisa/core/logging.h>
+#include <luisa/xir/function.h>
+#include <luisa/xir/passes/sink_alloca.h>
+
+namespace luisa::compute::xir {
+
+class AllocaInstSinker {
+
+private:
+    static void _collect_alloca_insts_in_block(luisa::vector<AllocaInst *> collected, BasicBlock *bb) noexcept {
+    }
+
+private:
+    [[nodiscard]] static bool _try_sink_alloca_inst(AllocaInst *inst) noexcept {
+    }
+
+public:
+    [[nodiscard]] static SinkAllocaInfo run(FunctionDefinition *f) noexcept {
+        luisa::vector<AllocaInst *> collected;
+        _collect_alloca_insts_in_block(collected, f->body_block());
+        collected.erase(std::remove_if(collected.begin(), collected.end(), [](AllocaInst *inst) noexcept {
+                            return !_try_sink_alloca_inst(inst);
+                        }),
+                        collected.end());
+        return {std::move(collected)};
+    }
+};
+
+SinkAllocaInfo sink_alloca_pass_run_on_function(Module *module, Function *function) noexcept {
+    return function->is_definition() ?
+               AllocaInstSinker::run(static_cast<FunctionDefinition *>(function)) :
+               SinkAllocaInfo{};
+}
+
+void merge_sink_alloca_info(SinkAllocaInfo &result, const SinkAllocaInfo &info) noexcept {
+    result.sunken_alloca_insts.reserve(result.sunken_alloca_insts.size() + info.sunken_alloca_insts.size());
+    for (auto inst : info.sunken_alloca_insts) {
+        result.sunken_alloca_insts.emplace_back(inst);
+    }
+}
+
+SinkAllocaInfo sink_alloca_pass_run_on_module(Module *module) noexcept {
+    SinkAllocaInfo info;
+    for (auto &f : module->functions()) {
+        if (f.is_definition()) {
+            auto func_info = sink_alloca_pass_run_on_function(module, &f);
+            merge_sink_alloca_info(info, func_info);
+        }
+    }
+    return info;
+}
+
+}// namespace luisa::compute::xir