From 786ccc115f851962f3a7d234846a50f4af8aad64 Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Sat, 1 Aug 2026 13:37:56 +0800
Subject: [CodeGen] Add explicit MachineFunction cloning

Deep-clone the live MachineIR graph with deterministic identity maps while rebuilding CFG, def-use, ties, register configuration, and memory operand ownership. Verify both source and destination and omit detached arena history.
---
 backend/unittests/CodeGen/CMakeLists.txt | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'backend/unittests/CodeGen/CMakeLists.txt')

diff --git a/backend/unittests/CodeGen/CMakeLists.txt b/backend/unittests/CodeGen/CMakeLists.txt
index 6f17fc0..650cfa9 100644
--- a/backend/unittests/CodeGen/CMakeLists.txt
+++ b/backend/unittests/CodeGen/CMakeLists.txt
@@ -4,6 +4,7 @@ set(
   RCCBackendCodeGenTestSources
   CoreTypesTest.cpp
   InstructionDescriptorTest.cpp
+  MachineFunctionClonerTest.cpp
   MachineIRBuilderTest.cpp
   MachineIRCoreTest.cpp
   MachineVerifierTest.cpp
@@ -31,6 +32,21 @@ add_test(
   COMMAND RCCBackendCodeGenInstructionDescriptorTests
 )
 
+add_executable(
+  RCCBackendCodeGenMachineFunctionClonerTests
+  MachineFunctionClonerTest.cpp
+)
+rcc_backend_configure_target(RCCBackendCodeGenMachineFunctionClonerTests)
+target_link_libraries(
+  RCCBackendCodeGenMachineFunctionClonerTests
+  PRIVATE RCCBackend::CodeGen
+)
+
+add_test(
+  NAME RCCBackend.CodeGen.MachineFunctionCloner
+  COMMAND RCCBackendCodeGenMachineFunctionClonerTests
+)
+
 add_executable(RCCBackendCodeGenMachineIRBuilderTests MachineIRBuilderTest.cpp)
 rcc_backend_configure_target(RCCBackendCodeGenMachineIRBuilderTests)
 target_link_libraries(
@@ -76,6 +92,7 @@ add_test(
 rcc_backend_register_format_files(
   "${CMAKE_CURRENT_SOURCE_DIR}/CoreTypesTest.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/InstructionDescriptorTest.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/MachineFunctionClonerTest.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/MachineIRBuilderTest.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/MachineIRCoreTest.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/MachineVerifierTest.cpp"
@@ -84,6 +101,7 @@ rcc_backend_register_format_files(
 rcc_backend_register_tidy_files(
   "${CMAKE_CURRENT_SOURCE_DIR}/CoreTypesTest.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/InstructionDescriptorTest.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/MachineFunctionClonerTest.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/MachineIRBuilderTest.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/MachineIRCoreTest.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/MachineVerifierTest.cpp"
-- 
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