massive state space solver improvement: supercomp took ~10s, now ~40ms

achieved by imposing a 15 block limit on each board and changing the
internal representation from std::string to 4x uint64_t

CMakeLists.txt

@@ -4,20 +4,48 @@ project(MassSprings)
 set(CMAKE_CXX_STANDARD 26)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
+if(POLICY CMP0167)
+    cmake_policy(SET CMP0167 NEW)
+endif()
+
+option(DISABLE_BACKWARD "Disable backward stacktrace printer" OFF)
+option(DISABLE_TRACY "Disable the Tracy profiler client" ON)
+option(DISABLE_TESTS "Disable building and running tests" ON)
+
+# Headers + Sources
+set(SOURCES
+    src/backward.cpp
+    src/graph_distances.cpp
+    src/input_handler.cpp
+    src/mass_spring_system.cpp
+    src/octree.cpp
+    src/orbit_camera.cpp
+    src/renderer.cpp
+    src/state_manager.cpp
+    src/threaded_physics.cpp
+    src/user_interface.cpp
+    src/puzzle.cpp
+)
+
 # Libraries
 find_package(raylib REQUIRED)
-set(LIBS raylib)
+find_package(Boost REQUIRED)
+set(LIBS raylib Boost::headers)
 set(FLAGS "")
 
-if(NOT DEFINED DISABLE_BACKWARD)
+if(WIN32)
+    list(APPEND LIBS opengl32 gdi32 winmm)
+endif()
+
+include(FetchContent)
+if(NOT DISABLE_BACKWARD)
     find_package(Backward REQUIRED)
 
     list(APPEND LIBS Backward::Backward)
     list(APPEND FLAGS BACKWARD)
 endif()
 
-if(NOT DEFINED DISABLE_TRACY)
-    include(FetchContent)
+if(NOT DISABLE_TRACY)
     FetchContent_Declare(tracy
                          GIT_REPOSITORY https://github.com/wolfpld/tracy.git
                          GIT_TAG v0.11.1
@@ -32,14 +60,10 @@ if(NOT DEFINED DISABLE_TRACY)
     list(APPEND FLAGS TRACY)
 endif()
 
-if(WIN32)
-    list(APPEND LIBS opengl32 gdi32 winmm)
-endif()
-
 # Set this after fetching tracy to hide tracy's warnings
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wfloat-equal -Wundef -Wshadow -Wpointer-arith -Wcast-align -Wno-unused-parameter -Wunreachable-code")
-set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O2 -ggdb") # -fsanitize=address already fails on InitWindow(), -fsanitize=undefined, -fsanitize=leak
-set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Ofast")
+set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -ggdb -O0")
+set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -ggdb -Ofast -march=native")
 
 message("-- CMAKE_C_FLAGS: ${CMAKE_C_FLAGS}")
 message("-- CMAKE_C_FLAGS_DEBUG: ${CMAKE_C_FLAGS_DEBUG}")
@@ -48,40 +72,42 @@ message("-- CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")
 message("-- CMAKE_CXX_FLAGS_DEBUG: ${CMAKE_CXX_FLAGS_DEBUG}")
 message("-- CMAKE_CXX_FLAGS_RELEASE: ${CMAKE_CXX_FLAGS_RELEASE}")
 
-# Headers + Sources
-include_directories(include)
-set(SOURCES
-    src/backward.cpp
-    src/graph_distances.cpp
-    src/input_handler.cpp
-    src/main.cpp
-    src/mass_spring_system.cpp
-    src/octree.cpp
-    src/orbit_camera.cpp
-    src/threaded_physics.cpp
-    src/puzzle.cpp
-    src/renderer.cpp
-    src/state_manager.cpp
-    src/user_interface.cpp
-)
-
 # Main target
-add_executable(masssprings ${SOURCES})
-target_include_directories(masssprings PRIVATE ${RAYLIB_CPP_INCLUDE_DIR})
+add_executable(masssprings src/main.cpp ${SOURCES})
+target_include_directories(masssprings PRIVATE include)
 target_link_libraries(masssprings PRIVATE ${LIBS})
 target_compile_definitions(masssprings PRIVATE ${FLAGS})
 
+# Testing sources
+if(NOT DISABLE_TESTS AND NOT WIN32)
+    enable_testing()
+
+    FetchContent_Declare(Catch2
+        GIT_REPOSITORY https://github.com/catchorg/Catch2.git
+        GIT_TAG v3.13.0
+    )
+    FetchContent_MakeAvailable(Catch2)
+
+    set(TEST_SOURCES
+        test/bits.cpp
+    )
+
+    add_executable(tests ${TEST_SOURCES} ${SOURCES})
+    target_include_directories(tests PRIVATE include)
+    target_link_libraries(tests Catch2::Catch2WithMain raylib)
+
+    include(Catch)
+    catch_discover_tests(tests)
+endif()
+
 # LTO
-if(NOT WIN32)
-    include(CheckIPOSupported)
-    check_ipo_supported(RESULT supported OUTPUT error)
-    if(supported)
-        message(STATUS "IPO / LTO enabled")
-        set_property(TARGET masssprings PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
-        if(USE_TRACY)
-            set_property(TARGET masssprings_tracy PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
-        endif()
-    else()
-        message(STATUS "IPO / LTO not supported: <${error}>")
-    endif()
-endif()
+#if(NOT WIN32)
+include(CheckIPOSupported)
+check_ipo_supported(RESULT supported OUTPUT error)
+if(supported)
+    message(STATUS "IPO / LTO enabled")
+    set_property(TARGET masssprings PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
+else()
+    message(STATUS "IPO / LTO not supported")
+endif()
+#endif()