feat(usage_analyser,multifile_compiler,compiler): dead code elimination

Author: JaDogg

compiler/CMakeLists.txt

@@ -28,7 +28,7 @@ include_directories(${UTF8_DIR})
 # add_link_options(-g -fsanitize=undefined -fsanitize=integer -fsanitize=nullability)
 
 set(YAKSHA_SOURCE_FILES
-        src/ast/ast.h src/ast/ast_printer.h src/ast/ast_vis.h src/ast/codefiles.h src/ast/environment.h src/ast/environment_stack.h src/ast/parser.h src/builtins/builtin.h src/builtins/builtins.h src/compiler/compiler.h src/compiler/compiler_utils.h src/compiler/datatype_compiler.h src/compiler/datatype_parser.h src/compiler/def_class_visitor.h src/compiler/delete_stack.h src/compiler/delete_stack_stack.h src/compiler/desugaring_compiler.h src/compiler/entry_struct_func_compiler.h src/compiler/function_datatype_extractor.h src/compiler/multifile_compiler.h src/compiler/slot_matcher.h src/compiler/statement_writer.h src/compiler/type_checker.h src/file_formats/ic_tokens_file.h src/file_formats/tokens_file.h src/ic2c/ic2c.h src/ic2c/ic_ast.h src/ic2c/ic_compiler.h src/ic2c/ic_level2_parser.h src/ic2c/ic_level2_tokenizer.h src/ic2c/ic_line_splicer.h src/ic2c/ic_optimizer.h src/ic2c/ic_parser.h src/ic2c/ic_peek_ahead_iter.h src/ic2c/ic_preprocessor.h src/ic2c/ic_simple_character_iter.h src/ic2c/ic_token.h src/ic2c/ic_tokenizer.h src/ic2c/ic_trigraph_translater.h src/tokenizer/block_analyzer.h src/tokenizer/string_utils.h src/tokenizer/token.h src/tokenizer/tokenizer.h src/utilities/annotation.h src/utilities/annotations.h src/utilities/colours.h src/utilities/cpp_util.h src/utilities/defer_stack.h src/utilities/defer_stack_stack.h src/utilities/error_printer.h src/utilities/gc_pool.h src/utilities/human_id.h src/utilities/ykdatatype.h src/utilities/ykdt_pool.h src/utilities/ykobject.h src/yaksha_lisp/macro_processor.h src/yaksha_lisp/prelude.h src/yaksha_lisp/yaksha_lisp.h src/yaksha_lisp/yaksha_lisp_builtins.h src/ast/ast.cpp src/ast/ast_printer.cpp src/ast/ast_vis.cpp src/ast/codefiles.cpp src/ast/environment.cpp src/ast/environment_stack.cpp src/ast/parser.cpp src/builtins/builtins.cpp src/compiler/compiler.cpp src/compiler/compiler_utils.cpp src/compiler/def_class_visitor.cpp src/compiler/delete_stack.cpp src/compiler/delete_stack_stack.cpp src/compiler/desugaring_compiler.cpp src/compiler/entry_struct_func_compiler.cpp src/compiler/multifile_compiler.cpp src/compiler/type_checker.cpp src/file_formats/ic_tokens_file.cpp src/file_formats/tokens_file.cpp src/ic2c/ic2c.cpp src/ic2c/ic_ast.cpp src/ic2c/ic_compiler.cpp src/ic2c/ic_level2_parser.cpp src/ic2c/ic_level2_tokenizer.cpp src/ic2c/ic_line_splicer.cpp src/ic2c/ic_optimizer.cpp src/ic2c/ic_parser.cpp src/ic2c/ic_peek_ahead_iter.cpp src/ic2c/ic_preprocessor.cpp src/ic2c/ic_tokenizer.cpp src/ic2c/ic_trigraph_translater.cpp src/tokenizer/block_analyzer.cpp src/tokenizer/string_utils.cpp src/tokenizer/tokenizer.cpp src/utilities/annotation.cpp src/utilities/annotations.cpp src/utilities/colours.cpp src/utilities/cpp_util.cpp src/utilities/defer_stack.cpp src/utilities/defer_stack_stack.cpp src/utilities/error_printer.cpp src/utilities/human_id.cpp src/utilities/ykdatatype.cpp src/utilities/ykdt_pool.cpp src/utilities/ykobject.cpp src/yaksha_lisp/yaksha_lisp.cpp src/yaksha_lisp/yaksha_lisp_builtins.cpp) # update_makefile.py SRC
+        src/ast/ast.h src/ast/ast_printer.h src/ast/ast_vis.h src/ast/codefiles.h src/ast/environment.h src/ast/environment_stack.h src/ast/parser.h src/builtins/builtin.h src/builtins/builtins.h src/compiler/compiler.h src/compiler/compiler_utils.h src/compiler/datatype_compiler.h src/compiler/datatype_parser.h src/compiler/def_class_visitor.h src/compiler/delete_stack.h src/compiler/delete_stack_stack.h src/compiler/desugaring_compiler.h src/compiler/entry_struct_func_compiler.h src/compiler/function_datatype_extractor.h src/compiler/multifile_compiler.h src/compiler/slot_matcher.h src/compiler/statement_writer.h src/compiler/type_checker.h src/compiler/usage_analyser.h src/file_formats/ic_tokens_file.h src/file_formats/tokens_file.h src/ic2c/ic2c.h src/ic2c/ic_ast.h src/ic2c/ic_compiler.h src/ic2c/ic_level2_parser.h src/ic2c/ic_level2_tokenizer.h src/ic2c/ic_line_splicer.h src/ic2c/ic_optimizer.h src/ic2c/ic_parser.h src/ic2c/ic_peek_ahead_iter.h src/ic2c/ic_preprocessor.h src/ic2c/ic_simple_character_iter.h src/ic2c/ic_token.h src/ic2c/ic_tokenizer.h src/ic2c/ic_trigraph_translater.h src/tokenizer/block_analyzer.h src/tokenizer/string_utils.h src/tokenizer/token.h src/tokenizer/tokenizer.h src/utilities/annotation.h src/utilities/annotations.h src/utilities/colours.h src/utilities/cpp_util.h src/utilities/defer_stack.h src/utilities/defer_stack_stack.h src/utilities/error_printer.h src/utilities/gc_pool.h src/utilities/human_id.h src/utilities/ykdatatype.h src/utilities/ykdt_pool.h src/utilities/ykobject.h src/yaksha_lisp/macro_processor.h src/yaksha_lisp/prelude.h src/yaksha_lisp/yaksha_lisp.h src/yaksha_lisp/yaksha_lisp_builtins.h src/ast/ast.cpp src/ast/ast_printer.cpp src/ast/ast_vis.cpp src/ast/codefiles.cpp src/ast/environment.cpp src/ast/environment_stack.cpp src/ast/parser.cpp src/builtins/builtins.cpp src/compiler/compiler.cpp src/compiler/compiler_utils.cpp src/compiler/def_class_visitor.cpp src/compiler/delete_stack.cpp src/compiler/delete_stack_stack.cpp src/compiler/desugaring_compiler.cpp src/compiler/entry_struct_func_compiler.cpp src/compiler/multifile_compiler.cpp src/compiler/type_checker.cpp src/compiler/usage_analyser.cpp src/file_formats/ic_tokens_file.cpp src/file_formats/tokens_file.cpp src/ic2c/ic2c.cpp src/ic2c/ic_ast.cpp src/ic2c/ic_compiler.cpp src/ic2c/ic_level2_parser.cpp src/ic2c/ic_level2_tokenizer.cpp src/ic2c/ic_line_splicer.cpp src/ic2c/ic_optimizer.cpp src/ic2c/ic_parser.cpp src/ic2c/ic_peek_ahead_iter.cpp src/ic2c/ic_preprocessor.cpp src/ic2c/ic_tokenizer.cpp src/ic2c/ic_trigraph_translater.cpp src/tokenizer/block_analyzer.cpp src/tokenizer/string_utils.cpp src/tokenizer/tokenizer.cpp src/utilities/annotation.cpp src/utilities/annotations.cpp src/utilities/colours.cpp src/utilities/cpp_util.cpp src/utilities/defer_stack.cpp src/utilities/defer_stack_stack.cpp src/utilities/error_printer.cpp src/utilities/human_id.cpp src/utilities/ykdatatype.cpp src/utilities/ykdt_pool.cpp src/utilities/ykobject.cpp src/yaksha_lisp/yaksha_lisp.cpp src/yaksha_lisp/yaksha_lisp_builtins.cpp) # update_makefile.py SRC
 
 set(YAKSHA_TEST_FILES
         tests/btest.h tests/test_block_analyzer.cpp tests/test_compiler.cpp tests/test_gc_pool.cpp tests/test_ic_tokenizer.cpp tests/test_parser.cpp tests/test_string_utils.cpp tests/test_tokenizer.cpp tests/test_type_checker.cpp tests/test_yaksha_lisp.cpp) # update_makefile.py TESTS