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# Source code for RCC-Legacy.
# Copyright (C) 2026 Richard Qin
#
# This file is part of RCC.
#
# RCC is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3, or (at your option) any later
# version.
#
# RCC is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License
# along with RCC; see the file LICENSE. If not see
# <http://www.gnu.org/licenses/>.
cmake_minimum_required(VERSION 3.20)
project(rcc
VERSION 0.1.0
LANGUAGES C CXX
)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED ON)
# Export compile_commands.json for clangd / IDE support
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
# Compiler Warnings
set(RCC_WARNING_FLAGS
-Wall -Wextra -Wpedantic
-Wshadow -Wnon-virtual-dtor
-Wold-style-cast -Wcast-align -Wunused
-Woverloaded-virtual -Wconversion -Wsign-conversion
-Wnull-dereference -Wdouble-promotion
-Wformat=2 -Wimplicit-fallthrough
)
# Sanitizers (Debug builds)
option(RCC_ENABLE_SANITIZERS "Enable ASan + UBSan in Debug builds" ON)
if(RCC_ENABLE_SANITIZERS AND CMAKE_BUILD_TYPE STREQUAL "Debug")
add_compile_options(-fsanitize=address,undefined -fno-omit-frame-pointer)
add_link_options(-fsanitize=address,undefined)
endif()
# # Find Flex & Bison
find_package(FLEX REQUIRED)
find_package(BISON REQUIRED)
# Generate lexer and parser
BISON_TARGET(SysYParser
${CMAKE_SOURCE_DIR}/src/frontend/parser.y
${CMAKE_CURRENT_BINARY_DIR}/parser.tab.cc
DEFINES_FILE ${CMAKE_CURRENT_BINARY_DIR}/parser.tab.h
COMPILE_FLAGS "--warnings=none"
)
FLEX_TARGET(SysYLexer
${CMAKE_SOURCE_DIR}/src/frontend/lexer.l
${CMAKE_CURRENT_BINARY_DIR}/lexer.yy.cc
)
ADD_FLEX_BISON_DEPENDENCY(SysYLexer SysYParser)
# Source Files
set(RCC_SOURCES
# Frontend
src/frontend/ast.cc
# src/frontend/lexer.yy.cc
# src/frontend/parser.tab.cc
# IR
src/util.cc
# src/ir/ir.cc
src/ir/irgen.cc
src/ir/irgen_expr.cc
src/ir/irgen_util.cc
src/ir/print.cc
# Mid-end
src/mid/loopinfo.cc
src/mid/cfg.cc
src/mid/live.cc
src/mid/ssa.cc
src/mid/load.cc
src/mid/alias.cc
src/mid/mem.cc
src/mid/fold.cc
src/mid/copy.cc
src/mid/gvn.cc
src/mid/gcm.cc
src/mid/ifopt.cc
src/mid/divopt.cc
src/mid/mulopt.cc
src/mid/storemrg.cc
src/mid/licm.cc
src/mid/scalar_repl.cc
src/mid/unroll.cc
src/mid/tre.cc
src/mid/lsr.cc
src/mid/loop_idiom.cc
src/mid/reduction_unroll.cc
src/mid/loopswap.cc
src/mid/unswitch.cc
src/mid/sccp.cc
src/mid/reassoc.cc
src/mid/dce.cc
src/mid/dead_loop.cc
src/mid/inline.cc
src/mid/abi.cc
src/backend/simpl.cc
src/backend/spill.cc
src/backend/rega.cc
src/backend/peephole.cc
src/backend/emit.cc
src/backend/rv64/targ.cc
src/backend/rv64/abi.cc
src/backend/rv64/isel.cc
src/backend/rv64/emit.cc
)
# Core Library
add_library(rcc_core STATIC
${RCC_SOURCES}
${BISON_SysYParser_OUTPUTS}
${FLEX_SysYLexer_OUTPUTS}
)
target_include_directories(rcc_core PUBLIC
${PROJECT_SOURCE_DIR}/include
${CMAKE_CURRENT_BINARY_DIR} # For generated parser.tab.h
# ${PROJECT_SOURCE_DIR}/src/frontend # For pre-generated parser.tab.h
)
# Suppress warnings on generated code
set_source_files_properties(
${BISON_SysYParser_OUTPUTS}
${FLEX_SysYLexer_OUTPUTS}
src/frontend/lexer.yy.cc
src/frontend/parser.tab.cc
PROPERTIES COMPILE_FLAGS "-w"
)
target_compile_options(rcc_core PRIVATE ${RCC_WARNING_FLAGS})
# Main Executable
add_executable(rcc src/main.cc)
target_link_libraries(rcc PRIVATE rcc_core)
target_compile_options(rcc PRIVATE ${RCC_WARNING_FLAGS})
# clang-format
find_program(CLANG_FORMAT_EXE NAMES clang-format)
if(CLANG_FORMAT_EXE)
file(GLOB_RECURSE ALL_CXX_SOURCES
${PROJECT_SOURCE_DIR}/src/*.cc
${PROJECT_SOURCE_DIR}/include/*.h
)
add_custom_target(format
COMMAND ${CLANG_FORMAT_EXE} -i ${ALL_CXX_SOURCES}
COMMENT "Running clang-format on all source files"
VERBATIM
)
endif()
# Tests
option(RCC_BUILD_TESTS "Build tests" ON)
if(RCC_BUILD_TESTS)
enable_testing()
# add_subdirectory(tests) # TODO: uncomment when tests are ready
endif()
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