[CodeGen] Add core machine type primitives

Introduce an independent 64-bit extended LLT representation that preserves exact floating-point semantics and supports fixed and scalable vectors. Add opaque physical and virtual registers, strongly typed monotonic stable IDs, and atomic MachineFunctionProperties transitions.

Export the primitives through RCCBackend::CodeGen, cover their boundary and failure cases, record the frozen invariants, and normalize the architecture document permissions.

1 files changed, 55 insertions, 0 deletions

diff --git a/backend/lib/CodeGen/CMakeLists.txt b/backend/lib/CodeGen/CMakeLists.txt
new file mode 100644
index 0000000..f5b5b23
--- /dev/null
+++ b/backend/lib/CodeGen/CMakeLists.txt
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+set(
+  RCCBackendCodeGenSources
+  LowLevelType.cpp
+  MachineFunctionProperties.cpp
+  Register.cpp
+)
+set(
+  RCCBackendCodeGenHeaders
+  "${RCC_BACKEND_SOURCE_DIR}/include/rcc/CodeGen/LowLevelType.h"
+  "${RCC_BACKEND_SOURCE_DIR}/include/rcc/CodeGen/MachineFunctionProperties.h"
+  "${RCC_BACKEND_SOURCE_DIR}/include/rcc/CodeGen/Register.h"
+  "${RCC_BACKEND_SOURCE_DIR}/include/rcc/CodeGen/StableID.h"
+)
+
+add_library(RCCBackendCodeGen ${RCCBackendCodeGenSources})
+add_library(RCCBackend::CodeGen ALIAS RCCBackendCodeGen)
+
+rcc_backend_configure_target(RCCBackendCodeGen)
+
+target_include_directories(
+  RCCBackendCodeGen
+  PUBLIC
+    "$<BUILD_INTERFACE:${RCC_BACKEND_SOURCE_DIR}/include>"
+    "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
+)
+target_link_libraries(RCCBackendCodeGen PUBLIC RCCBackend::Support)
+
+set_target_properties(
+  RCCBackendCodeGen
+  PROPERTIES
+    EXPORT_NAME CodeGen
+    OUTPUT_NAME RCCBackendCodeGen
+)
+
+install(
+  TARGETS RCCBackendCodeGen
+  EXPORT RCCBackendTargets
+  ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+  LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+  RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
+)
+
+rcc_backend_register_format_files(
+  "${CMAKE_CURRENT_SOURCE_DIR}/LowLevelType.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/MachineFunctionProperties.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/Register.cpp"
+  ${RCCBackendCodeGenHeaders}
+)
+rcc_backend_register_tidy_files(
+  "${CMAKE_CURRENT_SOURCE_DIR}/LowLevelType.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/MachineFunctionProperties.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/Register.cpp"
+)