From dcd1252368b1e6fe1b29c8e6f0ac72d11b285918 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Fri, 25 Nov 2022 02:18:16 +0100
Subject: [PATCH] cmake: test for lsx and lasx intrinsics for loongarch
---
CMakeLists.txt | 36 ++++++++++++++++++++++++++++++++
cmake/CheckCPUArchitecture.cmake | 2 ++
2 files changed, 38 insertions(+)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 294f82614067..8ada68e8b90e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -139,6 +139,7 @@ check_cpu_architecture(x86 SDL_CPU_X86)
check_cpu_architecture(x64 SDL_CPU_X64)
check_cpu_architecture(arm32 SDL_CPU_ARM32)
check_cpu_architecture(arm64 SDL_CPU_ARM64)
+check_cpu_architecture(loongarch64 SDL_CPU_LOONGARCH64)
# Check for 64 or 32 bit
set(SIZEOF_VOIDP ${CMAKE_SIZEOF_VOID_P})
@@ -440,6 +441,8 @@ dep_option(SDL_3DNOW "Use 3Dnow! MMX assembly routines" ON "SDL_AS
dep_option(SDL_ALTIVEC "Use Altivec assembly routines" ON "SDL_ASSEMBLY" OFF)
dep_option(SDL_ARMSIMD "Use SIMD assembly blitters on ARM" OFF "SDL_ASSEMBLY;SDL_CPU_ARM32" OFF)
dep_option(SDL_ARMNEON "Use NEON assembly blitters on ARM" OFF "SDL_ASSEMBLY;SDL_CPU_ARM32" OFF)
+dep_option(SDL_LSX "Use LSX assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_LOONGARCH64" OFF)
+dep_option(SDL_LASX "Use LASX assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_LOONGARCH64" OFF)
set_option(SDL_LIBC "Use the system C library" ${OPT_DEF_LIBC})
set_option(SDL_GCC_ATOMICS "Use gcc builtin atomics" ${OPT_DEF_GCC_ATOMICS})
@@ -905,6 +908,39 @@ if(SDL_ASSEMBLY)
endif()
endif()
+ if(SDL_LSX)
+ cmake_push_check_state()
+ list(APPEND CMAKE_REQUIRED_FLAGS "-mlsx")
+ check_c_source_compiles([[
+ #ifndef __loongarch_sx
+ #error Assembler CPP flag not enabled
+ #endif
+ ]] CPU_HAS_LSX)
+ check_include_file("lsxintrin.h" HAVE_LSXINTRIN_H)
+ cmake_pop_check_state()
+
+ if(CPU_HAS_LSX AND HAVE_LSXINTRIN_H)
+ list(APPEND EXTRA_CFLAGS "-mlsx")
+ set(HAS_LSX TRUE)
+ endif()
+ endif()
+
+ if(SDL_LASX)
+ cmake_push_check_state()
+ list(APPEND CMAKE_REQUIRED_FLAGS "-mlasx")
+ check_c_source_compiles([[
+ #ifndef __loongarch_asx
+ #error Assembler CPP flag not enabled
+ #endif
+ ]] CPU_HAS_LASX)
+ check_include_file("lasxintrin.h" HAVE_LASXINTRIN_H)
+ cmake_pop_check_state()
+ if(CPU_HAS_LASX AND HAVE_LASXINTRIN_H)
+ list(APPEND EXTRA_CFLAGS "-mlasx")
+ set(HAS_LASX TRUE)
+ endif()
+ endif()
+
if(SDL_ARMSIMD)
set(ORIG_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -x assembler-with-cpp")
diff --git a/cmake/CheckCPUArchitecture.cmake b/cmake/CheckCPUArchitecture.cmake
index 79639f1c2bc4..7e3e4594700b 100644
--- a/cmake/CheckCPUArchitecture.cmake
+++ b/cmake/CheckCPUArchitecture.cmake
@@ -32,6 +32,8 @@ function(check_cpu_architecture ARCH VARIABLE)
_internal_check_cpu_architecture("defined(__arm__) || defined(_M_ARM)" arm32 ${VARIABLE})
elseif(ARCH STREQUAL "arm64")
_internal_check_cpu_architecture("defined(__aarch64__) || defined(_M_ARM64)" arm64 ${VARIABLE})
+ elseif(ARCH STREQUAL "loongarch64")
+ _internal_check_cpu_architecture("defined(__loongarch64)" loongarch64 ${VARIABLE})
else()
message(WARNING "Unknown CPU architectures (${ARCH}).")
set(${VARIABLE} FALSE)