Remove SIMDe and add Accelerate support to AVX math

Author: ruberith

CMake/Common.cmake

@@ -18,7 +18,7 @@ endif (USE_DOUBLE_PRECISION)
 
 cmake_dependent_option(USE_AVX "Use AVX" ON "NOT USE_DOUBLE_PRECISION" OFF)
 if (USE_AVX)
-	message(STATUS "If your CPU does not support SIMD, turn off the USE_AVX flag.")
+	message(STATUS "If your CPU does not support AVX or Accelerate, turn off the USE_AVX flag.")
 	add_definitions(-DUSE_AVX)
 endif()
 
@@ -94,8 +94,8 @@ if (UNIX OR MINGW)
 	endif ()
 	set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
 	if (USE_AVX)
-		if (CMAKE_SYSTEM_PROCESSOR STREQUAL "arm64")
-			add_compile_options("-mcpu=native+fp+simd")
+		if (APPLE)
+			link_libraries("-framework Accelerate")
 		else()
 			add_compile_options("-mavx")
 			add_compile_options("-mfma")

SPlisHSPlasH/Elasticity/Elasticity_Kugelstadt2021.h

@@ -56,10 +56,10 @@ namespace SPH
 #ifdef USE_AVX
 			VectorXr m_rhs;
 			VectorXr m_sol;
-			std::vector<Scalarf8, AlignmentAllocator<Scalarf8, 32>> m_RHS;
-			std::vector<Scalarf8, AlignmentAllocator<Scalarf8, 32>> m_f_avx;
-			std::vector<Scalarf8, AlignmentAllocator<Scalarf8, 32>> m_sol_avx;
-			std::vector<Quaternion8f, AlignmentAllocator<Quaternion8f, 32>> m_quats_avx;
+			std::vector<Scalarf8, AlignmentAllocator<Scalarf8>> m_RHS;
+			std::vector<Scalarf8, AlignmentAllocator<Scalarf8>> m_f_avx;
+			std::vector<Scalarf8, AlignmentAllocator<Scalarf8>> m_sol_avx;
+			std::vector<Quaternion8f, AlignmentAllocator<Quaternion8f>> m_quats_avx;
 #else
 			std::vector<Vector3r, Eigen::aligned_allocator<Vector3r>> m_f;
 			std::vector<Vector3r, Eigen::aligned_allocator<Vector3r>> m_sol;