Revert AlignmentAllocator changes

Author: ruberith

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>> 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;
+			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;
 #else
 			std::vector<Vector3r, Eigen::aligned_allocator<Vector3r>> m_f;
 			std::vector<Vector3r, Eigen::aligned_allocator<Vector3r>> m_sol;

SPlisHSPlasH/Utilities/AVX_math.h

@@ -1471,11 +1471,7 @@ class Quaternion8f
 // ----------------------------------------------------------------------------------------------
 //alligned allocator so that vectorized types can be used in std containers
 //from: https://stackoverflow.com/questions/8456236/how-is-a-vectors-data-aligned
-#ifndef __APPLE__
 template <typename T, std::size_t N = 32>
-#else
-template <typename T, std::size_t N = 16>
-#endif
 class AlignmentAllocator {
 public:
 	typedef T value_type;

SPlisHSPlasH/Utilities/CholeskyAVXSolver.cpp

@@ -22,7 +22,7 @@ void CholeskyAVXSolver::solve(float* solution, const float* rhs, const int strid
 	const CholeskySparseMatrixfAVX& LT = this->LT;
 
 	// AVX rhs
-	std::vector<Scalarf8, AlignmentAllocator<Scalarf8>> rhs_avx(this->n_rhs_lines);  // mem request for thread safe
+	std::vector<Scalarf8, AlignmentAllocator<Scalarf8, 32>> rhs_avx(this->n_rhs_lines);  // mem request for thread safe
 	rhs_avx.back() = Scalarf8(0.0f); // For potential padding
 
 	union AVXfloatUnion {

SPlisHSPlasH/Utilities/CholeskyAVXSolver.h

@@ -19,7 +19,7 @@ namespace SPH
 	public:
 		// Fields
 		//// AVX CRS Sparse matrix
-		std::vector<Scalarf8, AlignmentAllocator<Scalarf8>> vals;
+		std::vector<Scalarf8, AlignmentAllocator<Scalarf8, 32>> vals;
 		std::vector<int> cols;
 		std::vector<int> rows_offset;