First Commit

common/VectorIntrin.h

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+// SPDX-FileCopyrightText: 2002-2025 PCSX2 Dev Team
+// SPDX-License-Identifier: GPL-3.0+
+
+// Includes appropriate intrinsic header based on platform.
+
+#pragma once
+
+#if defined(_M_X86)
+
+#ifdef _MSC_VER
+#include <intrin.h>
+#endif
+
+#if defined(__AVX2__)
+#define _M_SSE 0x501
+#elif defined(__AVX__)
+#define _M_SSE 0x500
+#elif defined(__SSE4_1__)
+#define _M_SSE 0x401
+#else
+#error PCSX2 requires compiling for at least SSE 4.1
+#endif
+
+// Starting with AVX, processors have fast unaligned loads
+// Reduce code duplication by not compiling multiple versions
+#if _M_SSE >= 0x500
+#define FAST_UNALIGNED 1
+#else
+#define FAST_UNALIGNED 0
+#endif
+
+#include <xmmintrin.h>
+#include <emmintrin.h>
+#include <tmmintrin.h>
+#include <smmintrin.h>
+#include <immintrin.h>
+
+#elif defined(_M_ARM64)
+#include <arm_neon.h>
+#endif
+
+#ifdef __APPLE__
+#include <stdlib.h> // alloca
+#else
+#include <malloc.h> // alloca
+#endif