forgot this.

Former-commit-id: bc838556a2238bee1a083ad95218e7620c6a7119

src/vector.h

+/*******************************************************************************
+ * This file is part of SWIFT.
+ * Coypright (c) 2012 Pedro Gonnet (pedro.gonnet@durham.ac.uk)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ ******************************************************************************/
+
+/* Have I already read this file? */
+#ifndef VEC_MACRO
+
+    /* Include the header file with the intrinsics. */
+    #include <immintrin.h>
+    
+    /* Define the vector macro. */
+    #define VEC_MACRO(elcount, type)  __attribute__((vector_size((elcount)*sizeof(type)))) type
+
+    /* So what will the vector size be? */
+    #ifdef __AVX__
+        #define VEC_SIZE 8
+        #define vec_load(a) _mm256_load_ps(a)
+        #define vec_set1(a) _mm256_set1_ps(a)
+        #define vec_sqrt(a) _mm256_sqrt_ps(a)
+        #define vec_rcp(a) _mm256_rcp_ps(a)
+        #define vec_rsqrt(a) _mm256_rsqrt_ps(a)
+        #define vec_ftoi(a) _mm256_cvttps_epi32(a)
+        #define vec_fmin(a,b) _mm256_min_ps(a,b)
+    #else
+        #define VEC_SIZE 4
+        #define vec_load(a) _mm_load_ps(a)
+        #define vec_set1(a) _mm_set1_ps(a)
+        #define vec_sqrt(a) _mm_sqrt_ps(a)
+        #define vec_rcp(a) _mm_rcp_ps(a)
+        #define vec_rsqrt(a) _mm_rsqrt_ps(a)
+        #define vec_ftoi(a) _mm_cvttps_epi32(a)
+        #define vec_fmin(a,b) _mm_min_ps(a,b)
+    #endif
+    // #ifdef __AVX__
+    //     #define VEC_SIZE 8
+    //     #define VEC_FLOAT VEC_MACRO(8,float)
+    //     #define VEC_DOUBLE VEC_MACRO(4,double)
+    //     #define VECTORIZE
+    // #elif defined(__SSE2__)
+    //     #define VEC_SIZE 4
+    //     #define VEC_FLOAT VEC_MACRO(4,float)
+    //     #define VEC_DOUBLE VEC_MACRO(2,double)
+    //     #define VECTORIZE
+    // #endif
+
+    /* Define the composite types for element access. */
+    #ifdef VECTORIZE
+    typedef union {
+        VEC_MACRO(VEC_SIZE,float) v;
+        VEC_MACRO(VEC_SIZE,int) m;
+        float f[VEC_SIZE];
+        int i[VEC_SIZE];
+        } vector;
+    #endif
+
+#endif