fix cl_long, cl_double alignment on i386

opencl-alignment.patch

--- a/CL/cl_platform.h
+++ b/CL/cl_platform.h
@@ -223,6 +223,20 @@ typedef double                  cl_doubl
 
 #include <stdint.h>
 
+// i386 has a default alignment of 4 even for 64-bit types
+#ifdef __i386__
+#define CL_LONG_ALIGNMENT __attribute__((aligned(8)))
+#define CL_DOUBLE_ALIGNMENT __attribute__((aligned(8)))
+#endif
+
+#ifndef CL_LONG_ALIGNMENT
+#define CL_LONG_ALIGNMENT
+#endif
+
+#ifndef CL_DOUBLE_ALIGNMENT
+#define CL_DOUBLE_ALIGNMENT
+#endif
+
 /* scalar types  */
 typedef int8_t          cl_char;
 typedef uint8_t         cl_uchar;
@@ -230,12 +244,15 @@ typedef int16_t         cl_short;
 typedef uint16_t        cl_ushort;
 typedef int32_t         cl_int;
 typedef uint32_t        cl_uint;
-typedef int64_t         cl_long;
-typedef uint64_t        cl_ulong;
+typedef int64_t         cl_long CL_LONG_ALIGNMENT;
+typedef uint64_t        cl_ulong CL_LONG_ALIGNMENT;
 
 typedef uint16_t        cl_half;
 typedef float           cl_float;
-typedef double          cl_double;
+typedef double          cl_double CL_DOUBLE_ALIGNMENT;
+
+#undef CL_LONG_ALIGNMENT
+#undef CL_DOUBLE_ALIGNMENT
 
 /* Macro names and corresponding values defined by OpenCL */
 #define CL_CHAR_BIT         8