整理

include/boost/predef/hardware/simd/x86_amd.h

@@ -0,0 +1,89 @@
+/*
+Copyright Charly Chevalier 2015
+Copyright Joel Falcou 2015
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE_1_0.txt or copy at
+http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+#ifndef BOOST_PREDEF_HARDWARE_SIMD_X86_AMD_H
+#define BOOST_PREDEF_HARDWARE_SIMD_X86_AMD_H
+
+#include <boost/predef/version_number.h>
+#include <boost/predef/hardware/simd/x86_amd/versions.h>
+
+/* tag::reference[]
+= `BOOST_HW_SIMD_X86_AMD`
+
+The SIMD extension for x86 (AMD) (*if detected*).
+Version number depends on the most recent detected extension.
+
+[options="header"]
+|===
+| {predef_symbol} | {predef_version}
+
+| `+__SSE4A__+` | {predef_detection}
+
+| `+__FMA4__+` | {predef_detection}
+
+| `+__XOP__+` | {predef_detection}
+
+| `BOOST_HW_SIMD_X86` | {predef_detection}
+|===
+
+[options="header"]
+|===
+| {predef_symbol} | {predef_version}
+
+| `+__SSE4A__+` | BOOST_HW_SIMD_X86_SSE4A_VERSION
+
+| `+__FMA4__+` | BOOST_HW_SIMD_X86_FMA4_VERSION
+
+| `+__XOP__+` | BOOST_HW_SIMD_X86_XOP_VERSION
+
+| `BOOST_HW_SIMD_X86` | BOOST_HW_SIMD_X86
+|===
+
+NOTE: This predef includes every other x86 SIMD extensions and also has other
+more specific extensions (FMA4, XOP, SSE4a). You should use this predef
+instead of `BOOST_HW_SIMD_X86` to test if those specific extensions have
+been detected.
+
+*/ // end::reference[]
+
+#define BOOST_HW_SIMD_X86_AMD BOOST_VERSION_NUMBER_NOT_AVAILABLE
+
+// AMD CPUs also use x86 architecture. We first try to detect if any AMD
+// specific extension are detected, if yes, then try to detect more recent x86
+// common extensions.
+
+#undef BOOST_HW_SIMD_X86_AMD
+#if !defined(BOOST_HW_SIMD_X86_AMD) && defined(__XOP__)
+#   define BOOST_HW_SIMD_X86_AMD BOOST_HW_SIMD_X86_AMD_XOP_VERSION
+#endif
+#if !defined(BOOST_HW_SIMD_X86_AMD) && defined(__FMA4__)
+#   define BOOST_HW_SIMD_X86_AMD BOOST_HW_SIMD_X86_AMD_FMA4_VERSION
+#endif
+#if !defined(BOOST_HW_SIMD_X86_AMD) && defined(__SSE4A__)
+#   define BOOST_HW_SIMD_X86_AMD BOOST_HW_SIMD_X86_AMD_SSE4A_VERSION
+#endif
+
+#if !defined(BOOST_HW_SIMD_X86_AMD)
+#   define BOOST_HW_SIMD_X86_AMD BOOST_VERSION_NUMBER_NOT_AVAILABLE
+#else
+    // At this point, we know that we have an AMD CPU, we do need to check for
+    // other x86 extensions to determine the final version number.
+#   include <boost/predef/hardware/simd/x86.h>
+#   if BOOST_HW_SIMD_X86 > BOOST_HW_SIMD_X86_AMD
+#      undef BOOST_HW_SIMD_X86_AMD
+#      define BOOST_HW_SIMD_X86_AMD BOOST_HW_SIMD_X86
+#   endif
+#   define BOOST_HW_SIMD_X86_AMD_AVAILABLE
+#endif
+
+#define BOOST_HW_SIMD_X86_AMD_NAME "x86 (AMD) SIMD"
+
+#endif
+
+#include <boost/predef/detail/test.h>
+BOOST_PREDEF_DECLARE_TEST(BOOST_HW_SIMD_X86_AMD, BOOST_HW_SIMD_X86_AMD_NAME)