From 6d1859ca8f747059042fef5434f4a365d289437c Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Wed, 26 Dec 2018 17:41:13 +0100
Subject: compat/arch: simplify microarchitecture detection

---
 compat/arch.hpp | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 compat/arch.hpp

(limited to 'compat')

diff --git a/compat/arch.hpp b/compat/arch.hpp
new file mode 100644
index 00000000..d5405f47
--- /dev/null
+++ b/compat/arch.hpp
@@ -0,0 +1,53 @@
+#pragma once
+
+// fix MSVC arch check macros
+
+// this file is too simple to fall under copyright, and
+// can be copied, modified, and redistributed freely with
+// no conditions. there's no warranty. -sh 20181226
+
+#ifdef __clang__
+#   pragma clang diagnostic push
+#   pragma clang diagnostic ignored "-Wreserved-id-macro"
+#   pragma clang diagnostic ignored "-Wunused-macros"
+#endif
+
+#if defined _MSC_VER
+#   if defined _M_AMD64
+#       undef __x86_64__
+#       define __x86_64__ 1
+#   elif defined _M_IX86
+#       undef __i386__
+#       define __i386__ 1
+#   endif
+
+#   if defined __AVX__ || defined __x86_64__ || \
+       defined _M_IX86 && _M_IX86_FP >= 2
+#       undef __SSE__
+#       undef __SSE2__
+#       undef __SSE3__
+#       define __SSE__ 1
+#       define __SSE2__ 1
+#       define __SSE3__ 1 // assume SSE3 in the _M_IX86_FP >= 2 case
+#   endif
+#endif
+
+#ifdef __clang__
+#   pragma clang diagnostic pop
+#endif
+
+#if defined __SSE3__
+#   define OTR_ARCH_DENORM_DAZ
+#   include <pmmintrin.h>
+#elif defined __SSE2__
+#   define OTR_ARCH_DENORM_FTZ
+#   include <emmintrin.h>
+#endif
+
+#if defined __SSE2__
+#   define OTR_ARCH_FPU_MASK
+#   include <xmmintrin.h>
+#endif
+
+#include <cfloat>
+#include <cfenv>
-- 
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