From 93a86e2840d1254340dadcd561a872eba61340f7 Mon Sep 17 00:00:00 2001
From: hendricks266 <hendricks266@1a8010ca-5511-0410-912e-c29ae57300e0>
Date: Wed, 4 May 2016 00:25:27 +0000
Subject: [PATCH] Enable LIBDIVIDE_USE_SSE2 under x86_64 builds or if the
 binary is built with SSE2 optimizations.

git-svn-id: https://svn.eduke32.com/eduke32@5716 1a8010ca-5511-0410-912e-c29ae57300e0
---
 polymer/eduke32/build/include/libdivide.h | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/polymer/eduke32/build/include/libdivide.h b/polymer/eduke32/build/include/libdivide.h
index 3b94cbf4e..266867624 100644
--- a/polymer/eduke32/build/include/libdivide.h
+++ b/polymer/eduke32/build/include/libdivide.h
@@ -31,10 +31,8 @@
 #define __has_builtin(x) 0  // Compatibility with non-clang compilers.
 #endif
 
-#ifdef __ICC
-#define HAS_INT128_T 0
-#else
-#define HAS_INT128_T __LP64__
+#if defined(__SIZEOF_INT128__)
+#define HAS_INT128_T 1
 #endif
 
 #if defined(__x86_64__) || defined(_WIN64) || defined(_M_64)
@@ -49,6 +47,10 @@
 #define LIBDIVIDE_GCC_STYLE_ASM 1
 #endif
 
+#if LIBDIVIDE_IS_X86_64 || defined __SSE2__ || (defined _M_IX86_FP && _M_IX86_FP == 2)
+#define LIBDIVIDE_USE_SSE2 1
+#endif
+
 /* Explanation of "more" field: bit 6 is whether to use shift path.  If we are using the shift path, bit 7 is whether the divisor is negative in the signed case; in the unsigned case it is 0.   Bits 0-4 is shift value (for shift path or mult path).  In 32 bit case, bit 5 is always 0.  We use bit 7 as the "negative divisor indicator" so that we can use sign extension to efficiently go to a full-width -1.