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https://github.com/visualboyadvance-m/visualboyadvance-m/commit/af0de1c4b308ef8d9a081ecf407805b75a99d877.patch
https://bugs.gentoo.org/799362
From: Rafael Kitover <rkitover@gmail.com>
Date: Fri, 4 Oct 2019 07:35:49 +0000
Subject: [PATCH] xbrz: fix inline asm check
Use correct cpp code to detect x86/amd64 architecture to use inline asm.
Signed-off-by: Rafael Kitover <rkitover@gmail.com>
--- a/src/filters/xBRZ/xbrz.cpp
+++ b/src/filters/xBRZ/xbrz.cpp
@@ -66,17 +66,17 @@ uint32_t gradientARGB(uint32_t pixFront, uint32_t pixBack) //find intermediate c
inline double fastSqrt(double n)
{
-#ifdef __GNUC__ || __clang__ || __MINGW64_VERSION_MAJOR || __MINGW32_MAJOR_VERSION
+#if (defined(__GNUC__) || defined(__clang__)) && (defined(__x86_64__) || defined(__i386__))
__asm__ ("fsqrt" : "+t" (n));
return n;
-#elif _MSC_VER && _M_IX86
+#elif defined(_MSC_VER) && defined(_M_IX86)
// speeds up xBRZ by about 9% compared to std::sqrt which internally uses
// the same assembler instructions but adds some "fluff"
__asm {
fld n
fsqrt
}
-#else // _MSC_VER && _M_X64 OR other platforms
+#else // defined(_MSC_VER) && defined(_M_X64) OR other platforms
// VisualStudio x86_64 does not allow inline ASM
return std::sqrt(n);
#endif
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