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Merge pull request #41 from orbea/gcc7

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Workaround for gcc7 compiler bug
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Twinaphex 2017-05-15 20:49:09 +02:00 committed by GitHub
commit 95350550af
1 changed files with 19 additions and 0 deletions
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19
nall/bit.hpp
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@ -1,6 +1,12 @@
#ifndef NALL_BIT_HPP
#define NALL_BIT_HPP
// workaround for an infinite loop compiler bug in gcc7
// https://github.com/libretro/bsnes-mercury/issues/47
#if defined(PROFILE_ACCURACY)
#define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
#endif
#include <nall/stdint.hpp>
namespace nall {
@ -10,11 +16,24 @@ template<unsigned bits> inline uintmax_t uclamp(const uintmax_t x) {
return y + ((x - y) & -(x < y)); //min(x, y);
}
#if defined(PROFILE_ACCURACY)
#if GCC_VERSION > 70000
#pragma GCC push_options
#pragma GCC optimize ("no-strict-aliasing")
#endif
#endif
template<unsigned bits> inline uintmax_t uclip(const uintmax_t x) {
enum : uintmax_t { b = 1ull << (bits - 1), m = b * 2 - 1 };
return (x & m);
}
#if defined(PROFILE_ACCURACY)
#if GCC_VERSION > 70000
#pragma GCC pop_options
#endif
#endif
template<unsigned bits> inline intmax_t sclamp(const intmax_t x) {
enum : intmax_t { b = 1ull << (bits - 1), m = b - 1 };
return (x > m) ? m : (x < -b) ? -b : x;