Marc Glisse questions

Marc Glisse answers

• Why is gcc not compiling this code consistently?
• Overflow handling in GMP pow
• Using clang's feature checking macros to detect existence of std::launder
• GCC 4.9's unordered_set and std::move
• implict SIMD (SSE/AVX) broadcasts with GCC
• Compiling C++ code using __float128
• gcc's __builtin_memcpy performance with certain number of bytes is terrible compared to clang's
• GCC with -fno-builtin does not seem to work
• std::vector and std::string reallocation strategy
• Using gcc attributes with C++11 attributes syntax