2011/06/08 · I have a C++ program that is doing a lot of math (mostly calls to sin(), sqrt() and so regular operations). I know that in theory enabling -msse ...
These options enable GCC to use these extended instructions in generated code, even without -mfpmath=sse . Applications that perform run-time CPU detection must ...
To have SSE/SSE2 instructions generated automatically from floating-point code (as opposed to 387 instructions), see -mfpmath=sse . GCC depresses SSEx ...
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2018/11/14 · ... mfpmath=sse' c++: error: unrecognized command line option '-msse' c++: error: unrecognized command line option '-msse2' c++: error ...
Maybe we can say "This is the default choice for non-Darwin x86-32 targets." here? And further extend: "This is the default choice for the x86-64 compiler, ...
A better fix would be to use "-mfpmath=sse" to disable x87 math - this also makes your program slightly faster, whereas -ffloat-store can make it much slower.
... mfpmath=sse -fomit-frame-pointer -ffast-math\ -D___SINGLE_HOST -o $b-$d-gambit $b-$d-gambit.c $b-$d-gambit_.c\ -L ~/schemes/install/4.0b22/lib/ -lgambc -lm ...
2016/04/18 · When a value is loaded to a 387 register it is rounded to 'long double' converted from a 'double' value. Operations rounds the results again...
2015/01/19 · Switch to SSE 2 for floating-point calculations, using -msse2 -mfpmath=sse . ... SSE 2 was introduced in 2000, almost 15 years ago, and all ...