4.15. Platform-specific Flags

Some flags only make sense for particular target platforms.


(x86 only, added in GHC 7.0.1) Use the SSE2 registers and instruction set to implement floating point operations when using the native code generator. This gives a substantial performance improvement for floating point, but the resulting compiled code will only run on processors that support SSE2 (Intel Pentium 4 and later, or AMD Athlon 64 and later).

SSE2 is unconditionally used on x86-64 platforms.