On Tue, 2006-07-25 at 14:29 +0100, Joel Reymont wrote:
On Jul 25, 2006, at 2:09 PM, Duncan Coutts wrote:
You can also cut compile times by compiling fewer non-core libraries and by using -fasm rather than -fvia-C.
I heard recently that GHC does not generate code that gcc likes and so there's a push to improve asm generation. What stage is that push at?
Do I cripple my GHC build in any way by using asm as opposed to via-c?
Depending on what processor type you're using, the resulting code will be slightly slower or slightly faster than -fvia-C. If I recall correctly, -fasm is slightly slower on x86 and slightly faster on x86-64. Not sure about ppc. There's no other major differences. (Though note that it's recommended that you use -fvia-C with the FFI as that allows double checking of FFI imports against C header files.) Duncan