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[Tobias Pankrath]

> Inline assembly has been relatively useless in GCC for years. 
> Inline asm
> interferes with the optimisers ability to do a good job, which 
> basically
> makes use of inline assembly self-defeating.
> The only time I ever need to use inline-asm is to interface an 
> arch feature
> that has no API. As long as there are intrinsics for all the 
> opcodes one
> might want, then it's better to use them.

> That said, as stated above, if use of this stuff is for 
> performance, then
> using an inline-asm block will ruin the surrounding code anyway,

Could someone explain to me, why inline asm screws up the 
optimizer? My naive view on the matter is, that the optimizer has 
full knowledge of what is going on regardless of whether 
intrinsics or asm is used. I could also think of an optimizer 
that optimizes inline asm, too. For example by reassigning 
registers etc.