inserting inline assembly in c

andystanfordjason · 01-11-2007, 06:25 PM

hi, i have writen a function in c and have got the compiler to optimize it. is it possible to put the optimised assembly in to a c file that will later get compiled but with no optimization flags on? cheers

paulsm4 · 01-11-2007, 07:10 PM

Hi -

It depends on the compiler.

In general, the answer is "sure!" Both GNU C/C++ and MSVC++, for example, have syntax extensions for in-line assembly.

Here's a good example for GNU:
http://www-128.ibm.com/developerworks/library/l-ia.html

'Hope that helps .. PSM

andystanfordjason · 01-11-2007, 07:28 PM

cheers, by the way im using gcc