On 6/19/07, Jeremy Fitzhardinge <[EMAIL PROTECTED]> wrote:
Denis Cheng wrote: > From: Denis Cheng <[EMAIL PROTECTED]> > > the explicit memset call could be optimized out by data initialization, > thus all the fill working can be done by the compiler implicitly. >How does the generated code change? Does gcc do something stupid like statically allocate a prototype structure full of zeros, and then memcpy it in? Or does it generate a series of explicit assignments for each member? Or does it generate a memset anyway? Seems to me that this gives gcc the opportunity to be more stupid, and the only right answer is what we're doing anyway. J
Technically speaking, C standard guarantees the data be initialized correctly; just from the point view of code style, let the compiler selects how to initialize will be better, this could let the compiler has more optimization points. -- Denis Cheng Linux Application Developer - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
