On Tuesday 13 June 2006 12:14, Catalin Marinas wrote: > On Tue, 2006-06-13 at 10:41 +0100, Phil Blundell wrote: > > On Mon, 2006-06-12 at 23:54 +0200, Martin Guy wrote: > > > Is there any reason not to make ldm the default for armv4 and above, > > > since it seems to win most, among the various options? > > > > Two reasons: because it requires the return address to be on the stack > > (which often requires adding another instruction to get it there) > > But isn't LR saved anyway in functions that call other functions?
Yes. > Though I'm not sure what the average percentage of the leaf functions out of > the total number of functions is. I'd guess for most callgraphs there are a significant number of leaf functions that do not normally push lr. Paul -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
