On Tue, Apr 22, 2008 at 10:57:33AM +0200, Denys Vlasenko wrote:
quoted text
> You do not see reduced stack usage in "make checkstack",
> because "make checkstack" shows only stack usage caused by
> local variables (it analyses sub %esp,NN instructions which
> make room for them). Parameters also take up stack, but
> they are pushed on stack with push instruction,
> and so are invisible in "make checkstack" output.

That on i?86 actually depends on whether -maccumulate-outgoing-args
is on or off (the default is off for -Os and most pre-i686 tunings,
and on for i686 and most post-i686 tunings when not -Os).

	Jakub
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