Re: [patch] Prevent -fprofile-arcs and -fbranch-probabilities rtlfrom diverging

[Nathan Sidwell <nathan at codesourcery dot com>]

Jan Hubicka wrote:

> It would not be terribly bad to have it in compiler even after
> tree-profiling branch is merged (tree-ssa itself does not obsolette RTL
> profilng yet).  I plan to keep the RTL feedback code working.  It is
> usefull for verification of profile updating code and several copmilers
> allow feedback to be read at multiple stages so the late stages of
> compilation are not affected by incorrectly guessed profile updates.
ok, if you're happy with it, then I am too.

Zdenek, thanks for explaining. It is a pity there isn't a smaller way
of doing what is needed. BTW, this idiom
+   va_start (ap, arg);
+   va_copy (aq, ap);
is not necessary, you can write
va_start (ap, arg);
...
va_end (ap);

va_start (ap, arg);
...
va_end (ap);

although that is a minor point :)

nathan

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