[Bug tree-optimization/58005] missed optimization printf constant string

[daniel.santos at pobox dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58005

Daniel Santos <daniel.santos at pobox dot com> changed:

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                 CC|                            |daniel.santos at pobox dot com

--- Comment #5 from Daniel Santos <daniel.santos at pobox dot com> ---
(In reply to joseph@codesourcery.com from comment #3)
> Such an optimization can increase code size (well, the total size of 
> string constants in the program) if the same format string is used with 
> many different arguments, so it may not always be a good idea (at least 
> with -Os).

Yeah, I agree.  Such a subtle optimization would be bad for many people who
intentionally reuse a format string to reduce the data size and then only to
have that thwarted by the compiler.  Typically, printfs don't reside in
performance sensitive sections of code.