Many developers are still using __attribute__((optimize())) in production code, although it quite broken.
* doc/extend.texi (Common Function Attributes) [optimize]: Discourage use of the optimize attribute. diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index 883d9b334ab5..a1359f5579ce 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -3021,10 +3021,8 @@ that affect more than one function. @xref{Function Specific Option Pragmas}, for details about the @samp{#pragma GCC optimize} pragma. -This can be used for instance to have frequently-executed functions -compiled with more aggressive optimization options that produce faster -and larger code, while other functions can be compiled with less -aggressive options. +This attribute should only be used for debugging purposes. It is not +suitable for production code. @item pure @cindex @code{pure} function attribute -- Markus