compiler memory use optimization

[Dan Kegel]

Joe Buck wrote:

> Giovanni Bajo wrote:
>> The good news is that 3.4 is much better [than 3.3] on many testcases.
>> (Un)luckily, it is also much more ISO/ANSI C++ standard compliant, so
>> upgrading from 3.3 to 3.4 for a large C++ applications could be non-trivial.
> 
> This is mainly the case for those who have never used compilers other than
> g++, and who learn the language by throwing code at the compiler and
> seeing what works.

The scars on my back say large C++ applications by even very
good programmers can be a lot of work to port from gcc-3.3 to gcc-3.4.
Or from gcc-2.95.3 to gcc-3.3.  Or from 32 bit to 64 bit.  Or from
gcc-3.4 to icc-8.1.  Any big change brings its own set of problems...
- Dan

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