Live range splitting in new allocator

[Richard Kenner]

    I have certainly heard the exact rational that I gave, namely the ability
    of the end user to debug the installed binaries, as the reason given for
    autoconf's default usage of "-g -O" and the makefile standard to avoid
    stripping binaries when installing them.  

That's the reason for the default of -g, but has nothing to do with the desire
of -g not to change the generated code *at all*.