ignore Proj nodes in place_floats_early()

[r15116]

Proj's are now automatically in the block of it's predecessor
get_nodes_block() is free of special cases ...

[r15115]

[r15114]

[r15113]

renamed reserved word this

[r15112]

[r15110]

[r15103]

[r15100]

[r15099]

[r15097]

[r15096]

Make the deconv optimisation more aggressive (allow more ops, handle convs with multiple users) and (hopefully) more correct (check if a conv is a downconv at more places).

[r15093]

[r15087]

[r15086]

[r15082]

[r15081]

[r15080]

[r15073]

Adjusted nodesets to it but it is still deactivated.
See macro at the top of irnodeset.h

[r15065]

[r15064]

Removed some old pset_live stuff.

[r15063]

Yeah, it's really long ago since this was touched

[r15062]

I kept the old for benchmarking. As soon as they are done, it will go away.

[r15061]

and some cosmetic changes

[r15060]

[r15059]

[r15057]

[r15055]

[r15053]

[r15050]

[r15045]

[r15044]

[r15043]

[r15042]

[r15041]

[r15040]

[r15039]

[r15038]

[r15037]

[r15036]

indentation changed

[r15035]