[r8005]

[r8004]

typos fixed

[r8003]

nodes there

[r8002]

[r8001]

[r7999]

[r7998]

[r7996]

[r7993]

[r7992]

[r7986]

[r7985]

[r7984]

Add floating point model to ir_graph.
Make fp optimization dependent on the fp model.

[r7983]

that should remain due to strict fp rounding rules.
Removed unused Start attibutes.
Renamed attribute names to more understandable names.

[r7982]

[r7981]

[r7975]

[r7974]

[r7973]

[r7972]

[r7971]

[r7970]

[r7968]

[r7966]

 - when welding blocks, correctly handle the blockinfo

Removed all dumping functions

[r7965]

[r7964]

[r7963]

[r7962]

[r7961]

Predecessors of Phi M must be pairwise identical or from different blocks.

[r7960]

 - when optimizing Phi(St, ST, ...) handle correctly the case that the Stores
   might be cascaded

[r7959]

[r7958]

[r7954]

[r7950]

[r7942]

[r7940]

[r7937]

 - finally using edges to handle the use-counts rights

[r7931]

[r7930]

removed old CGGG backend based restriction

[r7928]