[r28071]

[r28070]

[r28069]

[r28068]

[r28067]

[r28062]

[r28061]

[r28060]

[r28059]

[r28058]

[r28057]

[r28056]

lower_dw: refactor to use a smart walk strategy and factoring out some common code to get a node_entry

[r28055]

[r28054]

[r28053]

[r28052]

[r28051]

[r28050]

[r28049]

[r28043]

cleanup ircons code; add current_ir_graph independent construction bits; new_ir_graph does not set current_ir_graph anymore

[r28042]

[r28041]

[r28040]

[r28039]

[r28038]

[r28037]

[r28036]

[r28035]

[r28034]

[r28033]

[r28032]

[r28031]

[r28030]

[r28028]

[r28023]

[r28022]

[r28021]

[r28020]

differentiate between Bad and Deleted (because of exchange) nodes, this avoid some invalid memory accesses when trying to get irg from a Bad node

[r28019]

[r28018]