[r28060]

[r28043]

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

[r28042]

[r28041]

[r28037]

[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]

[r28017]

[r28012]

[r28001]

[r28000]

[r27990]

[r27989]

[r27988]

allow backend to specify endianess, rewrite bitfield emitter to handle little and big-endian byte order

[r27974]

[r27970]

[r27968]

[r27953]

backend is responsible for defining what lowering operations need to be performed => so the logical thing is to use a backend callback for performing lowerings

[r27938]

make if-conversion and archdep optimisations get their information directly from the backend without frontends needing special code to transfer these infos

[r27937]

[r27924]

[r27923]

[r27900]

The gain from using an extra Unreachable is rather low, plus the noreturn call must probably be keeped anyway, so revrt it again

[r27898]

Unreachable nodes mark unreachable control flow (after noreturn calls). They
"eat" the memory, saving the two keeps used before.

Works mostly yet (scheduler issues warning about not scheduled Unreachable's)

[r27894]

fix lower_mode_b relying on current_ir_graph being equal to the passed irg; make lower_mode_b invalidate outedges if something changes

[r27873]

bring back Carry and Borrow (firm_decomp apparently uses it) and add a note that the backends don't support them

[r27849]

[r27848]

[r27837]

[r27836]

[r27835]

[r27834]

[r27833]

[r27831]

[r27830]

[r27816]