amd64: Update TODO
amd64: Transform Alloc nodes
inline: Remove strange special case for CopyB when copying entity parameters.

All CopyBs and Stores have call_mem as operand, so having an explicit call_mem operand is unnecessary.
ia32: Cleanup.
ia32: Use Or when selecting code for x ? -1 : c.

In comparsion with And + Add this saves one instruction, because we can keep the -1 and need no And.
doc: Replace remaining Psis by Mux.
ia32: Make condition more readable.
ifconv: Attach the Phi's debug info to the Mux, not the condition's.

The location of the value is more sensible than the location of the condition.
iropt: Use more accurate debug info in can_negate_cheaply().
be: Cleanup.

This also condenses double spaces at the end of verbose asm comments, which have no debug location.
lower: Use correct stat enum entry.
stat: Remove unused ia32 stat entries.
ia32: Remove remaining three optimisation statistics.

Most others were unused and removed already.
These three were used, but lost their meaning long ago when the users of the others were removed.
stat: Remove the unused if-conversion statistics.

They are remnants from the first if-conversion implementation.