[r27488]

[r27486]

[r27483]

[r27481]

[r27479]

[r27478]

[r27477]

[r27476]

[r27474]

fix another 2 instances where doubleword lowering didn't check if previous nodes were already lowered

[r27471]

[r27470]

[r27468]

[r27467]

[r27466]

[r27464]

use barriers instead of be_Keep to keep unused nodes since we can't guarantee the rule that a keep is always right behind the definition of a value

[r27462]

[r27461]

[r27460]

[r27459]

[r27458]

[r27456]

[r27454]

- fixed register spilling & register specs

[r27450]

[r27447]

[r27442]

[r27441]

[r27440]

[r27436]

[r27419]

[r27418]

  have to construct explicit Keep nodes when killing barriers.
  This should fix the no-omit-frame-pointer missing IncSP problems.

[r27415]

[r27412]

[r27411]

combo, just combo's evaluators must be synced between compute_Cmp() and
compute_Proj_Cmp().

[r27410]

[r27408]

[r27407]

[r27402]

[r27401]

[r27395]

[r27394]