Remove bogus debug statement.  Sheesh.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189638 91177308-0d34-0410-b5e6-96231b3b80d8
[PowerPC] Handle selection of compare instructions in fast-isel.

Mostly trivial patch adding support for compares.  The meat of the
work was added with the branch support.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189639 91177308-0d34-0410-b5e6-96231b3b80d8
mi-sched: Precompute a PressureDiff for each instruction, adjust for liveness later.

Created SUPressureDiffs array to hold the per node PDiff computed during DAG building.

Added a getUpwardPressureDelta API that will soon replace the old
one. Compute PressureDelta here from the precomputed PressureDiffs.

Updating for liveness will come next.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189640 91177308-0d34-0410-b5e6-96231b3b80d8