[PATCH] [NFC] Make the maximal loop depth an absolut value.

[Johannes Doerfert]

Hi grosser, sebpop, dpeixott, simbuerg, zinob,

  Before MaxLoopDepth was implicitly a relative value to the "base loop
  depth" of the SCoP, thus a SCoP at loop depth 2 containing one loop
  had a MaxLoopDepth of 1. Now the MinLoopDepth and MaxLoopDepth allow
  to reason about the absolute loop depth and in combination also about
  the relative loop depth.

http://reviews.llvm.org/D6072

Files:
  include/polly/ScopInfo.h
  lib/Analysis/ScopInfo.cpp
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