tree a795fc243082f1ed166655d8c124d3509e5cddf1
parent 8822f48f72f5b0ed8a265d535dc146d1ebef721f
author Hal Finkel <hfinkel@anl.gov> 1378927543 +0000
committer Hal Finkel <hfinkel@anl.gov> 1378927543 +0000

Add getUnrollingPreferences to TTI

Allow targets to customize the default behavior of the generic loop unrolling
transformation. This will be used by the PowerPC backend when targeting the A2
core (which is in-order with a deep pipeline), and using more aggressive
defaults is important.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190542 91177308-0d34-0410-b5e6-96231b3b80d8