Sanjoy Das e178f46965 [LoopUnrollRuntime] Avoid high-cost trip count computation.
Summary:
Runtime unrolling of loops needs to emit an expression to compute the
loop's runtime trip-count.  Avoid runtime unrolling if this computation
will be expensive.

Depends on D8993.

Reviewers: atrick

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D8994

llvm-svn: 234846
2015-04-14 03:20:38 +00:00
..
2015-03-26 05:03:10 +00:00
2015-02-26 04:53:00 +00:00