3 Commits

Author	SHA1	Message	Date
David L Kreitzer	188de5ae69	Adds the ability to use an epilog remainder loop during loop unrolling and makes ... this the default behavior. Patch by Evgeny Stupachenko (evstupac@gmail.com). Differential Revision: http://reviews.llvm.org/D18158 llvm-svn: 265388	2016-04-05 12:19:35 +00:00
Junmo Park	6ebdc14cf1	[SCEVExpander] Make findExistingExpansion smarter ... Summary: Extending findExistingExpansion can use existing value in ExprValueMap. This patch gives 0.3~0.5% performance improvements on benchmarks(test-suite, spec2000, spec2006, commercial benchmark) Reviewers: mzolotukhin, sanjoy, zzheng Differential Revision: http://reviews.llvm.org/D15559 llvm-svn: 260938	2016-02-16 06:46:58 +00:00
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