Florian Hahn 00692a7adf [VPlan, SLP] Add simple SLP analysis on top of VPlan. ... This patch adds an initial implementation of the look-ahead SLP tree construction described in 'Look-Ahead SLP: Auto-vectorization in the Presence of Commutative Operations, CGO 2018 by Vasileios Porpodas, Rodrigo C. O. Rocha, Luís F. W. Góes'. It returns an SLP tree represented as VPInstructions, with combined instructions represented as a single, wider VPInstruction. This initial version does not support instructions with multiple different users (either inside or outside the SLP tree) or non-instruction operands; it won't generate any shuffles or insertelement instructions. It also just adds the analysis that builds an SLP tree rooted in a set of stores. It does not include any cost modeling or memory legality checks. The plan is to integrate it with VPlan based cost modeling, once available and to only apply it to operations that can be widened. A follow-up patch will add a support for replacing instructions in a VPlan with their SLP counter parts. Reviewers: Ayal, mssimpso, rengolin, mkuper, hfinkel, hsaito, dcaballe, vporpo, RKSimon, ABataev Reviewed By: rengolin Differential Revision: https://reviews.llvm.org/D4949 llvm-svn: 346857		2018-11-14 13:11:49 +00:00
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CMakeLists.txt	[VPlan, SLP] Add simple SLP analysis on top of VPlan.	2018-11-14 13:11:49 +00:00
VPlanDominatorTreeTest.cpp
VPlanHCFGTest.cpp
VPlanLoopInfoTest.cpp
VPlanSlpTest.cpp	[VPlan, SLP] Add simple SLP analysis on top of VPlan.	2018-11-14 13:11:49 +00:00
VPlanTest.cpp
VPlanTestBase.h