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Vasileios Porpodas
be0be977ce
[SLP] Recommit: Look-ahead operand reordering heuristic.
Summary: This patch introduces a new heuristic for guiding operand reordering. The new "look-ahead" heuristic can look beyond the immediate predecessors. This helps break ties when the immediate predecessors have identical opcodes (see lit test for an example). Reviewers: RKSimon, ABataev, dtemirbulatov, Ayal, hfinkel, rnk Reviewed By: RKSimon, dtemirbulatov Subscribers: hiraditya, phosek, rnk, rcorcs, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D60897 llvm-svn: 364964
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