[PATCH] D64205: [X86][SSE] EltsFromConsecutiveLoads - add basic dereferenceable support

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon created this revision.
RKSimon added reviewers: efriedma, niravd, spatel, craig.topper.
Herald added a project: LLVM.

This patch checks to see if the vector element loads are based off a dereferenceable pointer that covers the entire vector width, in which case we don't need to have element loads at both extremes of the vector width - just the start (base pointer) of it.

Another step towards partial vector loads......


Repository:
  rL LLVM

https://reviews.llvm.org/D64205

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/load-partial.ll

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