[PATCH] D18094: [x86, AVX] replace masked load with full vector load when possible

[Sanjay Patel via llvm-commits]

spatel created this revision.
spatel added reviewers: ashutosh.nema, RKSimon, delena.
spatel added a subscriber: llvm-commits.
Herald added a subscriber: mcrosier.

This patch shows the benefit of converting masked vector loads to regular vector loads for x86 AVX.
I've raised the legality issue of reading the extra memory bytes on llvm-dev.
1. x86 already does this kind of optimization for multiple scalar loads -> vector load.
2. If other targets have the same flexibility, we could move this transform up to CGP or DAGCombiner.

http://reviews.llvm.org/D18094

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/masked_memop.ll

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