[PATCH] D68035: [PowerPC] Extend custom lower of vector truncate to handle wider input

[Roland Froese via Phabricator via llvm-commits]

RolandF created this revision.
RolandF added a reviewer: PowerPC.
Herald added subscribers: llvm-commits, shchenz, wuzish, jsji, MaskRay, kbarton, hiraditya, nemanjai.
Herald added a project: LLVM.

Current custom lowering of truncate vector handles a source of up to 128 bits, but that only uses one of the two shuffle vector operands.  Extend it to use both operands to handle 256 bit sources.


https://reviews.llvm.org/D68035

Files:
  llvm/lib/Target/PowerPC/PPCISelLowering.cpp
  llvm/test/CodeGen/PowerPC/vec-trunc.ll

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