[PATCH] D66804: [TargetLowering] Add buildLegalVectorShuffle facility to help build legal shuffles

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon accepted this revision.
RKSimon added a comment.

LGTM



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Comment at: include/llvm/CodeGen/TargetLowering.h:3196
+  /// Tries to build a legal vector shuffle using the provided parameters
+  /// or equivalent variations. Return an empty SValue if the operation fails.
+  SDValue buildLegalVectorShuffle(EVT VT, const SDLoc &DL, SDValue N0,
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Make it clear that Mask may be altered whether this function succeeds or fails.


Repository:
  rL LLVM

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https://reviews.llvm.org/D66804