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Flip on vectorization of bswap intrinsics.

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The cost model conservatively assumes that it will always get scalarized and
that's about as good as we can get with the generic TTI; reasoning whether a
shuffle with an efficient lowering is available is hard. We can override that
conservative estimate for some targets in the future.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209125 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer
2014-05-19 13:48:08 +00:00
parent bb81d9d5fa
commit 29e068bac0
2 changed files with 45 additions and 0 deletions
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include/llvm/Transforms/Utils/VectorUtils.h
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@ -43,6 +43,7 @@ static inline bool isTriviallyVectorizable(Intrinsic::ID ID) {
case Intrinsic::rint:
case Intrinsic::nearbyint:
case Intrinsic::round:
case Intrinsic::bswap:
case Intrinsic::ctpop:
case Intrinsic::pow:
case Intrinsic::fma: