diff options
Diffstat (limited to 'llvm/lib')
4 files changed, 16 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/TargetTransformInfo.cpp b/llvm/lib/Analysis/TargetTransformInfo.cpp index 7744dbd8ca9..9843eed4c5a 100644 --- a/llvm/lib/Analysis/TargetTransformInfo.cpp +++ b/llvm/lib/Analysis/TargetTransformInfo.cpp @@ -344,6 +344,10 @@ bool TargetTransformInfo::shouldMaximizeVectorBandwidth(bool OptSize) const { return TTIImpl->shouldMaximizeVectorBandwidth(OptSize); } +unsigned TargetTransformInfo::getMinimumVF(unsigned ElemWidth) const { + return TTIImpl->getMinimumVF(ElemWidth); +} + bool TargetTransformInfo::shouldConsiderAddressTypePromotion( const Instruction &I, bool &AllowPromotionWithoutCommonHeader) const { return TTIImpl->shouldConsiderAddressTypePromotion( diff --git a/llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp b/llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp index d5401a277b6..764e8b8b788 100644 --- a/llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp +++ b/llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp @@ -76,6 +76,10 @@ unsigned HexagonTTIImpl::getMinVectorRegisterBitWidth() const { return getST()->useHVXOps() ? getST()->getVectorLength()*8 : 0; } +unsigned HexagonTTIImpl::getMinimumVF(unsigned ElemWidth) const { + return (8 * getST()->getVectorLength()) / ElemWidth; +} + unsigned HexagonTTIImpl::getMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment, unsigned AddressSpace, const Instruction *I) { if (Opcode == Instruction::Load && Src->isVectorTy()) { diff --git a/llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.h b/llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.h index 02324d7efc4..61ffdf64f9f 100644 --- a/llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.h +++ b/llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.h @@ -74,6 +74,7 @@ public: unsigned getRegisterBitWidth(bool Vector) const; unsigned getMinVectorRegisterBitWidth() const; bool shouldMaximizeVectorBandwidth(bool OptSize) const { return true; } + unsigned getMinimumVF(unsigned ElemWidth) const; bool supportsEfficientVectorElementLoadStore() { return false; diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp index 51be86ff337..fa736610cf5 100644 --- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp +++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp @@ -6143,6 +6143,13 @@ LoopVectorizationCostModel::computeFeasibleMaxVF(bool OptForSize, break; } } + if (unsigned MinVF = TTI.getMinimumVF(SmallestType)) { + if (MaxVF < MinVF) { + DEBUG(dbgs() << "LV: Overriding calculated MaxVF(" << MaxVF + << ") with target's minimum: " << MinVF << '\n'); + MaxVF = MinVF; + } + } } return MaxVF; } |
