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-rw-r--r--llvm/lib/Analysis/CostModel.cpp576
1 files changed, 14 insertions, 562 deletions
diff --git a/llvm/lib/Analysis/CostModel.cpp b/llvm/lib/Analysis/CostModel.cpp
index 47513f3c387..867fa587bd9 100644
--- a/llvm/lib/Analysis/CostModel.cpp
+++ b/llvm/lib/Analysis/CostModel.cpp
@@ -20,26 +20,27 @@
#include "llvm/ADT/STLExtras.h"
#include "llvm/Analysis/Passes.h"
#include "llvm/Analysis/TargetTransformInfo.h"
-#include "llvm/Analysis/VectorUtils.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Instructions.h"
-#include "llvm/IR/IntrinsicInst.h"
-#include "llvm/IR/PatternMatch.h"
-#include "llvm/IR/Value.h"
#include "llvm/Pass.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
-using namespace PatternMatch;
+
+static cl::opt<TargetTransformInfo::TargetCostKind> CostKind(
+ "cost-kind", cl::desc("Target cost kind"),
+ cl::init(TargetTransformInfo::TCK_RecipThroughput),
+ cl::values(clEnumValN(TargetTransformInfo::TCK_RecipThroughput,
+ "throughput", "Reciprocal throughput"),
+ clEnumValN(TargetTransformInfo::TCK_Latency,
+ "latency", "Instruction latency"),
+ clEnumValN(TargetTransformInfo::TCK_CodeSize,
+ "code-size", "Code size")));
#define CM_NAME "cost-model"
#define DEBUG_TYPE CM_NAME
-static cl::opt<bool> EnableReduxCost("costmodel-reduxcost", cl::init(false),
- cl::Hidden,
- cl::desc("Recognize reduction patterns."));
-
namespace {
class CostModelAnalysis : public FunctionPass {
@@ -54,7 +55,9 @@ namespace {
/// Returns -1 if the cost is unknown.
/// Note, this method does not cache the cost calculation and it
/// can be expensive in some cases.
- unsigned getInstructionCost(const Instruction *I) const;
+ unsigned getInstructionCost(const Instruction *I) const {
+ return TTI->getInstructionCost(I, TargetTransformInfo::TCK_RecipThroughput);
+ }
private:
void getAnalysisUsage(AnalysisUsage &AU) const override;
@@ -92,564 +95,13 @@ CostModelAnalysis::runOnFunction(Function &F) {
return false;
}
-static bool isReverseVectorMask(ArrayRef<int> Mask) {
- for (unsigned i = 0, MaskSize = Mask.size(); i < MaskSize; ++i)
- if (Mask[i] >= 0 && Mask[i] != (int)(MaskSize - 1 - i))
- return false;
- return true;
-}
-
-static bool isSingleSourceVectorMask(ArrayRef<int> Mask) {
- bool Vec0 = false;
- bool Vec1 = false;
- for (unsigned i = 0, NumVecElts = Mask.size(); i < NumVecElts; ++i) {
- if (Mask[i] >= 0) {
- if ((unsigned)Mask[i] >= NumVecElts)
- Vec1 = true;
- else
- Vec0 = true;
- }
- }
- return !(Vec0 && Vec1);
-}
-
-static bool isZeroEltBroadcastVectorMask(ArrayRef<int> Mask) {
- for (unsigned i = 0; i < Mask.size(); ++i)
- if (Mask[i] > 0)
- return false;
- return true;
-}
-
-static bool isAlternateVectorMask(ArrayRef<int> Mask) {
- bool isAlternate = true;
- unsigned MaskSize = Mask.size();
-
- // Example: shufflevector A, B, <0,5,2,7>
- for (unsigned i = 0; i < MaskSize && isAlternate; ++i) {
- if (Mask[i] < 0)
- continue;
- isAlternate = Mask[i] == (int)((i & 1) ? MaskSize + i : i);
- }
-
- if (isAlternate)
- return true;
-
- isAlternate = true;
- // Example: shufflevector A, B, <4,1,6,3>
- for (unsigned i = 0; i < MaskSize && isAlternate; ++i) {
- if (Mask[i] < 0)
- continue;
- isAlternate = Mask[i] == (int)((i & 1) ? i : MaskSize + i);
- }
-
- return isAlternate;
-}
-
-static TargetTransformInfo::OperandValueKind getOperandInfo(Value *V) {
- TargetTransformInfo::OperandValueKind OpInfo =
- TargetTransformInfo::OK_AnyValue;
-
- // Check for a splat of a constant or for a non uniform vector of constants.
- if (isa<ConstantVector>(V) || isa<ConstantDataVector>(V)) {
- OpInfo = TargetTransformInfo::OK_NonUniformConstantValue;
- if (cast<Constant>(V)->getSplatValue() != nullptr)
- OpInfo = TargetTransformInfo::OK_UniformConstantValue;
- }
-
- // Check for a splat of a uniform value. This is not loop aware, so return
- // true only for the obviously uniform cases (argument, globalvalue)
- const Value *Splat = getSplatValue(V);
- if (Splat && (isa<Argument>(Splat) || isa<GlobalValue>(Splat)))
- OpInfo = TargetTransformInfo::OK_UniformValue;
-
- return OpInfo;
-}
-
-static bool matchPairwiseShuffleMask(ShuffleVectorInst *SI, bool IsLeft,
- unsigned Level) {
- // We don't need a shuffle if we just want to have element 0 in position 0 of
- // the vector.
- if (!SI && Level == 0 && IsLeft)
- return true;
- else if (!SI)
- return false;
-
- SmallVector<int, 32> Mask(SI->getType()->getVectorNumElements(), -1);
-
- // Build a mask of 0, 2, ... (left) or 1, 3, ... (right) depending on whether
- // we look at the left or right side.
- for (unsigned i = 0, e = (1 << Level), val = !IsLeft; i != e; ++i, val += 2)
- Mask[i] = val;
-
- SmallVector<int, 16> ActualMask = SI->getShuffleMask();
- return Mask == ActualMask;
-}
-
-namespace {
-/// Kind of the reduction data.
-enum ReductionKind {
- RK_None, /// Not a reduction.
- RK_Arithmetic, /// Binary reduction data.
- RK_MinMax, /// Min/max reduction data.
- RK_UnsignedMinMax, /// Unsigned min/max reduction data.
-};
-/// Contains opcode + LHS/RHS parts of the reduction operations.
-struct ReductionData {
- ReductionData() = delete;
- ReductionData(ReductionKind Kind, unsigned Opcode, Value *LHS, Value *RHS)
- : Opcode(Opcode), LHS(LHS), RHS(RHS), Kind(Kind) {
- assert(Kind != RK_None && "expected binary or min/max reduction only.");
- }
- unsigned Opcode = 0;
- Value *LHS = nullptr;
- Value *RHS = nullptr;
- ReductionKind Kind = RK_None;
- bool hasSameData(ReductionData &RD) const {
- return Kind == RD.Kind && Opcode == RD.Opcode;
- }
-};
-} // namespace
-
-static Optional<ReductionData> getReductionData(Instruction *I) {
- Value *L, *R;
- if (m_BinOp(m_Value(L), m_Value(R)).match(I))
- return ReductionData(RK_Arithmetic, I->getOpcode(), L, R);
- if (auto *SI = dyn_cast<SelectInst>(I)) {
- if (m_SMin(m_Value(L), m_Value(R)).match(SI) ||
- m_SMax(m_Value(L), m_Value(R)).match(SI) ||
- m_OrdFMin(m_Value(L), m_Value(R)).match(SI) ||
- m_OrdFMax(m_Value(L), m_Value(R)).match(SI) ||
- m_UnordFMin(m_Value(L), m_Value(R)).match(SI) ||
- m_UnordFMax(m_Value(L), m_Value(R)).match(SI)) {
- auto *CI = cast<CmpInst>(SI->getCondition());
- return ReductionData(RK_MinMax, CI->getOpcode(), L, R);
- }
- if (m_UMin(m_Value(L), m_Value(R)).match(SI) ||
- m_UMax(m_Value(L), m_Value(R)).match(SI)) {
- auto *CI = cast<CmpInst>(SI->getCondition());
- return ReductionData(RK_UnsignedMinMax, CI->getOpcode(), L, R);
- }
- }
- return llvm::None;
-}
-
-static ReductionKind matchPairwiseReductionAtLevel(Instruction *I,
- unsigned Level,
- unsigned NumLevels) {
- // Match one level of pairwise operations.
- // %rdx.shuf.0.0 = shufflevector <4 x float> %rdx, <4 x float> undef,
- // <4 x i32> <i32 0, i32 2 , i32 undef, i32 undef>
- // %rdx.shuf.0.1 = shufflevector <4 x float> %rdx, <4 x float> undef,
- // <4 x i32> <i32 1, i32 3, i32 undef, i32 undef>
- // %bin.rdx.0 = fadd <4 x float> %rdx.shuf.0.0, %rdx.shuf.0.1
- if (!I)
- return RK_None;
-
- assert(I->getType()->isVectorTy() && "Expecting a vector type");
-
- Optional<ReductionData> RD = getReductionData(I);
- if (!RD)
- return RK_None;
-
- ShuffleVectorInst *LS = dyn_cast<ShuffleVectorInst>(RD->LHS);
- if (!LS && Level)
- return RK_None;
- ShuffleVectorInst *RS = dyn_cast<ShuffleVectorInst>(RD->RHS);
- if (!RS && Level)
- return RK_None;
-
- // On level 0 we can omit one shufflevector instruction.
- if (!Level && !RS && !LS)
- return RK_None;
-
- // Shuffle inputs must match.
- Value *NextLevelOpL = LS ? LS->getOperand(0) : nullptr;
- Value *NextLevelOpR = RS ? RS->getOperand(0) : nullptr;
- Value *NextLevelOp = nullptr;
- if (NextLevelOpR && NextLevelOpL) {
- // If we have two shuffles their operands must match.
- if (NextLevelOpL != NextLevelOpR)
- return RK_None;
-
- NextLevelOp = NextLevelOpL;
- } else if (Level == 0 && (NextLevelOpR || NextLevelOpL)) {
- // On the first level we can omit the shufflevector <0, undef,...>. So the
- // input to the other shufflevector <1, undef> must match with one of the
- // inputs to the current binary operation.
- // Example:
- // %NextLevelOpL = shufflevector %R, <1, undef ...>
- // %BinOp = fadd %NextLevelOpL, %R
- if (NextLevelOpL && NextLevelOpL != RD->RHS)
- return RK_None;
- else if (NextLevelOpR && NextLevelOpR != RD->LHS)
- return RK_None;
-
- NextLevelOp = NextLevelOpL ? RD->RHS : RD->LHS;
- } else {
- return RK_None;
- }
-
- // Check that the next levels binary operation exists and matches with the
- // current one.
- if (Level + 1 != NumLevels) {
- Optional<ReductionData> NextLevelRD =
- getReductionData(cast<Instruction>(NextLevelOp));
- if (!NextLevelRD || !RD->hasSameData(*NextLevelRD))
- return RK_None;
- }
-
- // Shuffle mask for pairwise operation must match.
- if (matchPairwiseShuffleMask(LS, /*IsLeft=*/true, Level)) {
- if (!matchPairwiseShuffleMask(RS, /*IsLeft=*/false, Level))
- return RK_None;
- } else if (matchPairwiseShuffleMask(RS, /*IsLeft=*/true, Level)) {
- if (!matchPairwiseShuffleMask(LS, /*IsLeft=*/false, Level))
- return RK_None;
- } else {
- return RK_None;
- }
-
- if (++Level == NumLevels)
- return RD->Kind;
-
- // Match next level.
- return matchPairwiseReductionAtLevel(cast<Instruction>(NextLevelOp), Level,
- NumLevels);
-}
-
-static ReductionKind matchPairwiseReduction(const ExtractElementInst *ReduxRoot,
- unsigned &Opcode, Type *&Ty) {
- if (!EnableReduxCost)
- return RK_None;
-
- // Need to extract the first element.
- ConstantInt *CI = dyn_cast<ConstantInt>(ReduxRoot->getOperand(1));
- unsigned Idx = ~0u;
- if (CI)
- Idx = CI->getZExtValue();
- if (Idx != 0)
- return RK_None;
-
- auto *RdxStart = dyn_cast<Instruction>(ReduxRoot->getOperand(0));
- if (!RdxStart)
- return RK_None;
- Optional<ReductionData> RD = getReductionData(RdxStart);
- if (!RD)
- return RK_None;
-
- Type *VecTy = RdxStart->getType();
- unsigned NumVecElems = VecTy->getVectorNumElements();
- if (!isPowerOf2_32(NumVecElems))
- return RK_None;
-
- // We look for a sequence of shuffle,shuffle,add triples like the following
- // that builds a pairwise reduction tree.
- //
- // (X0, X1, X2, X3)
- // (X0 + X1, X2 + X3, undef, undef)
- // ((X0 + X1) + (X2 + X3), undef, undef, undef)
- //
- // %rdx.shuf.0.0 = shufflevector <4 x float> %rdx, <4 x float> undef,
- // <4 x i32> <i32 0, i32 2 , i32 undef, i32 undef>
- // %rdx.shuf.0.1 = shufflevector <4 x float> %rdx, <4 x float> undef,
- // <4 x i32> <i32 1, i32 3, i32 undef, i32 undef>
- // %bin.rdx.0 = fadd <4 x float> %rdx.shuf.0.0, %rdx.shuf.0.1
- // %rdx.shuf.1.0 = shufflevector <4 x float> %bin.rdx.0, <4 x float> undef,
- // <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef>
- // %rdx.shuf.1.1 = shufflevector <4 x float> %bin.rdx.0, <4 x float> undef,
- // <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
- // %bin.rdx8 = fadd <4 x float> %rdx.shuf.1.0, %rdx.shuf.1.1
- // %r = extractelement <4 x float> %bin.rdx8, i32 0
- if (matchPairwiseReductionAtLevel(RdxStart, 0, Log2_32(NumVecElems)) ==
- RK_None)
- return RK_None;
-
- Opcode = RD->Opcode;
- Ty = VecTy;
-
- return RD->Kind;
-}
-
-static std::pair<Value *, ShuffleVectorInst *>
-getShuffleAndOtherOprd(Value *L, Value *R) {
- ShuffleVectorInst *S = nullptr;
-
- if ((S = dyn_cast<ShuffleVectorInst>(L)))
- return std::make_pair(R, S);
-
- S = dyn_cast<ShuffleVectorInst>(R);
- return std::make_pair(L, S);
-}
-
-static ReductionKind
-matchVectorSplittingReduction(const ExtractElementInst *ReduxRoot,
- unsigned &Opcode, Type *&Ty) {
- if (!EnableReduxCost)
- return RK_None;
-
- // Need to extract the first element.
- ConstantInt *CI = dyn_cast<ConstantInt>(ReduxRoot->getOperand(1));
- unsigned Idx = ~0u;
- if (CI)
- Idx = CI->getZExtValue();
- if (Idx != 0)
- return RK_None;
-
- auto *RdxStart = dyn_cast<Instruction>(ReduxRoot->getOperand(0));
- if (!RdxStart)
- return RK_None;
- Optional<ReductionData> RD = getReductionData(RdxStart);
- if (!RD)
- return RK_None;
-
- Type *VecTy = ReduxRoot->getOperand(0)->getType();
- unsigned NumVecElems = VecTy->getVectorNumElements();
- if (!isPowerOf2_32(NumVecElems))
- return RK_None;
-
- // We look for a sequence of shuffles and adds like the following matching one
- // fadd, shuffle vector pair at a time.
- //
- // %rdx.shuf = shufflevector <4 x float> %rdx, <4 x float> undef,
- // <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
- // %bin.rdx = fadd <4 x float> %rdx, %rdx.shuf
- // %rdx.shuf7 = shufflevector <4 x float> %bin.rdx, <4 x float> undef,
- // <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
- // %bin.rdx8 = fadd <4 x float> %bin.rdx, %rdx.shuf7
- // %r = extractelement <4 x float> %bin.rdx8, i32 0
-
- unsigned MaskStart = 1;
- Instruction *RdxOp = RdxStart;
- SmallVector<int, 32> ShuffleMask(NumVecElems, 0);
- unsigned NumVecElemsRemain = NumVecElems;
- while (NumVecElemsRemain - 1) {
- // Check for the right reduction operation.
- if (!RdxOp)
- return RK_None;
- Optional<ReductionData> RDLevel = getReductionData(RdxOp);
- if (!RDLevel || !RDLevel->hasSameData(*RD))
- return RK_None;
-
- Value *NextRdxOp;
- ShuffleVectorInst *Shuffle;
- std::tie(NextRdxOp, Shuffle) =
- getShuffleAndOtherOprd(RDLevel->LHS, RDLevel->RHS);
-
- // Check the current reduction operation and the shuffle use the same value.
- if (Shuffle == nullptr)
- return RK_None;
- if (Shuffle->getOperand(0) != NextRdxOp)
- return RK_None;
-
- // Check that shuffle masks matches.
- for (unsigned j = 0; j != MaskStart; ++j)
- ShuffleMask[j] = MaskStart + j;
- // Fill the rest of the mask with -1 for undef.
- std::fill(&ShuffleMask[MaskStart], ShuffleMask.end(), -1);
-
- SmallVector<int, 16> Mask = Shuffle->getShuffleMask();
- if (ShuffleMask != Mask)
- return RK_None;
-
- RdxOp = dyn_cast<Instruction>(NextRdxOp);
- NumVecElemsRemain /= 2;
- MaskStart *= 2;
- }
-
- Opcode = RD->Opcode;
- Ty = VecTy;
- return RD->Kind;
-}
-
-unsigned CostModelAnalysis::getInstructionCost(const Instruction *I) const {
- if (!TTI)
- return -1;
-
- switch (I->getOpcode()) {
- case Instruction::GetElementPtr:
- return TTI->getUserCost(I);
-
- case Instruction::Ret:
- case Instruction::PHI:
- case Instruction::Br: {
- return TTI->getCFInstrCost(I->getOpcode());
- }
- case Instruction::Add:
- case Instruction::FAdd:
- case Instruction::Sub:
- case Instruction::FSub:
- case Instruction::Mul:
- case Instruction::FMul:
- case Instruction::UDiv:
- case Instruction::SDiv:
- case Instruction::FDiv:
- case Instruction::URem:
- case Instruction::SRem:
- case Instruction::FRem:
- case Instruction::Shl:
- case Instruction::LShr:
- case Instruction::AShr:
- case Instruction::And:
- case Instruction::Or:
- case Instruction::Xor: {
- TargetTransformInfo::OperandValueKind Op1VK =
- getOperandInfo(I->getOperand(0));
- TargetTransformInfo::OperandValueKind Op2VK =
- getOperandInfo(I->getOperand(1));
- SmallVector<const Value*, 2> Operands(I->operand_values());
- return TTI->getArithmeticInstrCost(I->getOpcode(), I->getType(), Op1VK,
- Op2VK, TargetTransformInfo::OP_None,
- TargetTransformInfo::OP_None,
- Operands);
- }
- case Instruction::Select: {
- const SelectInst *SI = cast<SelectInst>(I);
- Type *CondTy = SI->getCondition()->getType();
- return TTI->getCmpSelInstrCost(I->getOpcode(), I->getType(), CondTy, I);
- }
- case Instruction::ICmp:
- case Instruction::FCmp: {
- Type *ValTy = I->getOperand(0)->getType();
- return TTI->getCmpSelInstrCost(I->getOpcode(), ValTy, I->getType(), I);
- }
- case Instruction::Store: {
- const StoreInst *SI = cast<StoreInst>(I);
- Type *ValTy = SI->getValueOperand()->getType();
- return TTI->getMemoryOpCost(I->getOpcode(), ValTy,
- SI->getAlignment(),
- SI->getPointerAddressSpace(), I);
- }
- case Instruction::Load: {
- const LoadInst *LI = cast<LoadInst>(I);
- return TTI->getMemoryOpCost(I->getOpcode(), I->getType(),
- LI->getAlignment(),
- LI->getPointerAddressSpace(), I);
- }
- case Instruction::ZExt:
- case Instruction::SExt:
- case Instruction::FPToUI:
- case Instruction::FPToSI:
- case Instruction::FPExt:
- case Instruction::PtrToInt:
- case Instruction::IntToPtr:
- case Instruction::SIToFP:
- case Instruction::UIToFP:
- case Instruction::Trunc:
- case Instruction::FPTrunc:
- case Instruction::BitCast:
- case Instruction::AddrSpaceCast: {
- Type *SrcTy = I->getOperand(0)->getType();
- return TTI->getCastInstrCost(I->getOpcode(), I->getType(), SrcTy, I);
- }
- case Instruction::ExtractElement: {
- const ExtractElementInst * EEI = cast<ExtractElementInst>(I);
- ConstantInt *CI = dyn_cast<ConstantInt>(I->getOperand(1));
- unsigned Idx = -1;
- if (CI)
- Idx = CI->getZExtValue();
-
- // Try to match a reduction sequence (series of shufflevector and vector
- // adds followed by a extractelement).
- unsigned ReduxOpCode;
- Type *ReduxType;
-
- switch (matchVectorSplittingReduction(EEI, ReduxOpCode, ReduxType)) {
- case RK_Arithmetic:
- return TTI->getArithmeticReductionCost(ReduxOpCode, ReduxType,
- /*IsPairwiseForm=*/false);
- case RK_MinMax:
- return TTI->getMinMaxReductionCost(
- ReduxType, CmpInst::makeCmpResultType(ReduxType),
- /*IsPairwiseForm=*/false, /*IsUnsigned=*/false);
- case RK_UnsignedMinMax:
- return TTI->getMinMaxReductionCost(
- ReduxType, CmpInst::makeCmpResultType(ReduxType),
- /*IsPairwiseForm=*/false, /*IsUnsigned=*/true);
- case RK_None:
- break;
- }
-
- switch (matchPairwiseReduction(EEI, ReduxOpCode, ReduxType)) {
- case RK_Arithmetic:
- return TTI->getArithmeticReductionCost(ReduxOpCode, ReduxType,
- /*IsPairwiseForm=*/true);
- case RK_MinMax:
- return TTI->getMinMaxReductionCost(
- ReduxType, CmpInst::makeCmpResultType(ReduxType),
- /*IsPairwiseForm=*/true, /*IsUnsigned=*/false);
- case RK_UnsignedMinMax:
- return TTI->getMinMaxReductionCost(
- ReduxType, CmpInst::makeCmpResultType(ReduxType),
- /*IsPairwiseForm=*/true, /*IsUnsigned=*/true);
- case RK_None:
- break;
- }
-
- return TTI->getVectorInstrCost(I->getOpcode(),
- EEI->getOperand(0)->getType(), Idx);
- }
- case Instruction::InsertElement: {
- const InsertElementInst * IE = cast<InsertElementInst>(I);
- ConstantInt *CI = dyn_cast<ConstantInt>(IE->getOperand(2));
- unsigned Idx = -1;
- if (CI)
- Idx = CI->getZExtValue();
- return TTI->getVectorInstrCost(I->getOpcode(),
- IE->getType(), Idx);
- }
- case Instruction::ShuffleVector: {
- const ShuffleVectorInst *Shuffle = cast<ShuffleVectorInst>(I);
- Type *VecTypOp0 = Shuffle->getOperand(0)->getType();
- unsigned NumVecElems = VecTypOp0->getVectorNumElements();
- SmallVector<int, 16> Mask = Shuffle->getShuffleMask();
-
- if (NumVecElems == Mask.size()) {
- if (isReverseVectorMask(Mask))
- return TTI->getShuffleCost(TargetTransformInfo::SK_Reverse, VecTypOp0,
- 0, nullptr);
- if (isAlternateVectorMask(Mask))
- return TTI->getShuffleCost(TargetTransformInfo::SK_Alternate,
- VecTypOp0, 0, nullptr);
-
- if (isZeroEltBroadcastVectorMask(Mask))
- return TTI->getShuffleCost(TargetTransformInfo::SK_Broadcast,
- VecTypOp0, 0, nullptr);
-
- if (isSingleSourceVectorMask(Mask))
- return TTI->getShuffleCost(TargetTransformInfo::SK_PermuteSingleSrc,
- VecTypOp0, 0, nullptr);
-
- return TTI->getShuffleCost(TargetTransformInfo::SK_PermuteTwoSrc,
- VecTypOp0, 0, nullptr);
- }
-
- return -1;
- }
- case Instruction::Call:
- if (const IntrinsicInst *II = dyn_cast<IntrinsicInst>(I)) {
- SmallVector<Value *, 4> Args(II->arg_operands());
-
- FastMathFlags FMF;
- if (auto *FPMO = dyn_cast<FPMathOperator>(II))
- FMF = FPMO->getFastMathFlags();
-
- return TTI->getIntrinsicInstrCost(II->getIntrinsicID(), II->getType(),
- Args, FMF);
- }
- return -1;
- default:
- // We don't have any information on this instruction.
- return -1;
- }
-}
-
void CostModelAnalysis::print(raw_ostream &OS, const Module*) const {
if (!F)
return;
for (BasicBlock &B : *F) {
for (Instruction &Inst : B) {
- unsigned Cost = getInstructionCost(&Inst);
+ unsigned Cost = TTI->getInstructionCost(&Inst, CostKind);
if (Cost != (unsigned)-1)
OS << "Cost Model: Found an estimated cost of " << Cost;
else
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