| // Copyright 2016 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/compiler/simd-scalar-lowering.h" |
| |
| #include "src/compiler/diamond.h" |
| #include "src/compiler/linkage.h" |
| #include "src/compiler/node-matchers.h" |
| #include "src/compiler/node-properties.h" |
| #include "src/compiler/node.h" |
| #include "src/compiler/wasm-compiler.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace compiler { |
| |
| namespace { |
| static const int kNumLanes32 = 4; |
| static const int kNumLanes16 = 8; |
| static const int kNumLanes8 = 16; |
| static const int32_t kMask16 = 0xFFFF; |
| static const int32_t kMask8 = 0xFF; |
| static const int32_t kShift16 = 16; |
| static const int32_t kShift8 = 24; |
| } // anonymous |
| |
| SimdScalarLowering::SimdScalarLowering( |
| JSGraph* jsgraph, Signature<MachineRepresentation>* signature) |
| : jsgraph_(jsgraph), |
| state_(jsgraph->graph(), 3), |
| stack_(jsgraph_->zone()), |
| replacements_(nullptr), |
| signature_(signature), |
| placeholder_(graph()->NewNode(common()->Parameter(-2, "placeholder"), |
| graph()->start())), |
| parameter_count_after_lowering_(-1) { |
| DCHECK_NOT_NULL(graph()); |
| DCHECK_NOT_NULL(graph()->end()); |
| replacements_ = zone()->NewArray<Replacement>(graph()->NodeCount()); |
| memset(replacements_, 0, sizeof(Replacement) * graph()->NodeCount()); |
| } |
| |
| void SimdScalarLowering::LowerGraph() { |
| stack_.push_back({graph()->end(), 0}); |
| state_.Set(graph()->end(), State::kOnStack); |
| replacements_[graph()->end()->id()].type = SimdType::kInt32x4; |
| |
| while (!stack_.empty()) { |
| NodeState& top = stack_.back(); |
| if (top.input_index == top.node->InputCount()) { |
| // All inputs of top have already been lowered, now lower top. |
| stack_.pop_back(); |
| state_.Set(top.node, State::kVisited); |
| LowerNode(top.node); |
| } else { |
| // Push the next input onto the stack. |
| Node* input = top.node->InputAt(top.input_index++); |
| if (state_.Get(input) == State::kUnvisited) { |
| SetLoweredType(input, top.node); |
| if (input->opcode() == IrOpcode::kPhi) { |
| // To break cycles with phi nodes we push phis on a separate stack so |
| // that they are processed after all other nodes. |
| PreparePhiReplacement(input); |
| stack_.push_front({input, 0}); |
| } else if (input->opcode() == IrOpcode::kEffectPhi || |
| input->opcode() == IrOpcode::kLoop) { |
| stack_.push_front({input, 0}); |
| } else { |
| stack_.push_back({input, 0}); |
| } |
| state_.Set(input, State::kOnStack); |
| } |
| } |
| } |
| } |
| |
| #define FOREACH_INT32X4_OPCODE(V) \ |
| V(I32x4Splat) \ |
| V(I32x4ExtractLane) \ |
| V(I32x4ReplaceLane) \ |
| V(I32x4SConvertF32x4) \ |
| V(I32x4UConvertF32x4) \ |
| V(I32x4Neg) \ |
| V(I32x4Shl) \ |
| V(I32x4ShrS) \ |
| V(I32x4Add) \ |
| V(I32x4Sub) \ |
| V(I32x4Mul) \ |
| V(I32x4MinS) \ |
| V(I32x4MaxS) \ |
| V(I32x4ShrU) \ |
| V(I32x4MinU) \ |
| V(I32x4MaxU) \ |
| V(I32x4Eq) \ |
| V(I32x4Ne) \ |
| V(I32x4LtS) \ |
| V(I32x4LeS) \ |
| V(I32x4GtS) \ |
| V(I32x4GeS) \ |
| V(I32x4LtU) \ |
| V(I32x4LeU) \ |
| V(I32x4GtU) \ |
| V(I32x4GeU) \ |
| V(S128And) \ |
| V(S128Or) \ |
| V(S128Xor) \ |
| V(S128Not) |
| |
| #define FOREACH_FLOAT32X4_OPCODE(V) \ |
| V(F32x4Splat) \ |
| V(F32x4ExtractLane) \ |
| V(F32x4ReplaceLane) \ |
| V(F32x4SConvertI32x4) \ |
| V(F32x4UConvertI32x4) \ |
| V(F32x4Abs) \ |
| V(F32x4Neg) \ |
| V(F32x4Add) \ |
| V(F32x4Sub) \ |
| V(F32x4Mul) \ |
| V(F32x4Min) \ |
| V(F32x4Max) |
| |
| #define FOREACH_FLOAT32X4_TO_INT32X4OPCODE(V) \ |
| V(F32x4Eq) \ |
| V(F32x4Ne) \ |
| V(F32x4Lt) \ |
| V(F32x4Le) \ |
| V(F32x4Gt) \ |
| V(F32x4Ge) |
| |
| #define FOREACH_INT16X8_OPCODE(V) \ |
| V(I16x8Splat) \ |
| V(I16x8ExtractLane) \ |
| V(I16x8ReplaceLane) \ |
| V(I16x8Neg) \ |
| V(I16x8Shl) \ |
| V(I16x8ShrS) \ |
| V(I16x8Add) \ |
| V(I16x8AddSaturateS) \ |
| V(I16x8Sub) \ |
| V(I16x8SubSaturateS) \ |
| V(I16x8Mul) \ |
| V(I16x8MinS) \ |
| V(I16x8MaxS) \ |
| V(I16x8ShrU) \ |
| V(I16x8AddSaturateU) \ |
| V(I16x8SubSaturateU) \ |
| V(I16x8MinU) \ |
| V(I16x8MaxU) \ |
| V(I16x8Eq) \ |
| V(I16x8Ne) \ |
| V(I16x8LtS) \ |
| V(I16x8LeS) \ |
| V(I16x8LtU) \ |
| V(I16x8LeU) |
| |
| #define FOREACH_INT8X16_OPCODE(V) \ |
| V(I8x16Splat) \ |
| V(I8x16ExtractLane) \ |
| V(I8x16ReplaceLane) \ |
| V(I8x16Neg) \ |
| V(I8x16Shl) \ |
| V(I8x16ShrS) \ |
| V(I8x16Add) \ |
| V(I8x16AddSaturateS) \ |
| V(I8x16Sub) \ |
| V(I8x16SubSaturateS) \ |
| V(I8x16Mul) \ |
| V(I8x16MinS) \ |
| V(I8x16MaxS) \ |
| V(I8x16ShrU) \ |
| V(I8x16AddSaturateU) \ |
| V(I8x16SubSaturateU) \ |
| V(I8x16MinU) \ |
| V(I8x16MaxU) \ |
| V(I8x16Eq) \ |
| V(I8x16Ne) \ |
| V(I8x16LtS) \ |
| V(I8x16LeS) \ |
| V(I8x16LtU) \ |
| V(I8x16LeU) |
| |
| MachineType SimdScalarLowering::MachineTypeFrom(SimdType simdType) { |
| switch (simdType) { |
| case SimdType::kFloat32x4: |
| return MachineType::Float32(); |
| case SimdType::kInt32x4: |
| return MachineType::Int32(); |
| case SimdType::kInt16x8: |
| return MachineType::Int16(); |
| case SimdType::kInt8x16: |
| return MachineType::Int8(); |
| } |
| return MachineType::None(); |
| } |
| |
| void SimdScalarLowering::SetLoweredType(Node* node, Node* output) { |
| switch (node->opcode()) { |
| #define CASE_STMT(name) case IrOpcode::k##name: |
| FOREACH_INT32X4_OPCODE(CASE_STMT) |
| case IrOpcode::kReturn: |
| case IrOpcode::kParameter: |
| case IrOpcode::kCall: { |
| replacements_[node->id()].type = SimdType::kInt32x4; |
| break; |
| } |
| FOREACH_FLOAT32X4_OPCODE(CASE_STMT) { |
| replacements_[node->id()].type = SimdType::kFloat32x4; |
| break; |
| } |
| FOREACH_FLOAT32X4_TO_INT32X4OPCODE(CASE_STMT) { |
| replacements_[node->id()].type = SimdType::kInt32x4; |
| break; |
| } |
| FOREACH_INT16X8_OPCODE(CASE_STMT) { |
| replacements_[node->id()].type = SimdType::kInt16x8; |
| break; |
| } |
| FOREACH_INT8X16_OPCODE(CASE_STMT) { |
| replacements_[node->id()].type = SimdType::kInt8x16; |
| break; |
| } |
| default: { |
| switch (output->opcode()) { |
| case IrOpcode::kF32x4SConvertI32x4: |
| case IrOpcode::kF32x4UConvertI32x4: { |
| replacements_[node->id()].type = SimdType::kInt32x4; |
| break; |
| } |
| FOREACH_FLOAT32X4_TO_INT32X4OPCODE(CASE_STMT) |
| case IrOpcode::kI32x4SConvertF32x4: |
| case IrOpcode::kI32x4UConvertF32x4: { |
| replacements_[node->id()].type = SimdType::kFloat32x4; |
| break; |
| } |
| case IrOpcode::kS128Select: { |
| replacements_[node->id()].type = SimdType::kInt32x4; |
| break; |
| } |
| default: { |
| replacements_[node->id()].type = replacements_[output->id()].type; |
| } |
| } |
| } |
| #undef CASE_STMT |
| } |
| } |
| |
| static int GetParameterIndexAfterLoweringSimd128( |
| Signature<MachineRepresentation>* signature, int old_index) { |
| // In function calls, the simd128 types are passed as 4 Int32 types. The |
| // parameters are typecast to the types as needed for various operations. |
| int result = old_index; |
| for (int i = 0; i < old_index; ++i) { |
| if (signature->GetParam(i) == MachineRepresentation::kSimd128) { |
| result += 3; |
| } |
| } |
| return result; |
| } |
| |
| int SimdScalarLowering::GetParameterCountAfterLowering() { |
| if (parameter_count_after_lowering_ == -1) { |
| // GetParameterIndexAfterLoweringSimd128(parameter_count) returns the |
| // parameter count after lowering. |
| parameter_count_after_lowering_ = GetParameterIndexAfterLoweringSimd128( |
| signature(), static_cast<int>(signature()->parameter_count())); |
| } |
| return parameter_count_after_lowering_; |
| } |
| |
| static int GetReturnCountAfterLoweringSimd128( |
| Signature<MachineRepresentation>* signature) { |
| int result = static_cast<int>(signature->return_count()); |
| for (int i = 0; i < static_cast<int>(signature->return_count()); ++i) { |
| if (signature->GetReturn(i) == MachineRepresentation::kSimd128) { |
| result += 3; |
| } |
| } |
| return result; |
| } |
| |
| int SimdScalarLowering::NumLanes(SimdType type) { |
| int num_lanes = 0; |
| if (type == SimdType::kFloat32x4 || type == SimdType::kInt32x4) { |
| num_lanes = kNumLanes32; |
| } else if (type == SimdType::kInt16x8) { |
| num_lanes = kNumLanes16; |
| } else if (type == SimdType::kInt8x16) { |
| num_lanes = kNumLanes8; |
| } else { |
| UNREACHABLE(); |
| } |
| return num_lanes; |
| } |
| |
| constexpr int SimdScalarLowering::kLaneOffsets[]; |
| |
| void SimdScalarLowering::GetIndexNodes(Node* index, Node** new_indices, |
| SimdType type) { |
| int num_lanes = NumLanes(type); |
| int lane_width = kSimd128Size / num_lanes; |
| int laneIndex = kLaneOffsets[0] / lane_width; |
| new_indices[laneIndex] = index; |
| for (int i = 1; i < num_lanes; ++i) { |
| laneIndex = kLaneOffsets[i * lane_width] / lane_width; |
| new_indices[laneIndex] = graph()->NewNode( |
| machine()->Int32Add(), index, |
| graph()->NewNode( |
| common()->Int32Constant(static_cast<int>(i) * lane_width))); |
| } |
| } |
| |
| void SimdScalarLowering::LowerLoadOp(MachineRepresentation rep, Node* node, |
| const Operator* load_op, SimdType type) { |
| if (rep == MachineRepresentation::kSimd128) { |
| Node* base = node->InputAt(0); |
| Node* index = node->InputAt(1); |
| int num_lanes = NumLanes(type); |
| Node** indices = zone()->NewArray<Node*>(num_lanes); |
| GetIndexNodes(index, indices, type); |
| Node** rep_nodes = zone()->NewArray<Node*>(num_lanes); |
| rep_nodes[0] = node; |
| rep_nodes[0]->ReplaceInput(1, indices[0]); |
| NodeProperties::ChangeOp(rep_nodes[0], load_op); |
| if (node->InputCount() > 2) { |
| DCHECK_LT(3, node->InputCount()); |
| Node* effect_input = node->InputAt(2); |
| Node* control_input = node->InputAt(3); |
| for (int i = num_lanes - 1; i > 0; --i) { |
| rep_nodes[i] = graph()->NewNode(load_op, base, indices[i], effect_input, |
| control_input); |
| effect_input = rep_nodes[i]; |
| } |
| rep_nodes[0]->ReplaceInput(2, rep_nodes[1]); |
| } else { |
| for (int i = 1; i < num_lanes; ++i) { |
| rep_nodes[i] = graph()->NewNode(load_op, base, indices[i]); |
| } |
| } |
| ReplaceNode(node, rep_nodes, num_lanes); |
| } else { |
| DefaultLowering(node); |
| } |
| } |
| |
| void SimdScalarLowering::LowerStoreOp(MachineRepresentation rep, Node* node, |
| const Operator* store_op, |
| SimdType rep_type) { |
| if (rep == MachineRepresentation::kSimd128) { |
| Node* base = node->InputAt(0); |
| Node* index = node->InputAt(1); |
| int num_lanes = NumLanes(rep_type); |
| Node** indices = zone()->NewArray<Node*>(num_lanes); |
| GetIndexNodes(index, indices, rep_type); |
| DCHECK_LT(2, node->InputCount()); |
| Node* value = node->InputAt(2); |
| DCHECK(HasReplacement(1, value)); |
| Node** rep_nodes = zone()->NewArray<Node*>(num_lanes); |
| rep_nodes[0] = node; |
| Node** rep_inputs = GetReplacementsWithType(value, rep_type); |
| rep_nodes[0]->ReplaceInput(2, rep_inputs[0]); |
| rep_nodes[0]->ReplaceInput(1, indices[0]); |
| NodeProperties::ChangeOp(node, store_op); |
| if (node->InputCount() > 3) { |
| DCHECK_LT(4, node->InputCount()); |
| Node* effect_input = node->InputAt(3); |
| Node* control_input = node->InputAt(4); |
| for (int i = num_lanes - 1; i > 0; --i) { |
| rep_nodes[i] = |
| graph()->NewNode(store_op, base, indices[i], rep_inputs[i], |
| effect_input, control_input); |
| effect_input = rep_nodes[i]; |
| } |
| rep_nodes[0]->ReplaceInput(3, rep_nodes[1]); |
| } else { |
| for (int i = 1; i < num_lanes; ++i) { |
| rep_nodes[i] = |
| graph()->NewNode(store_op, base, indices[i], rep_inputs[i]); |
| } |
| } |
| ReplaceNode(node, rep_nodes, num_lanes); |
| } else { |
| DefaultLowering(node); |
| } |
| } |
| |
| void SimdScalarLowering::LowerBinaryOp(Node* node, SimdType input_rep_type, |
| const Operator* op) { |
| DCHECK_EQ(2, node->InputCount()); |
| Node** rep_left = GetReplacementsWithType(node->InputAt(0), input_rep_type); |
| Node** rep_right = GetReplacementsWithType(node->InputAt(1), input_rep_type); |
| int num_lanes = NumLanes(input_rep_type); |
| Node** rep_node = zone()->NewArray<Node*>(num_lanes); |
| for (int i = 0; i < num_lanes; ++i) { |
| rep_node[i] = graph()->NewNode(op, rep_left[i], rep_right[i]); |
| } |
| ReplaceNode(node, rep_node, num_lanes); |
| } |
| |
| void SimdScalarLowering::LowerCompareOp(Node* node, SimdType input_rep_type, |
| const Operator* op, |
| bool invert_inputs) { |
| DCHECK_EQ(2, node->InputCount()); |
| Node** rep_left = GetReplacementsWithType(node->InputAt(0), input_rep_type); |
| Node** rep_right = GetReplacementsWithType(node->InputAt(1), input_rep_type); |
| int num_lanes = NumLanes(input_rep_type); |
| Node** rep_node = zone()->NewArray<Node*>(num_lanes); |
| for (int i = 0; i < num_lanes; ++i) { |
| Node* cmp_result = nullptr; |
| if (invert_inputs) { |
| cmp_result = graph()->NewNode(op, rep_right[i], rep_left[i]); |
| } else { |
| cmp_result = graph()->NewNode(op, rep_left[i], rep_right[i]); |
| } |
| Diamond d_cmp(graph(), common(), |
| graph()->NewNode(machine()->Word32Equal(), cmp_result, |
| jsgraph_->Int32Constant(0))); |
| MachineRepresentation rep = |
| (input_rep_type == SimdType::kFloat32x4) |
| ? MachineRepresentation::kWord32 |
| : MachineTypeFrom(input_rep_type).representation(); |
| rep_node[i] = |
| d_cmp.Phi(rep, jsgraph_->Int32Constant(0), jsgraph_->Int32Constant(-1)); |
| } |
| ReplaceNode(node, rep_node, num_lanes); |
| } |
| |
| Node* SimdScalarLowering::FixUpperBits(Node* input, int32_t shift) { |
| return graph()->NewNode(machine()->Word32Sar(), |
| graph()->NewNode(machine()->Word32Shl(), input, |
| jsgraph_->Int32Constant(shift)), |
| jsgraph_->Int32Constant(shift)); |
| } |
| |
| void SimdScalarLowering::LowerBinaryOpForSmallInt(Node* node, |
| SimdType input_rep_type, |
| const Operator* op) { |
| DCHECK_EQ(2, node->InputCount()); |
| DCHECK(input_rep_type == SimdType::kInt16x8 || |
| input_rep_type == SimdType::kInt8x16); |
| Node** rep_left = GetReplacementsWithType(node->InputAt(0), input_rep_type); |
| Node** rep_right = GetReplacementsWithType(node->InputAt(1), input_rep_type); |
| int num_lanes = NumLanes(input_rep_type); |
| Node** rep_node = zone()->NewArray<Node*>(num_lanes); |
| int32_t shift_val = |
| (input_rep_type == SimdType::kInt16x8) ? kShift16 : kShift8; |
| for (int i = 0; i < num_lanes; ++i) { |
| rep_node[i] = FixUpperBits(graph()->NewNode(op, rep_left[i], rep_right[i]), |
| shift_val); |
| } |
| ReplaceNode(node, rep_node, num_lanes); |
| } |
| |
| Node* SimdScalarLowering::Mask(Node* input, int32_t mask) { |
| return graph()->NewNode(machine()->Word32And(), input, |
| jsgraph_->Int32Constant(mask)); |
| } |
| |
| void SimdScalarLowering::LowerSaturateBinaryOp(Node* node, |
| SimdType input_rep_type, |
| const Operator* op, |
| bool is_signed) { |
| DCHECK_EQ(2, node->InputCount()); |
| DCHECK(input_rep_type == SimdType::kInt16x8 || |
| input_rep_type == SimdType::kInt8x16); |
| Node** rep_left = GetReplacementsWithType(node->InputAt(0), input_rep_type); |
| Node** rep_right = GetReplacementsWithType(node->InputAt(1), input_rep_type); |
| int32_t min = 0; |
| int32_t max = 0; |
| int32_t mask = 0; |
| int32_t shift_val = 0; |
| MachineRepresentation phi_rep; |
| if (input_rep_type == SimdType::kInt16x8) { |
| if (is_signed) { |
| min = std::numeric_limits<int16_t>::min(); |
| max = std::numeric_limits<int16_t>::max(); |
| } else { |
| min = std::numeric_limits<uint16_t>::min(); |
| max = std::numeric_limits<uint16_t>::max(); |
| } |
| mask = kMask16; |
| shift_val = kShift16; |
| phi_rep = MachineRepresentation::kWord16; |
| } else { |
| if (is_signed) { |
| min = std::numeric_limits<int8_t>::min(); |
| max = std::numeric_limits<int8_t>::max(); |
| } else { |
| min = std::numeric_limits<uint8_t>::min(); |
| max = std::numeric_limits<uint8_t>::max(); |
| } |
| mask = kMask8; |
| shift_val = kShift8; |
| phi_rep = MachineRepresentation::kWord8; |
| } |
| int num_lanes = NumLanes(input_rep_type); |
| Node** rep_node = zone()->NewArray<Node*>(num_lanes); |
| for (int i = 0; i < num_lanes; ++i) { |
| Node* op_result = nullptr; |
| Node* left = is_signed ? rep_left[i] : Mask(rep_left[i], mask); |
| Node* right = is_signed ? rep_right[i] : Mask(rep_right[i], mask); |
| op_result = graph()->NewNode(op, left, right); |
| Diamond d_min(graph(), common(), |
| graph()->NewNode(machine()->Int32LessThan(), op_result, |
| jsgraph_->Int32Constant(min))); |
| rep_node[i] = d_min.Phi(phi_rep, jsgraph_->Int32Constant(min), op_result); |
| Diamond d_max(graph(), common(), |
| graph()->NewNode(machine()->Int32LessThan(), |
| jsgraph_->Int32Constant(max), rep_node[i])); |
| rep_node[i] = d_max.Phi(phi_rep, jsgraph_->Int32Constant(max), rep_node[i]); |
| rep_node[i] = |
| is_signed ? rep_node[i] : FixUpperBits(rep_node[i], shift_val); |
| } |
| ReplaceNode(node, rep_node, num_lanes); |
| } |
| |
| void SimdScalarLowering::LowerUnaryOp(Node* node, SimdType input_rep_type, |
| const Operator* op) { |
| DCHECK_EQ(1, node->InputCount()); |
| Node** rep = GetReplacementsWithType(node->InputAt(0), input_rep_type); |
| int num_lanes = NumLanes(input_rep_type); |
| Node** rep_node = zone()->NewArray<Node*>(num_lanes); |
| for (int i = 0; i < num_lanes; ++i) { |
| rep_node[i] = graph()->NewNode(op, rep[i]); |
| } |
| ReplaceNode(node, rep_node, num_lanes); |
| } |
| |
| void SimdScalarLowering::LowerIntMinMax(Node* node, const Operator* op, |
| bool is_max, SimdType type) { |
| DCHECK_EQ(2, node->InputCount()); |
| Node** rep_left = GetReplacementsWithType(node->InputAt(0), type); |
| Node** rep_right = GetReplacementsWithType(node->InputAt(1), type); |
| int num_lanes = NumLanes(type); |
| Node** rep_node = zone()->NewArray<Node*>(num_lanes); |
| MachineRepresentation rep = MachineRepresentation::kNone; |
| if (type == SimdType::kInt32x4) { |
| rep = MachineRepresentation::kWord32; |
| } else if (type == SimdType::kInt16x8) { |
| rep = MachineRepresentation::kWord16; |
| } else if (type == SimdType::kInt8x16) { |
| rep = MachineRepresentation::kWord8; |
| } else { |
| UNREACHABLE(); |
| } |
| for (int i = 0; i < num_lanes; ++i) { |
| Diamond d(graph(), common(), |
| graph()->NewNode(op, rep_left[i], rep_right[i])); |
| if (is_max) { |
| rep_node[i] = d.Phi(rep, rep_right[i], rep_left[i]); |
| } else { |
| rep_node[i] = d.Phi(rep, rep_left[i], rep_right[i]); |
| } |
| } |
| ReplaceNode(node, rep_node, num_lanes); |
| } |
| |
| Node* SimdScalarLowering::BuildF64Trunc(Node* input) { |
| if (machine()->Float64RoundTruncate().IsSupported()) { |
| return graph()->NewNode(machine()->Float64RoundTruncate().op(), input); |
| } else { |
| ExternalReference ref = |
| ExternalReference::wasm_f64_trunc(jsgraph_->isolate()); |
| Node* stack_slot = |
| graph()->NewNode(machine()->StackSlot(MachineRepresentation::kFloat64)); |
| const Operator* store_op = machine()->Store( |
| StoreRepresentation(MachineRepresentation::kFloat64, kNoWriteBarrier)); |
| Node* effect = |
| graph()->NewNode(store_op, stack_slot, jsgraph_->Int32Constant(0), |
| input, graph()->start(), graph()->start()); |
| Node* function = graph()->NewNode(common()->ExternalConstant(ref)); |
| Node** args = zone()->NewArray<Node*>(4); |
| args[0] = function; |
| args[1] = stack_slot; |
| args[2] = effect; |
| args[3] = graph()->start(); |
| Signature<MachineType>::Builder sig_builder(zone(), 0, 1); |
| sig_builder.AddParam(MachineType::Pointer()); |
| CallDescriptor* desc = |
| Linkage::GetSimplifiedCDescriptor(zone(), sig_builder.Build()); |
| Node* call = graph()->NewNode(common()->Call(desc), 4, args); |
| return graph()->NewNode(machine()->Load(LoadRepresentation::Float64()), |
| stack_slot, jsgraph_->Int32Constant(0), call, |
| graph()->start()); |
| } |
| } |
| |
| void SimdScalarLowering::LowerConvertFromFloat(Node* node, bool is_signed) { |
| DCHECK_EQ(1, node->InputCount()); |
| Node** rep = GetReplacementsWithType(node->InputAt(0), SimdType::kFloat32x4); |
| Node* rep_node[kNumLanes32]; |
| Node* double_zero = graph()->NewNode(common()->Float64Constant(0.0)); |
| Node* min = graph()->NewNode( |
| common()->Float64Constant(static_cast<double>(is_signed ? kMinInt : 0))); |
| Node* max = graph()->NewNode(common()->Float64Constant( |
| static_cast<double>(is_signed ? kMaxInt : 0xFFFFFFFFu))); |
| for (int i = 0; i < kNumLanes32; ++i) { |
| Node* double_rep = |
| graph()->NewNode(machine()->ChangeFloat32ToFloat64(), rep[i]); |
| Diamond nan_d(graph(), common(), graph()->NewNode(machine()->Float64Equal(), |
| double_rep, double_rep)); |
| Node* temp = |
| nan_d.Phi(MachineRepresentation::kFloat64, double_rep, double_zero); |
| Diamond min_d(graph(), common(), |
| graph()->NewNode(machine()->Float64LessThan(), temp, min)); |
| temp = min_d.Phi(MachineRepresentation::kFloat64, min, temp); |
| Diamond max_d(graph(), common(), |
| graph()->NewNode(machine()->Float64LessThan(), max, temp)); |
| temp = max_d.Phi(MachineRepresentation::kFloat64, max, temp); |
| Node* trunc = BuildF64Trunc(temp); |
| if (is_signed) { |
| rep_node[i] = graph()->NewNode(machine()->ChangeFloat64ToInt32(), trunc); |
| } else { |
| rep_node[i] = |
| graph()->NewNode(machine()->TruncateFloat64ToUint32(), trunc); |
| } |
| } |
| ReplaceNode(node, rep_node, kNumLanes32); |
| } |
| |
| void SimdScalarLowering::LowerShiftOp(Node* node, SimdType type) { |
| DCHECK_EQ(1, node->InputCount()); |
| int32_t shift_amount = OpParameter<int32_t>(node); |
| Node* shift_node = graph()->NewNode(common()->Int32Constant(shift_amount)); |
| Node** rep = GetReplacementsWithType(node->InputAt(0), type); |
| int num_lanes = NumLanes(type); |
| Node** rep_node = zone()->NewArray<Node*>(num_lanes); |
| for (int i = 0; i < num_lanes; ++i) { |
| rep_node[i] = rep[i]; |
| switch (node->opcode()) { |
| case IrOpcode::kI8x16ShrU: |
| rep_node[i] = Mask(rep_node[i], kMask8); |
| rep_node[i] = |
| graph()->NewNode(machine()->Word32Shr(), rep_node[i], shift_node); |
| break; |
| case IrOpcode::kI16x8ShrU: |
| rep_node[i] = Mask(rep_node[i], kMask16); // Fall through. |
| case IrOpcode::kI32x4ShrU: |
| rep_node[i] = |
| graph()->NewNode(machine()->Word32Shr(), rep_node[i], shift_node); |
| break; |
| case IrOpcode::kI32x4Shl: |
| rep_node[i] = |
| graph()->NewNode(machine()->Word32Shl(), rep_node[i], shift_node); |
| break; |
| case IrOpcode::kI16x8Shl: |
| rep_node[i] = |
| graph()->NewNode(machine()->Word32Shl(), rep_node[i], shift_node); |
| rep_node[i] = FixUpperBits(rep_node[i], kShift16); |
| break; |
| case IrOpcode::kI8x16Shl: |
| rep_node[i] = |
| graph()->NewNode(machine()->Word32Shl(), rep_node[i], shift_node); |
| rep_node[i] = FixUpperBits(rep_node[i], kShift8); |
| break; |
| case IrOpcode::kI32x4ShrS: |
| case IrOpcode::kI16x8ShrS: |
| case IrOpcode::kI8x16ShrS: |
| rep_node[i] = |
| graph()->NewNode(machine()->Word32Sar(), rep_node[i], shift_node); |
| break; |
| default: |
| UNREACHABLE(); |
| } |
| } |
| ReplaceNode(node, rep_node, num_lanes); |
| } |
| |
| void SimdScalarLowering::LowerNotEqual(Node* node, SimdType input_rep_type, |
| const Operator* op) { |
| DCHECK_EQ(2, node->InputCount()); |
| Node** rep_left = GetReplacementsWithType(node->InputAt(0), input_rep_type); |
| Node** rep_right = GetReplacementsWithType(node->InputAt(1), input_rep_type); |
| int num_lanes = NumLanes(input_rep_type); |
| Node** rep_node = zone()->NewArray<Node*>(num_lanes); |
| for (int i = 0; i < num_lanes; ++i) { |
| Diamond d(graph(), common(), |
| graph()->NewNode(op, rep_left[i], rep_right[i])); |
| MachineRepresentation rep = |
| (input_rep_type == SimdType::kFloat32x4) |
| ? MachineRepresentation::kWord32 |
| : MachineTypeFrom(input_rep_type).representation(); |
| rep_node[i] = |
| d.Phi(rep, jsgraph_->Int32Constant(0), jsgraph_->Int32Constant(-1)); |
| } |
| ReplaceNode(node, rep_node, num_lanes); |
| } |
| |
| void SimdScalarLowering::LowerNode(Node* node) { |
| SimdType rep_type = ReplacementType(node); |
| int num_lanes = NumLanes(rep_type); |
| switch (node->opcode()) { |
| case IrOpcode::kStart: { |
| int parameter_count = GetParameterCountAfterLowering(); |
| // Only exchange the node if the parameter count actually changed. |
| if (parameter_count != static_cast<int>(signature()->parameter_count())) { |
| int delta = |
| parameter_count - static_cast<int>(signature()->parameter_count()); |
| int new_output_count = node->op()->ValueOutputCount() + delta; |
| NodeProperties::ChangeOp(node, common()->Start(new_output_count)); |
| } |
| break; |
| } |
| case IrOpcode::kParameter: { |
| DCHECK_EQ(1, node->InputCount()); |
| // Only exchange the node if the parameter count actually changed. We do |
| // not even have to do the default lowering because the the start node, |
| // the only input of a parameter node, only changes if the parameter count |
| // changes. |
| if (GetParameterCountAfterLowering() != |
| static_cast<int>(signature()->parameter_count())) { |
| int old_index = ParameterIndexOf(node->op()); |
| int new_index = |
| GetParameterIndexAfterLoweringSimd128(signature(), old_index); |
| if (old_index == new_index) { |
| NodeProperties::ChangeOp(node, common()->Parameter(new_index)); |
| |
| Node* new_node[kNumLanes32]; |
| for (int i = 0; i < kNumLanes32; ++i) { |
| new_node[i] = nullptr; |
| } |
| new_node[0] = node; |
| if (signature()->GetParam(old_index) == |
| MachineRepresentation::kSimd128) { |
| for (int i = 1; i < kNumLanes32; ++i) { |
| new_node[i] = graph()->NewNode(common()->Parameter(new_index + i), |
| graph()->start()); |
| } |
| } |
| ReplaceNode(node, new_node, kNumLanes32); |
| } |
| } |
| break; |
| } |
| case IrOpcode::kLoad: { |
| MachineRepresentation rep = |
| LoadRepresentationOf(node->op()).representation(); |
| const Operator* load_op; |
| load_op = machine()->Load(MachineTypeFrom(rep_type)); |
| LowerLoadOp(rep, node, load_op, rep_type); |
| break; |
| } |
| case IrOpcode::kUnalignedLoad: { |
| MachineRepresentation rep = |
| UnalignedLoadRepresentationOf(node->op()).representation(); |
| const Operator* load_op; |
| load_op = machine()->UnalignedLoad(MachineTypeFrom(rep_type)); |
| LowerLoadOp(rep, node, load_op, rep_type); |
| break; |
| } |
| case IrOpcode::kStore: { |
| MachineRepresentation rep = |
| StoreRepresentationOf(node->op()).representation(); |
| WriteBarrierKind write_barrier_kind = |
| StoreRepresentationOf(node->op()).write_barrier_kind(); |
| const Operator* store_op; |
| store_op = machine()->Store(StoreRepresentation( |
| MachineTypeFrom(rep_type).representation(), write_barrier_kind)); |
| LowerStoreOp(rep, node, store_op, rep_type); |
| break; |
| } |
| case IrOpcode::kUnalignedStore: { |
| MachineRepresentation rep = UnalignedStoreRepresentationOf(node->op()); |
| const Operator* store_op; |
| store_op = |
| machine()->UnalignedStore(MachineTypeFrom(rep_type).representation()); |
| LowerStoreOp(rep, node, store_op, rep_type); |
| break; |
| } |
| case IrOpcode::kReturn: { |
| DefaultLowering(node); |
| int new_return_count = GetReturnCountAfterLoweringSimd128(signature()); |
| if (static_cast<int>(signature()->return_count()) != new_return_count) { |
| NodeProperties::ChangeOp(node, common()->Return(new_return_count)); |
| } |
| break; |
| } |
| case IrOpcode::kCall: { |
| // TODO(turbofan): Make wasm code const-correct wrt. CallDescriptor. |
| CallDescriptor* descriptor = |
| const_cast<CallDescriptor*>(CallDescriptorOf(node->op())); |
| if (DefaultLowering(node) || |
| (descriptor->ReturnCount() == 1 && |
| descriptor->GetReturnType(0) == MachineType::Simd128())) { |
| // We have to adjust the call descriptor. |
| const Operator* op = |
| common()->Call(GetI32WasmCallDescriptorForSimd(zone(), descriptor)); |
| NodeProperties::ChangeOp(node, op); |
| } |
| if (descriptor->ReturnCount() == 1 && |
| descriptor->GetReturnType(0) == MachineType::Simd128()) { |
| // We access the additional return values through projections. |
| Node* rep_node[kNumLanes32]; |
| for (int i = 0; i < kNumLanes32; ++i) { |
| rep_node[i] = |
| graph()->NewNode(common()->Projection(i), node, graph()->start()); |
| } |
| ReplaceNode(node, rep_node, kNumLanes32); |
| } |
| break; |
| } |
| case IrOpcode::kPhi: { |
| MachineRepresentation rep = PhiRepresentationOf(node->op()); |
| if (rep == MachineRepresentation::kSimd128) { |
| // The replacement nodes have already been created, we only have to |
| // replace placeholder nodes. |
| Node** rep_node = GetReplacements(node); |
| for (int i = 0; i < node->op()->ValueInputCount(); ++i) { |
| Node** rep_input = |
| GetReplacementsWithType(node->InputAt(i), rep_type); |
| for (int j = 0; j < num_lanes; j++) { |
| rep_node[j]->ReplaceInput(i, rep_input[j]); |
| } |
| } |
| } else { |
| DefaultLowering(node); |
| } |
| break; |
| } |
| #define I32X4_BINOP_CASE(opcode, instruction) \ |
| case IrOpcode::opcode: { \ |
| LowerBinaryOp(node, rep_type, machine()->instruction()); \ |
| break; \ |
| } |
| I32X4_BINOP_CASE(kI32x4Add, Int32Add) |
| I32X4_BINOP_CASE(kI32x4Sub, Int32Sub) |
| I32X4_BINOP_CASE(kI32x4Mul, Int32Mul) |
| I32X4_BINOP_CASE(kS128And, Word32And) |
| I32X4_BINOP_CASE(kS128Or, Word32Or) |
| I32X4_BINOP_CASE(kS128Xor, Word32Xor) |
| #undef I32X4_BINOP_CASE |
| case IrOpcode::kI16x8Add: |
| case IrOpcode::kI8x16Add: { |
| LowerBinaryOpForSmallInt(node, rep_type, machine()->Int32Add()); |
| break; |
| } |
| case IrOpcode::kI16x8Sub: |
| case IrOpcode::kI8x16Sub: { |
| LowerBinaryOpForSmallInt(node, rep_type, machine()->Int32Sub()); |
| break; |
| } |
| case IrOpcode::kI16x8Mul: |
| case IrOpcode::kI8x16Mul: { |
| LowerBinaryOpForSmallInt(node, rep_type, machine()->Int32Mul()); |
| break; |
| } |
| case IrOpcode::kI16x8AddSaturateS: |
| case IrOpcode::kI8x16AddSaturateS: { |
| LowerSaturateBinaryOp(node, rep_type, machine()->Int32Add(), true); |
| break; |
| } |
| case IrOpcode::kI16x8SubSaturateS: |
| case IrOpcode::kI8x16SubSaturateS: { |
| LowerSaturateBinaryOp(node, rep_type, machine()->Int32Sub(), true); |
| break; |
| } |
| case IrOpcode::kI16x8AddSaturateU: |
| case IrOpcode::kI8x16AddSaturateU: { |
| LowerSaturateBinaryOp(node, rep_type, machine()->Int32Add(), false); |
| break; |
| } |
| case IrOpcode::kI16x8SubSaturateU: |
| case IrOpcode::kI8x16SubSaturateU: { |
| LowerSaturateBinaryOp(node, rep_type, machine()->Int32Sub(), false); |
| break; |
| } |
| case IrOpcode::kI32x4MaxS: |
| case IrOpcode::kI16x8MaxS: |
| case IrOpcode::kI8x16MaxS: { |
| LowerIntMinMax(node, machine()->Int32LessThan(), true, rep_type); |
| break; |
| } |
| case IrOpcode::kI32x4MinS: |
| case IrOpcode::kI16x8MinS: |
| case IrOpcode::kI8x16MinS: { |
| LowerIntMinMax(node, machine()->Int32LessThan(), false, rep_type); |
| break; |
| } |
| case IrOpcode::kI32x4MaxU: |
| case IrOpcode::kI16x8MaxU: |
| case IrOpcode::kI8x16MaxU: { |
| LowerIntMinMax(node, machine()->Uint32LessThan(), true, rep_type); |
| break; |
| } |
| case IrOpcode::kI32x4MinU: |
| case IrOpcode::kI16x8MinU: |
| case IrOpcode::kI8x16MinU: { |
| LowerIntMinMax(node, machine()->Uint32LessThan(), false, rep_type); |
| break; |
| } |
| case IrOpcode::kI32x4Neg: |
| case IrOpcode::kI16x8Neg: |
| case IrOpcode::kI8x16Neg: { |
| DCHECK_EQ(1, node->InputCount()); |
| Node** rep = GetReplacementsWithType(node->InputAt(0), rep_type); |
| int num_lanes = NumLanes(rep_type); |
| Node** rep_node = zone()->NewArray<Node*>(num_lanes); |
| Node* zero = graph()->NewNode(common()->Int32Constant(0)); |
| for (int i = 0; i < num_lanes; ++i) { |
| rep_node[i] = graph()->NewNode(machine()->Int32Sub(), zero, rep[i]); |
| if (node->opcode() == IrOpcode::kI16x8Neg) { |
| rep_node[i] = FixUpperBits(rep_node[i], kShift16); |
| } else if (node->opcode() == IrOpcode::kI8x16Neg) { |
| rep_node[i] = FixUpperBits(rep_node[i], kShift8); |
| } |
| } |
| ReplaceNode(node, rep_node, num_lanes); |
| break; |
| } |
| case IrOpcode::kS128Not: { |
| DCHECK_EQ(1, node->InputCount()); |
| Node** rep = GetReplacementsWithType(node->InputAt(0), rep_type); |
| Node* rep_node[kNumLanes32]; |
| Node* mask = graph()->NewNode(common()->Int32Constant(0xFFFFFFFF)); |
| for (int i = 0; i < kNumLanes32; ++i) { |
| rep_node[i] = graph()->NewNode(machine()->Word32Xor(), rep[i], mask); |
| } |
| ReplaceNode(node, rep_node, kNumLanes32); |
| break; |
| } |
| case IrOpcode::kI32x4SConvertF32x4: { |
| LowerConvertFromFloat(node, true); |
| break; |
| } |
| case IrOpcode::kI32x4UConvertF32x4: { |
| LowerConvertFromFloat(node, false); |
| break; |
| } |
| case IrOpcode::kI32x4Shl: |
| case IrOpcode::kI16x8Shl: |
| case IrOpcode::kI8x16Shl: |
| case IrOpcode::kI32x4ShrS: |
| case IrOpcode::kI16x8ShrS: |
| case IrOpcode::kI8x16ShrS: |
| case IrOpcode::kI32x4ShrU: |
| case IrOpcode::kI16x8ShrU: |
| case IrOpcode::kI8x16ShrU: { |
| LowerShiftOp(node, rep_type); |
| break; |
| } |
| #define F32X4_BINOP_CASE(name) \ |
| case IrOpcode::kF32x4##name: { \ |
| LowerBinaryOp(node, rep_type, machine()->Float32##name()); \ |
| break; \ |
| } |
| F32X4_BINOP_CASE(Add) |
| F32X4_BINOP_CASE(Sub) |
| F32X4_BINOP_CASE(Mul) |
| F32X4_BINOP_CASE(Min) |
| F32X4_BINOP_CASE(Max) |
| #undef F32X4_BINOP_CASE |
| #define F32X4_UNOP_CASE(name) \ |
| case IrOpcode::kF32x4##name: { \ |
| LowerUnaryOp(node, rep_type, machine()->Float32##name()); \ |
| break; \ |
| } |
| F32X4_UNOP_CASE(Abs) |
| F32X4_UNOP_CASE(Neg) |
| #undef F32x4_UNOP_CASE |
| case IrOpcode::kF32x4SConvertI32x4: { |
| LowerUnaryOp(node, SimdType::kInt32x4, machine()->RoundInt32ToFloat32()); |
| break; |
| } |
| case IrOpcode::kF32x4UConvertI32x4: { |
| LowerUnaryOp(node, SimdType::kInt32x4, machine()->RoundUint32ToFloat32()); |
| break; |
| } |
| case IrOpcode::kI32x4Splat: |
| case IrOpcode::kF32x4Splat: |
| case IrOpcode::kI16x8Splat: |
| case IrOpcode::kI8x16Splat: { |
| Node** rep_node = zone()->NewArray<Node*>(num_lanes); |
| for (int i = 0; i < num_lanes; ++i) { |
| if (HasReplacement(0, node->InputAt(0))) { |
| rep_node[i] = GetReplacements(node->InputAt(0))[0]; |
| } else { |
| rep_node[i] = node->InputAt(0); |
| } |
| } |
| ReplaceNode(node, rep_node, num_lanes); |
| break; |
| } |
| case IrOpcode::kI32x4ExtractLane: |
| case IrOpcode::kF32x4ExtractLane: |
| case IrOpcode::kI16x8ExtractLane: |
| case IrOpcode::kI8x16ExtractLane: { |
| int32_t lane = OpParameter<int32_t>(node); |
| Node** rep_node = zone()->NewArray<Node*>(num_lanes); |
| rep_node[0] = GetReplacementsWithType(node->InputAt(0), rep_type)[lane]; |
| for (int i = 1; i < num_lanes; ++i) { |
| rep_node[i] = nullptr; |
| } |
| ReplaceNode(node, rep_node, num_lanes); |
| break; |
| } |
| case IrOpcode::kI32x4ReplaceLane: |
| case IrOpcode::kF32x4ReplaceLane: |
| case IrOpcode::kI16x8ReplaceLane: |
| case IrOpcode::kI8x16ReplaceLane: { |
| DCHECK_EQ(2, node->InputCount()); |
| Node* repNode = node->InputAt(1); |
| int32_t lane = OpParameter<int32_t>(node); |
| Node** rep_node = GetReplacementsWithType(node->InputAt(0), rep_type); |
| if (HasReplacement(0, repNode)) { |
| rep_node[lane] = GetReplacements(repNode)[0]; |
| } else { |
| rep_node[lane] = repNode; |
| } |
| ReplaceNode(node, rep_node, num_lanes); |
| break; |
| } |
| #define COMPARISON_CASE(type, simd_op, lowering_op, invert) \ |
| case IrOpcode::simd_op: { \ |
| LowerCompareOp(node, SimdType::k##type, machine()->lowering_op(), invert); \ |
| break; \ |
| } |
| COMPARISON_CASE(Float32x4, kF32x4Eq, Float32Equal, false) |
| COMPARISON_CASE(Float32x4, kF32x4Lt, Float32LessThan, false) |
| COMPARISON_CASE(Float32x4, kF32x4Le, Float32LessThanOrEqual, false) |
| COMPARISON_CASE(Float32x4, kF32x4Gt, Float32LessThan, true) |
| COMPARISON_CASE(Float32x4, kF32x4Ge, Float32LessThanOrEqual, true) |
| COMPARISON_CASE(Int32x4, kI32x4Eq, Word32Equal, false) |
| COMPARISON_CASE(Int32x4, kI32x4LtS, Int32LessThan, false) |
| COMPARISON_CASE(Int32x4, kI32x4LeS, Int32LessThanOrEqual, false) |
| COMPARISON_CASE(Int32x4, kI32x4GtS, Int32LessThan, true) |
| COMPARISON_CASE(Int32x4, kI32x4GeS, Int32LessThanOrEqual, true) |
| COMPARISON_CASE(Int32x4, kI32x4LtU, Uint32LessThan, false) |
| COMPARISON_CASE(Int32x4, kI32x4LeU, Uint32LessThanOrEqual, false) |
| COMPARISON_CASE(Int32x4, kI32x4GtU, Uint32LessThan, true) |
| COMPARISON_CASE(Int32x4, kI32x4GeU, Uint32LessThanOrEqual, true) |
| COMPARISON_CASE(Int16x8, kI16x8Eq, Word32Equal, false) |
| COMPARISON_CASE(Int16x8, kI16x8LtS, Int32LessThan, false) |
| COMPARISON_CASE(Int16x8, kI16x8LeS, Int32LessThanOrEqual, false) |
| COMPARISON_CASE(Int16x8, kI16x8GtS, Int32LessThan, true) |
| COMPARISON_CASE(Int16x8, kI16x8GeS, Int32LessThanOrEqual, true) |
| COMPARISON_CASE(Int16x8, kI16x8LtU, Uint32LessThan, false) |
| COMPARISON_CASE(Int16x8, kI16x8LeU, Uint32LessThanOrEqual, false) |
| COMPARISON_CASE(Int16x8, kI16x8GtU, Uint32LessThan, true) |
| COMPARISON_CASE(Int16x8, kI16x8GeU, Uint32LessThanOrEqual, true) |
| COMPARISON_CASE(Int8x16, kI8x16Eq, Word32Equal, false) |
| COMPARISON_CASE(Int8x16, kI8x16LtS, Int32LessThan, false) |
| COMPARISON_CASE(Int8x16, kI8x16LeS, Int32LessThanOrEqual, false) |
| COMPARISON_CASE(Int8x16, kI8x16GtS, Int32LessThan, true) |
| COMPARISON_CASE(Int8x16, kI8x16GeS, Int32LessThanOrEqual, true) |
| COMPARISON_CASE(Int8x16, kI8x16LtU, Uint32LessThan, false) |
| COMPARISON_CASE(Int8x16, kI8x16LeU, Uint32LessThanOrEqual, false) |
| COMPARISON_CASE(Int8x16, kI8x16GtU, Uint32LessThan, true) |
| COMPARISON_CASE(Int8x16, kI8x16GeU, Uint32LessThanOrEqual, true) |
| #undef COMPARISON_CASE |
| case IrOpcode::kF32x4Ne: { |
| LowerNotEqual(node, SimdType::kFloat32x4, machine()->Float32Equal()); |
| break; |
| } |
| case IrOpcode::kI32x4Ne: { |
| LowerNotEqual(node, SimdType::kInt32x4, machine()->Word32Equal()); |
| break; |
| } |
| case IrOpcode::kI16x8Ne: { |
| LowerNotEqual(node, SimdType::kInt16x8, machine()->Word32Equal()); |
| break; |
| } |
| case IrOpcode::kI8x16Ne: { |
| LowerNotEqual(node, SimdType::kInt8x16, machine()->Word32Equal()); |
| break; |
| } |
| case IrOpcode::kS128Select: { |
| DCHECK_EQ(3, node->InputCount()); |
| DCHECK(ReplacementType(node->InputAt(0)) == SimdType::kInt32x4 || |
| ReplacementType(node->InputAt(0)) == SimdType::kInt16x8 || |
| ReplacementType(node->InputAt(0)) == SimdType::kInt8x16); |
| Node** boolean_input = GetReplacements(node->InputAt(0)); |
| Node** rep_left = GetReplacementsWithType(node->InputAt(1), rep_type); |
| Node** rep_right = GetReplacementsWithType(node->InputAt(2), rep_type); |
| Node** rep_node = zone()->NewArray<Node*>(num_lanes); |
| for (int i = 0; i < num_lanes; ++i) { |
| Diamond d(graph(), common(), |
| graph()->NewNode(machine()->Word32Equal(), boolean_input[i], |
| jsgraph_->Int32Constant(0))); |
| rep_node[i] = d.Phi(MachineTypeFrom(rep_type).representation(), |
| rep_right[1], rep_left[0]); |
| } |
| ReplaceNode(node, rep_node, num_lanes); |
| break; |
| } |
| default: { DefaultLowering(node); } |
| } |
| } |
| |
| bool SimdScalarLowering::DefaultLowering(Node* node) { |
| bool something_changed = false; |
| for (int i = NodeProperties::PastValueIndex(node) - 1; i >= 0; i--) { |
| Node* input = node->InputAt(i); |
| if (HasReplacement(0, input)) { |
| something_changed = true; |
| node->ReplaceInput(i, GetReplacements(input)[0]); |
| } |
| if (HasReplacement(1, input)) { |
| something_changed = true; |
| for (int j = 1; j < ReplacementCount(input); ++j) { |
| node->InsertInput(zone(), i + j, GetReplacements(input)[j]); |
| } |
| } |
| } |
| return something_changed; |
| } |
| |
| void SimdScalarLowering::ReplaceNode(Node* old, Node** new_nodes, int count) { |
| replacements_[old->id()].node = zone()->NewArray<Node*>(count); |
| for (int i = 0; i < count; ++i) { |
| replacements_[old->id()].node[i] = new_nodes[i]; |
| } |
| replacements_[old->id()].num_replacements = count; |
| } |
| |
| bool SimdScalarLowering::HasReplacement(size_t index, Node* node) { |
| return replacements_[node->id()].node != nullptr && |
| replacements_[node->id()].node[index] != nullptr; |
| } |
| |
| SimdScalarLowering::SimdType SimdScalarLowering::ReplacementType(Node* node) { |
| return replacements_[node->id()].type; |
| } |
| |
| Node** SimdScalarLowering::GetReplacements(Node* node) { |
| Node** result = replacements_[node->id()].node; |
| DCHECK(result); |
| return result; |
| } |
| |
| int SimdScalarLowering::ReplacementCount(Node* node) { |
| return replacements_[node->id()].num_replacements; |
| } |
| |
| void SimdScalarLowering::Int32ToFloat32(Node** replacements, Node** result) { |
| for (int i = 0; i < kNumLanes32; ++i) { |
| if (replacements[i] != nullptr) { |
| result[i] = |
| graph()->NewNode(machine()->BitcastInt32ToFloat32(), replacements[i]); |
| } else { |
| result[i] = nullptr; |
| } |
| } |
| } |
| |
| void SimdScalarLowering::Float32ToInt32(Node** replacements, Node** result) { |
| for (int i = 0; i < kNumLanes32; ++i) { |
| if (replacements[i] != nullptr) { |
| result[i] = |
| graph()->NewNode(machine()->BitcastFloat32ToInt32(), replacements[i]); |
| } else { |
| result[i] = nullptr; |
| } |
| } |
| } |
| |
| Node** SimdScalarLowering::GetReplacementsWithType(Node* node, SimdType type) { |
| Node** replacements = GetReplacements(node); |
| if (ReplacementType(node) == type) { |
| return GetReplacements(node); |
| } |
| int num_lanes = NumLanes(type); |
| Node** result = zone()->NewArray<Node*>(num_lanes); |
| if (type == SimdType::kInt32x4) { |
| if (ReplacementType(node) == SimdType::kFloat32x4) { |
| Float32ToInt32(replacements, result); |
| } else if (ReplacementType(node) == SimdType::kInt16x8) { |
| UNIMPLEMENTED(); |
| } else { |
| UNREACHABLE(); |
| } |
| } else if (type == SimdType::kFloat32x4) { |
| if (ReplacementType(node) == SimdType::kInt32x4) { |
| Int32ToFloat32(replacements, result); |
| } else if (ReplacementType(node) == SimdType::kInt16x8) { |
| UNIMPLEMENTED(); |
| } else { |
| UNREACHABLE(); |
| } |
| } else if (type == SimdType::kInt16x8) { |
| if (ReplacementType(node) == SimdType::kInt32x4 || |
| ReplacementType(node) == SimdType::kFloat32x4) { |
| UNIMPLEMENTED(); |
| } else { |
| UNREACHABLE(); |
| } |
| } else { |
| UNREACHABLE(); |
| } |
| return result; |
| } |
| |
| void SimdScalarLowering::PreparePhiReplacement(Node* phi) { |
| MachineRepresentation rep = PhiRepresentationOf(phi->op()); |
| if (rep == MachineRepresentation::kSimd128) { |
| // We have to create the replacements for a phi node before we actually |
| // lower the phi to break potential cycles in the graph. The replacements of |
| // input nodes do not exist yet, so we use a placeholder node to pass the |
| // graph verifier. |
| int value_count = phi->op()->ValueInputCount(); |
| SimdType type = ReplacementType(phi); |
| int num_lanes = NumLanes(type); |
| Node*** inputs_rep = zone()->NewArray<Node**>(num_lanes); |
| for (int i = 0; i < num_lanes; ++i) { |
| inputs_rep[i] = zone()->NewArray<Node*>(value_count + 1); |
| inputs_rep[i][value_count] = NodeProperties::GetControlInput(phi, 0); |
| } |
| for (int i = 0; i < value_count; ++i) { |
| for (int j = 0; j < num_lanes; ++j) { |
| inputs_rep[j][i] = placeholder_; |
| } |
| } |
| Node** rep_nodes = zone()->NewArray<Node*>(num_lanes); |
| for (int i = 0; i < num_lanes; ++i) { |
| rep_nodes[i] = graph()->NewNode( |
| common()->Phi(MachineTypeFrom(type).representation(), value_count), |
| value_count + 1, inputs_rep[i], false); |
| } |
| ReplaceNode(phi, rep_nodes, num_lanes); |
| } |
| } |
| } // namespace compiler |
| } // namespace internal |
| } // namespace v8 |
