17d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// Copyright 2014 the V8 project authors. All rights reserved. 27d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// Use of this source code is governed by a BSD-style license that can be 37d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// found in the LICENSE file. 47d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 5c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org#include "src/compiler/access-builder.h" 67d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org#include "src/compiler/graph-inl.h" 7a2c0c1516848536a514b3178d2c040b7df0ceb5bmachenbach@chromium.org#include "src/compiler/js-builtin-reducer.h" 87d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org#include "src/compiler/js-typed-lowering.h" 97d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org#include "src/compiler/node-aux-data-inl.h" 107d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org#include "src/compiler/node-properties-inl.h" 117d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org#include "src/types.h" 127d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 137d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgnamespace v8 { 147d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgnamespace internal { 157d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgnamespace compiler { 167d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 177d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// TODO(turbofan): js-typed-lowering improvements possible 187d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// - immediately put in type bounds for all new nodes 197d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// - relax effects from generic but not-side-effecting operations 207d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// - relax effects for ToNumber(mixed) 217d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 227d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 237d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// Relax the effects of {node} by immediately replacing effect uses of {node} 247d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// with the effect input to {node}. 257d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// TODO(turbofan): replace the effect input to {node} with {graph->start()}. 267d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// TODO(titzer): move into a GraphEditor? 27e2a8937454723a720c81acc3f9e4162b18999b43machenbach@chromium.orgstatic void RelaxEffects(Node* node) { 28e2a8937454723a720c81acc3f9e4162b18999b43machenbach@chromium.org NodeProperties::ReplaceWithValue(node, node, NULL); 29e2a8937454723a720c81acc3f9e4162b18999b43machenbach@chromium.org} 307d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 317d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 322c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.orgJSTypedLowering::~JSTypedLowering() {} 332c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org 342c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org 357d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgReduction JSTypedLowering::ReplaceEagerly(Node* old, Node* node) { 36e2a8937454723a720c81acc3f9e4162b18999b43machenbach@chromium.org NodeProperties::ReplaceWithValue(old, node, node); 372c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org return Changed(node); 387d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org} 397d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 407d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 417d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// A helper class to simplify the process of reducing a single binop node with a 427d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// JSOperator. This class manages the rewriting of context, control, and effect 437d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// dependencies during lowering of a binop and contains numerous helper 447d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org// functions for matching the types of inputs to an operation. 457d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgclass JSBinopReduction { 467d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org public: 477d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org JSBinopReduction(JSTypedLowering* lowering, Node* node) 487d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org : lowering_(lowering), 497d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node_(node), 507d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org left_type_(NodeProperties::GetBounds(node->InputAt(0)).upper), 517d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org right_type_(NodeProperties::GetBounds(node->InputAt(1)).upper) {} 527d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 537d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org void ConvertInputsToNumber() { 547d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node_->ReplaceInput(0, ConvertToNumber(left())); 557d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node_->ReplaceInput(1, ConvertToNumber(right())); 567d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 577d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 587d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org void ConvertInputsToInt32(bool left_signed, bool right_signed) { 597d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node_->ReplaceInput(0, ConvertToI32(left_signed, left())); 607d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node_->ReplaceInput(1, ConvertToI32(right_signed, right())); 617d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 627d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 637d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org void ConvertInputsToString() { 647d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node_->ReplaceInput(0, ConvertToString(left())); 657d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node_->ReplaceInput(1, ConvertToString(right())); 667d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 677d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 687d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Convert inputs for bitwise shift operation (ES5 spec 11.7). 697d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org void ConvertInputsForShift(bool left_signed) { 707d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node_->ReplaceInput(0, ConvertToI32(left_signed, left())); 717d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* rnum = ConvertToI32(false, right()); 727d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node_->ReplaceInput(1, graph()->NewNode(machine()->Word32And(), rnum, 737d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org jsgraph()->Int32Constant(0x1F))); 747d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 757d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 767d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org void SwapInputs() { 777d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* l = left(); 787d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* r = right(); 797d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node_->ReplaceInput(0, r); 807d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node_->ReplaceInput(1, l); 817d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org std::swap(left_type_, right_type_); 827d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 837d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 847d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Remove all effect and control inputs and outputs to this node and change 857d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // to the pure operator {op}, possibly inserting a boolean inversion. 862c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org Reduction ChangeToPureOperator(const Operator* op, bool invert = false) { 87e3c177a423baa3c30225c4e422b6f6c76d38b951machenbach@chromium.org DCHECK_EQ(0, OperatorProperties::GetEffectInputCount(op)); 88e3c177a423baa3c30225c4e422b6f6c76d38b951machenbach@chromium.org DCHECK_EQ(false, OperatorProperties::HasContextInput(op)); 89e3c177a423baa3c30225c4e422b6f6c76d38b951machenbach@chromium.org DCHECK_EQ(0, OperatorProperties::GetControlInputCount(op)); 90e3c177a423baa3c30225c4e422b6f6c76d38b951machenbach@chromium.org DCHECK_EQ(2, OperatorProperties::GetValueInputCount(op)); 917d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 927d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Remove the effects from the node, if any, and update its effect usages. 937d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (OperatorProperties::GetEffectInputCount(node_->op()) > 0) { 947d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org RelaxEffects(node_); 957d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 967d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Remove the inputs corresponding to context, effect, and control. 977d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org NodeProperties::RemoveNonValueInputs(node_); 987d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Finally, update the operator to the new one. 997d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node_->set_op(op); 1007d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 1017d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (invert) { 1027d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Insert an boolean not to invert the value. 1037d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* value = graph()->NewNode(simplified()->BooleanNot(), node_); 1047d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node_->ReplaceUses(value); 1057d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Note: ReplaceUses() smashes all uses, so smash it back here. 1067d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org value->ReplaceInput(0, node_); 1077d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return lowering_->ReplaceWith(value); 1087d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 1097d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return lowering_->Changed(node_); 1107d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 1117d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 1127d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org bool OneInputIs(Type* t) { return left_type_->Is(t) || right_type_->Is(t); } 1137d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 1147d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org bool BothInputsAre(Type* t) { 1157d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return left_type_->Is(t) && right_type_->Is(t); 1167d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 1177d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 1187d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org bool OneInputCannotBe(Type* t) { 1197d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return !left_type_->Maybe(t) || !right_type_->Maybe(t); 1207d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 1217d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 1227d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org bool NeitherInputCanBe(Type* t) { 1237d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return !left_type_->Maybe(t) && !right_type_->Maybe(t); 1247d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 1257d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 1267d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* effect() { return NodeProperties::GetEffectInput(node_); } 1277d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* control() { return NodeProperties::GetControlInput(node_); } 1287d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* context() { return NodeProperties::GetContextInput(node_); } 1297d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* left() { return NodeProperties::GetValueInput(node_, 0); } 1307d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* right() { return NodeProperties::GetValueInput(node_, 1); } 1317d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Type* left_type() { return left_type_; } 1327d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Type* right_type() { return right_type_; } 1337d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 1347d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org SimplifiedOperatorBuilder* simplified() { return lowering_->simplified(); } 1357d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Graph* graph() { return lowering_->graph(); } 1367d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org JSGraph* jsgraph() { return lowering_->jsgraph(); } 1377d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org JSOperatorBuilder* javascript() { return lowering_->javascript(); } 1387d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org MachineOperatorBuilder* machine() { return lowering_->machine(); } 1397d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 1407d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org private: 1417d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org JSTypedLowering* lowering_; // The containing lowering instance. 1427d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* node_; // The original node. 1437d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Type* left_type_; // Cache of the left input's type. 1447d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Type* right_type_; // Cache of the right input's type. 1457d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 1467d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* ConvertToString(Node* node) { 1477d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Avoid introducing too many eager ToString() operations. 1487d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Reduction reduced = lowering_->ReduceJSToStringInput(node); 1497d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (reduced.Changed()) return reduced.replacement(); 1507d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* n = graph()->NewNode(javascript()->ToString(), node, context(), 1517d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org effect(), control()); 1527d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org update_effect(n); 1537d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return n; 1547d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 1557d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 1567d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* ConvertToNumber(Node* node) { 1577d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Avoid introducing too many eager ToNumber() operations. 1587d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Reduction reduced = lowering_->ReduceJSToNumberInput(node); 1597d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (reduced.Changed()) return reduced.replacement(); 1607d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* n = graph()->NewNode(javascript()->ToNumber(), node, context(), 1617d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org effect(), control()); 1627d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org update_effect(n); 1637d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return n; 1647d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 1657d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 1667d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Try to narrowing a double or number operation to an Int32 operation. 1677d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org bool TryNarrowingToI32(Type* type, Node* node) { 1687d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org switch (node->opcode()) { 1697d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kFloat64Add: 1707d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kNumberAdd: { 1717d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org JSBinopReduction r(lowering_, node); 1727d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.BothInputsAre(Type::Integral32())) { 1737d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node->set_op(lowering_->machine()->Int32Add()); 1747d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // TODO(titzer): narrow bounds instead of overwriting. 1757d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org NodeProperties::SetBounds(node, Bounds(type)); 1767d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return true; 1777d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 1787d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 1797d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kFloat64Sub: 1807d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kNumberSubtract: { 1817d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org JSBinopReduction r(lowering_, node); 1827d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.BothInputsAre(Type::Integral32())) { 1837d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node->set_op(lowering_->machine()->Int32Sub()); 1847d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // TODO(titzer): narrow bounds instead of overwriting. 1857d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org NodeProperties::SetBounds(node, Bounds(type)); 1867d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return true; 1877d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 1887d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 1897d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org default: 1907d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return false; 1917d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 1927d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 1937d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 1947d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* ConvertToI32(bool is_signed, Node* node) { 1957d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Type* type = is_signed ? Type::Signed32() : Type::Unsigned32(); 1967d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (node->OwnedBy(node_)) { 1977d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // If this node {node_} has the only edge to {node}, then try narrowing 1987d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // its operation to an Int32 add or subtract. 1997d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (TryNarrowingToI32(type, node)) return node; 2007d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } else { 2017d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Otherwise, {node} has multiple uses. Leave it as is and let the 2027d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // further lowering passes deal with it, which use a full backwards 2037d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // fixpoint. 2047d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 2057d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 2067d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Avoid introducing too many eager NumberToXXnt32() operations. 2077d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node = ConvertToNumber(node); 2087d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Type* input_type = NodeProperties::GetBounds(node).upper; 2097d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 2107d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input_type->Is(type)) return node; // already in the value range. 2117d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 2122c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org const Operator* op = is_signed ? simplified()->NumberToInt32() 2132c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org : simplified()->NumberToUint32(); 2147d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* n = graph()->NewNode(op, node); 2157d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return n; 2167d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 2177d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 2187d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org void update_effect(Node* effect) { 2197d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org NodeProperties::ReplaceEffectInput(node_, effect); 2207d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 2217d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org}; 2227d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 2237d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 2247d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgReduction JSTypedLowering::ReduceJSAdd(Node* node) { 2257d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org JSBinopReduction r(this, node); 2266313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org if (r.BothInputsAre(Type::Number())) { 2276313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org // JSAdd(x:number, y:number) => NumberAdd(x, y) 2286313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org return r.ChangeToPureOperator(simplified()->NumberAdd()); 22921d700eedcdd6570eff22ece724b63a5eefe78cbmachenbach@chromium.org } 2306313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org Type* maybe_string = Type::Union(Type::String(), Type::Receiver(), zone()); 2316313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org if (r.NeitherInputCanBe(maybe_string)) { 2326313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org // JSAdd(x:-string, y:-string) => NumberAdd(ToNumber(x), ToNumber(y)) 2337d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org r.ConvertInputsToNumber(); 2347d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator(simplified()->NumberAdd()); 2357d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 236d3df75b4472c9d5d4d2615aaea74d2adce4160f8machenbach@chromium.org#if 0 237d3df75b4472c9d5d4d2615aaea74d2adce4160f8machenbach@chromium.org // TODO(turbofan): Lowering of StringAdd is disabled for now because: 238d3df75b4472c9d5d4d2615aaea74d2adce4160f8machenbach@chromium.org // a) The inserted ToString operation screws up valueOf vs. toString order. 239d3df75b4472c9d5d4d2615aaea74d2adce4160f8machenbach@chromium.org // b) Deoptimization at ToString doesn't have corresponding bailout id. 240d3df75b4472c9d5d4d2615aaea74d2adce4160f8machenbach@chromium.org // c) Our current StringAddStub is actually non-pure and requires context. 2416313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org if (r.OneInputIs(Type::String())) { 2426313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org // JSAdd(x:string, y:string) => StringAdd(x, y) 2436313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org // JSAdd(x:string, y) => StringAdd(x, ToString(y)) 2446313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org // JSAdd(x, y:string) => StringAdd(ToString(x), y) 2456313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org r.ConvertInputsToString(); 2466313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org return r.ChangeToPureOperator(simplified()->StringAdd()); 2476313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org } 248d3df75b4472c9d5d4d2615aaea74d2adce4160f8machenbach@chromium.org#endif 2497d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return NoChange(); 2507d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org} 2517d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 2527d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 2532c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.orgReduction JSTypedLowering::ReduceNumberBinop(Node* node, 2542c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org const Operator* numberOp) { 2557d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org JSBinopReduction r(this, node); 2567d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.OneInputIs(Type::Primitive())) { 2577d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // If at least one input is a primitive, then insert appropriate conversions 2587d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // to number and reduce this operator to the given numeric one. 2597d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // TODO(turbofan): make this heuristic configurable for code size. 2607d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org r.ConvertInputsToNumber(); 2617d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator(numberOp); 2627d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 2637d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // TODO(turbofan): relax/remove the effects of this operator in other cases. 2647d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return NoChange(); 2657d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org} 2667d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 2677d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 2687d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgReduction JSTypedLowering::ReduceI32Binop(Node* node, bool left_signed, 2692c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org bool right_signed, 2702c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org const Operator* intOp) { 2717d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org JSBinopReduction r(this, node); 2727d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // TODO(titzer): some Smi bitwise operations don't really require going 2737d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // all the way to int32, which can save tagging/untagging for some operations 2747d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // on some platforms. 2757d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // TODO(turbofan): make this heuristic configurable for code size. 2767d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org r.ConvertInputsToInt32(left_signed, right_signed); 2777d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator(intOp); 2787d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org} 2797d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 2807d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 2817d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgReduction JSTypedLowering::ReduceI32Shift(Node* node, bool left_signed, 2822c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org const Operator* shift_op) { 2837d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org JSBinopReduction r(this, node); 2847d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org r.ConvertInputsForShift(left_signed); 2857d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator(shift_op); 2867d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org} 2877d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 2887d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 2897d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgReduction JSTypedLowering::ReduceJSComparison(Node* node) { 2907d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org JSBinopReduction r(this, node); 2917d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.BothInputsAre(Type::String())) { 2927d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // If both inputs are definitely strings, perform a string comparison. 2932c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org const Operator* stringOp; 2947d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org switch (node->opcode()) { 2957d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSLessThan: 2967d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org stringOp = simplified()->StringLessThan(); 2977d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org break; 2987d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSGreaterThan: 2997d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org stringOp = simplified()->StringLessThan(); 3007d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org r.SwapInputs(); // a > b => b < a 3017d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org break; 3027d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSLessThanOrEqual: 3037d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org stringOp = simplified()->StringLessThanOrEqual(); 3047d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org break; 3057d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSGreaterThanOrEqual: 3067d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org stringOp = simplified()->StringLessThanOrEqual(); 3077d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org r.SwapInputs(); // a >= b => b <= a 3087d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org break; 3097d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org default: 3107d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return NoChange(); 3117d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 3127d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator(stringOp); 313d3df75b4472c9d5d4d2615aaea74d2adce4160f8machenbach@chromium.org } 314d3df75b4472c9d5d4d2615aaea74d2adce4160f8machenbach@chromium.org Type* maybe_string = Type::Union(Type::String(), Type::Receiver(), zone()); 315d3df75b4472c9d5d4d2615aaea74d2adce4160f8machenbach@chromium.org if (r.OneInputCannotBe(maybe_string)) { 3167d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // If one input cannot be a string, then emit a number comparison. 3172c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org const Operator* less_than; 3182c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org const Operator* less_than_or_equal; 3197d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.BothInputsAre(Type::Unsigned32())) { 3207d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org less_than = machine()->Uint32LessThan(); 3217d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org less_than_or_equal = machine()->Uint32LessThanOrEqual(); 3227d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } else if (r.BothInputsAre(Type::Signed32())) { 3237d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org less_than = machine()->Int32LessThan(); 3247d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org less_than_or_equal = machine()->Int32LessThanOrEqual(); 3257d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } else { 3267d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // TODO(turbofan): mixed signed/unsigned int32 comparisons. 3277d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org r.ConvertInputsToNumber(); 3287d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org less_than = simplified()->NumberLessThan(); 3297d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org less_than_or_equal = simplified()->NumberLessThanOrEqual(); 3307d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 3312c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org const Operator* comparison; 3327d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org switch (node->opcode()) { 3337d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSLessThan: 3347d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org comparison = less_than; 3357d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org break; 3367d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSGreaterThan: 3377d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org comparison = less_than; 3387d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org r.SwapInputs(); // a > b => b < a 3397d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org break; 3407d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSLessThanOrEqual: 3417d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org comparison = less_than_or_equal; 3427d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org break; 3437d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSGreaterThanOrEqual: 3447d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org comparison = less_than_or_equal; 3457d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org r.SwapInputs(); // a >= b => b <= a 3467d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org break; 3477d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org default: 3487d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return NoChange(); 3497d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 3507d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator(comparison); 3517d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 3527d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // TODO(turbofan): relax/remove effects of this operator in other cases. 3537d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return NoChange(); // Keep a generic comparison. 3547d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org} 3557d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 3567d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 3577d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgReduction JSTypedLowering::ReduceJSEqual(Node* node, bool invert) { 3587d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org JSBinopReduction r(this, node); 3597d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 3607d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.BothInputsAre(Type::Number())) { 3617d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator(simplified()->NumberEqual(), invert); 3627d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 3637d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.BothInputsAre(Type::String())) { 3647d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator(simplified()->StringEqual(), invert); 3657d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 3667d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.BothInputsAre(Type::Receiver())) { 3677d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator( 3687d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org simplified()->ReferenceEqual(Type::Receiver()), invert); 3697d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 3707d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // TODO(turbofan): js-typed-lowering of Equal(undefined) 3717d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // TODO(turbofan): js-typed-lowering of Equal(null) 3727d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // TODO(turbofan): js-typed-lowering of Equal(boolean) 3737d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return NoChange(); 3747d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org} 3757d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 3767d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 3777d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgReduction JSTypedLowering::ReduceJSStrictEqual(Node* node, bool invert) { 3787d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org JSBinopReduction r(this, node); 3797d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.left() == r.right()) { 3807d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // x === x is always true if x != NaN 3817d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (!r.left_type()->Maybe(Type::NaN())) { 3827d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReplaceEagerly(node, invert ? jsgraph()->FalseConstant() 3837d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org : jsgraph()->TrueConstant()); 3847d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 3857d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 3867d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (!r.left_type()->Maybe(r.right_type())) { 3877d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Type intersection is empty; === is always false unless both 3887d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // inputs could be strings (one internalized and one not). 3897d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.OneInputCannotBe(Type::String())) { 3907d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReplaceEagerly(node, invert ? jsgraph()->TrueConstant() 3917d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org : jsgraph()->FalseConstant()); 3927d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 3937d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 3947d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.OneInputIs(Type::Undefined())) { 3957d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator( 3967d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org simplified()->ReferenceEqual(Type::Undefined()), invert); 3977d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 3987d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.OneInputIs(Type::Null())) { 3997d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator(simplified()->ReferenceEqual(Type::Null()), 4007d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org invert); 4017d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4027d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.OneInputIs(Type::Boolean())) { 4037d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator(simplified()->ReferenceEqual(Type::Boolean()), 4047d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org invert); 4057d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4067d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.OneInputIs(Type::Object())) { 4077d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator(simplified()->ReferenceEqual(Type::Object()), 4087d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org invert); 4097d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4107d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.OneInputIs(Type::Receiver())) { 4117d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator( 4127d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org simplified()->ReferenceEqual(Type::Receiver()), invert); 4137d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4147d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.BothInputsAre(Type::String())) { 4157d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator(simplified()->StringEqual(), invert); 4167d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4177d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (r.BothInputsAre(Type::Number())) { 4187d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return r.ChangeToPureOperator(simplified()->NumberEqual(), invert); 4197d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4207d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // TODO(turbofan): js-typed-lowering of StrictEqual(mixed types) 4217d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return NoChange(); 4227d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org} 4237d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 4247d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 4257d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgReduction JSTypedLowering::ReduceJSToNumberInput(Node* input) { 4267d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input->opcode() == IrOpcode::kJSToNumber) { 4277d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Recursively try to reduce the input first. 4287d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Reduction result = ReduceJSToNumberInput(input->InputAt(0)); 4297d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (result.Changed()) { 4307d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org RelaxEffects(input); 4317d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return result; 4327d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4337d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return Changed(input); // JSToNumber(JSToNumber(x)) => JSToNumber(x) 4347d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4357d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Type* input_type = NodeProperties::GetBounds(input).upper; 4367d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input_type->Is(Type::Number())) { 4376313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org // JSToNumber(x:number) => x 4387d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return Changed(input); 4397d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4407d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input_type->Is(Type::Undefined())) { 4417d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // JSToNumber(undefined) => #NaN 4427d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReplaceWith(jsgraph()->NaNConstant()); 4437d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4447d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input_type->Is(Type::Null())) { 4457d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // JSToNumber(null) => #0 4467d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReplaceWith(jsgraph()->ZeroConstant()); 4477d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 448a2c0c1516848536a514b3178d2c040b7df0ceb5bmachenbach@chromium.org if (input_type->Is(Type::Boolean())) { 449a2c0c1516848536a514b3178d2c040b7df0ceb5bmachenbach@chromium.org // JSToNumber(x:boolean) => BooleanToNumber(x) 450a2c0c1516848536a514b3178d2c040b7df0ceb5bmachenbach@chromium.org return ReplaceWith( 451a2c0c1516848536a514b3178d2c040b7df0ceb5bmachenbach@chromium.org graph()->NewNode(simplified()->BooleanToNumber(), input)); 452a2c0c1516848536a514b3178d2c040b7df0ceb5bmachenbach@chromium.org } 4536313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org // TODO(turbofan): js-typed-lowering of ToNumber(x:string) 4547d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return NoChange(); 4557d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org} 4567d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 4577d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 4587d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgReduction JSTypedLowering::ReduceJSToStringInput(Node* input) { 4597d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input->opcode() == IrOpcode::kJSToString) { 4607d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Recursively try to reduce the input first. 4617d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Reduction result = ReduceJSToStringInput(input->InputAt(0)); 4627d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (result.Changed()) { 4637d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org RelaxEffects(input); 4647d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return result; 4657d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4667d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return Changed(input); // JSToString(JSToString(x)) => JSToString(x) 4677d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4687d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Type* input_type = NodeProperties::GetBounds(input).upper; 4697d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input_type->Is(Type::String())) { 4706313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org return Changed(input); // JSToString(x:string) => x 4717d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4727d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input_type->Is(Type::Undefined())) { 4737d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReplaceWith(jsgraph()->HeapConstant( 4747d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org graph()->zone()->isolate()->factory()->undefined_string())); 4757d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4767d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input_type->Is(Type::Null())) { 4777d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReplaceWith(jsgraph()->HeapConstant( 4787d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org graph()->zone()->isolate()->factory()->null_string())); 4797d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4806313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org // TODO(turbofan): js-typed-lowering of ToString(x:boolean) 4816313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org // TODO(turbofan): js-typed-lowering of ToString(x:number) 4827d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return NoChange(); 4837d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org} 4847d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 4857d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 4867d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgReduction JSTypedLowering::ReduceJSToBooleanInput(Node* input) { 4877d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input->opcode() == IrOpcode::kJSToBoolean) { 4887d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Recursively try to reduce the input first. 4897d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Reduction result = ReduceJSToBooleanInput(input->InputAt(0)); 4907d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (result.Changed()) { 4917d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org RelaxEffects(input); 4927d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return result; 4937d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4947d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return Changed(input); // JSToBoolean(JSToBoolean(x)) => JSToBoolean(x) 4957d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 4967d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Type* input_type = NodeProperties::GetBounds(input).upper; 4977d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input_type->Is(Type::Boolean())) { 4986313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org return Changed(input); // JSToBoolean(x:boolean) => x 4997d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 5007d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input_type->Is(Type::Undefined())) { 5017d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // JSToBoolean(undefined) => #false 5027d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReplaceWith(jsgraph()->FalseConstant()); 5037d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 5047d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input_type->Is(Type::Null())) { 5057d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // JSToBoolean(null) => #false 5067d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReplaceWith(jsgraph()->FalseConstant()); 5077d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 5087d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input_type->Is(Type::DetectableReceiver())) { 5096313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org // JSToBoolean(x:detectable) => #true 5107d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReplaceWith(jsgraph()->TrueConstant()); 5117d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 5127d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (input_type->Is(Type::Undetectable())) { 5136313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org // JSToBoolean(x:undetectable) => #false 5147d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReplaceWith(jsgraph()->FalseConstant()); 5157d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 5166313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org if (input_type->Is(Type::OrderedNumber())) { 5176313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org // JSToBoolean(x:ordered-number) => BooleanNot(NumberEqual(x, #0)) 5187d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* cmp = graph()->NewNode(simplified()->NumberEqual(), input, 5197d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org jsgraph()->ZeroConstant()); 5207d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* inv = graph()->NewNode(simplified()->BooleanNot(), cmp); 5219aaa825cf89e1bcfece269a453300ebf4a26d64dmachenbach@chromium.org return ReplaceWith(inv); 5227d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 5237d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // TODO(turbofan): js-typed-lowering of ToBoolean(string) 5247d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return NoChange(); 5257d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org} 5267d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 5277d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 5282c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.orgReduction JSTypedLowering::ReduceJSLoadProperty(Node* node) { 529c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org Node* key = NodeProperties::GetValueInput(node, 1); 530c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org Node* base = NodeProperties::GetValueInput(node, 0); 531c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org Type* key_type = NodeProperties::GetBounds(key).upper; 532c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org Type* base_type = NodeProperties::GetBounds(base).upper; 533c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org // TODO(mstarzinger): This lowering is not correct if: 534c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org // a) The typed array turns external (i.e. MaterializeArrayBuffer) 535c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org // b) The typed array or it's buffer is neutered. 536c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org // c) The index is out of bounds. 537c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org if (base_type->IsConstant() && key_type->Is(Type::Integral32()) && 538c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org base_type->AsConstant()->Value()->IsJSTypedArray()) { 539c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org // JSLoadProperty(typed-array, int32) 540c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org JSTypedArray* array = JSTypedArray::cast(*base_type->AsConstant()->Value()); 541c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org ElementsKind elements_kind = array->map()->elements_kind(); 542c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org ExternalArrayType type = array->type(); 543b4ef18e93b120b995e067ba72707b62a448eeed6machenbach@chromium.org uint32_t length; 544b4ef18e93b120b995e067ba72707b62a448eeed6machenbach@chromium.org CHECK(array->length()->ToUint32(&length)); 545c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org ElementAccess element_access; 546c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org Node* elements = graph()->NewNode( 547c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org simplified()->LoadField(AccessBuilder::ForJSObjectElements()), base, 548c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org NodeProperties::GetEffectInput(node)); 549c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org if (IsExternalArrayElementsKind(elements_kind)) { 550c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org elements = graph()->NewNode( 551c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org simplified()->LoadField(AccessBuilder::ForExternalArrayPointer()), 552c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org elements, NodeProperties::GetEffectInput(node)); 553c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org element_access = AccessBuilder::ForTypedArrayElement(type, true); 554c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org } else { 555c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org DCHECK(IsFixedTypedArrayElementsKind(elements_kind)); 556c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org element_access = AccessBuilder::ForTypedArrayElement(type, false); 557c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org } 558c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org Node* value = 559c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org graph()->NewNode(simplified()->LoadElement(element_access), elements, 560b4ef18e93b120b995e067ba72707b62a448eeed6machenbach@chromium.org key, jsgraph()->Uint32Constant(length), 561b4ef18e93b120b995e067ba72707b62a448eeed6machenbach@chromium.org NodeProperties::GetEffectInput(node)); 562c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org return ReplaceEagerly(node, value); 563c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org } 564c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org return NoChange(); 565c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org} 566c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org 567c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org 5682c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.orgReduction JSTypedLowering::ReduceJSStoreProperty(Node* node) { 5692c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org Node* key = NodeProperties::GetValueInput(node, 1); 5702c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org Node* base = NodeProperties::GetValueInput(node, 0); 5712c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org Node* value = NodeProperties::GetValueInput(node, 2); 5722c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org Type* key_type = NodeProperties::GetBounds(key).upper; 5732c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org Type* base_type = NodeProperties::GetBounds(base).upper; 5742c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org // TODO(mstarzinger): This lowering is not correct if: 5752c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org // a) The typed array turns external (i.e. MaterializeArrayBuffer) 5762c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org // b) The typed array or it's buffer is neutered. 5772c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org if (key_type->Is(Type::Integral32()) && base_type->IsConstant() && 5782c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org base_type->AsConstant()->Value()->IsJSTypedArray()) { 5792c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org // JSStoreProperty(typed-array, int32, value) 5802c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org JSTypedArray* array = JSTypedArray::cast(*base_type->AsConstant()->Value()); 5812c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org ElementsKind elements_kind = array->map()->elements_kind(); 5822c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org ExternalArrayType type = array->type(); 58306b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org uint32_t length; 58406b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org CHECK(array->length()->ToUint32(&length)); 5852c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org ElementAccess element_access; 5862c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org Node* elements = graph()->NewNode( 5872c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org simplified()->LoadField(AccessBuilder::ForJSObjectElements()), base, 5882c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org NodeProperties::GetEffectInput(node)); 5892c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org if (IsExternalArrayElementsKind(elements_kind)) { 5902c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org elements = graph()->NewNode( 5912c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org simplified()->LoadField(AccessBuilder::ForExternalArrayPointer()), 5922c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org elements, NodeProperties::GetEffectInput(node)); 5932c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org element_access = AccessBuilder::ForTypedArrayElement(type, true); 5942c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org } else { 5952c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org DCHECK(IsFixedTypedArrayElementsKind(elements_kind)); 5962c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org element_access = AccessBuilder::ForTypedArrayElement(type, false); 5972c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org } 59806b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org 59906b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org Node* check = graph()->NewNode(machine()->Uint32LessThan(), key, 60006b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org jsgraph()->Uint32Constant(length)); 60106b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org Node* branch = graph()->NewNode(common()->Branch(), check, 60206b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org NodeProperties::GetControlInput(node)); 60306b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org 60406b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org Node* if_true = graph()->NewNode(common()->IfTrue(), branch); 605b4ef18e93b120b995e067ba72707b62a448eeed6machenbach@chromium.org Node* store = 606b4ef18e93b120b995e067ba72707b62a448eeed6machenbach@chromium.org graph()->NewNode(simplified()->StoreElement(element_access), elements, 607b4ef18e93b120b995e067ba72707b62a448eeed6machenbach@chromium.org key, jsgraph()->Uint32Constant(length), value, 608b4ef18e93b120b995e067ba72707b62a448eeed6machenbach@chromium.org NodeProperties::GetEffectInput(node), if_true); 60906b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org 61006b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org Node* if_false = graph()->NewNode(common()->IfFalse(), branch); 61106b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org 61206b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org Node* merge = graph()->NewNode(common()->Merge(2), if_true, if_false); 61306b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org Node* phi = graph()->NewNode(common()->EffectPhi(2), store, 61406b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org NodeProperties::GetEffectInput(node), merge); 61506b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org 61606b2696801712948b665372a38f96b1f10be6997machenbach@chromium.org return ReplaceWith(phi); 6172c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org } 6182c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org return NoChange(); 6192c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org} 6202c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org 6212c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org 6227d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgstatic Reduction ReplaceWithReduction(Node* node, Reduction reduction) { 6237d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (reduction.Changed()) { 624e2a8937454723a720c81acc3f9e4162b18999b43machenbach@chromium.org NodeProperties::ReplaceWithValue(node, reduction.replacement()); 6257d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return reduction; 6267d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 6277d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return Reducer::NoChange(); 6287d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org} 6297d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 6307d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org 6317d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.orgReduction JSTypedLowering::Reduce(Node* node) { 6327d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org switch (node->opcode()) { 6337d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSEqual: 6347d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceJSEqual(node, false); 6357d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSNotEqual: 6367d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceJSEqual(node, true); 6377d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSStrictEqual: 6387d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceJSStrictEqual(node, false); 6397d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSStrictNotEqual: 6407d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceJSStrictEqual(node, true); 6417d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSLessThan: // fall through 6427d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSGreaterThan: // fall through 6437d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSLessThanOrEqual: // fall through 6447d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSGreaterThanOrEqual: 6457d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceJSComparison(node); 6467d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSBitwiseOr: 6477d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceI32Binop(node, true, true, machine()->Word32Or()); 6487d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSBitwiseXor: 6497d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceI32Binop(node, true, true, machine()->Word32Xor()); 6507d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSBitwiseAnd: 6517d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceI32Binop(node, true, true, machine()->Word32And()); 6527d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSShiftLeft: 6537d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceI32Shift(node, true, machine()->Word32Shl()); 6547d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSShiftRight: 6557d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceI32Shift(node, true, machine()->Word32Sar()); 6567d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSShiftRightLogical: 6577d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceI32Shift(node, false, machine()->Word32Shr()); 6587d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSAdd: 6597d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceJSAdd(node); 6607d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSSubtract: 6617d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceNumberBinop(node, simplified()->NumberSubtract()); 6627d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSMultiply: 6637d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceNumberBinop(node, simplified()->NumberMultiply()); 6647d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSDivide: 6657d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceNumberBinop(node, simplified()->NumberDivide()); 6667d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSModulus: 6677d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReduceNumberBinop(node, simplified()->NumberModulus()); 6687d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSUnaryNot: { 6697d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Reduction result = ReduceJSToBooleanInput(node->InputAt(0)); 6707d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org Node* value; 6717d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org if (result.Changed()) { 6726313e220249748eb26e1ddcee2bbe857fef03b42machenbach@chromium.org // JSUnaryNot(x:boolean) => BooleanNot(x) 6737d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org value = 6747d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org graph()->NewNode(simplified()->BooleanNot(), result.replacement()); 675e2a8937454723a720c81acc3f9e4162b18999b43machenbach@chromium.org NodeProperties::ReplaceWithValue(node, value); 6767d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return Changed(value); 6777d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } else { 678ada3a6017e603965f87fa34f6e2fa60379e8d697machenbach@chromium.org // JSUnaryNot(x) => BooleanNot(JSToBoolean(x)) 6797d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org value = graph()->NewNode(simplified()->BooleanNot(), node); 6807d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org node->set_op(javascript()->ToBoolean()); 681e2a8937454723a720c81acc3f9e4162b18999b43machenbach@chromium.org NodeProperties::ReplaceWithValue(node, value, node); 6827d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org // Note: ReplaceUses() smashes all uses, so smash it back here. 6837d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org value->ReplaceInput(0, node); 684ada3a6017e603965f87fa34f6e2fa60379e8d697machenbach@chromium.org return Changed(node); 6857d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 6867d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 6877d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSToBoolean: 6887d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReplaceWithReduction(node, 6897d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org ReduceJSToBooleanInput(node->InputAt(0))); 6907d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSToNumber: 6917d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReplaceWithReduction(node, 6927d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org ReduceJSToNumberInput(node->InputAt(0))); 6937d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org case IrOpcode::kJSToString: 6947d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return ReplaceWithReduction(node, 6957d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org ReduceJSToStringInput(node->InputAt(0))); 696c6509d2e0fb825426296fbc357cf89f2c77ff434machenbach@chromium.org case IrOpcode::kJSLoadProperty: 6972c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org return ReduceJSLoadProperty(node); 6982c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org case IrOpcode::kJSStoreProperty: 6992c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org return ReduceJSStoreProperty(node); 700a2c0c1516848536a514b3178d2c040b7df0ceb5bmachenbach@chromium.org case IrOpcode::kJSCallFunction: 701a2c0c1516848536a514b3178d2c040b7df0ceb5bmachenbach@chromium.org return JSBuiltinReducer(jsgraph()).Reduce(node); 7027d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org default: 7037d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org break; 7047d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org } 7057d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org return NoChange(); 7067d299ad4dc0ca26e0017b190b48362ad71328ce4machenbach@chromium.org} 7072c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org 7082c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org} // namespace compiler 7092c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org} // namespace internal 7102c81ceb7f1e1ccf5f304be0646f4c1375941a7f2machenbach@chromium.org} // namespace v8 711