[WIP] TrapHandler 2014/11/27.

test/cctest/compiler/test-simplified-lowering.cc

 // Copyright 2014 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 <limits>
 
 #include "src/compiler/access-builder.h"
 #include "src/compiler/change-lowering.h"
 #include "src/compiler/control-builders.h"
 #include "src/compiler/generic-node-inl.h"
@@ skipping 215 matching lines @@
     CHECK(result->IsMap());
     CHECK_EQ(*src_map, result);
     CHECK(*src_map == dst->map());
   }
 }
 
 
 TEST(RunLoadStoreFixedArrayIndex) {
   SimplifiedLoweringTester<Object*> t(kMachAnyTagged);
   ElementAccess access = AccessBuilder::ForFixedArrayElement();
-  Node* load = t.LoadElement(access, t.Parameter(0), t.Int32Constant(0),
-                             t.Int32Constant(2));
-  t.StoreElement(access, t.Parameter(0), t.Int32Constant(1), t.Int32Constant(2),
-                 load);
+  Node* load = t.LoadElement(access, t.Parameter(0), t.Int32Constant(0));
+  t.StoreElement(access, t.Parameter(0), t.Int32Constant(1), load);
   t.Return(load);
 
   t.LowerAllNodes();
   t.GenerateCode();
 
   if (Pipeline::SupportedTarget()) {
     Handle<FixedArray> array = t.factory()->NewFixedArray(2);
     Handle<JSObject> src = TestObject();
     Handle<JSObject> dst = TestObject();
     array->set(0, *src);
     array->set(1, *dst);
     Object* result = t.Call(*array);
     CHECK_EQ(*src, result);
     CHECK_EQ(*src, array->get(0));
     CHECK_EQ(*src, array->get(1));
   }
 }
 
 
 TEST(RunLoadStoreArrayBuffer) {
   SimplifiedLoweringTester<Object*> t(kMachAnyTagged);
   const int index = 12;
   const int array_length = 2 * index;
   ElementAccess buffer_access =
       AccessBuilder::ForTypedArrayElement(v8::kExternalInt8Array, true);
   Node* backing_store = t.LoadField(
       AccessBuilder::ForJSArrayBufferBackingStore(), t.Parameter(0));
   Node* load =
-      t.LoadElement(buffer_access, backing_store, t.Int32Constant(index),
-                    t.Int32Constant(array_length));
+      t.LoadElement(buffer_access, backing_store, t.Int32Constant(index));
   t.StoreElement(buffer_access, backing_store, t.Int32Constant(index + 1),
-                 t.Int32Constant(array_length), load);
+                 load);
   t.Return(t.jsgraph.TrueConstant());
 
   t.LowerAllNodes();
   t.GenerateCode();
 
   if (Pipeline::SupportedTarget()) {
     Handle<JSArrayBuffer> array = t.factory()->NewJSArrayBuffer();
     Runtime::SetupArrayBufferAllocatingData(t.isolate(), array, array_length);
     uint8_t* data = reinterpret_cast<uint8_t*>(array->backing_store());
     for (int i = 0; i < array_length; i++) {
@@ skipping 62 matching lines @@
 }
 
 
 TEST(RunLoadElementFromUntaggedBase) {
   Smi* smis[] = {Smi::FromInt(1), Smi::FromInt(2), Smi::FromInt(3),
                  Smi::FromInt(4), Smi::FromInt(5)};
 
   for (size_t i = 0; i < arraysize(smis); i++) {    // for header sizes
     for (size_t j = 0; (i + j) < arraysize(smis); j++) {  // for element index
       int offset = static_cast<int>(i * sizeof(Smi*));
-      ElementAccess access = {kNoBoundsCheck, kUntaggedBase, offset,
-                              Type::Integral32(), kMachAnyTagged};
+      ElementAccess access = {kUntaggedBase, offset, Type::Integral32(),
+                              kMachAnyTagged};
 
       SimplifiedLoweringTester<Object*> t;
-      Node* load = t.LoadElement(
-          access, t.PointerConstant(smis), t.Int32Constant(static_cast<int>(j)),
-          t.Int32Constant(static_cast<int>(arraysize(smis))));
+      Node* load = t.LoadElement(access, t.PointerConstant(smis),
+                                 t.Int32Constant(static_cast<int>(j)));
       t.Return(load);
       t.LowerAllNodes();
 
       if (!Pipeline::SupportedTarget()) continue;
 
       for (int k = -5; k <= 5; k++) {
         Smi* expected = Smi::FromInt(k);
         smis[i + j] = expected;
         CHECK_EQ(expected, t.Call());
       }
     }
   }
 }
 
 
 TEST(RunStoreElementFromUntaggedBase) {
   Smi* smis[] = {Smi::FromInt(1), Smi::FromInt(2), Smi::FromInt(3),
                  Smi::FromInt(4), Smi::FromInt(5)};
 
   for (size_t i = 0; i < arraysize(smis); i++) {    // for header sizes
     for (size_t j = 0; (i + j) < arraysize(smis); j++) {  // for element index
       int offset = static_cast<int>(i * sizeof(Smi*));
-      ElementAccess access = {kNoBoundsCheck, kUntaggedBase, offset,
-                              Type::Integral32(), kMachAnyTagged};
+      ElementAccess access = {kUntaggedBase, offset, Type::Integral32(),
+                              kMachAnyTagged};
 
       SimplifiedLoweringTester<Object*> t(kMachAnyTagged);
       Node* p0 = t.Parameter(0);
       t.StoreElement(access, t.PointerConstant(smis),
-                     t.Int32Constant(static_cast<int>(j)),
-                     t.Int32Constant(static_cast<int>(arraysize(smis))), p0);
+                     t.Int32Constant(static_cast<int>(j)), p0);
       t.Return(p0);
       t.LowerAllNodes();
 
       if (!Pipeline::SupportedTarget()) continue;
 
       for (int k = -5; k <= 5; k++) {
         Smi* expected = Smi::FromInt(k);
         smis[i + j] = Smi::FromInt(-100);
         CHECK_EQ(expected, t.Call(expected));
         CHECK_EQ(expected, smis[i + j]);
@@ skipping 45 matching lines @@
   // or {tagged_array} at index {from_index} to index {to_index}.
   void RunCopyElement(int from_index, int to_index) {
     // TODO(titzer): test element and field accesses where the base is not
     // a constant in the code.
     BoundsCheck(from_index);
     BoundsCheck(to_index);
     ElementAccess access = GetElementAccess();
 
     SimplifiedLoweringTester<Object*> t;
     Node* ptr = GetBaseNode(&t);
-    Node* load = t.LoadElement(access, ptr, t.Int32Constant(from_index),
-                               t.Int32Constant(static_cast<int>(num_elements)));
-    t.StoreElement(access, ptr, t.Int32Constant(to_index),
-                   t.Int32Constant(static_cast<int>(num_elements)), load);
+    Node* load = t.LoadElement(access, ptr, t.Int32Constant(from_index));
+    t.StoreElement(access, ptr, t.Int32Constant(to_index), load);
     t.Return(t.jsgraph.TrueConstant());
     t.LowerAllNodes();
     t.GenerateCode();
 
     if (Pipeline::SupportedTarget()) {
       Object* result = t.Call();
       CHECK_EQ(t.isolate()->heap()->true_value(), result);
     }
   }
 
@@ skipping 66 matching lines @@
     if (tagged) {
       E* raw = reinterpret_cast<E*>(tagged_array->GetDataStartAddress());
       return raw[index];
     } else {
       return untagged_array[index];
     }
   }
 
  private:
   ElementAccess GetElementAccess() {
-    ElementAccess access = {
-        kNoBoundsCheck, tagged ? kTaggedBase : kUntaggedBase,
-        tagged ? FixedArrayBase::kHeaderSize : 0, Type::Any(), rep};
+    ElementAccess access = {tagged ? kTaggedBase : kUntaggedBase,
+                            tagged ? FixedArrayBase::kHeaderSize : 0,
+                            Type::Any(), rep};
     return access;
   }
 
   FieldAccess GetFieldAccess(int field) {
     int offset = field * sizeof(E);
     FieldAccess access = {tagged ? kTaggedBase : kUntaggedBase,
                           offset + (tagged ? FixedArrayBase::kHeaderSize : 0),
                           Handle<Name>(), Type::Any(), rep};
     return access;
   }
@@ skipping 819 matching lines @@
 
 void CheckFieldAccessArithmetic(FieldAccess access, Node* load_or_store) {
   IntPtrMatcher mindex(load_or_store->InputAt(1));
   CHECK(mindex.Is(access.offset - access.tag()));
 }
 
 
 Node* CheckElementAccessArithmetic(ElementAccess access, Node* load_or_store) {
   Node* index = load_or_store->InputAt(1);
   if (kPointerSize == 8) {
-    CHECK_EQ(IrOpcode::kChangeUint32ToUint64, index->opcode());
+    CHECK_EQ(IrOpcode::kChangeInt32ToInt64, index->opcode());
     index = index->InputAt(0);
   }
 
   Int32BinopMatcher mindex(index);
   CHECK_EQ(IrOpcode::kInt32Add, mindex.node()->opcode());
   CHECK(mindex.right().Is(access.header_size - access.tag()));
 
   const int element_size_shift = ElementSizeLog2Of(access.machine_type);
   if (element_size_shift) {
     Int32BinopMatcher shl(mindex.left().node());
@@ skipping 58 matching lines @@
     }
     CHECK_EQ(kMachineReps[i], rep.machine_type());
   }
 }
 
 
 TEST(LowerLoadElement_to_load) {
   TestingGraph t(Type::Any(), Type::Signed32());
 
   for (size_t i = 0; i < arraysize(kMachineReps); i++) {
-    ElementAccess access = {kNoBoundsCheck, kTaggedBase,
-                            FixedArrayBase::kHeaderSize, Type::Any(),
-                            kMachineReps[i]};
+    ElementAccess access = {kTaggedBase, FixedArrayBase::kHeaderSize,
+                            Type::Any(), kMachineReps[i]};
 
     Node* load =
         t.graph()->NewNode(t.simplified()->LoadElement(access), t.p0, t.p1,
                            t.jsgraph.Int32Constant(1024), t.start, t.start);
     Node* use = t.Use(load, kMachineReps[i]);
     t.Return(use);
     t.Lower();
     CHECK_EQ(IrOpcode::kLoad, load->opcode());
     CHECK_EQ(t.p0, load->InputAt(0));
     CheckElementAccessArithmetic(access, load);
 
     MachineType rep = OpParameter<MachineType>(load);
     CHECK_EQ(kMachineReps[i], rep);
   }
 }
 
 
 TEST(LowerStoreElement_to_store) {
   TestingGraph t(Type::Any(), Type::Signed32());
 
   for (size_t i = 0; i < arraysize(kMachineReps); i++) {
-    ElementAccess access = {kNoBoundsCheck, kTaggedBase,
-                            FixedArrayBase::kHeaderSize, Type::Any(),
-                            kMachineReps[i]};
+    ElementAccess access = {kTaggedBase, FixedArrayBase::kHeaderSize,
+                            Type::Any(), kMachineReps[i]};
 
     Node* val = t.ExampleWithOutput(kMachineReps[i]);
     Node* store = t.graph()->NewNode(t.simplified()->StoreElement(access), t.p0,
-                                     t.p1, t.jsgraph.Int32Constant(1024), val,
-                                     t.start, t.start);
+                                     t.p1, val, t.start, t.start);
     t.Effect(store);
     t.Lower();
     CHECK_EQ(IrOpcode::kStore, store->opcode());
     CHECK_EQ(val, store->InputAt(2));
     CheckElementAccessArithmetic(access, store);
 
     StoreRepresentation rep = OpParameter<StoreRepresentation>(store);
     if (kMachineReps[i] & kRepTagged) {
       CHECK_EQ(kFullWriteBarrier, rep.write_barrier_kind());
     }
     CHECK_EQ(kMachineReps[i], rep.machine_type());
   }
 }
 
 
 TEST(InsertChangeForLoadElementIndex) {
   // LoadElement(obj: Tagged, index: kTypeInt32 | kRepTagged, length) =>
   //   Load(obj, Int32Add(Int32Mul(ChangeTaggedToInt32(index), #k), #k))
   TestingGraph t(Type::Any(), Type::Signed32(), Type::Any());
-  ElementAccess access = {kNoBoundsCheck, kTaggedBase,
-                          FixedArrayBase::kHeaderSize, Type::Any(),
+  ElementAccess access = {kTaggedBase, FixedArrayBase::kHeaderSize, Type::Any(),
                           kMachAnyTagged};
 
   Node* load = t.graph()->NewNode(t.simplified()->LoadElement(access), t.p0,
                                   t.p1, t.p2, t.start, t.start);
   t.Return(load);
   t.Lower();
   CHECK_EQ(IrOpcode::kLoad, load->opcode());
   CHECK_EQ(t.p0, load->InputAt(0));
 
   Node* index = CheckElementAccessArithmetic(access, load);
   CheckChangeOf(IrOpcode::kChangeTaggedToInt32, t.p1, index);
 }
 
 
 TEST(InsertChangeForStoreElementIndex) {
   // StoreElement(obj: Tagged, index: kTypeInt32 | kRepTagged, length, val) =>
   //   Store(obj, Int32Add(Int32Mul(ChangeTaggedToInt32(index), #k), #k), val)
   TestingGraph t(Type::Any(), Type::Signed32(), Type::Any());
-  ElementAccess access = {kNoBoundsCheck, kTaggedBase,
-                          FixedArrayBase::kHeaderSize, Type::Any(),
+  ElementAccess access = {kTaggedBase, FixedArrayBase::kHeaderSize, Type::Any(),
                           kMachAnyTagged};
 
   Node* store =
       t.graph()->NewNode(t.simplified()->StoreElement(access), t.p0, t.p1, t.p2,
                          t.jsgraph.TrueConstant(), t.start, t.start);
   t.Effect(store);
   t.Lower();
   CHECK_EQ(IrOpcode::kStore, store->opcode());
   CHECK_EQ(t.p0, store->InputAt(0));
 
   Node* index = CheckElementAccessArithmetic(access, store);
   CheckChangeOf(IrOpcode::kChangeTaggedToInt32, t.p1, index);
 }
 
 
 TEST(InsertChangeForLoadElement) {
   // TODO(titzer): test all load/store representation change insertions.
   TestingGraph t(Type::Any(), Type::Signed32(), Type::Any());
-  ElementAccess access = {kNoBoundsCheck, kTaggedBase,
-                          FixedArrayBase::kHeaderSize, Type::Any(),
+  ElementAccess access = {kTaggedBase, FixedArrayBase::kHeaderSize, Type::Any(),
                           kMachFloat64};
 
   Node* load = t.graph()->NewNode(t.simplified()->LoadElement(access), t.p0,
                                   t.p1, t.p1, t.start, t.start);
   t.Return(load);
   t.Lower();
   CHECK_EQ(IrOpcode::kLoad, load->opcode());
   CHECK_EQ(t.p0, load->InputAt(0));
   CheckChangeOf(IrOpcode::kChangeFloat64ToTagged, load, t.ret->InputAt(0));
 }
@@ skipping 11 matching lines @@
   t.Lower();
   CHECK_EQ(IrOpcode::kLoad, load->opcode());
   CHECK_EQ(t.p0, load->InputAt(0));
   CheckChangeOf(IrOpcode::kChangeFloat64ToTagged, load, t.ret->InputAt(0));
 }
 
 
 TEST(InsertChangeForStoreElement) {
   // TODO(titzer): test all load/store representation change insertions.
   TestingGraph t(Type::Any(), Type::Signed32(), Type::Any());
-  ElementAccess access = {kNoBoundsCheck, kTaggedBase,
-                          FixedArrayBase::kHeaderSize, Type::Any(),
+  ElementAccess access = {kTaggedBase, FixedArrayBase::kHeaderSize, Type::Any(),
                           kMachFloat64};
 
   Node* store = t.graph()->NewNode(t.simplified()->StoreElement(access), t.p0,
-                                   t.jsgraph.Int32Constant(0), t.p2, t.p1,
-                                   t.start, t.start);
+                                   t.p2, t.p1, t.start, t.start);
   t.Effect(store);
   t.Lower();
 
   CHECK_EQ(IrOpcode::kStore, store->opcode());
   CHECK_EQ(t.p0, store->InputAt(0));
   CheckChangeOf(IrOpcode::kChangeTaggedToFloat64, t.p1, store->InputAt(2));
 }
 
 
 TEST(InsertChangeForStoreField) {
@@ skipping 438 matching lines @@
     Bounds phi_bounds = Bounds::Either(Bounds(d.arg1), Bounds(d.arg2), z);
     NodeProperties::SetBounds(phi, phi_bounds);
 
     Node* use = t.Use(phi, d.use);
     t.Return(use);
     t.Lower();
 
     CHECK_EQ(d.expected, OpParameter<MachineType>(phi));
   }
 }