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Unified Diff: src/arm/lithium-codegen-arm.cc

Issue 17491002: Revert r14930 and r14935 temporarily. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 6 months ago
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Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index b7c733cb259a0c589cb94a19a608570c99fdd598..b5ed662ff198067304e4cdd5eedbb140d2d24019 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -5365,6 +5365,80 @@ void LCodeGen::DoCheckPrototypeMaps(LCheckPrototypeMaps* instr) {
}
+void LCodeGen::DoAllocateObject(LAllocateObject* instr) {
+ class DeferredAllocateObject: public LDeferredCode {
+ public:
+ DeferredAllocateObject(LCodeGen* codegen, LAllocateObject* instr)
+ : LDeferredCode(codegen), instr_(instr) { }
+ virtual void Generate() { codegen()->DoDeferredAllocateObject(instr_); }
+ virtual LInstruction* instr() { return instr_; }
+ private:
+ LAllocateObject* instr_;
+ };
+
+ DeferredAllocateObject* deferred =
+ new(zone()) DeferredAllocateObject(this, instr);
+
+ Register result = ToRegister(instr->result());
+ Register scratch = ToRegister(instr->temp());
+ Register scratch2 = ToRegister(instr->temp2());
+ Handle<JSFunction> constructor = instr->hydrogen()->constructor();
+ Handle<Map> initial_map = instr->hydrogen()->constructor_initial_map();
+ int instance_size = initial_map->instance_size();
+ ASSERT(initial_map->pre_allocated_property_fields() +
+ initial_map->unused_property_fields() -
+ initial_map->inobject_properties() == 0);
+
+ __ Allocate(instance_size, result, scratch, scratch2, deferred->entry(),
+ TAG_OBJECT);
+
+ __ bind(deferred->exit());
+ if (FLAG_debug_code) {
+ Label is_in_new_space;
+ __ JumpIfInNewSpace(result, scratch, &is_in_new_space);
+ __ Abort("Allocated object is not in new-space");
+ __ bind(&is_in_new_space);
+ }
+
+ // Load the initial map.
+ Register map = scratch;
+ __ LoadHeapObject(map, constructor);
+ __ ldr(map, FieldMemOperand(map, JSFunction::kPrototypeOrInitialMapOffset));
+
+ // Initialize map and fields of the newly allocated object.
+ ASSERT(initial_map->instance_type() == JS_OBJECT_TYPE);
+ __ str(map, FieldMemOperand(result, JSObject::kMapOffset));
+ __ LoadRoot(scratch, Heap::kEmptyFixedArrayRootIndex);
+ __ str(scratch, FieldMemOperand(result, JSObject::kElementsOffset));
+ __ str(scratch, FieldMemOperand(result, JSObject::kPropertiesOffset));
+ if (initial_map->inobject_properties() != 0) {
+ __ LoadRoot(scratch, Heap::kUndefinedValueRootIndex);
+ for (int i = 0; i < initial_map->inobject_properties(); i++) {
+ int property_offset = JSObject::kHeaderSize + i * kPointerSize;
+ __ str(scratch, FieldMemOperand(result, property_offset));
+ }
+ }
+}
+
+
+void LCodeGen::DoDeferredAllocateObject(LAllocateObject* instr) {
+ Register result = ToRegister(instr->result());
+ Handle<Map> initial_map = instr->hydrogen()->constructor_initial_map();
+ int instance_size = initial_map->instance_size();
+
+ // TODO(3095996): Get rid of this. For now, we need to make the
+ // result register contain a valid pointer because it is already
+ // contained in the register pointer map.
+ __ mov(result, Operand::Zero());
+
+ PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters);
+ __ mov(r0, Operand(Smi::FromInt(instance_size)));
+ __ push(r0);
+ CallRuntimeFromDeferred(Runtime::kAllocateInNewSpace, 1, instr);
+ __ StoreToSafepointRegisterSlot(r0, result);
+}
+
+
void LCodeGen::DoAllocate(LAllocate* instr) {
class DeferredAllocate: public LDeferredCode {
public:
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