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Unified Diff: src/mips/code-stubs-mips.cc

Issue 145013010: MIPS: Turn FastNewContextStub into a HydrogenCodeStub. (Closed) Base URL: https://github.com/v8/v8.git@gbl
Patch Set: Created 6 years, 11 months ago
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Index: src/mips/code-stubs-mips.cc
diff --git a/src/mips/code-stubs-mips.cc b/src/mips/code-stubs-mips.cc
index 3bd381ab616da114fcaeca4bb1880ffed96cd5da..2fe6d69f95cdffd832efa40a67e9f828186969c5 100644
--- a/src/mips/code-stubs-mips.cc
+++ b/src/mips/code-stubs-mips.cc
@@ -50,6 +50,16 @@ void FastNewClosureStub::InitializeInterfaceDescriptor(
}
+void FastNewContextStub::InitializeInterfaceDescriptor(
+ Isolate* isolate,
+ CodeStubInterfaceDescriptor* descriptor) {
+ static Register registers[] = { a1 };
+ descriptor->register_param_count_ = 1;
+ descriptor->register_params_ = registers;
+ descriptor->deoptimization_handler_ = NULL;
+}
+
+
void ToNumberStub::InitializeInterfaceDescriptor(
Isolate* isolate,
CodeStubInterfaceDescriptor* descriptor) {
@@ -453,47 +463,6 @@ void HydrogenCodeStub::GenerateLightweightMiss(MacroAssembler* masm) {
}
-void FastNewContextStub::Generate(MacroAssembler* masm) {
- // Try to allocate the context in new space.
- Label gc;
- int length = slots_ + Context::MIN_CONTEXT_SLOTS;
-
- // Attempt to allocate the context in new space.
- __ Allocate(FixedArray::SizeFor(length), v0, a1, a2, &gc, TAG_OBJECT);
-
- // Load the function from the stack.
- __ lw(a3, MemOperand(sp, 0));
-
- // Set up the object header.
- __ LoadRoot(a1, Heap::kFunctionContextMapRootIndex);
- __ li(a2, Operand(Smi::FromInt(length)));
- __ sw(a2, FieldMemOperand(v0, FixedArray::kLengthOffset));
- __ sw(a1, FieldMemOperand(v0, HeapObject::kMapOffset));
-
- // Set up the fixed slots, copy the global object from the previous context.
- __ lw(a2, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
- __ li(a1, Operand(Smi::FromInt(0)));
- __ sw(a3, MemOperand(v0, Context::SlotOffset(Context::CLOSURE_INDEX)));
- __ sw(cp, MemOperand(v0, Context::SlotOffset(Context::PREVIOUS_INDEX)));
- __ sw(a1, MemOperand(v0, Context::SlotOffset(Context::EXTENSION_INDEX)));
- __ sw(a2, MemOperand(v0, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
-
- // Initialize the rest of the slots to undefined.
- __ LoadRoot(a1, Heap::kUndefinedValueRootIndex);
- for (int i = Context::MIN_CONTEXT_SLOTS; i < length; i++) {
- __ sw(a1, MemOperand(v0, Context::SlotOffset(i)));
- }
-
- // Remove the on-stack argument and return.
- __ mov(cp, v0);
- __ DropAndRet(1);
-
- // Need to collect. Call into runtime system.
- __ bind(&gc);
- __ TailCallRuntime(Runtime::kNewFunctionContext, 1, 1);
-}
-
-
void FastNewBlockContextStub::Generate(MacroAssembler* masm) {
// Stack layout on entry:
//
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