[stubs] Also port the CallICStub to CSA.

src/arm64/code-stubs-arm64.cc

 // Copyright 2013 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.
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/code-stubs.h"
 #include "src/api-arguments.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 1953 matching lines @@
   __ Ldr(x4, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset));
   __ Ldr(x4, FieldMemOperand(x4, SharedFunctionInfo::kConstructStubOffset));
   __ Add(x4, x4, Code::kHeaderSize - kHeapObjectTag);
   __ Br(x4);
 
   __ Bind(&non_function);
   __ Mov(x3, function);
   __ Jump(isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET);
 }
 
-// Note: feedback_vector and slot are clobbered after the call.
-static void IncrementCallCount(MacroAssembler* masm, Register feedback_vector,
-                               Register slot) {
-  __ Add(feedback_vector, feedback_vector,
-         Operand::UntagSmiAndScale(slot, kPointerSizeLog2));
-  __ Add(feedback_vector, feedback_vector,
-         Operand(FixedArray::kHeaderSize + kPointerSize));
-  __ Ldr(slot, FieldMemOperand(feedback_vector, 0));
-  __ Add(slot, slot, Operand(Smi::FromInt(1)));
-  __ Str(slot, FieldMemOperand(feedback_vector, 0));
-}
-
-void CallICStub::HandleArrayCase(MacroAssembler* masm, Label* miss) {
-  // x0 - number of arguments
-  // x1 - function
-  // x3 - slot id
-  // x2 - vector
-  // x4 - allocation site (loaded from vector[slot])
-  Register function = x1;
-  Register feedback_vector = x2;
-  Register index = x3;
-  Register allocation_site = x4;
-  Register scratch = x5;
-
-  __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, scratch);
-  __ Cmp(function, scratch);
-  __ B(ne, miss);
-
-  // Increment the call count for monomorphic function calls.
-  IncrementCallCount(masm, feedback_vector, index);
-
-  // Set up arguments for the array constructor stub.
-  Register allocation_site_arg = feedback_vector;
-  Register new_target_arg = index;
-  __ Mov(allocation_site_arg, allocation_site);
-  __ Mov(new_target_arg, function);
-  ArrayConstructorStub stub(masm->isolate());
-  __ TailCallStub(&stub);
-}
-
-
-void CallICStub::Generate(MacroAssembler* masm) {
-  ASM_LOCATION("CallICStub");
-
-  // x0 - number of arguments
-  // x1 - function
-  // x3 - slot id (Smi)
-  // x2 - vector
-  Label extra_checks_or_miss, call, call_function, call_count_incremented;
-
-  Register function = x1;
-  Register feedback_vector = x2;
-  Register index = x3;
-
-  // The checks. First, does x1 match the recorded monomorphic target?
-  __ Add(x4, feedback_vector,
-         Operand::UntagSmiAndScale(index, kPointerSizeLog2));
-  __ Ldr(x4, FieldMemOperand(x4, FixedArray::kHeaderSize));
-
-  // We don't know that we have a weak cell. We might have a private symbol
-  // or an AllocationSite, but the memory is safe to examine.
-  // AllocationSite::kTransitionInfoOffset - contains a Smi or pointer to
-  // FixedArray.
-  // WeakCell::kValueOffset - contains a JSFunction or Smi(0)
-  // Symbol::kHashFieldSlot - if the low bit is 1, then the hash is not
-  // computed, meaning that it can't appear to be a pointer. If the low bit is
-  // 0, then hash is computed, but the 0 bit prevents the field from appearing
-  // to be a pointer.
-  STATIC_ASSERT(WeakCell::kSize >= kPointerSize);
-  STATIC_ASSERT(AllocationSite::kTransitionInfoOffset ==
-                    WeakCell::kValueOffset &&
-                WeakCell::kValueOffset == Symbol::kHashFieldSlot);
-
-  __ Ldr(x5, FieldMemOperand(x4, WeakCell::kValueOffset));
-  __ Cmp(x5, function);
-  __ B(ne, &extra_checks_or_miss);
-
-  // The compare above could have been a SMI/SMI comparison. Guard against this
-  // convincing us that we have a monomorphic JSFunction.
-  __ JumpIfSmi(function, &extra_checks_or_miss);
-
-  __ Bind(&call_function);
-
-  // Increment the call count for monomorphic function calls.
-  IncrementCallCount(masm, feedback_vector, index);
-
-  __ Jump(masm->isolate()->builtins()->CallFunction(convert_mode(),
-                                                    tail_call_mode()),
-          RelocInfo::CODE_TARGET);
-
-  __ bind(&extra_checks_or_miss);
-  Label uninitialized, miss, not_allocation_site;
-
-  __ JumpIfRoot(x4, Heap::kmegamorphic_symbolRootIndex, &call);
-
-  __ Ldr(x5, FieldMemOperand(x4, HeapObject::kMapOffset));
-  __ JumpIfNotRoot(x5, Heap::kAllocationSiteMapRootIndex, &not_allocation_site);
-
-  HandleArrayCase(masm, &miss);
-
-  __ bind(&not_allocation_site);
-
-  // The following cases attempt to handle MISS cases without going to the
-  // runtime.
-  if (FLAG_trace_ic) {
-    __ jmp(&miss);
-  }
-
-  // TODO(mvstanton): the code below is effectively disabled. Investigate.
-  __ JumpIfRoot(x4, Heap::kuninitialized_symbolRootIndex, &miss);
-
-  // We are going megamorphic. If the feedback is a JSFunction, it is fine
-  // to handle it here. More complex cases are dealt with in the runtime.
-  __ AssertNotSmi(x4);
-  __ JumpIfNotObjectType(x4, x5, x5, JS_FUNCTION_TYPE, &miss);
-  __ Add(x4, feedback_vector,
-         Operand::UntagSmiAndScale(index, kPointerSizeLog2));
-  __ LoadRoot(x5, Heap::kmegamorphic_symbolRootIndex);
-  __ Str(x5, FieldMemOperand(x4, FixedArray::kHeaderSize));
-
-  __ Bind(&call);
-
-  // Increment the call count for megamorphic function calls.
-  IncrementCallCount(masm, feedback_vector, index);
-
-  __ Bind(&call_count_incremented);
-  __ Jump(masm->isolate()->builtins()->Call(convert_mode(), tail_call_mode()),
-          RelocInfo::CODE_TARGET);
-
-  __ bind(&uninitialized);
-
-  // We are going monomorphic, provided we actually have a JSFunction.
-  __ JumpIfSmi(function, &miss);
-
-  // Goto miss case if we do not have a function.
-  __ JumpIfNotObjectType(function, x5, x5, JS_FUNCTION_TYPE, &miss);
-
-  // Make sure the function is not the Array() function, which requires special
-  // behavior on MISS.
-  __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, x5);
-  __ Cmp(function, x5);
-  __ B(eq, &miss);
-
-  // Make sure the function belongs to the same native context.
-  __ Ldr(x4, FieldMemOperand(function, JSFunction::kContextOffset));
-  __ Ldr(x4, ContextMemOperand(x4, Context::NATIVE_CONTEXT_INDEX));
-  __ Ldr(x5, NativeContextMemOperand());
-  __ Cmp(x4, x5);
-  __ B(ne, &miss);
-
-  // Store the function. Use a stub since we need a frame for allocation.
-  // x2 - vector
-  // x3 - slot
-  // x1 - function
-  // x0 - number of arguments
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    CreateWeakCellStub create_stub(masm->isolate());
-    __ SmiTag(x0);
-    __ Push(x0);
-    __ Push(feedback_vector, index);
-
-    __ Push(cp, function);
-    __ CallStub(&create_stub);
-    __ Pop(cp, function);
-
-    __ Pop(feedback_vector, index);
-    __ Pop(x0);
-    __ SmiUntag(x0);
-  }
-
-  __ B(&call_function);
-
-  // We are here because tracing is on or we encountered a MISS case we can't
-  // handle here.
-  __ bind(&miss);
-  GenerateMiss(masm);
-
-  // The runtime increments the call count in the vector for us.
-  __ B(&call_count_incremented);
-}
-
-
-void CallICStub::GenerateMiss(MacroAssembler* masm) {
-  ASM_LOCATION("CallICStub[Miss]");
-
-  FrameScope scope(masm, StackFrame::INTERNAL);
-
-  // Preserve the number of arguments as Smi.
-  __ SmiTag(x0);
-
-  // Push the receiver and the function and feedback info.
-  __ Push(x0, x1, x2, x3);
-
-  // Call the entry.
-  __ CallRuntime(Runtime::kCallIC_Miss);
-
-  // Move result to edi and exit the internal frame.
-  __ Mov(x1, x0);
-
-  // Restore number of arguments.
-  __ Pop(x0);
-  __ SmiUntag(x0);
-}
-
-
 void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) {
   // If the receiver is a smi trigger the non-string case.
   if (check_mode_ == RECEIVER_IS_UNKNOWN) {
     __ JumpIfSmi(object_, receiver_not_string_);
 
     // Fetch the instance type of the receiver into result register.
     __ Ldr(result_, FieldMemOperand(object_, HeapObject::kMapOffset));
     __ Ldrb(result_, FieldMemOperand(result_, Map::kInstanceTypeOffset));
 
     // If the receiver is not a string trigger the non-string case.
@@ skipping 2282 matching lines @@
                            kStackUnwindSpace, NULL, spill_offset,
                            return_value_operand, NULL);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64