[stubs] Also port the CallICStub to CSA.

src/mips/code-stubs-mips.cc

 // Copyright 2012 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_MIPS
 
 #include "src/code-stubs.h"
 #include "src/api-arguments.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 1875 matching lines @@
   __ lw(t0, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
   __ lw(t0, FieldMemOperand(t0, SharedFunctionInfo::kConstructStubOffset));
   __ Addu(at, t0, Operand(Code::kHeaderSize - kHeapObjectTag));
   __ Jump(at);
 
   __ bind(&non_function);
   __ mov(a3, a1);
   __ 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) {
-  __ Lsa(at, feedback_vector, slot, kPointerSizeLog2 - kSmiTagSize);
-  __ lw(slot, FieldMemOperand(at, FixedArray::kHeaderSize + kPointerSize));
-  __ Addu(slot, slot, Operand(Smi::FromInt(1)));
-  __ sw(slot, FieldMemOperand(at, FixedArray::kHeaderSize + kPointerSize));
-}
-
-void CallICStub::HandleArrayCase(MacroAssembler* masm, Label* miss) {
-  // a0 - number of arguments
-  // a1 - function
-  // a3 - slot id
-  // a2 - vector
-  // t0 - loaded from vector[slot]
-  __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, at);
-  __ Branch(miss, ne, a1, Operand(at));
-
-  // Increment the call count for monomorphic function calls.
-  IncrementCallCount(masm, a2, a3);
-
-  __ mov(a2, t0);
-  __ mov(a3, a1);
-  ArrayConstructorStub stub(masm->isolate());
-  __ TailCallStub(&stub);
-}
-
-
-void CallICStub::Generate(MacroAssembler* masm) {
-  // a0 - number of arguments
-  // a1 - function
-  // a3 - slot id (Smi)
-  // a2 - vector
-  Label extra_checks_or_miss, call, call_function, call_count_incremented;
-
-  // The checks. First, does r1 match the recorded monomorphic target?
-  __ Lsa(t0, a2, a3, kPointerSizeLog2 - kSmiTagSize);
-  __ lw(t0, FieldMemOperand(t0, 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);
-
-  __ lw(t1, FieldMemOperand(t0, WeakCell::kValueOffset));
-  __ Branch(&extra_checks_or_miss, ne, a1, Operand(t1));
-
-  // The compare above could have been a SMI/SMI comparison. Guard against this
-  // convincing us that we have a monomorphic JSFunction.
-  __ JumpIfSmi(a1, &extra_checks_or_miss);
-
-  __ bind(&call_function);
-
-  // Increment the call count for monomorphic function calls.
-  IncrementCallCount(masm, a2, a3);
-
-  __ Jump(masm->isolate()->builtins()->CallFunction(convert_mode(),
-                                                    tail_call_mode()),
-          RelocInfo::CODE_TARGET, al, zero_reg, Operand(zero_reg));
-
-  __ bind(&extra_checks_or_miss);
-  Label uninitialized, miss, not_allocation_site;
-
-  __ LoadRoot(at, Heap::kmegamorphic_symbolRootIndex);
-  __ Branch(&call, eq, t0, Operand(at));
-
-  // Verify that t0 contains an AllocationSite
-  __ lw(t1, FieldMemOperand(t0, HeapObject::kMapOffset));
-  __ LoadRoot(at, Heap::kAllocationSiteMapRootIndex);
-  __ Branch(&not_allocation_site, ne, t1, Operand(at));
-
-  HandleArrayCase(masm, &miss);
-
-  __ bind(&not_allocation_site);
-
-  // The following cases attempt to handle MISS cases without going to the
-  // runtime.
-  if (FLAG_trace_ic) {
-    __ Branch(&miss);
-  }
-
-  __ LoadRoot(at, Heap::kuninitialized_symbolRootIndex);
-  __ Branch(&uninitialized, eq, t0, Operand(at));
-
-  // 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(t0);
-  __ GetObjectType(t0, t1, t1);
-  __ Branch(&miss, ne, t1, Operand(JS_FUNCTION_TYPE));
-  __ Lsa(t0, a2, a3, kPointerSizeLog2 - kSmiTagSize);
-  __ LoadRoot(at, Heap::kmegamorphic_symbolRootIndex);
-  __ sw(at, FieldMemOperand(t0, FixedArray::kHeaderSize));
-
-  __ bind(&call);
-  IncrementCallCount(masm, a2, a3);
-
-  __ bind(&call_count_incremented);
-
-  __ Jump(masm->isolate()->builtins()->Call(convert_mode(), tail_call_mode()),
-          RelocInfo::CODE_TARGET, al, zero_reg, Operand(zero_reg));
-
-  __ bind(&uninitialized);
-
-  // We are going monomorphic, provided we actually have a JSFunction.
-  __ JumpIfSmi(a1, &miss);
-
-  // Goto miss case if we do not have a function.
-  __ GetObjectType(a1, t0, t0);
-  __ Branch(&miss, ne, t0, Operand(JS_FUNCTION_TYPE));
-
-  // Make sure the function is not the Array() function, which requires special
-  // behavior on MISS.
-  __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, t0);
-  __ Branch(&miss, eq, a1, Operand(t0));
-
-  // Make sure the function belongs to the same native context.
-  __ lw(t0, FieldMemOperand(a1, JSFunction::kContextOffset));
-  __ lw(t0, ContextMemOperand(t0, Context::NATIVE_CONTEXT_INDEX));
-  __ lw(t1, NativeContextMemOperand());
-  __ Branch(&miss, ne, t0, Operand(t1));
-
-  // Store the function. Use a stub since we need a frame for allocation.
-  // a2 - vector
-  // a3 - slot
-  // a1 - function
-  {
-    FrameScope scope(masm, StackFrame::INTERNAL);
-    CreateWeakCellStub create_stub(masm->isolate());
-    __ SmiTag(a0);
-    __ Push(a0);
-    __ Push(a2, a3);
-    __ Push(cp, a1);
-    __ CallStub(&create_stub);
-    __ Pop(cp, a1);
-    __ Pop(a2, a3);
-    __ Pop(a0);
-    __ SmiUntag(a0);
-  }
-
-  __ Branch(&call_function);
-
-  // We are here because tracing is on or we encountered a MISS case we can't
-  // handle here.
-  __ bind(&miss);
-  GenerateMiss(masm);
-
-  __ Branch(&call_count_incremented);
-}
-
-
-void CallICStub::GenerateMiss(MacroAssembler* masm) {
-  FrameScope scope(masm, StackFrame::INTERNAL);
-
-  // Preserve the number of arguments as Smi.
-  __ SmiTag(a0);
-  __ Push(a0);
-
-  // Push the receiver and the function and feedback info.
-  __ Push(a1, a2, a3);
-
-  // Call the entry.
-  __ CallRuntime(Runtime::kCallIC_Miss);
-
-  // Move result to a1 and exit the internal frame.
-  __ mov(a1, v0);
-
-  // Restore number of arguments.
-  __ Pop(a0);
-  __ SmiUntag(a0);
-}
-
-
 // StringCharCodeAtGenerator.
 void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) {
   DCHECK(!t0.is(index_));
   DCHECK(!t0.is(result_));
   DCHECK(!t0.is(object_));
   if (check_mode_ == RECEIVER_IS_UNKNOWN) {
     // If the receiver is a smi trigger the non-string case.
     __ JumpIfSmi(object_, receiver_not_string_);
 
     // Fetch the instance type of the receiver into result register.
@@ skipping 2199 matching lines @@
                            kStackUnwindSpace, kInvalidStackOffset,
                            return_value_operand, NULL);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS