[Interpreter] Implements calls through CallICStub in the interpreter.

src/arm/code-stubs-arm.cc

Index: src/arm/code-stubs-arm.cc
diff --git a/src/arm/code-stubs-arm.cc b/src/arm/code-stubs-arm.cc
index 239eddd28efddd577ab0dd07e6425f6780f6ddb0..6b6268c7aa95d72cfd904335d5b7404eb0e6d140 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -2067,8 +2067,6 @@ void CallICStub::HandleArrayCase(MacroAssembler* masm, Label* miss) {
   __ cmp(r1, r5);
   __ b(ne, miss);
 
-  __ mov(r0, Operand(arg_count()));
-
   // Increment the call count for monomorphic function calls.
   __ add(r2, r2, Operand::PointerOffsetFromSmiKey(r3));
   __ add(r2, r2, Operand(FixedArray::kHeaderSize + kPointerSize));
@@ -2078,18 +2076,30 @@ void CallICStub::HandleArrayCase(MacroAssembler* masm, Label* miss) {
 
   __ mov(r2, r4);
   __ mov(r3, r1);
-  ArrayConstructorStub stub(masm->isolate(), arg_count());
-  __ TailCallStub(&stub);
+  if (argc_in_register()) {
+    // Pass a default ArgumentCountKey::Any since the argc is only available
+    // in r0. We do not have the actual count here.
+    ArrayConstructorStub stub(masm->isolate());
+    __ TailCallStub(&stub);
+  } else {
+    // arg_count() is expected in r0 if the arg_count() >= 2
+    // (ArgumentCountKey::MORE_THAN_ONE).
+    ArrayConstructorStub stub(masm->isolate(), arg_count());
+    __ TailCallStub(&stub);
+  }
 }
 
 
 void CallICStub::Generate(MacroAssembler* masm) {
+  // r0 - number of arguments if argc_in_register() is true
   // r1 - function
   // r3 - slot id (Smi)
   // r2 - vector
   Label extra_checks_or_miss, call, call_function;
-  int argc = arg_count();
-  ParameterCount actual(argc);
+  if (!argc_in_register()) {
+    int argc = arg_count();
+    __ mov(r0, Operand(argc));
+  }
 
   // The checks. First, does r1 match the recorded monomorphic target?
   __ add(r4, r2, Operand::PointerOffsetFromSmiKey(r3));
@@ -2125,7 +2135,6 @@ void CallICStub::Generate(MacroAssembler* masm) {
   __ str(r3, FieldMemOperand(r2, 0));
 
   __ bind(&call_function);
-  __ mov(r0, Operand(argc));
   __ Jump(masm->isolate()->builtins()->CallFunction(convert_mode(),
                                                     tail_call_mode()),
           RelocInfo::CODE_TARGET);
@@ -2165,7 +2174,6 @@ void CallICStub::Generate(MacroAssembler* masm) {
   __ str(ip, FieldMemOperand(r4, FixedArray::kHeaderSize));
 
   __ bind(&call);
-  __ mov(r0, Operand(argc));
   __ Jump(masm->isolate()->builtins()->Call(convert_mode(), tail_call_mode()),
           RelocInfo::CODE_TARGET);
 
@@ -2203,9 +2211,13 @@ void CallICStub::Generate(MacroAssembler* masm) {
   {
     FrameScope scope(masm, StackFrame::INTERNAL);
     CreateWeakCellStub create_stub(masm->isolate());
+    __ SmiTag(r0);
+    __ Push(r0);
     __ Push(r1);
     __ CallStub(&create_stub);
     __ Pop(r1);
+    __ Pop(r0);
+    __ SmiUntag(r0);
   }
 
   __ jmp(&call_function);
@@ -2222,6 +2234,10 @@ void CallICStub::Generate(MacroAssembler* masm) {
 void CallICStub::GenerateMiss(MacroAssembler* masm) {
   FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
 
+  // Store the number of arguments that is required later.
+  __ SmiTag(r0);
+  __ Push(r0);
+
   // Push the receiver and the function and feedback info.
   __ Push(r1, r2, r3);
 
@@ -2230,6 +2246,10 @@ void CallICStub::GenerateMiss(MacroAssembler* masm) {
 
   // Move result to edi and exit the internal frame.
   __ mov(r1, r0);
+
+  // Restore back the number of arguments to r0.
+  __ Pop(r0);
+  __ SmiUntag(r0);
 }