Provide call counts for constructor calls, surface them as a vector IC.

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 b9e60a54e127b7811f2a5f11c2538c3a4072efe9..0fa8be6869cece6aac3588dc684d76e078e6f5fa 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -2286,6 +2286,7 @@ static void GenerateRecordCallTarget(MacroAssembler* masm) {
   // r2 : feedback vector
   // r3 : slot in feedback vector (Smi)
   Label initialize, done, miss, megamorphic, not_array_function;
+  Label done_increment_count;
 
   DCHECK_EQ(*TypeFeedbackVector::MegamorphicSentinel(masm->isolate()),
             masm->isolate()->heap()->megamorphic_symbol());
@@ -2305,7 +2306,7 @@ static void GenerateRecordCallTarget(MacroAssembler* masm) {
   Register weak_value = r9;
   __ ldr(weak_value, FieldMemOperand(r5, WeakCell::kValueOffset));
   __ cmp(r1, weak_value);
-  __ b(eq, &done);
+  __ b(eq, &done_increment_count);
   __ CompareRoot(r5, Heap::kmegamorphic_symbolRootIndex);
   __ b(eq, &done);
   __ ldr(feedback_map, FieldMemOperand(r5, HeapObject::kMapOffset));
@@ -2328,7 +2329,7 @@ static void GenerateRecordCallTarget(MacroAssembler* masm) {
   __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, r5);
   __ cmp(r1, r5);
   __ b(ne, &megamorphic);
-  __ jmp(&done);
+  __ jmp(&done_increment_count);
 
   __ bind(&miss);
 
@@ -2347,6 +2348,11 @@ static void GenerateRecordCallTarget(MacroAssembler* masm) {
   // An uninitialized cache is patched with the function
   __ bind(&initialize);
 
+  // Initialize the call counter.
+  __ Move(r5, Operand(Smi::FromInt(CallICNexus::kCallCountIncrement)));
+  __ add(r4, r2, Operand::PointerOffsetFromSmiKey(r3));
+  __ str(r5, FieldMemOperand(r4, FixedArray::kHeaderSize + kPointerSize));
+
   // Make sure the function is the Array() function
   __ LoadNativeContextSlot(Context::ARRAY_FUNCTION_INDEX, r5);
   __ cmp(r1, r5);
@@ -2362,11 +2368,20 @@ static void GenerateRecordCallTarget(MacroAssembler* masm) {
   __ bind(&not_array_function);
   CreateWeakCellStub weak_cell_stub(masm->isolate());
   CallStubInRecordCallTarget(masm, &weak_cell_stub);
+  __ b(&done);
+
+  __ bind(&done_increment_count);
+  __ add(r4, r2, Operand::PointerOffsetFromSmiKey(r3));
+  __ add(r4, r4, Operand(FixedArray::kHeaderSize + kPointerSize));
+  __ ldr(r5, FieldMemOperand(r4, 0));
+  __ add(r5, r5, Operand(Smi::FromInt(CallICNexus::kCallCountIncrement)));
+  __ str(r5, FieldMemOperand(r4, 0));
+
   __ bind(&done);
 }
 
 
-void CallConstructStub::Generate(MacroAssembler* masm) {
+void ConstructICStub::Generate(MacroAssembler* masm) {
   // r0 : number of arguments
   // r1 : the function to call
   // r2 : feedback vector