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

src/ia32/code-stubs-ia32.cc

Index: src/ia32/code-stubs-ia32.cc
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index 95c6287d1de98dbcc12eac776f9a531f51f76a5f..a45d3ed8681ffff55817e9f4b450579fa09593ef 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -1937,6 +1937,7 @@ static void GenerateRecordCallTarget(MacroAssembler* masm) {
   // edi : the function to call
   Isolate* isolate = masm->isolate();
   Label initialize, done, miss, megamorphic, not_array_function;
+  Label done_increment_count;
 
   // Load the cache state into ecx.
   __ mov(ecx, FieldOperand(ebx, edx, times_half_pointer_size,
@@ -1949,7 +1950,7 @@ static void GenerateRecordCallTarget(MacroAssembler* masm) {
   // type-feedback-vector.h).
   Label check_allocation_site;
   __ cmp(edi, FieldOperand(ecx, WeakCell::kValueOffset));
-  __ j(equal, &done, Label::kFar);
+  __ j(equal, &done_increment_count, Label::kFar);
   __ CompareRoot(ecx, Heap::kmegamorphic_symbolRootIndex);
   __ j(equal, &done, Label::kFar);
   __ CompareRoot(FieldOperand(ecx, HeapObject::kMapOffset),
@@ -1972,7 +1973,7 @@ static void GenerateRecordCallTarget(MacroAssembler* masm) {
   __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, ecx);
   __ cmp(edi, ecx);
   __ j(not_equal, &megamorphic);
-  __ jmp(&done, Label::kFar);
+  __ jmp(&done_increment_count, Label::kFar);
 
   __ bind(&miss);
 
@@ -1991,6 +1992,12 @@ static void GenerateRecordCallTarget(MacroAssembler* masm) {
   // An uninitialized cache is patched with the function or sentinel to
   // indicate the ElementsKind if function is the Array constructor.
   __ bind(&initialize);
+
+  // Initialize the call counter.
+  __ mov(FieldOperand(ebx, edx, times_half_pointer_size,
+                      FixedArray::kHeaderSize + kPointerSize),
+         Immediate(Smi::FromInt(ConstructICNexus::kCallCountIncrement)));
+
   // Make sure the function is the Array() function
   __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, ecx);
   __ cmp(edi, ecx);
@@ -2006,11 +2013,18 @@ static void GenerateRecordCallTarget(MacroAssembler* masm) {
   __ bind(&not_array_function);
   CreateWeakCellStub weak_cell_stub(isolate);
   CallStubInRecordCallTarget(masm, &weak_cell_stub);
+  __ jmp(&done);
+
+  __ bind(&done_increment_count);
+  __ add(FieldOperand(ebx, edx, times_half_pointer_size,
+                      FixedArray::kHeaderSize + kPointerSize),
+         Immediate(Smi::FromInt(ConstructICNexus::kCallCountIncrement)));
+
   __ bind(&done);
 }
 
 
-void CallConstructStub::Generate(MacroAssembler* masm) {
+void ConstructICStub::Generate(MacroAssembler* masm) {
   // eax : number of arguments
   // ebx : feedback vector
   // edx : slot in feedback vector (Smi, for RecordCallTarget)