[turbofan] Collect invocation counts and compute relative call frequencies.

src/builtins/x64/builtins-x64.cc

Index: src/builtins/x64/builtins-x64.cc
diff --git a/src/builtins/x64/builtins-x64.cc b/src/builtins/x64/builtins-x64.cc
index ecdac09347d31e8df4c094422ec1ed05fb14f107..fa2f562feed76e3e660d4773b5cab7130bb36d0d 100644
--- a/src/builtins/x64/builtins-x64.cc
+++ b/src/builtins/x64/builtins-x64.cc
@@ -672,6 +672,15 @@ void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
   __ cmpp(rcx, FieldOperand(rax, SharedFunctionInfo::kCodeOffset));
   __ j(not_equal, &switch_to_different_code_kind);
 
+  // Increment invocation count for the function.
+  __ movp(rcx, FieldOperand(rdi, JSFunction::kLiteralsOffset));
+  __ movp(rcx, FieldOperand(rcx, LiteralsArray::kFeedbackVectorOffset));
+  __ SmiAddConstant(
+      FieldOperand(rcx,
+                   TypeFeedbackVector::kInvocationCountIndex * kPointerSize +
+                       TypeFeedbackVector::kHeaderSize),
+      Smi::FromInt(1));
+
   // Check function data field is actually a BytecodeArray object.
   if (FLAG_debug_code) {
     __ AssertNotSmi(kInterpreterBytecodeArrayRegister);