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

src/compiler/js-inlining.cc

 // Copyright 2014 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.
 
 #include "src/compiler/js-inlining.h"
 
 #include "src/ast/ast-numbering.h"
 #include "src/ast/ast.h"
 #include "src/compilation-info.h"
 #include "src/compiler.h"
@@ skipping 51 matching lines @@
     return NodeProperties::GetFrameStateInput(call_);
   }
 
   int formal_arguments() {
     // Both, {JSCallFunction} and {JSCallConstruct}, have two extra inputs:
     //  - JSCallConstruct: Includes target function and new target.
     //  - JSCallFunction: Includes target function and receiver.
     return call_->op()->ValueInputCount() - 2;
   }
 
+  float frequency() const {
+    return (call_->opcode() == IrOpcode::kJSCallFunction)
+               ? CallFunctionParametersOf(call_->op()).frequency()
+               : CallConstructParametersOf(call_->op()).frequency();
+  }
+
  private:
   Node* call_;
 };
 
 Reduction JSInliner::InlineCall(Node* call, Node* new_target, Node* context,
                                 Node* frame_state, Node* start, Node* end,
                                 Node* exception_target,
                                 const NodeVector& uncaught_subcalls) {
   // The scheduler is smart enough to place our code; we just ensure {control}
   // becomes the control input of the start of the inlinee, and {effect} becomes
@@ skipping 430 matching lines @@
     LoopAssignmentAnalysis* loop_assignment =
         loop_assignment_analyzer.Analyze();
 
     // Run the type hint analyzer on the inlinee.
     TypeHintAnalyzer type_hint_analyzer(&zone);
     TypeHintAnalysis* type_hint_analysis =
         type_hint_analyzer.Analyze(handle(shared_info->code(), info.isolate()));
 
     // Run the AstGraphBuilder to create the subgraph.
     Graph::SubgraphScope scope(graph());
-    AstGraphBuilder graph_builder(&zone, &info, jsgraph(), loop_assignment,
-                                  type_hint_analysis);
+    AstGraphBuilder graph_builder(&zone, &info, jsgraph(), call.frequency(),
+                                  loop_assignment, type_hint_analysis);
     graph_builder.CreateGraph(false);
 
     // Extract the inlinee start/end nodes.
     start = graph()->start();
     end = graph()->end();
   }
 
   if (exception_target != nullptr) {
     // Find all uncaught 'calls' in the inlinee.
     AllNodes inlined_nodes(local_zone_, end, graph());
@@ skipping 127 matching lines @@
 
 CommonOperatorBuilder* JSInliner::common() const { return jsgraph()->common(); }
 
 SimplifiedOperatorBuilder* JSInliner::simplified() const {
   return jsgraph()->simplified();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8