[turbofan] Call frequencies for JSCallFunction and JSCallConstruct.

src/compiler/ast-graph-builder.h

Index: src/compiler/ast-graph-builder.h
diff --git a/src/compiler/ast-graph-builder.h b/src/compiler/ast-graph-builder.h
index db254314a38aa638bf5cd49c539dfcc788bb1e06..2a40453bbc43e6b2252ed17fa2c6dbb1060df607 100644
--- a/src/compiler/ast-graph-builder.h
+++ b/src/compiler/ast-graph-builder.h
@@ -264,6 +264,9 @@ class AstGraphBuilder : public AstVisitor<AstGraphBuilder> {
   uint32_t ComputeBitsetForDynamicGlobal(Variable* variable);
   uint32_t ComputeBitsetForDynamicContext(Variable* variable);
 
+  // Computes the frequency for JSCallFunction and JSCallConstruct nodes.
+  float ComputeCallFrequency(FeedbackVectorSlot slot) const;
+
   // ===========================================================================
   // The following build methods all generate graph fragments and return one
   // resulting node. The operand stack height remains the same, variables and