[ast] Annotate Runtime ast nodes

Changes output from
CALL RUNTIME (context function) code = 0x3e9ea90a2049 at -1
to
CALL RUNTIME async_function_promise_create code = 0x3e9ea90a2049 at -1

This makes the ast more useful. I didn't annotate all the runtime calls,
only some for now. We can annotate others if necessary.

Review-Url: https://codereview.chromium.org/2654113002
Cr-Commit-Position: refs/heads/master@{#42671}

src/ast/ast.cc

@@ -29,6 +29,21 @@ namespace internal {
 
 #ifdef DEBUG
 
+static const char* NameForNativeContextIntrinsicIndex(uint32_t idx) {
+  switch (idx) {
+#define NATIVE_CONTEXT_FIELDS_IDX(NAME, Type, name) \
+  case Context::NAME:                               \
+    return #name;
+
+    NATIVE_CONTEXT_FIELDS(NATIVE_CONTEXT_FIELDS_IDX)
+
+    default:
+      break;
+  }
+
+  return "UnknownIntrinsicIndex";
+}
+
 void AstNode::Print() { Print(Isolate::Current()); }
 
 void AstNode::Print(Isolate* isolate) {
@@ -1064,5 +1079,13 @@ bool Literal::Match(void* literal1, void* literal2) {
          (x->IsNumber() && y->IsNumber() && x->AsNumber() == y->AsNumber());
 }
 
+const char* CallRuntime::debug_name() {
+#ifdef DEBUG
+  return NameForNativeContextIntrinsicIndex(context_index_);
+#else
+  return is_jsruntime() ? "(context function)" : function_->name;
+#endif  // DEBUG
+}
+
 }  // namespace internal
 }  // namespace v8

src/ast/ast.h

@@ -19,7 +19,6 @@
 #include "src/parsing/token.h"
 #include "src/runtime/runtime.h"
 #include "src/small-pointer-list.h"
-#include "src/utils.h"
 
 namespace v8 {
 namespace internal {
@@ -2055,10 +2054,7 @@ class CallRuntime final : public Expression {
 
   static int num_ids() { return parent_num_ids() + 1; }
   BailoutId CallId() { return BailoutId(local_id(0)); }
-
-  const char* debug_name() {
-    return is_jsruntime() ? "(context function)" : function_->name;
-  }
+  const char* debug_name();
 
  private:
   friend class AstNodeFactory;