[turbolizer] Detect in-place updates of nodes

..and display them in the extended node title (on hover).

Notry: true
Bug: v8:7327
Change-Id: Ic9cd6207269686edb42ecf1bee8f7ef7b6caa035
Reviewed-on: https://chromium-review.googlesource.com/c/1407054
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58783}

tools/turbolizer/src/node-label.ts

@@ -24,6 +24,7 @@ export class NodeLabel {
   control: boolean;
   opinfo: string;
   type: string;
+  inplaceUpdatePhase: string;
 
   constructor(id: number, label: string, title: string, live: boolean, properties: string, sourcePosition: any, origin: any, opcode: string, control: boolean, opinfo: string, type: string) {
     this.id = id;
@@ -37,6 +38,7 @@ export class NodeLabel {
     this.control = control;
     this.opinfo = opinfo;
     this.type = type;
+    this.inplaceUpdatePhase = null;
   }
 
   equals(that?: NodeLabel) {
@@ -64,6 +66,9 @@ export class NodeLabel {
     if (this.origin) {
       title += `\nOrigin: ${formatOrigin(this.origin)}`;
     }
+    if (this.inplaceUpdatePhase) {
+      title += `\nInplace update in phase: ${this.inplaceUpdatePhase}`;
+    }
     return title;
   }
 
@@ -75,4 +80,7 @@ export class NodeLabel {
     return result;
   }
 
+  setInplaceUpdatePhase(name: string): any {
+    this.inplaceUpdatePhase = name;
+  }
 }

tools/turbolizer/src/source-resolver.ts

@@ -488,6 +488,9 @@ export class SourceResolver {
         n.opinfo, n.type);
       const previous = nodeLabelMap[label.id];
       if (!label.equals(previous)) {
+        if (previous != undefined) {
+          label.setInplaceUpdatePhase(phase.name);
+        }
         nodeLabelMap[label.id] = label;
       }
       n.nodeLabel = nodeLabelMap[label.id];