[tracing] Log detailed information via "v8.turbofan" category.

The details of the TurboFan pipeline stages are probably not relevant to
most users of the "disabled-by-default-v8.compile" category, so we now
log them to "disabled-by-default-v8.turbofan" category instead.

Bug: v8:8598, v8:9039
Change-Id: Ib451f163f74eb11ffbeb0dc6f2ee590208bd296b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1538135
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60455}

src/compiler/pipeline-statistics.cc

@@ -18,9 +18,9 @@ namespace compiler {
 namespace {
 
 // We log detailed phase information about the pipeline
-// in both the v8.compile and the v8.wasm categories.
-const char kTraceCategory[] =                    // --
-    TRACE_DISABLED_BY_DEFAULT("v8.compile") ","  // --
+// in both the v8.turbofan and the v8.wasm categories.
+const char kTraceCategory[] =                     // --
+    TRACE_DISABLED_BY_DEFAULT("v8.turbofan") ","  // --
     TRACE_DISABLED_BY_DEFAULT("v8.wasm");
 
 }  // namespace

src/compiler/pipeline.cc

@@ -796,7 +796,7 @@ PipelineStatistics* CreatePipelineStatistics(Handle<Script> script,
   PipelineStatistics* pipeline_statistics = nullptr;
 
   bool tracing_enabled;
-  TRACE_EVENT_CATEGORY_GROUP_ENABLED(TRACE_DISABLED_BY_DEFAULT("v8.compile"),
+  TRACE_EVENT_CATEGORY_GROUP_ENABLED(TRACE_DISABLED_BY_DEFAULT("v8.turbofan"),
                                      &tracing_enabled);
   if (tracing_enabled || FLAG_turbo_stats || FLAG_turbo_stats_nvp) {
     pipeline_statistics =