[turbofan] Support fast access to the current global object.

src/compiler/pipeline.cc

Index: src/compiler/pipeline.cc
diff --git a/src/compiler/pipeline.cc b/src/compiler/pipeline.cc
index 8f0e51d83159661eed40377c4b75577cc21b317b..aceedb4db237d6b07a11750e2825ec2f6e0ce798 100644
--- a/src/compiler/pipeline.cc
+++ b/src/compiler/pipeline.cc
@@ -37,7 +37,6 @@
 #include "src/compiler/js-create-lowering.h"
 #include "src/compiler/js-frame-specialization.h"
 #include "src/compiler/js-generic-lowering.h"
-#include "src/compiler/js-global-object-specialization.h"
 #include "src/compiler/js-inlining-heuristic.h"
 #include "src/compiler/js-intrinsic-lowering.h"
 #include "src/compiler/js-native-context-specialization.h"
@@ -790,9 +789,6 @@ struct InliningPhase {
             : MaybeHandle<Context>());
     JSFrameSpecialization frame_specialization(
         &graph_reducer, data->info()->osr_frame(), data->jsgraph());
-    JSGlobalObjectSpecialization global_object_specialization(
-        &graph_reducer, data->jsgraph(), data->global_object(),
-        data->info()->dependencies());
     JSNativeContextSpecialization::Flags flags =
         JSNativeContextSpecialization::kNoFlags;
     if (data->info()->is_accessor_inlining_enabled()) {
@@ -822,9 +818,6 @@ struct InliningPhase {
     if (data->info()->is_frame_specializing()) {
       AddReducer(data, &graph_reducer, &frame_specialization);
     }
-    if (data->info()->is_deoptimization_enabled()) {
-      AddReducer(data, &graph_reducer, &global_object_specialization);
-    }
     AddReducer(data, &graph_reducer, &native_context_specialization);
     AddReducer(data, &graph_reducer, &context_specialization);
     AddReducer(data, &graph_reducer, &intrinsic_lowering);