[compiler] Generate all deopt entries upfront.

This is in order to avoid triggering the generation of deopt entries
later during code assembly.

R=jarin@chromium.org

Bug: v8:6048
Change-Id: I51fb508cfc5d715b6a5b2fded90b19c9f21d4d9f
Reviewed-on: https://chromium-review.googlesource.com/508789
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45426}

src/compiler/pipeline.cc

@@ -627,6 +627,11 @@ PipelineCompilationJob::Status PipelineCompilationJob::PrepareJobImpl() {
     return AbortOptimization(kGraphBuildingFailed);
   }
 
+  // Make sure that we have generated the maximal number of deopt entries.
+  // This is in order to avoid triggering the generation of deopt entries later
+  // during code assembly.
+  Deoptimizer::EnsureCodeForMaxDeoptimizationEntries(isolate());
+
   return SUCCEEDED;
 }
 

src/deoptimizer.cc

@@ -2337,6 +2337,12 @@ void Deoptimizer::EnsureCodeForDeoptimizationEntry(Isolate* isolate,
   data->deopt_entry_code_entries_[type] = entry_count;
 }
 
+void Deoptimizer::EnsureCodeForMaxDeoptimizationEntries(Isolate* isolate) {
+  EnsureCodeForDeoptimizationEntry(isolate, EAGER, kMaxNumberOfEntries - 1);
+  EnsureCodeForDeoptimizationEntry(isolate, LAZY, kMaxNumberOfEntries - 1);
+  EnsureCodeForDeoptimizationEntry(isolate, SOFT, kMaxNumberOfEntries - 1);
+}
+
 FrameDescription::FrameDescription(uint32_t frame_size, int parameter_count)
     : frame_size_(frame_size),
       parameter_count_(parameter_count),

src/deoptimizer.h

@@ -540,6 +540,7 @@ class Deoptimizer : public Malloced {
   static void EnsureCodeForDeoptimizationEntry(Isolate* isolate,
                                                BailoutType type,
                                                int max_entry_id);
+  static void EnsureCodeForMaxDeoptimizationEntries(Isolate* isolate);
 
   Isolate* isolate() const { return isolate_; }