[compiler][cleanup] Remove dead code

R=neis@chromium.org

Bug: v8:10506
Change-Id: I4cffa301fd306acc4da4375bc6f0729d363cc659
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2349307Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69340}

src/compiler/pipeline-statistics.cc

@@ -61,11 +61,9 @@ PipelineStatistics::PipelineStatistics(OptimizedCompilationInfo* info,
     : outer_zone_(info->zone()),
       zone_stats_(zone_stats),
       compilation_stats_(compilation_stats),
-      source_size_(0),
       phase_kind_name_(nullptr),
       phase_name_(nullptr) {
   if (info->has_shared_info()) {
-    source_size_ = static_cast<size_t>(info->shared_info()->SourceSize());
     std::unique_ptr<char[]> name = info->shared_info()->DebugName().ToCString();
     function_name_ = name.get();
   }
@@ -77,7 +75,7 @@ PipelineStatistics::~PipelineStatistics() {
   if (InPhaseKind()) EndPhaseKind();
   CompilationStatistics::BasicStats diff;
   total_stats_.End(this, &diff);
-  compilation_stats_->RecordTotalStats(source_size_, diff);
+  compilation_stats_->RecordTotalStats(diff);
 }
 
 

src/compiler/pipeline-statistics.h

@@ -63,7 +63,6 @@ class PipelineStatistics : public Malloced {
 
   // Stats for the entire compilation.
   CommonStats total_stats_;
-  size_t source_size_;
 
   // Stats for phase kind.
   const char* phase_kind_name_;

src/diagnostics/compilation-statistics.cc

@@ -40,11 +40,8 @@ void CompilationStatistics::RecordPhaseKindStats(const char* phase_kind_name,
   it->second.Accumulate(stats);
 }
 
-void CompilationStatistics::RecordTotalStats(size_t source_size,
-                                             const BasicStats& stats) {
+void CompilationStatistics::RecordTotalStats(const BasicStats& stats) {
   base::MutexGuard guard(&record_mutex_);
-
-  source_size += source_size;
   total_stats_.Accumulate(stats);
 }
 

src/diagnostics/compilation-statistics.h

@@ -48,7 +48,7 @@ class CompilationStatistics final : public Malloced {
   void RecordPhaseKindStats(const char* phase_kind_name,
                             const BasicStats& stats);
 
-  void RecordTotalStats(size_t source_size, const BasicStats& stats);
+  void RecordTotalStats(const BasicStats& stats);
 
  private:
   class TotalStats : public BasicStats {