2 files changed, 12 insertions, 0 deletions
diff --git a/compiler/optimizing/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc
index b70f9252ae..933a8a005c 100644
--- a/compiler/optimizing/optimizing_compiler.cc
+++ b/compiler/optimizing/optimizing_compiler.cc
@@ -462,6 +462,16 @@ CompiledMethod* OptimizingCompiler::TryCompile(const DexFile::CodeItem* code_ite
     return nullptr;
   }
 
+  // Implementation of the space filter: do not compile a code item whose size in
+  // code units is bigger than 256.
+  static constexpr size_t kSpaceFilterOptimizingThreshold = 256;
+  const CompilerOptions& compiler_options = compiler_driver->GetCompilerOptions();
+  if ((compiler_options.GetCompilerFilter() == CompilerOptions::kSpace)
+      && (code_item->insns_size_in_code_units_ > kSpaceFilterOptimizingThreshold)) {
+    compilation_stats_.RecordStat(MethodCompilationStat::kNotCompiledSpaceFilter);
+    return nullptr;
+  }
+
   DexCompilationUnit dex_compilation_unit(
     nullptr, class_loader, art::Runtime::Current()->GetClassLinker(), dex_file, code_item,
     class_def_idx, method_idx, access_flags,
diff --git a/compiler/optimizing/optimizing_compiler_stats.h b/compiler/optimizing/optimizing_compiler_stats.h
index 3ebf0f8cd2..22ec2a5167 100644
--- a/compiler/optimizing/optimizing_compiler_stats.h
+++ b/compiler/optimizing/optimizing_compiler_stats.h
@@ -38,6 +38,7 @@ enum MethodCompilationStat {
   kNotCompiledUnresolvedMethod,
   kNotCompiledUnresolvedField,
   kNotCompiledNonSequentialRegPair,
+  kNotCompiledSpaceFilter,
   kNotOptimizedTryCatch,
   kNotOptimizedDisabled,
   kNotCompiledCantAccesType,
@@ -96,6 +97,7 @@ class OptimizingCompilerStats {
       case kNotOptimizedDisabled : return "kNotOptimizedDisabled";
       case kNotOptimizedTryCatch : return "kNotOptimizedTryCatch";
       case kNotCompiledCantAccesType : return "kNotCompiledCantAccesType";
+      case kNotCompiledSpaceFilter : return "kNotCompiledSpaceFilter";
       case kNotOptimizedRegisterAllocator : return "kNotOptimizedRegisterAllocator";
       case kNotCompiledUnhandledInstruction : return "kNotCompiledUnhandledInstruction";
       case kRemovedCheckedCast: return "kRemovedCheckedCast";