Implement a space filter for optimizing.
Heuristic-based. Currently only for enabling fugu user build.
Change-Id: I76e652bd3f00ed84a2a8ad69c7c2c0e24d74cd68
diff --git a/compiler/optimizing/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc
index b70f925..933a8a0 100644
--- a/compiler/optimizing/optimizing_compiler.cc
+++ b/compiler/optimizing/optimizing_compiler.cc
@@ -462,6 +462,16 @@
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,