Add compiler option for counting hotness in compiled code.

For eventually easier profiling of boot classpath and
system server.

bug: 30934496
Test: 674-hotness-compiled

Change-Id: I0f63c644527b74f6ef2649f481c2a1c731bb9f21

1 files changed, 6 insertions, 0 deletions

diff --git a/compiler/driver/compiler_options_map-inl.h b/compiler/driver/compiler_options_map-inl.h
index f97ab08600..3b18db09fc 100644
--- a/compiler/driver/compiler_options_map-inl.h
+++ b/compiler/driver/compiler_options_map-inl.h
@@ -77,6 +77,9 @@ inline bool ReadCompilerOptions(Base& map, CompilerOptions* options, std::string
   }
   map.AssignIfExists(Base::VerboseMethods, &options->verbose_methods_);
   options->deduplicate_code_ = map.GetOrDefault(Base::DeduplicateCode);
+  if (map.Exists(Base::CountHotnessInCompiledCode)) {
+    options->count_hotness_in_compiled_code_ = true;
+  }
 
   if (map.Exists(Base::DumpTimings)) {
     options->dump_timings_ = true;
@@ -137,6 +140,9 @@ inline void AddCompilerOptionsArgumentParserOptions(Builder& b) {
           .WithValueMap({{"false", false}, {"true", true}})
           .IntoKey(Map::DeduplicateCode)
 
+      .Define({"--count-hotness-in-compiled-code"})
+          .IntoKey(Map::CountHotnessInCompiledCode)
+
       .Define({"--dump-timings"})
           .IntoKey(Map::DumpTimings)