Avoid pre-aging when debugger is active

src/ia32/macro-assembler-ia32.cc

Index: src/ia32/macro-assembler-ia32.cc
diff --git a/src/ia32/macro-assembler-ia32.cc b/src/ia32/macro-assembler-ia32.cc
index ed69fd07686f8d1df9287782fc9f40459744a420..2d35b5992bbbbc3da6ded86c1cd041cc49afe672 100644
--- a/src/ia32/macro-assembler-ia32.cc
+++ b/src/ia32/macro-assembler-ia32.cc
@@ -33,6 +33,7 @@
 #include "codegen.h"
 #include "cpu-profiler.h"
 #include "debug.h"
+#include "isolate-inl.h"
 #include "runtime.h"
 #include "serialize.h"
 
@@ -1022,7 +1023,8 @@ void MacroAssembler::Prologue(PrologueFrameMode frame_mode) {
   } else {
     PredictableCodeSizeScope predictible_code_size_scope(this,
         kNoCodeAgeSequenceLength);
-    if (FLAG_optimize_for_size && FLAG_age_code) {
+    if (FLAG_optimize_for_size && FLAG_age_code &&
+        !isolate()->IsDebuggerActive()) {
         // Pre-age the code.
       call(isolate()->builtins()->MarkCodeAsExecutedOnce(),
           RelocInfo::CODE_AGE_SEQUENCE);