thread isolate for files starting with 'b' and 'c'

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index 1fba20fa5b923790d9ac720a69f68f2da952157c..c791cb5df591ec755380a25c896ab88565cd53dc 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -845,7 +845,7 @@ static bool InstallFullCode(CompilationInfo* info) {
     // version of the function right away - unless the debugger is
     // active as it makes no sense to compile optimized code then.
     if (FLAG_always_opt &&
-        !Isolate::Current()->DebuggerHasBreakPoints()) {
+        !info->isolate()->DebuggerHasBreakPoints()) {
       CompilationInfoWithZone optimized(function);
       optimized.SetOptimizing(BailoutId::None());
       return Compiler::CompileLazy(&optimized);