When running with --always-opt, don't deoptimize named loads with uninitialized type feedback.

This avoids tests taking too long because of repeated deoptimizations.
Review URL: https://chromiumcodereview.appspot.com/9812004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11100 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/hydrogen.cc

@@ -4523,7 +4523,7 @@ HLoadNamedField* HGraphBuilder::BuildLoadNamedField(HValue* object,
 
 HInstruction* HGraphBuilder::BuildLoadNamedGeneric(HValue* obj,
                                                    Property* expr) {
-  if (expr->IsUninitialized()) {
+  if (expr->IsUninitialized() && !FLAG_always_opt) {
     AddInstruction(new(zone()) HSoftDeoptimize);
     current_block()->MarkAsDeoptimizing();
   }

test/cctest/test-log-stack-tracer.cc

@@ -277,9 +277,7 @@ static void CreateTraceCallerFunction(const char* func_name,
 TEST(CFromJSStackTrace) {
   // BUG(1303) Inlining of JSFuncDoTrace() in JSTrace below breaks this test.
   i::FLAG_use_inlining = false;
-  // This test does not work with --always-opt because we don't replace the code
-  // in the JSFunction at deoptimization in that case.
-  i::FLAG_always_opt = false;
+
   TickSample sample;
   InitTraceEnv(&sample);