From 88b45eef173406cb2b0684b5034cc173d9e3554e Mon Sep 17 00:00:00 2001 From: "hpayer@chromium.org" Date: Thu, 6 Feb 2014 11:27:08 +0000 Subject: [PATCH] Just calculate pretenuring ratio when needed. BUG= R=mvstanton@chromium.org Review URL: https://codereview.chromium.org/153863005 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19144 ce2b1a6d-e550-0410-aec6-3dcde31c8c00 --- src/objects-inl.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/src/objects-inl.h b/src/objects-inl.h index a0256fb..dbac0f4 100644 --- a/src/objects-inl.h +++ b/src/objects-inl.h @@ -1551,10 +1551,13 @@ inline bool AllocationSite::DigestPretenuringFeedback() { bool decision_changed = false; int create_count = memento_create_count(); int found_count = memento_found_count(); - double ratio = static_cast(found_count) / create_count; + bool minimum_mementos_created = create_count >= kPretenureMinimumCreated; + double ratio = + minimum_mementos_created || FLAG_trace_pretenuring_statistics ? + static_cast(found_count) / create_count : 0.0; PretenureFlag current_mode = GetPretenureMode(); - if (create_count >= kPretenureMinimumCreated) { + if (minimum_mementos_created) { PretenureDecision result = ratio >= kPretenureRatio ? kTenure : kDontTenure; -- 2.7.4