Return-Path: X-Original-To: apmail-hive-issues-archive@minotaur.apache.org Delivered-To: apmail-hive-issues-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id B202318125 for ; Fri, 7 Aug 2015 06:00:58 +0000 (UTC) Received: (qmail 68132 invoked by uid 500); 7 Aug 2015 06:00:52 -0000 Delivered-To: apmail-hive-issues-archive@hive.apache.org Received: (qmail 67700 invoked by uid 500); 7 Aug 2015 06:00:52 -0000 Mailing-List: contact issues-help@hive.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@hive.apache.org Delivered-To: mailing list issues@hive.apache.org Received: (qmail 67595 invoked by uid 99); 7 Aug 2015 06:00:51 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 07 Aug 2015 06:00:51 +0000 Date: Fri, 7 Aug 2015 06:00:51 +0000 (UTC) From: "Gopal V (JIRA)" To: issues@hive.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HIVE-11457) Vectorization: Improve SIMD JIT in GenVectorCode StringExpr instrinsics MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/HIVE-11457?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Gopal V updated HIVE-11457: --------------------------- Attachment: HIVE-11457.1.patch Reattach for tests. > Vectorization: Improve SIMD JIT in GenVectorCode StringExpr instrinsics > ------------------------------------------------------------------------ > > Key: HIVE-11457 > URL: https://issues.apache.org/jira/browse/HIVE-11457 > Project: Hive > Issue Type: Improvement > Components: Vectorization > Affects Versions: 2.0.0 > Reporter: Gopal V > Assignee: Gopal V > Fix For: 2.0.0 > > Attachments: HIVE-11457.1.patch, HIVE-11457.1.patch, string-intrinsic-sse.png > > > With HIVE-11406, the Vectorization codegen generates a new and specialized fast-path for equality (and non equality), which removed the ordering and comparison constraints in the old codepath. > The equality operation can be much more pipeline and cache line efficient by keeping on comparing even when an inequality has been detected. > Optimize the single loop into a pair of loops, to allow the Vectorization codegen to use tighter loops that the JIT superword optimization can understand. > !string-intrinsic-sse.png! -- This message was sent by Atlassian JIRA (v6.3.4#6332)