From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 7891) id 756AF3857731; Tue, 29 Aug 2023 04:33:10 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 756AF3857731 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1693283590; bh=W/1qkpHy1QTitBgc7Cv8+dWtyUx3Vd48CCOwTutTpI8=; h=From:To:Subject:Date:From; b=hRKRCPmYgcZ7W9ct8vuDLYcvZoawK2rjqKVr94U7OlIGdmsSYSYqv8kn9JMk0P8Qp UqYZ92WC1lzr9SYSioZIEEUZdmLKNG7bonssKm+XKhNSTJv6sGQaMpdyiIRl8pLnKI 1/U8SXQ2UZRU1XW4oFjYG76fy/KSmTEwn+tHJhaQ= Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Yinyu Cai To: glibc-cvs@sourceware.org Subject: [glibc] LoongArch: Micro-optimize LD_PCREL X-Act-Checkin: glibc X-Git-Author: Xi Ruoyao X-Git-Refname: refs/heads/master X-Git-Oldrev: aac842d0edbe53a150ab57a4f776cb50294b6388 X-Git-Newrev: 3efa26749e4d28768558330353dc15c6f325ed4e Message-Id: <20230829043310.756AF3857731@sourceware.org> Date: Tue, 29 Aug 2023 04:33:10 +0000 (GMT) List-Id: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3efa26749e4d28768558330353dc15c6f325ed4e commit 3efa26749e4d28768558330353dc15c6f325ed4e Author: Xi Ruoyao Date: Sun Aug 27 00:36:51 2023 +0800 LoongArch: Micro-optimize LD_PCREL We are requiring Binutils >= 2.41, so explicit relocation syntax is always supported by the assembler. Use it to reduce one instruction. Signed-off-by: Xi Ruoyao Diff: --- sysdeps/unix/sysv/linux/loongarch/pointer_guard.h | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/sysdeps/unix/sysv/linux/loongarch/pointer_guard.h b/sysdeps/unix/sysv/linux/loongarch/pointer_guard.h index b25e353b37..d6c78687d4 100644 --- a/sysdeps/unix/sysv/linux/loongarch/pointer_guard.h +++ b/sysdeps/unix/sysv/linux/loongarch/pointer_guard.h @@ -19,17 +19,15 @@ #ifndef POINTER_GUARD_H #define POINTER_GUARD_H -/* Load a got-relative EXPR into G, using T. - Note G and T are register names. */ +/* Load a got-relative EXPR into register G. */ #define LD_GLOBAL(G, EXPR) \ la.global G, EXPR; \ REG_L G, G, 0; -/* Load a pc-relative EXPR into G, using T. - Note G and T are register names. */ +/* Load a pc-relative EXPR into register G. */ #define LD_PCREL(G, EXPR) \ - la.pcrel G, EXPR; \ - REG_L G, G, 0; + pcalau12i G, %pc_hi20(EXPR); \ + REG_L G, G, %pc_lo12(EXPR); #if (IS_IN (rtld) \ || (!defined SHARED && (IS_IN (libc) \