From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1005) id B7E3F385188F; Thu, 17 Nov 2022 21:55:10 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B7E3F385188F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1668722110; bh=rF1K7a7+5q/koy7KEHM3HykSbNR2ctNgbKjlw6c1CvU=; h=From:To:Subject:Date:From; b=l6lAPMn0GBGeJV+p7tJLzHuY2VKibJ42XxTeC96iplFjmcSHUPFcYjr0fk8F8UpIN A+iPOSaAVts3slkzaY7xYz9A+y81Qkfigsgg8/xkNd+eKnDh7/7hUvhxacSxksZ5xq vy6GXCeWV6EUS7QMw5UqjL6IJ7gL3v53Bsn/5yuI= Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Michael Meissner To: gcc-cvs@gcc.gnu.org Subject: [gcc(refs/users/meissner/heads/dmf004)] Don't do load/store vector with length if overlap. X-Act-Checkin: gcc X-Git-Author: Michael Meissner X-Git-Refname: refs/users/meissner/heads/dmf004 X-Git-Oldrev: b2bfe0e370dd0bfc05c32fcbf39bb27ac32e0b5b X-Git-Newrev: 06d852660c1400211cee38507fb4796e462ca914 Message-Id: <20221117215510.B7E3F385188F@sourceware.org> Date: Thu, 17 Nov 2022 21:55:10 +0000 (GMT) List-Id: https://gcc.gnu.org/g:06d852660c1400211cee38507fb4796e462ca914 commit 06d852660c1400211cee38507fb4796e462ca914 Author: Michael Meissner Date: Wed Nov 16 03:28:12 2022 -0500 Don't do load/store vector with length if overlap. 2022-11-16 Michael Meissner gcc/ * config/rs6000/rs6000-string.cc (expand_block_move): Don't do the optimization to use load/store vector with length if the source and destination might overlap. Diff: --- gcc/config/rs6000/rs6000-string.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gcc/config/rs6000/rs6000-string.cc b/gcc/config/rs6000/rs6000-string.cc index 6e1e51c15fb..038f194c32c 100644 --- a/gcc/config/rs6000/rs6000-string.cc +++ b/gcc/config/rs6000/rs6000-string.cc @@ -2838,7 +2838,7 @@ expand_block_move (rtx operands[], bool might_overlap) if (TARGET_BLOCK_OPS_UNALIGNED_VSX && TARGET_P9_VECTOR && TARGET_64BIT && rs6000_memcpy_inline_bytes > 0 && rs6000_memcpy_inline_bytes <= 255 - && optimize && !optimize_size) + && !might_overlap && optimize && !optimize_size) { expand_block_move_variable (orig_dest, orig_src, bytes_rtx); return 1;