From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1005) id 34CB3384F6C8; Thu, 17 Nov 2022 21:54:35 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 34CB3384F6C8 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1668722075; bh=jnB8WExgqreJ2gSn7s5/MS9faZMMzkH2jjrfaVOcqDc=; h=From:To:Subject:Date:From; b=cw4BDX8vRvFdPmPrzQ07szI0s001wzqoQ1w576EbVFsOsP+35ft7qqGTCf++vnI4J bG/562kmJk0lrtsU2jOG8B/3Mb9i3dcbwL4pg2phbEqL2TurZcI3odtoFeNaCk77Au duDH6RJn1H94146zW68KGgR10VUx4AAR5ToHUS8M= 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)] Add parameter for memcpy inline code moves X-Act-Checkin: gcc X-Git-Author: Michael Meissner X-Git-Refname: refs/users/meissner/heads/dmf004 X-Git-Oldrev: 64eaa2bccc0a2934220b10b82426c2e11d9d16ae X-Git-Newrev: b65e4974ba99db96038cd29363f650ec482bafea Message-Id: <20221117215435.34CB3384F6C8@sourceware.org> Date: Thu, 17 Nov 2022 21:54:35 +0000 (GMT) List-Id: https://gcc.gnu.org/g:b65e4974ba99db96038cd29363f650ec482bafea commit b65e4974ba99db96038cd29363f650ec482bafea Author: Michael Meissner Date: Tue Nov 15 12:27:09 2022 -0500 Add parameter for memcpy inline code moves 2022-11-15 Michael Meissner gcc/ * config/rs6000/rs6000.opt (rs6000-memcpy-inline-bytes): New parameter, set to 0. * config/rs6000/rs6000-string.cc (expand_block_move): Only do optimization if rs6000-memcpy-inline-bytes is 16. Diff: --- gcc/config/rs6000/rs6000-string.cc | 1 + gcc/config/rs6000/rs6000.opt | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/gcc/config/rs6000/rs6000-string.cc b/gcc/config/rs6000/rs6000-string.cc index 2468e375781..1fa2d1fe553 100644 --- a/gcc/config/rs6000/rs6000-string.cc +++ b/gcc/config/rs6000/rs6000-string.cc @@ -2766,6 +2766,7 @@ expand_block_move (rtx operands[], bool might_overlap) if (! constp) { if (TARGET_BLOCK_OPS_UNALIGNED_VSX && TARGET_P9_VECTOR && TARGET_64BIT + && rs6000_memcpy_inline_bytes == 16 && !optimize_size) { rtx join_label = gen_label_rtx (); diff --git a/gcc/config/rs6000/rs6000.opt b/gcc/config/rs6000/rs6000.opt index 6872d359952..90dc91a277f 100644 --- a/gcc/config/rs6000/rs6000.opt +++ b/gcc/config/rs6000/rs6000.opt @@ -687,3 +687,8 @@ default value is 4. Target Undocumented Joined UInteger Var(rs6000_vect_unroll_reduc_threshold) Init(1) Param When reduction factor computed for a loop exceeds the threshold specified by this parameter, prefer to unroll this loop. The default value is 1. + +-param=rs6000-memcpy-inline-bytes= +Target Undocumented Joined UInteger Var(rs6000_memcpy_inline_bytes) Init(0) Param +Maximum number of bytes to move with inline code before calling the memcpy +library function. The default value is 0.