From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1666) id B707A3858C74; Wed, 21 Jun 2023 12:01:54 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B707A3858C74 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1687348914; bh=WmalGE9ANSZKnyn4Cl6MFrF3hPSFK8BMLizrD/2fq+Q=; h=From:To:Subject:Date:From; b=C24S9ZMjm+DqJHBvisvLbc0UxoAJIXlOZHrr2i3ReFNvj9iLXil+yb+2PfSpgEhss t0qO8UThY6wOiKXvEuMhaZSjQbhq6DBad0pPbCdBujD1ntGwtCx4DWoLkuDlUqvciY NZHuqvzMNa09NIFVh/hIQKhXoQ/mySmIOlatf7ew= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Richard Biener To: gcc-cvs@gcc.gnu.org Subject: [gcc r14-2015] Less strip_offset in IVOPTs X-Act-Checkin: gcc X-Git-Author: Richard Biener X-Git-Refname: refs/heads/master X-Git-Oldrev: 5d88932657de239a941ad84ef0996a906ecd8fe9 X-Git-Newrev: b54d0f29590d21991f519c5b70cc74e6309aa2f6 Message-Id: <20230621120154.B707A3858C74@sourceware.org> Date: Wed, 21 Jun 2023 12:01:54 +0000 (GMT) List-Id: https://gcc.gnu.org/g:b54d0f29590d21991f519c5b70cc74e6309aa2f6 commit r14-2015-gb54d0f29590d21991f519c5b70cc74e6309aa2f6 Author: Richard Biener Date: Wed Jun 21 12:08:01 2023 +0200 Less strip_offset in IVOPTs This avoids one strip_offset use in add_iv_candidate_for_use where we know it operates on a sizetype quantity. * tree-ssa-loop-ivopts.cc (add_iv_candidate_for_use): Use split_constant_offset for the POINTER_PLUS_EXPR case. Diff: --- gcc/tree-ssa-loop-ivopts.cc | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/gcc/tree-ssa-loop-ivopts.cc b/gcc/tree-ssa-loop-ivopts.cc index 957a3001e16..6671ff6db5a 100644 --- a/gcc/tree-ssa-loop-ivopts.cc +++ b/gcc/tree-ssa-loop-ivopts.cc @@ -3585,9 +3585,10 @@ add_iv_candidate_for_use (struct ivopts_data *data, struct iv_use *use) step = fold_convert (sizetype, step); record_common_cand (data, base, step, use); /* Also record common candidate with offset stripped. */ - base = strip_offset (base, &offset); - if (maybe_ne (offset, 0U)) - record_common_cand (data, base, step, use); + tree alt_base, alt_offset; + split_constant_offset (base, &alt_base, &alt_offset); + if (!integer_zerop (alt_offset)) + record_common_cand (data, alt_base, step, use); } /* At last, add auto-incremental candidates. Make such variables