From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1005) id 502623858D1E; Fri, 2 Jun 2023 04:15:09 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 502623858D1E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1685679309; bh=/pq1K0gHfzONKRLQBOlAArgh1WaUuspXMndLww8dqJk=; h=From:To:Subject:Date:From; b=XjbOVn7mYjPUtQ48rhP/7Z/Isj6jWwksX0qnpUmp1YJYEJ8BkpWExwi5FYOE5u2qN EGtpOQ50lyU9jiUCWfJxOIAIRzjt9aTsJs0GzqrFSXLgyBDwm8MwjQL9vmXHGyusSl LyPJdGNpLR3QjYlUIB2Ghawp9GKZPvOZ/wBKtubU= 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/work121)] Update ChangeLog.meissner X-Act-Checkin: gcc X-Git-Author: Michael Meissner X-Git-Refname: refs/users/meissner/heads/work121 X-Git-Oldrev: 0f0f0f1dc1da642c776154027b7a3f0882415551 X-Git-Newrev: 938734aea522cc3a73a1d163d004f50e30688392 Message-Id: <20230602041509.502623858D1E@sourceware.org> Date: Fri, 2 Jun 2023 04:15:09 +0000 (GMT) List-Id: https://gcc.gnu.org/g:938734aea522cc3a73a1d163d004f50e30688392 commit 938734aea522cc3a73a1d163d004f50e30688392 Author: Michael Meissner Date: Fri Jun 2 00:15:06 2023 -0400 Update ChangeLog.meissner Diff: --- gcc/ChangeLog.meissner | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/gcc/ChangeLog.meissner b/gcc/ChangeLog.meissner index 2772ab6ccb6..4d9fec8a92f 100644 --- a/gcc/ChangeLog.meissner +++ b/gcc/ChangeLog.meissner @@ -1,3 +1,31 @@ +==================== Branch work121, patch #40 ==================== + +PR target/89213 - Optimize vector shift by a constant. + +On power9 and power10 systems, optimize vector shifts by a constant, taking +advantage that the shift instructions only look at the bits within the element. + +2023-06-02 Michael Meissner + +gcc/ + + PR target/89213 + * config/rs6000/altivec.md (UNSPEC_VECTOR_SHIFT): New unspec. + (VSHIFT_MODE): New mode iterator. + (vshift_code): New code iterator. + (vshift_attr): New code attribute. + (altivec___const): New pattern to optimize + vector long long/int shifts by a constant. + (altivec__shift_const): New helper insn to load up a + constant used by the shift operation. + * config/rs6000/predicates.md (vector_shift_constant): New + predicate. + +gcc/testsuite/ + + PR target/89213 + * gcc.target/powerpc/pr89213.c: New test. + ==================== Branch work121, patch #37 ==================== Update fold-vec-extract insn counts on 32-bit big endian