From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by sourceware.org (Postfix) with ESMTPS id 2F2813858D3C for ; Fri, 4 Nov 2022 00:06:37 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 2F2813858D3C Authentication-Results: sourceware.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=gmail.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1667520397; x=1699056397; h=from:to:cc:subject:date:message-id; bh=k+bFxZLjCq6RPJ2vmPIUIYok2MrtjLIKeTYZr0SdSJc=; b=EMNpxzBGkrbsqjZubS4ocVyaZxG0ng87vhSCwZf4Yi61I9YtL9NgDrCs xR9SWNLlTddwUlUU/RJcPzzchMMmbBVt2z9NJVMcndB90SJjUGGVYtx/W DRWJKEe0yz8ZQClzi/lsMJ7Ab/A7Tr9o/9Q4Bv0bF4m4Lyp6j6QD/DbQB sKMxFtR8BdpgVs+lVIOAh/oVEnci/Fkvst10fg4oE2zkMdYhQ2d1qDyit tzRrsN3uO3QLw7fbsaryKyE1hVVKWiEIDGfGtDY0lL0qSZX1g+fvJmZvo FRoGWHZDNJHb9ZQ0rBJvKjGCvOUQaGhAA6tzRjVhy5HONuM/RMVCyN+VT g==; X-IronPort-AV: E=McAfee;i="6500,9779,10520"; a="309830879" X-IronPort-AV: E=Sophos;i="5.96,135,1665471600"; d="scan'208";a="309830879" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Nov 2022 17:06:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10520"; a="703881785" X-IronPort-AV: E=Sophos;i="5.96,135,1665471600"; d="scan'208";a="703881785" Received: from shvmail03.sh.intel.com ([10.239.245.20]) by fmsmga004.fm.intel.com with ESMTP; 03 Nov 2022 17:06:33 -0700 Received: from shliclel320.sh.intel.com (shliclel320.sh.intel.com [10.239.240.127]) by shvmail03.sh.intel.com (Postfix) with ESMTP id 0B0451005705; Fri, 4 Nov 2022 08:06:33 +0800 (CST) From: Hongyu Wang To: gcc-patches@gcc.gnu.org Cc: richard.guenther@gmail.com, hongtao.liu@intel.com Subject: [PATCH] Optimize VEC_PERM_EXPR with same permutation index and operation [PR98167] Date: Fri, 4 Nov 2022 08:04:32 +0800 Message-Id: <20221104000432.15254-1-hongyu.wang@intel.com> X-Mailer: git-send-email 2.18.1 X-Spam-Status: No, score=-11.0 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,GIT_PATCH_0,HEADER_FROM_DIFFERENT_DOMAINS,KAM_SHORT,SPF_HELO_NONE,SPF_SOFTFAIL,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: Hi, This is a follow-up patch for PR98167 The sequence c1 = VEC_PERM_EXPR (a, a, mask) c2 = VEC_PERM_EXPR (b, b, mask) c3 = c1 op c2 can be optimized to c = a op b c3 = VEC_PERM_EXPR (c, c, mask) for all integer vector operation, and float operation with full permutation. Bootstrapped & regrtested on x86_64-pc-linux-gnu. Ok for trunk? gcc/ChangeLog: PR target/98167 * match.pd: New perm + vector op patterns for int and fp vector. gcc/testsuite/ChangeLog: PR target/98167 * gcc.target/i386/pr98167.c: New test. --- gcc/match.pd | 49 +++++++++++++++++++++++++ gcc/testsuite/gcc.target/i386/pr98167.c | 44 ++++++++++++++++++++++ 2 files changed, 93 insertions(+) create mode 100644 gcc/testsuite/gcc.target/i386/pr98167.c diff --git a/gcc/match.pd b/gcc/match.pd index 194ba8f5188..b85ad34f609 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -8189,3 +8189,52 @@ and, (bit_and (negate @0) integer_onep@1) (if (!TYPE_OVERFLOW_SANITIZED (type)) (bit_and @0 @1))) + +/* Optimize + c1 = VEC_PERM_EXPR (a, a, mask) + c2 = VEC_PERM_EXPR (b, b, mask) + c3 = c1 op c2 + --> + c = a op b + c3 = VEC_PERM_EXPR (c, c, mask) + For all integer non-div operations. */ +(for op (plus minus mult bit_and bit_ior bit_xor + lshift rshift) + (simplify + (op (vec_perm @0 @0 VECTOR_CST@2) (vec_perm @1 @1 VECTOR_CST@2)) + (if (VECTOR_INTEGER_TYPE_P (type)) + (vec_perm (op @0 @1) (op @0 @1) @2)))) + +/* Similar for float arithmetic when permutation constant covers + all vector elements. */ +(for op (plus minus mult) + (simplify + (op (vec_perm @0 @0 VECTOR_CST@2) (vec_perm @1 @1 VECTOR_CST@2)) + (if (VECTOR_FLOAT_TYPE_P (type)) + (with + { + tree perm_cst = @2; + vec_perm_builder builder; + bool full_perm_p = false; + if (tree_to_vec_perm_builder (&builder, perm_cst)) + { + /* Create a vec_perm_indices for the integer vector. */ + int nelts = TYPE_VECTOR_SUBPARTS (type).to_constant (); + vec_perm_indices sel (builder, 1, nelts); + + /* Check if perm indices covers all vector elements. */ + int count = 0, i, j; + for (i = 0; i < nelts; i++) + for (j = 0; j < nelts; j++) + { + if (sel[j].to_constant () == i) + { + count++; + break; + } + } + full_perm_p = count == nelts; + } + } + (if (full_perm_p) + (vec_perm (op @0 @1) (op @0 @1) @2)))))) diff --git a/gcc/testsuite/gcc.target/i386/pr98167.c b/gcc/testsuite/gcc.target/i386/pr98167.c new file mode 100644 index 00000000000..40e0ac11332 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr98167.c @@ -0,0 +1,44 @@ +/* PR target/98167 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -mavx2" } */ + +/* { dg-final { scan-assembler-times "vpshufd\t" 8 } } */ +/* { dg-final { scan-assembler-times "vpermilps\t" 3 } } */ + +#define VEC_PERM_4 \ + 2, 3, 1, 0 +#define VEC_PERM_8 \ + 4, 5, 6, 7, 3, 2, 1, 0 +#define VEC_PERM_16 \ + 8, 9, 10, 11, 12, 13, 14, 15, 7, 6, 5, 4, 3, 2, 1, 0 + +#define TYPE_PERM_OP(type, size, op, name) \ + typedef type v##size##s##type __attribute__ ((vector_size(4*size))); \ + v##size##s##type type##foo##size##i_##name (v##size##s##type a, \ + v##size##s##type b) \ + { \ + v##size##s##type a1 = __builtin_shufflevector (a, a, \ + VEC_PERM_##size); \ + v##size##s##type b1 = __builtin_shufflevector (b, b, \ + VEC_PERM_##size); \ + return a1 op b1; \ + } + +#define INT_PERMS(op, name) \ + TYPE_PERM_OP (int, 4, op, name) \ + +#define FP_PERMS(op, name) \ + TYPE_PERM_OP (float, 4, op, name) \ + +INT_PERMS (+, add) +INT_PERMS (-, sub) +INT_PERMS (*, mul) +INT_PERMS (|, ior) +INT_PERMS (^, xor) +INT_PERMS (&, and) +INT_PERMS (<<, shl) +INT_PERMS (>>, shr) +FP_PERMS (+, add) +FP_PERMS (-, sub) +FP_PERMS (*, mul) + -- 2.18.1