From nobody Mon Nov 10 19:47:08 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1558206872; cv=none; d=zoho.com; s=zohoarc; b=kNZQopqSspB1N18JPYdjZpjIDC7aKQkEnZns9nKQVIEOccJebTr8gZrMlXDPpT9xKx9GFHhBnUFm23W1Sb8n2ZbwJnIS/Enn5BeIrmcByzK/tIFAlm0/ym2woN99CPcAvbcxwNpHkgBSlSqgJ1c+UoYFlDwx3LGsUVdpzZGOVhg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1558206872; h=Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=dIrUBx1AozwSRTf1CstcHoUDbRuw3JV0rC9AxpXdw/A=; b=AFOM651vALGLTZo0jfxHkgYESR8by4rC1K32BJXBFE6zXjcKiq+ip0HJDQ6aR00ZDAW5i45NYG0WUgS/j3+OAJ7lGqNenDfhB25GJOthg5LWHEt7sv8RRs4HH96FN2T1EUC+ZgzpGyJR6EYprWlgkDcvsrJvpTnKzSdFcqLcu+8= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1558206872429900.5753913136446; Sat, 18 May 2019 12:14:32 -0700 (PDT) Received: from localhost ([127.0.0.1]:37697 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hS4mn-0002fu-4d for importer@patchew.org; Sat, 18 May 2019 15:14:25 -0400 Received: from eggs.gnu.org ([209.51.188.92]:59178) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hS4dT-0002nw-5n for qemu-devel@nongnu.org; Sat, 18 May 2019 15:04:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hS4at-0002bD-GY for qemu-devel@nongnu.org; Sat, 18 May 2019 15:02:08 -0400 Received: from mail-pg1-x542.google.com ([2607:f8b0:4864:20::542]:35635) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hS4at-0002aC-A7 for qemu-devel@nongnu.org; Sat, 18 May 2019 15:02:07 -0400 Received: by mail-pg1-x542.google.com with SMTP id t1so3413061pgc.2 for ; Sat, 18 May 2019 12:02:07 -0700 (PDT) Received: from localhost.localdomain (97-113-13-231.tukw.qwest.net. [97.113.13.231]) by smtp.gmail.com with ESMTPSA id m9sm2751274pgd.23.2019.05.18.12.02.04 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 18 May 2019 12:02:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references; bh=dIrUBx1AozwSRTf1CstcHoUDbRuw3JV0rC9AxpXdw/A=; b=HbYzrvJFD7lLFYnQLN96DI7UB7yOIJaiDHgcX0tXIY4SOLJwxQ6Ruj/NfpH00cMb6r ki6wG24bI+sFlr+yOaVkR77BrlYD/wjEfpqr4soAhUtxZuql1HqRAv2tn5gYreXEV8HA Z93pDLzqn9vo4gAXqH4606m3oOJAbpLxoRs3RrB+/hN+vWoBMDvFuHZeshQawRXAQ7ii j0Jazb/Ghi+5EYVbCY0x6Va9Pv5Acn9LdvkhTOZJgySOlPjjUdbUQwSzfTWK8rzB/5dl mIKFirzuYmB7YqbDOZs61672zvlPFNWReW6+huJYYft+CUE+x/y8UJUPN2vVPDvk61oN E3xQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references; bh=dIrUBx1AozwSRTf1CstcHoUDbRuw3JV0rC9AxpXdw/A=; b=l0dUH68CrcVZyG15Tyom9K6qTQ/w7kFT/nQ1JWrTqUWASJG+zBkFixKG34/3F1FGAd y4XBWAgtsJhu0EXAFuzqQM7BzRlNxXpq+hOc+5DtQADjfD3Y9Y7/MsHsZEUj8Mk4bkl6 jrwEgN0O8the8+ZziAwfUFQWre65OAouaszvEhwBzb4KEg06SqZ9ZdLC3t9eY1I0VHep pR4NZvI/lbwfdlKffaoHDiI+RP7uB8p1IPnAlssCU3WB57Y64wQEPlc/FCLFtdePKZ8W uiGWo75dKRSva/MUtyHZiGMwPEmXShNvl0CLEZtOsWhfrvRWYHyaxeWKn7JUa2M5oDrQ TGzQ== X-Gm-Message-State: APjAAAWZt68T5fYCZLdxFP/PzEL9GtfT0RyWePVfjWNaQetsG1Jf26+h dF2RvGf5FAW+2C8z8+mf5/0BUh73khw= X-Google-Smtp-Source: APXvYqzgUaZA6apoHI0bqw1cqGN/FRASpYzdhiMTTLNkq8qoIUwPr7Pqvh9wJSTx0X37VOD1taVvXw== X-Received: by 2002:a62:116:: with SMTP id 22mr30861702pfb.119.1558206126050; Sat, 18 May 2019 12:02:06 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Sat, 18 May 2019 12:01:45 -0700 Message-Id: <20190518190157.21255-5-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190518190157.21255-1-richard.henderson@linaro.org> References: <20190518190157.21255-1-richard.henderson@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::542 Subject: [Qemu-devel] [PATCH 04/16] tcg: Add support for vector compare select X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Perform a per-element conditional move. This combination operation is easier to implement on some host vector units than plain cmp+bitsel. Omit the usual gvec interface, as this is intended to be used by target-specific gvec expansion call-backs. Signed-off-by: Richard Henderson --- tcg/aarch64/tcg-target.h | 1 + tcg/i386/tcg-target.h | 1 + tcg/tcg-op.h | 2 ++ tcg/tcg-opc.h | 1 + tcg/tcg.h | 1 + tcg/tcg-op-vec.c | 59 ++++++++++++++++++++++++++++++++++++++++ tcg/tcg.c | 3 ++ tcg/README | 7 +++++ 8 files changed, 75 insertions(+) diff --git a/tcg/aarch64/tcg-target.h b/tcg/aarch64/tcg-target.h index 52ee66424f..b4a9d36bbc 100644 --- a/tcg/aarch64/tcg-target.h +++ b/tcg/aarch64/tcg-target.h @@ -141,6 +141,7 @@ typedef enum { #define TCG_TARGET_HAS_sat_vec 1 #define TCG_TARGET_HAS_minmax_vec 1 #define TCG_TARGET_HAS_bitsel_vec 0 +#define TCG_TARGET_HAS_cmpsel_vec 0 =20 #define TCG_TARGET_DEFAULT_MO (0) #define TCG_TARGET_HAS_MEMORY_BSWAP 1 diff --git a/tcg/i386/tcg-target.h b/tcg/i386/tcg-target.h index 08a0386433..16a83a7f7b 100644 --- a/tcg/i386/tcg-target.h +++ b/tcg/i386/tcg-target.h @@ -191,6 +191,7 @@ extern bool have_avx2; #define TCG_TARGET_HAS_sat_vec 1 #define TCG_TARGET_HAS_minmax_vec 1 #define TCG_TARGET_HAS_bitsel_vec 0 +#define TCG_TARGET_HAS_cmpsel_vec 0 =20 #define TCG_TARGET_deposit_i32_valid(ofs, len) \ (((ofs) =3D=3D 0 && (len) =3D=3D 8) || ((ofs) =3D=3D 8 && (len) =3D=3D= 8) || \ diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h index 268860ed2f..2d4dd5cd7d 100644 --- a/tcg/tcg-op.h +++ b/tcg/tcg-op.h @@ -1002,6 +1002,8 @@ void tcg_gen_cmp_vec(TCGCond cond, unsigned vece, TCG= v_vec r, =20 void tcg_gen_bitsel_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b, TCGv_vec c); +void tcg_gen_cmpsel_vec(TCGCond cond, unsigned vece, TCGv_vec r, + TCGv_vec a, TCGv_vec b, TCGv_vec c, TCGv_vec d); =20 void tcg_gen_ld_vec(TCGv_vec r, TCGv_ptr base, TCGArg offset); void tcg_gen_st_vec(TCGv_vec r, TCGv_ptr base, TCGArg offset); diff --git a/tcg/tcg-opc.h b/tcg/tcg-opc.h index c05b71427c..c7d971fa3d 100644 --- a/tcg/tcg-opc.h +++ b/tcg/tcg-opc.h @@ -257,6 +257,7 @@ DEF(sarv_vec, 1, 2, 0, IMPLVEC | IMPL(TCG_TARGET_HAS_sh= v_vec)) DEF(cmp_vec, 1, 2, 1, IMPLVEC) =20 DEF(bitsel_vec, 1, 3, 0, IMPLVEC | IMPL(TCG_TARGET_HAS_bitsel_vec)) +DEF(cmpsel_vec, 1, 4, 1, IMPLVEC | IMPL(TCG_TARGET_HAS_cmpsel_vec)) =20 DEF(last_generic, 0, 0, 0, TCG_OPF_NOT_PRESENT) =20 diff --git a/tcg/tcg.h b/tcg/tcg.h index 72f9f6c70b..21cd6f1249 100644 --- a/tcg/tcg.h +++ b/tcg/tcg.h @@ -188,6 +188,7 @@ typedef uint64_t TCGRegSet; #define TCG_TARGET_HAS_sat_vec 0 #define TCG_TARGET_HAS_minmax_vec 0 #define TCG_TARGET_HAS_bitsel_vec 0 +#define TCG_TARGET_HAS_cmpsel_vec 0 #else #define TCG_TARGET_MAYBE_vec 1 #endif diff --git a/tcg/tcg-op-vec.c b/tcg/tcg-op-vec.c index 99cbf29e0b..a888c02df8 100644 --- a/tcg/tcg-op-vec.c +++ b/tcg/tcg-op-vec.c @@ -119,6 +119,11 @@ bool tcg_can_emit_vecop_list(const TCGOpcode *list, continue; } break; + case INDEX_op_cmpsel_vec: + if (tcg_can_emit_vec_op(INDEX_op_cmp_vec, type, vece)) { + continue; + } + break; default: break; } @@ -159,6 +164,20 @@ void vec_gen_4(TCGOpcode opc, TCGType type, unsigned v= ece, op->args[3] =3D c; } =20 +static void vec_gen_6(TCGOpcode opc, TCGType type, unsigned vece, TCGArg r, + TCGArg a, TCGArg b, TCGArg c, TCGArg d, TCGArg e) +{ + TCGOp *op =3D tcg_emit_op(opc); + TCGOP_VECL(op) =3D type - TCG_TYPE_V64; + TCGOP_VECE(op) =3D vece; + op->args[0] =3D r; + op->args[1] =3D a; + op->args[2] =3D b; + op->args[3] =3D c; + op->args[4] =3D d; + op->args[5] =3D e; +} + static void vec_gen_op2(TCGOpcode opc, unsigned vece, TCGv_vec r, TCGv_vec= a) { TCGTemp *rt =3D tcgv_vec_temp(r); @@ -717,3 +736,43 @@ void tcg_gen_bitsel_vec(unsigned vece, TCGv_vec r, TCG= v_vec a, tcg_temp_free_vec(t); } } + +void tcg_gen_cmpsel_vec(TCGCond cond, unsigned vece, TCGv_vec r, + TCGv_vec a, TCGv_vec b, TCGv_vec c, TCGv_vec d) +{ + TCGTemp *rt =3D tcgv_vec_temp(r); + TCGTemp *at =3D tcgv_vec_temp(a); + TCGTemp *bt =3D tcgv_vec_temp(b); + TCGTemp *ct =3D tcgv_vec_temp(c); + TCGTemp *dt =3D tcgv_vec_temp(d); + TCGArg ri =3D temp_arg(rt); + TCGArg ai =3D temp_arg(at); + TCGArg bi =3D temp_arg(bt); + TCGArg ci =3D temp_arg(ct); + TCGArg di =3D temp_arg(dt); + TCGType type =3D rt->base_type; + const TCGOpcode *hold_list; + int can; + + tcg_debug_assert(at->base_type >=3D type); + tcg_debug_assert(bt->base_type >=3D type); + tcg_debug_assert(ct->base_type >=3D type); + tcg_debug_assert(dt->base_type >=3D type); + + tcg_assert_listed_vecop(INDEX_op_cmpsel_vec); + hold_list =3D tcg_swap_vecop_list(NULL); + can =3D tcg_can_emit_vec_op(INDEX_op_cmpsel_vec, type, vece); + + if (can > 0) { + vec_gen_6(INDEX_op_cmpsel_vec, type, vece, ri, ai, bi, ci, di, con= d); + } else if (can < 0) { + tcg_expand_vec_op(INDEX_op_cmpsel_vec, type, vece, + ri, ai, bi, ci, di, cond); + } else { + TCGv_vec t =3D tcg_temp_new_vec(type); + tcg_gen_cmp_vec(cond, vece, t, a, b); + tcg_gen_bitsel_vec(vece, r, t, c, d); + tcg_temp_free_vec(t); + } + tcg_swap_vecop_list(hold_list); +} diff --git a/tcg/tcg.c b/tcg/tcg.c index 5d947dbcb0..02a2680169 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -1648,6 +1648,8 @@ bool tcg_op_supported(TCGOpcode op) return have_vec && TCG_TARGET_HAS_minmax_vec; case INDEX_op_bitsel_vec: return have_vec && TCG_TARGET_HAS_bitsel_vec; + case INDEX_op_cmpsel_vec: + return have_vec && TCG_TARGET_HAS_cmpsel_vec; =20 default: tcg_debug_assert(op > INDEX_op_last_generic && op < NB_OPS); @@ -2028,6 +2030,7 @@ static void tcg_dump_ops(TCGContext *s, bool have_pre= fs) case INDEX_op_setcond_i64: case INDEX_op_movcond_i64: case INDEX_op_cmp_vec: + case INDEX_op_cmpsel_vec: if (op->args[k] < ARRAY_SIZE(cond_name) && cond_name[op->args[k]]) { col +=3D qemu_log(",%s", cond_name[op->args[k++]]); diff --git a/tcg/README b/tcg/README index 76057ab59f..21fcdf737f 100644 --- a/tcg/README +++ b/tcg/README @@ -631,6 +631,13 @@ E.g. VECL=3D1 -> 64 << 1 -> v128, and VECE=3D2 -> 1 <<= 2 -> i32. =20 Bitwise select, v0 =3D (v2 & v1) | (v3 & ~v1), across the entire vector. =20 +* cmpsel_vec v0, c1, c2, v3, v4, cond + + Select elements based on comparison results: + for (i =3D 0; i < n; ++i) { + v0[i] =3D (c1[i] cond c2[i]) ? v3[i] : v4[i]. + } + ********* =20 Note 1: Some shortcuts are defined when the last operand is known to be --=20 2.17.1