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[174.21.149.226]) by smtp.gmail.com with ESMTPSA id i187sm22398382pfc.112.2020.04.18.09.19.34 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 18 Apr 2020 09:19:34 -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:mime-version :content-transfer-encoding; bh=GuLBXp+DHzvjBbWtLt3J1mN+KRme5ZQDBMNQ1V2Bki4=; b=qUW1bOw+SBbr6zLeMUTBFcV2tFSKdCgabbs5tgg/hXhDOFe9NounJu8binVdQxOL01 FsxwdkDY5FofahDlsGbSoasi3FnUmI1VOFK9q9O4zsrS9UGSb2yBBowegf9Y4/jx33za 4WflFVrj0MoCtBMFlY1SWkEiIGOWkLQpsnl3EoOMijhZX5Am3SVlRdnSQo+HjY/+RCO0 YVloAeSjOdjCF7RhDbaZVmgZkNJj04LLkW8zpuigWPxx/7PcMidXZzTTsE2roYKR//+x O5DJ42xASeQptR4zLqV1V9r4llJg8MbQLzwX/DAWnBiuErb9Ljdah9tsW1RUtTBX/1y2 8Bfg== 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:mime-version:content-transfer-encoding; bh=GuLBXp+DHzvjBbWtLt3J1mN+KRme5ZQDBMNQ1V2Bki4=; b=rbSx/RjAlebvsDeKr5FGU4jJqeSaMEI8LPqT7Kc2Cjfq8lPB1vP8XQx9NIdBj3H9+n +M8upLzinUi4vfL9Wpu2Tw41CXSu7mQPJJOoq+p/7kr0x14rfgAffVYCzD0EMi2xB2+H bJyKkXlwy3oUinLO2MmwdnFL3+PS42MuelU4tbg+USZ2stIy/s1cNoNTSyAm50kiCkRP Mcj3eaS32/Cb63dOMvZfvK0K7Ts2ISfzThhHcHnikfkVkknuI6/hQQvimmTb6o5T0d0r 5rUHedO8iwHre7usxfsCa+ZJH5ZOHYaoUMsNFKbmgjrhRjv+clCpsbH+IRxRzmxOul2r 2oTA== X-Gm-Message-State: AGi0Pub+1zwrUfQcZd0Ari5Hg30cVoRGlhuI6zRklht0I19BA6ht9NI+ fnUgHT/iEkneicQwhD5AcNfEp/wfVMQ= X-Google-Smtp-Source: APiQypKAQhrTmArN+c2D/K5LPUEFzJW8wT/hbovUcfl2i4nq14T/24CjTJb8l7t2YiwNYcUJ6DKFgQ== X-Received: by 2002:a63:6c83:: with SMTP id h125mr8941032pgc.168.1587226775385; Sat, 18 Apr 2020 09:19:35 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH 14/16] tcg: Add tcg_reg_alloc_dup2 Date: Sat, 18 Apr 2020 09:19:12 -0700 Message-Id: <20200418161914.4387-15-richard.henderson@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200418161914.4387-1-richard.henderson@linaro.org> References: <20200418161914.4387-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::541 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 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: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" There are several ways we can expand a vector dup of a 64-bit element on a 32-bit host. Signed-off-by: Richard Henderson --- tcg/tcg.c | 88 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 88 insertions(+) diff --git a/tcg/tcg.c b/tcg/tcg.c index fc1c97d586..d712d19842 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -3870,6 +3870,91 @@ static void tcg_reg_alloc_op(TCGContext *s, const TC= GOp *op) } } =20 +static void tcg_reg_alloc_dup2(TCGContext *s, const TCGOp *op) +{ + const TCGLifeData arg_life =3D op->life; + TCGTemp *ots, *itsl, *itsh; + TCGType vtype =3D TCGOP_VECL(op) + TCG_TYPE_V64; + + /* This opcode is only valid for 32-bit hosts, for 64-bit elements. */ + tcg_debug_assert(TCG_TARGET_REG_BITS =3D=3D 32); + tcg_debug_assert(TCGOP_VECE(op) =3D=3D MO_64); + + ots =3D arg_temp(op->args[0]); + itsl =3D arg_temp(op->args[1]); + itsh =3D arg_temp(op->args[2]); + + /* ENV should not be modified. */ + tcg_debug_assert(!temp_readonly(ots)); + + /* Allocate the output register now. */ + if (ots->val_type !=3D TEMP_VAL_REG) { + TCGRegSet allocated_regs =3D s->reserved_regs; + TCGRegSet dup_out_regs =3D + tcg_op_defs[INDEX_op_dup_vec].args_ct[0].u.regs; + + /* Make sure to not spill the input registers. */ + if (!IS_DEAD_ARG(1) && itsl->val_type =3D=3D TEMP_VAL_REG) { + tcg_regset_set_reg(allocated_regs, itsl->reg); + } + if (!IS_DEAD_ARG(2) && itsh->val_type =3D=3D TEMP_VAL_REG) { + tcg_regset_set_reg(allocated_regs, itsh->reg); + } + + ots->reg =3D tcg_reg_alloc(s, dup_out_regs, allocated_regs, + op->output_pref[0], ots->indirect_base); + ots->val_type =3D TEMP_VAL_REG; + ots->mem_coherent =3D 0; + s->reg_to_temp[ots->reg] =3D ots; + } + + /* Promote dup2 of immediates to dupi_vec. */ + if (itsl->val_type =3D=3D TEMP_VAL_CONST && + itsh->val_type =3D=3D TEMP_VAL_CONST) { + tcg_out_dupi_vec(s, vtype, ots->reg, + (uint32_t)itsl->val | ((uint64_t)itsh->val << 32)= ); + goto done; + } + + /* If the two inputs form one 64-bit value, try dupm_vec. */ + if (itsl + 1 =3D=3D itsh && + itsl->base_type =3D=3D TCG_TYPE_I64 && + itsh->base_type =3D=3D TCG_TYPE_I64) { + if (!itsl->mem_coherent) { + temp_sync(s, itsl, s->reserved_regs, 0, 0); + } + if (!itsl->mem_coherent) { + temp_sync(s, itsl, s->reserved_regs, 0, 0); + } +#ifdef HOST_WORDS_BIGENDIAN + TCGTemp *its =3D itsh; +#else + TCGTemp *its =3D itsl; +#endif + if (tcg_out_dupm_vec(s, vtype, MO_64, ots->reg, + its->mem_base->reg, its->mem_offset)) { + goto done; + } + } + + /* Fall back to generic expansion. */ + tcg_reg_alloc_op(s, op); + return; + + done: + if (IS_DEAD_ARG(1)) { + temp_dead(s, itsl); + } + if (IS_DEAD_ARG(2)) { + temp_dead(s, itsh); + } + if (NEED_SYNC_ARG(0)) { + temp_sync(s, ots, s->reserved_regs, 0, IS_DEAD_ARG(0)); + } else if (IS_DEAD_ARG(0)) { + temp_dead(s, ots); + } +} + #ifdef TCG_TARGET_STACK_GROWSUP #define STACK_DIR(x) (-(x)) #else @@ -4261,6 +4346,9 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb) case INDEX_op_dup_vec: tcg_reg_alloc_dup(s, op); break; + case INDEX_op_dup2_vec: + tcg_reg_alloc_dup2(s, op); + break; case INDEX_op_insn_start: if (num_insns >=3D 0) { size_t off =3D tcg_current_code_size(s); --=20 2.20.1