[RFC,v2,29/76] target/riscv: rvv-0.9: take fractional LMUL into vector max elements calculation

From: Frank Chang <frank.chang@sifive.com>

From: frank.chang@sifive.com
To: qemu-devel@nongnu.org,
	qemu-riscv@nongnu.org
Subject: [RFC v2 29/76] target/riscv: rvv-0.9: take fractional LMUL into
 vector max elements calculation
Date: Wed, 22 Jul 2020 17:15:52 +0800
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Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>,
 Frank Chang <frank.chang@sifive.com>,
 Bastian Koppelmann <kbastian@mail.uni-paderborn.de>,
 Richard Henderson <richard.henderson@linaro.org>,
 Alistair Francis <Alistair.Francis@wdc.com>,
 Palmer Dabbelt <palmer@dabbelt.com>, LIU Zhiwei <zhiwei_liu@c-sky.com>
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Message ID	20200722091641.8834-30-frank.chang@sifive.com
State	New
Headers	show Return-Path: <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org> From: frank.chang@sifive.com To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [RFC v2 29/76] target/riscv: rvv-0.9: take fractional LMUL into vector max elements calculation Date: Wed, 22 Jul 2020 17:15:52 +0800 Message-Id: <20200722091641.8834-30-frank.chang@sifive.com> In-Reply-To: <20200722091641.8834-1-frank.chang@sifive.com> References: <20200722091641.8834-1-frank.chang@sifive.com> Received-SPF: pass client-ip=2607:f8b0:4864:20::52d; envelope-from=frank.chang@sifive.com; helo=mail-pg1-x52d.google.com Precedence: list Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>, Frank Chang <frank.chang@sifive.com>, Bastian Koppelmann <kbastian@mail.uni-paderborn.de>, Richard Henderson <richard.henderson@linaro.org>, Alistair Francis <Alistair.Francis@wdc.com>, Palmer Dabbelt <palmer@dabbelt.com>, LIU Zhiwei <zhiwei_liu@c-sky.com> Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>
Series	target/riscv: support vector extension v0.9 \| expand [RFC,v2,00/76] target/riscv: support vector extension v0.9 [RFC,v2,01/76] target/riscv: drop vector 0.7.1 support [RFC,v2,02/76] target/riscv: rvv-0.9: support vector 0.9 [RFC,v2,03/76] target/riscv: fix rsub gvec tcg_assert_listed_vecop assertion [RFC,v2,04/76] target/riscv: correct the gvec IR called in gen_vec_rsub16_i64() [RFC,v2,05/76] target/riscv: fix return value of do_opivx_widen() [RFC,v2,06/76] target/riscv: fix vill bit index in vtype register [RFC,v2,07/76] target/riscv: Use FIELD_EX32() to extract wd field [RFC,v2,08/76] target/riscv: rvv-0.9: add mstatus VS field [RFC,v2,09/76] target/riscv: rvv-0.9: add sstatus VS field [RFC,v2,10/76] target/riscv: rvv-0.9: add translation-time vector context status [RFC,v2,11/76] target/riscv: rvv-0.9: remove vxrm and vxsat fields from fcsr register [RFC,v2,12/76] target/riscv: rvv-0.9: add vcsr register [RFC,v2,13/76] target/riscv: rvv-0.9: add vlenb register [RFC,v2,14/76] target/riscv: rvv-0.9: remove MLEN calculations [RFC,v2,15/76] target/riscv: rvv-0.9: add fractional LMUL [RFC,v2,16/76] target/riscv: rvv-0.9: add VMA and VTA [RFC,v2,17/76] target/riscv: rvv-0.9: update check functions [RFC,v2,18/76] target/riscv: introduce more imm value modes in translator functions [RFC,v2,19/76] target/riscv: rvv-0.9: add narrower_nanbox_fpr helper [RFC,v2,20/76] target/riscv: rvv-0.9: apply narrower nanbox helper in opfvf_trans [RFC,v2,21/76] target/riscv: rvv-0.9: configure instructions [RFC,v2,22/76] target/riscv: rvv-0.9: stride load and store instructions [RFC,v2,23/76] target/riscv: rvv-0.9: index load and store instructions [RFC,v2,24/76] target/riscv: rvv-0.9: fix address index overflow bug of indexed load/store insns [RFC,v2,25/76] target/riscv: rvv-0.9: fault-only-first unit stride load [RFC,v2,26/76] target/riscv: rvv-0.9: amo operations [RFC,v2,27/76] target/riscv: rvv-0.9: load/store whole register instructions [RFC,v2,28/76] target/riscv: rvv-0.9: update vext_max_elems() for load/store insns [RFC,v2,29/76] target/riscv: rvv-0.9: take fractional LMUL into vector max elements calculation [RFC,v2,30/76] target/riscv: rvv-0.9: floating-point square-root instruction [RFC,v2,31/76] target/riscv: rvv-0.9: floating-point classify instructions [RFC,v2,32/76] target/riscv: rvv-0.9: mask population count instruction [RFC,v2,33/76] target/riscv: rvv-0.9: find-first-set mask bit instruction [RFC,v2,34/76] target/riscv: rvv-0.9: set-X-first mask bit instructions [RFC,v2,35/76] target/riscv: rvv-0.9: iota instruction [RFC,v2,36/76] target/riscv: rvv-0.9: element index instruction [RFC,v2,37/76] target/riscv: rvv-0.9: allow load element with sign-extended [RFC,v2,38/76] target/riscv: rvv-0.9: register gather instructions [RFC,v2,39/76] target/riscv: rvv-0.9: integer scalar move instructions [RFC,v2,40/76] target/riscv: rvv-0.9: floating-point move instruction [RFC,v2,41/76] target/riscv: rvv-0.9: floating-point scalar move instructions [RFC,v2,42/76] target/riscv: rvv-0.9: whole register move instructions [RFC,v2,43/76] target/riscv: rvv-0.9: integer extension instructions [RFC,v2,44/76] target/riscv: rvv-0.9: single-width averaging add and subtract instructions [RFC,v2,45/76] target/riscv: rvv-0.9: single-width bit shift instructions [RFC,v2,46/76] target/riscv: rvv-0.9: integer add-with-carry/subtract-with-borrow [RFC,v2,47/76] target/riscv: rvv-0.9: narrowing integer right shift instructions [RFC,v2,48/76] target/riscv: rvv-0.9: widening integer multiply-add instructions [RFC,v2,49/76] target/riscv: rvv-0.9: quad-widening integer multiply-add instructions [RFC,v2,50/76] target/riscv: rvv-0.9: single-width saturating add and subtract instructions [RFC,v2,51/76] target/riscv: rvv-0.9: integer comparison instructions [RFC,v2,52/76] fpu: implement full set compare for fp16 [RFC,v2,53/76] target/riscv: use softfloat lib float16 comparison functions [RFC,v2,54/76] target/riscv: rvv-0.9: floating-point compare instructions [RFC,v2,55/76] target/riscv: rvv-0.9: single-width integer reduction instructions [RFC,v2,56/76] target/riscv: rvv-0.9: widening integer reduction instructions [RFC,v2,57/76] target/riscv: rvv-0.9: mask-register logical instructions [RFC,v2,58/76] target/riscv: rvv-0.9: slide instructions [RFC,v2,59/76] target/riscv: rvv-0.9: floating-point slide instructions [RFC,v2,60/76] target/riscv: rvv-0.9: narrowing fixed-point clip instructions [RFC,v2,61/76] target/riscv: rvv-0.9: floating-point/integer type-convert instructions [RFC,v2,62/76] target/riscv: rvv-0.9: single-width floating-point reduction [RFC,v2,63/76] target/riscv: rvv-0.9: widening floating-point reduction instructions [RFC,v2,64/76] target/riscv: rvv-0.9: single-width scaling shift instructions [RFC,v2,65/76] target/riscv: rvv-0.9: remove widening saturating scaled multiply-add [RFC,v2,66/76] target/riscv: rvv-0.9: remove vmford.vv and vmford.vf [RFC,v2,67/76] target/riscv: rvv-0.9: remove integer extract instruction [RFC,v2,68/76] fpu: add api to handle alternative sNaN propagation [RFC,v2,69/76] target/riscv: rvv-0.9: floating-point min/max instructions [RFC,v2,70/76] softfloat: add fp16 and uint8/int8 interconvert functions [RFC,v2,71/76] target/riscv: rvv-0.9: widening floating-point/integer type-convert [RFC,v2,72/76] target/riscv: rvv-0.9: narrowing floating-point/integer type-convert [RFC,v2,73/76] fpu: fix float16 nan check [RFC,v2,74/76] target/riscv: gdb: modify gdb csr xml file to align with csr register map [RFC,v2,75/76] target/riscv: gdb: support vector registers for rv64 [RFC,v2,76/76] target/riscv: gdb: support vector registers for rv32

[RFC,v2,29/76] target/riscv: rvv-0.9: take fractional LMUL into vector max elements calculation

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