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[114.34.229.221]) by smtp.gmail.com with ESMTPSA id c125sm22301879pfa.119.2020.07.22.02.20.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Jul 2020 02:20:53 -0700 (PDT) From: frank.chang@sifive.com To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [RFC v2 46/76] target/riscv: rvv-0.9: integer add-with-carry/subtract-with-borrow Date: Wed, 22 Jul 2020 17:16:09 +0800 Message-Id: <20200722091641.8834-47-frank.chang@sifive.com> X-Mailer: git-send-email 2.17.1 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::443; envelope-from=frank.chang@sifive.com; helo=mail-pf1-x443.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action 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: , Cc: Sagar Karandikar , Frank Chang , Bastian Koppelmann , Richard Henderson , Alistair Francis , Palmer Dabbelt , LIU Zhiwei Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Frank Chang Clear tail elements only if VTA is agnostic. Signed-off-by: Frank Chang --- target/riscv/insn32.decode | 20 +++++----- target/riscv/insn_trans/trans_rvv.inc.c | 2 +- target/riscv/vector_helper.c | 50 ++++++++++++++----------- 3 files changed, 40 insertions(+), 32 deletions(-) diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index 0521ca4ab4..481f909d47 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -324,16 +324,16 @@ vwsubu_wv 110110 . ..... ..... 010 ..... 1010111 @r_vm vwsubu_wx 110110 . ..... ..... 110 ..... 1010111 @r_vm vwsub_wv 110111 . ..... ..... 010 ..... 1010111 @r_vm vwsub_wx 110111 . ..... ..... 110 ..... 1010111 @r_vm -vadc_vvm 010000 1 ..... ..... 000 ..... 1010111 @r_vm_1 -vadc_vxm 010000 1 ..... ..... 100 ..... 1010111 @r_vm_1 -vadc_vim 010000 1 ..... ..... 011 ..... 1010111 @r_vm_1 -vmadc_vvm 010001 1 ..... ..... 000 ..... 1010111 @r_vm_1 -vmadc_vxm 010001 1 ..... ..... 100 ..... 1010111 @r_vm_1 -vmadc_vim 010001 1 ..... ..... 011 ..... 1010111 @r_vm_1 -vsbc_vvm 010010 1 ..... ..... 000 ..... 1010111 @r_vm_1 -vsbc_vxm 010010 1 ..... ..... 100 ..... 1010111 @r_vm_1 -vmsbc_vvm 010011 1 ..... ..... 000 ..... 1010111 @r_vm_1 -vmsbc_vxm 010011 1 ..... ..... 100 ..... 1010111 @r_vm_1 +vadc_vvm 010000 0 ..... ..... 000 ..... 1010111 @r_vm_1 +vadc_vxm 010000 0 ..... ..... 100 ..... 1010111 @r_vm_1 +vadc_vim 010000 0 ..... ..... 011 ..... 1010111 @r_vm_1 +vmadc_vvm 010001 . ..... ..... 000 ..... 1010111 @r_vm +vmadc_vxm 010001 . ..... ..... 100 ..... 1010111 @r_vm +vmadc_vim 010001 . ..... ..... 011 ..... 1010111 @r_vm +vsbc_vvm 010010 0 ..... ..... 000 ..... 1010111 @r_vm_1 +vsbc_vxm 010010 0 ..... ..... 100 ..... 1010111 @r_vm_1 +vmsbc_vvm 010011 . ..... ..... 000 ..... 1010111 @r_vm +vmsbc_vxm 010011 . ..... ..... 100 ..... 1010111 @r_vm vand_vv 001001 . ..... ..... 000 ..... 1010111 @r_vm vand_vx 001001 . ..... ..... 100 ..... 1010111 @r_vm vand_vi 001001 . ..... ..... 011 ..... 1010111 @r_vm diff --git a/target/riscv/insn_trans/trans_rvv.inc.c b/target/riscv/insn_trans/trans_rvv.inc.c index 3998011ef7..45853812f7 100644 --- a/target/riscv/insn_trans/trans_rvv.inc.c +++ b/target/riscv/insn_trans/trans_rvv.inc.c @@ -1806,7 +1806,7 @@ static bool trans_##NAME(DisasContext *s, arg_rmrr *a) \ /* * For vadc and vsbc, an illegal instruction exception is raised if the - * destination vector register is v0 and LMUL > 1. (Section 12.3) + * destination vector register is v0 and LMUL > 1. (Section 12.4) */ static bool opivv_vadc_check(DisasContext *s, arg_rmrr *a) { diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index aa940080a7..95248238df 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -1316,24 +1316,28 @@ GEN_VEXT_VADC_VXM(vsbc_vxm_d, uint64_t, H8, DO_VSBC, clearq) (__typeof(N))(N + M) < N) #define DO_MSBC(N, M, C) (C ? N <= M : N < M) -#define GEN_VEXT_VMADC_VVM(NAME, ETYPE, H, DO_OP) \ -void HELPER(NAME)(void *vd, void *v0, void *vs1, void *vs2, \ - CPURISCVState *env, uint32_t desc) \ -{ \ - uint32_t vl = env->vl; \ - uint32_t vlmax = vext_maxsz(desc) / sizeof(ETYPE); \ - uint32_t i; \ - \ - for (i = 0; i < vl; i++) { \ - ETYPE s1 = *((ETYPE *)vs1 + H(i)); \ - ETYPE s2 = *((ETYPE *)vs2 + H(i)); \ - uint8_t carry = vext_elem_mask(v0, i); \ - \ - vext_set_elem_mask(vd, i, DO_OP(s2, s1, carry)); \ - } \ - for (; i < vlmax; i++) { \ - vext_set_elem_mask(vd, i, 0); \ - } \ +#define GEN_VEXT_VMADC_VVM(NAME, ETYPE, H, DO_OP) \ +void HELPER(NAME)(void *vd, void *v0, void *vs1, void *vs2, \ + CPURISCVState *env, uint32_t desc) \ +{ \ + uint32_t vl = env->vl; \ + uint32_t vlmax = vext_max_elems(desc, sizeof(ETYPE), false);\ + uint32_t vm = vext_vm(desc); \ + uint32_t vta = vext_vta(desc); \ + uint32_t i; \ + \ + for (i = 0; i < vl; i++) { \ + ETYPE s1 = *((ETYPE *)vs1 + H(i)); \ + ETYPE s2 = *((ETYPE *)vs2 + H(i)); \ + uint8_t carry = !vm ? vext_elem_mask(v0, i) : 0; \ + \ + vext_set_elem_mask(vd, i, DO_OP(s2, s1, carry)); \ + } \ + if (vta == 1) { \ + for (; i < vlmax; i++) { \ + vext_set_elem_mask(vd, i, 1); \ + } \ + } \ } GEN_VEXT_VMADC_VVM(vmadc_vvm_b, uint8_t, H1, DO_MADC) @@ -1352,17 +1356,21 @@ void HELPER(NAME)(void *vd, void *v0, target_ulong s1, \ { \ uint32_t vl = env->vl; \ uint32_t vlmax = vext_max_elems(desc, sizeof(ETYPE), false);\ + uint32_t vm = vext_vm(desc); \ + uint32_t vta = vext_vta(desc); \ uint32_t i; \ \ for (i = 0; i < vl; i++) { \ ETYPE s2 = *((ETYPE *)vs2 + H(i)); \ - uint8_t carry = vext_elem_mask(v0, i); \ + uint8_t carry = !vm ? vext_elem_mask(v0, i) : 0; \ \ vext_set_elem_mask(vd, i, \ DO_OP(s2, (ETYPE)(target_long)s1, carry)); \ } \ - for (; i < vlmax; i++) { \ - vext_set_elem_mask(vd, i, 0); \ + if (vta == 1) { \ + for (; i < vlmax; i++) { \ + vext_set_elem_mask(vd, i, 1); \ + } \ } \ }