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([2602:47:d483:7301:2c08:e710:4459:46f1]) by smtp.gmail.com with ESMTPSA id e16-20020a17090301d000b001ab2b4105ddsm7234549plh.60.2023.08.21.09.19.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Aug 2023 09:19:10 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: berrange@redhat.com, ardb@kernel.org, =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= Subject: [PATCH v3 17/19] target/ppc: Use clmul_64 Date: Mon, 21 Aug 2023 09:18:51 -0700 Message-Id: <20230821161854.419893-18-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230821161854.419893-1-richard.henderson@linaro.org> References: <20230821161854.419893-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::430; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x430.google.com 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 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org Use generic routine for 64-bit carry-less multiply. Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson --- target/ppc/int_helper.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-) diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index ce793cf163..432834c7d5 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -1456,20 +1456,9 @@ void helper_vpmsumw(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) void helper_VPMSUMD(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) { - int i, j; - Int128 tmp, prod[2] = {int128_zero(), int128_zero()}; - - for (j = 0; j < 64; j++) { - for (i = 0; i < ARRAY_SIZE(r->u64); i++) { - if (a->VsrD(i) & (1ull << j)) { - tmp = int128_make64(b->VsrD(i)); - tmp = int128_lshift(tmp, j); - prod[i] = int128_xor(prod[i], tmp); - } - } - } - - r->s128 = int128_xor(prod[0], prod[1]); + Int128 e = clmul_64(a->u64[0], b->u64[0]); + Int128 o = clmul_64(a->u64[1], b->u64[1]); + r->s128 = int128_xor(e, o); } #if HOST_BIG_ENDIAN