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[97.126.112.211]) by smtp.gmail.com with ESMTPSA id g23-v6sm9460451pgv.26.2018.07.05.12.19.33 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 05 Jul 2018 12:19:34 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Thu, 5 Jul 2018 12:19:29 -0700 Message-Id: <20180705191929.30773-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180705191929.30773-1-richard.henderson@linaro.org> References: <20180705191929.30773-1-richard.henderson@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400e:c01::242 Subject: [Qemu-devel] [PATCH 2/2] target/arm: Fix do_predset for large VL 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: , Cc: peter.maydell@linaro.org, alex.bennee@linaro.org Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" Use MAKE_64BIT_MASK instead of open-coding. Remove an odd vector size check that is unlikely to be more profitable than 3 64-bit integer stores. Correct the iteration for WORD to avoid writing too much data. Fixes RISU tests of PTRUE for VL 256. Signed-off-by: Richard Henderson --- target/arm/translate-sve.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) -- 2.17.1 Reviewed-by: Alex Bennée Tested-by: Alex Bennée diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index d41f1155f9..374051cd20 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -1438,7 +1438,7 @@ static bool do_predset(DisasContext *s, int esz, int rd, int pat, bool setflag) setsz = numelem << esz; lastword = word = pred_esz_masks[esz]; if (setsz % 64) { - lastword &= ~(-1ull << (setsz % 64)); + lastword &= MAKE_64BIT_MASK(0, setsz % 64); } } @@ -1457,19 +1457,13 @@ static bool do_predset(DisasContext *s, int esz, int rd, int pat, bool setflag) tcg_gen_gvec_dup64i(ofs, oprsz, maxsz, word); goto done; } - if (oprsz * 8 == setsz + 8) { - tcg_gen_gvec_dup64i(ofs, oprsz, maxsz, word); - tcg_gen_movi_i64(t, 0); - tcg_gen_st_i64(t, cpu_env, ofs + oprsz - 8); - goto done; - } } setsz /= 8; fullsz /= 8; tcg_gen_movi_i64(t, word); - for (i = 0; i < setsz; i += 8) { + for (i = 0; i < QEMU_ALIGN_DOWN(setsz, 8); i += 8) { tcg_gen_st_i64(t, cpu_env, ofs + i); } if (lastword != word) {