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[2.142.241.104]) by smtp.gmail.com with ESMTPSA id o4sm27644292wry.80.2021.11.10.04.20.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Nov 2021 04:20:17 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH] tcg: Document ctpop opcodes Date: Wed, 10 Nov 2021 13:20:15 +0100 Message-Id: <20211110122015.189655-1-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::436 (failed) Received-SPF: pass client-ip=2a00:1450:4864:20::436; envelope-from=richard.henderson@linaro.org; helo=mail-wr1-x436.google.com X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 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, PDS_HP_HELO_NORDNS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: , Cc: f4bug@amsat.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Fixes: a768e4e99247 Resolves: https://gitlab.com/qemu-project/qemu/-/issues/658 Signed-off-by: Richard Henderson --- tcg/README | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tcg/README b/tcg/README index c2e7762a37..391f4d1e80 100644 --- a/tcg/README +++ b/tcg/README @@ -254,6 +254,12 @@ t0 = t1 ? clz(t1) : t2 t0 = t1 ? ctz(t1) : t2 +* ctpop_i32/i64 t0, t1 + +t0 = number of bits set in t1 +With "ctpop" short for "count popultation", matching +the function name used in include/qemu/host-utils.h. + ********* Shifts/Rotates * shl_i32/i64 t0, t1, t2 -- 2.25.1