| Message ID | 20200109160300.26150-58-jthierry@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show
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[81.140.166.164]) by smtp.gmail.com with ESMTPSA id y17sm2820948wma.36.2020.01.09.08.10.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Jan 2020 08:10:12 -0800 (PST) From: Julien Thierry <jthierry@redhat.com> To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [RFC v5 57/57] arm64: crypto: Remove redundant branch Date: Thu, 9 Jan 2020 16:03:00 +0000 Message-Id: <20200109160300.26150-58-jthierry@redhat.com> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200109160300.26150-1-jthierry@redhat.com> References: <20200109160300.26150-1-jthierry@redhat.com> MIME-Version: 1.0 X-MC-Unique: 8yvO9ik2O5WwptoBeeNTBA-1 X-Mimecast-Spam-Score: 0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200109_081019_049259_1A6CC3CF X-CRM114-Status: GOOD ( 11.35 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [205.139.110.61 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: <linux-arm-kernel.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/> List-Post: <mailto:linux-arm-kernel@lists.infradead.org> List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> Cc: Julien Thierry <jthierry@redhat.com>, peterz@infradead.org, catalin.marinas@arm.com, raphael.gault@arm.com, jpoimboe@redhat.com, will@kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org |
| Series |
objtool: Add support for arm64
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expand
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diff --git a/arch/arm64/crypto/sha1-ce-core.S b/arch/arm64/crypto/sha1-ce-core.S index c2ce1f820706..50ca9d11a61f 100644 --- a/arch/arm64/crypto/sha1-ce-core.S +++ b/arch/arm64/crypto/sha1-ce-core.S @@ -132,8 +132,7 @@ CPU_LE( rev32 v11.16b, v11.16b ) st1 {dgav.4s}, [x19] str dgb, [x19, #16] do_cond_yield_neon - b 0b - endif_yield_neon + endif_yield_neon 0b b 1b diff --git a/arch/arm64/crypto/sha2-ce-core.S b/arch/arm64/crypto/sha2-ce-core.S index 6f728a419009..c64716f5de19 100644 --- a/arch/arm64/crypto/sha2-ce-core.S +++ b/arch/arm64/crypto/sha2-ce-core.S @@ -139,8 +139,7 @@ CPU_LE( rev32 v19.16b, v19.16b ) if_will_cond_yield_neon st1 {dgav.4s, dgbv.4s}, [x19] do_cond_yield_neon - b 0b - endif_yield_neon + endif_yield_neon 0b b 1b diff --git a/arch/arm64/crypto/sha3-ce-core.S b/arch/arm64/crypto/sha3-ce-core.S index a7d587fa54f6..2448d8dec0de 100644 --- a/arch/arm64/crypto/sha3-ce-core.S +++ b/arch/arm64/crypto/sha3-ce-core.S @@ -203,8 +203,7 @@ ENTRY(sha3_ce_transform) st1 {v20.1d-v23.1d}, [x8], #32 st1 {v24.1d}, [x8] do_cond_yield_neon - b 0b - endif_yield_neon + endif_yield_neon 0b b 1b diff --git a/arch/arm64/crypto/sha512-ce-core.S b/arch/arm64/crypto/sha512-ce-core.S index ce65e3abe4f2..703724703f8f 100644 --- a/arch/arm64/crypto/sha512-ce-core.S +++ b/arch/arm64/crypto/sha512-ce-core.S @@ -207,8 +207,7 @@ CPU_LE( rev64 v19.16b, v19.16b ) if_will_cond_yield_neon st1 {v8.2d-v11.2d}, [x19] do_cond_yield_neon - b 0b - endif_yield_neon + endif_yield_neon 0b b 1b
Having a unconditional branch between the macros do_cond_yield_neon and endif_yeild_neon causes the endif_yeild_neon to be unreachable. It so happens that endif_yeild_neon expands to a branch and already allows to provide the label to jump to after the yeild. Get rid of the redundant branch instruction. Signed-off-by: Julien Thierry <jthierry@redhat.com> --- arch/arm64/crypto/sha1-ce-core.S | 3 +-- arch/arm64/crypto/sha2-ce-core.S | 3 +-- arch/arm64/crypto/sha3-ce-core.S | 3 +-- arch/arm64/crypto/sha512-ce-core.S | 3 +-- 4 files changed, 4 insertions(+), 8 deletions(-)