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[46.193.226.34]) by smtp.gmail.com with ESMTPSA id j22-20020a5d6e56000000b002fbb285b01fsm9997852wrz.25.2023.04.23.22.41.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 23 Apr 2023 22:41:06 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, qemu-s390x@nongnu.org, qemu-riscv@nongnu.org, qemu-ppc@nongnu.org, git@xen0n.name, jiaxun.yang@flygoat.com Subject: [PATCH v3 01/57] tcg/loongarch64: Conditionalize tcg_out_exts_i32_i64 Date: Mon, 24 Apr 2023 06:40:09 +0100 Message-Id: <20230424054105.1579315-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230424054105.1579315-1-richard.henderson@linaro.org> References: <20230424054105.1579315-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::430; envelope-from=richard.henderson@linaro.org; helo=mail-wr1-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, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable 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 Since TCG_TYPE_I32 values are kept sign-extended in registers, via ".w" instructions, we need not extend if the register matches. This is already relied upon by comparisons. Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé --- tcg/loongarch64/tcg-target.c.inc | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc index 21c2fc9e98..0940788c6f 100644 --- a/tcg/loongarch64/tcg-target.c.inc +++ b/tcg/loongarch64/tcg-target.c.inc @@ -463,7 +463,9 @@ static void tcg_out_ext32s(TCGContext *s, TCGReg ret, TCGReg arg) static void tcg_out_exts_i32_i64(TCGContext *s, TCGReg ret, TCGReg arg) { - tcg_out_ext32s(s, ret, arg); + if (ret != arg) { + tcg_out_ext32s(s, ret, arg); + } } static void tcg_out_extu_i32_i64(TCGContext *s, TCGReg ret, TCGReg arg)