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[71.212.39.66]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-220d5596115sm60198415ad.258.2025.02.16.15.10.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 16 Feb 2025 15:10:19 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Subject: [PATCH v3 008/162] tcg/optimize: Fold andc with immediate to and Date: Sun, 16 Feb 2025 15:07:37 -0800 Message-ID: <20250216231012.2808572-9-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250216231012.2808572-1-richard.henderson@linaro.org> References: <20250216231012.2808572-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::629; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x629.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 Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson --- tcg/optimize.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/tcg/optimize.c b/tcg/optimize.c index f217ed9366..0b84d97051 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -1331,6 +1331,25 @@ static bool fold_andc(OptContext *ctx, TCGOp *op) t2 = arg_info(op->args[2]); z_mask = t1->z_mask; + if (ti_is_const(t2)) { + /* Fold andc r,x,i to and r,x,~i. */ + switch (ctx->type) { + case TCG_TYPE_I32: + case TCG_TYPE_I64: + op->opc = INDEX_op_and; + break; + case TCG_TYPE_V64: + case TCG_TYPE_V128: + case TCG_TYPE_V256: + op->opc = INDEX_op_and_vec; + break; + default: + g_assert_not_reached(); + } + op->args[2] = arg_new_constant(ctx, ~ti_const_val(t2)); + return fold_and(ctx, op); + } + /* * Known-zeros does not imply known-ones. Therefore unless * arg2 is constant, we can't infer anything from it.