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[173.197.98.125]) by smtp.gmail.com with ESMTPSA id jx15-20020a17090b46cf00b0029baa0b1a6csm7492214pjb.24.2024.03.12.07.38.46 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Mar 2024 07:38:47 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH 03/15] tcg/optimize: Fold eqv with immediate to xor Date: Tue, 12 Mar 2024 04:38:27 -1000 Message-Id: <20240312143839.136408-4-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240312143839.136408-1-richard.henderson@linaro.org> References: <20240312143839.136408-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::102b; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102b.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=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 Signed-off-by: Richard Henderson --- tcg/optimize.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/tcg/optimize.c b/tcg/optimize.c index 5729433548..c6b0ab35c8 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -1687,6 +1687,15 @@ static bool fold_eqv(OptContext *ctx, TCGOp *op) return true; } + /* Fold eqv r,x,i to xor r,x,~i. */ + if (arg_is_const(op->args[2])) { + uint64_t val = ~arg_info(op->args[2])->val; + + op->opc = (ctx->type == TCG_TYPE_I32 + ? INDEX_op_xor_i32 : INDEX_op_xor_i64); + op->args[2] = arg_new_constant(ctx, val); + } + ctx->s_mask = arg_info(op->args[1])->s_mask & arg_info(op->args[2])->s_mask; return false;