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[97.126.123.70]) by smtp.gmail.com with ESMTPSA id c83sm6772831pfb.44.2020.03.20.19.42.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Mar 2020 19:42:39 -0700 (PDT) To: gcc-patches@gcc.gnu.org Subject: [PATCH v2 5/9] aarch64: Provide expander for sub3_compare1 Date: Fri, 20 Mar 2020 19:42:27 -0700 Message-Id: <20200321024231.13778-6-richard.henderson@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200321024231.13778-1-richard.henderson@linaro.org> References: <20200321024231.13778-1-richard.henderson@linaro.org> MIME-Version: 1.0 X-Spam-Status: No, score=-26.6 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_NUMSUBJECT, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Richard Henderson via Gcc-patches From: "Li, Pan2 via Gcc-patches" Reply-To: Richard Henderson Cc: richard.earnshaw@arm.com, Wilco.Dijkstra@arm.com, marcus.shawcroft@arm.com Errors-To: gcc-patches-bounces@gcc.gnu.org Sender: "Gcc-patches" In a couple of places we open-code a special case of this pattern into the more specific sub3_compare1_imm. Centralize that special case into an expander. * config/aarch64/aarch64.md (*sub3_compare1): Rename from sub3_compare1. (sub3_compare1): New expander. --- gcc/config/aarch64/aarch64.md | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/gcc/config/aarch64/aarch64.md b/gcc/config/aarch64/aarch64.md index 076158b0071..47eeba7311c 100644 --- a/gcc/config/aarch64/aarch64.md +++ b/gcc/config/aarch64/aarch64.md @@ -3120,7 +3120,7 @@ [(set_attr "type" "alus_imm")] ) -(define_insn "sub3_compare1" +(define_insn "*sub3_compare1" [(set (reg:CC CC_REGNUM) (compare:CC (match_operand:GPI 1 "aarch64_reg_or_zero" "rkZ") @@ -3132,6 +3132,26 @@ [(set_attr "type" "alus_sreg")] ) +(define_expand "sub3_compare1" + [(parallel + [(set (reg:CC CC_REGNUM) + (compare:CC + (match_operand:GPI 1 "aarch64_reg_or_zero") + (match_operand:GPI 2 "aarch64_reg_or_imm"))) + (set (match_operand:GPI 0 "register_operand") + (minus:GPI (match_dup 1) (match_dup 2)))])] + "" +{ + if (aarch64_plus_immediate (operands[2], mode)) + { + emit_insn (gen_sub3_compare1_imm + (operands[0], operands[1], operands[2], + GEN_INT (-INTVAL (operands[2])))); + DONE; + } + operands[2] = force_reg (mode, operands[2]); +}) + (define_peephole2 [(set (match_operand:GPI 0 "aarch64_general_reg") (minus:GPI (match_operand:GPI 1 "aarch64_reg_or_zero")