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Thu, 1 Dec 2022 01:36:21 +0000 (GMT) To: gcc-patches@gcc.gnu.org Cc: segher@kernel.crashing.org, dje.gcc@gmail.com, linkw@gcc.gnu.org, guojiufu@linux.ibm.com Subject: [PATCH 3/3]rs6000: NFC no need copy_rtx in rs6000_emit_set_long_const and rs6000_emit_set_const Date: Thu, 1 Dec 2022 09:36:19 +0800 Message-Id: <20221201013619.196004-3-guojiufu@linux.ibm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221201013619.196004-1-guojiufu@linux.ibm.com> References: <20221201013619.196004-1-guojiufu@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: XWysbaztaOKR0PUdtxP8mnL-I8R8gn8s X-Proofpoint-GUID: rRfW7rqKhQXTX65qG9NlyJ0GpjhTnE0b X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-11-30_04,2022-11-30_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 priorityscore=1501 suspectscore=0 mlxscore=0 clxscore=1015 spamscore=0 malwarescore=0 bulkscore=0 phishscore=0 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2212010007 X-Spam-Status: No, score=-11.9 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_EF, GIT_PATCH_0, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) 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: Jiufu Guo via Gcc-patches From: Jiufu Guo Reply-To: Jiufu Guo Errors-To: gcc-patches-bounces+patchwork=sourceware.org@gcc.gnu.org Sender: "Gcc-patches" Hi, Function rs6000_emit_set_const/rs6000_emit_set_long_const are only invoked from two "define_split"s where the target operand is limited to gpc_reg_operand or int_reg_operand, then the operand must be REG_P. And in rs6000_emit_set_const/rs6000_emit_set_long_const, to create temp rtx, it is using code like "gen_reg_rtx({S|D}Imode)", it must also be REG_P. So, copy_rtx is not needed for temp and dest. This patch removes those "copy_rtx" for rs6000_emit_set_const and rs6000_emit_set_long_const. Bootstrap & regtest pass on ppc64{,le}. Is this ok for trunk? BR, Jeff (Jiufu) gcc/ChangeLog: * config/rs6000/rs6000.cc (rs6000_emit_set_const): Remove copy_rtx. (rs6000_emit_set_long_const): Likewise. --- gcc/config/rs6000/rs6000.cc | 58 +++++++++++++------------------------ 1 file changed, 20 insertions(+), 38 deletions(-) diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc index 718072cc9a1..1a51b79ebfe 100644 --- a/gcc/config/rs6000/rs6000.cc +++ b/gcc/config/rs6000/rs6000.cc @@ -10186,10 +10186,9 @@ rs6000_emit_set_const (rtx dest, rtx source) case E_SImode: temp = !can_create_pseudo_p () ? dest : gen_reg_rtx (SImode); - emit_insn (gen_rtx_SET (copy_rtx (temp), - GEN_INT (c & ~(HOST_WIDE_INT) 0xffff))); + emit_insn (gen_rtx_SET (temp, GEN_INT (c & ~(HOST_WIDE_INT) 0xffff))); emit_insn (gen_rtx_SET (dest, - gen_rtx_IOR (SImode, copy_rtx (temp), + gen_rtx_IOR (SImode, temp, GEN_INT (c & 0xffff)))); break; @@ -10198,10 +10197,8 @@ rs6000_emit_set_const (rtx dest, rtx source) { rtx hi, lo; - hi = operand_subword_force (copy_rtx (dest), WORDS_BIG_ENDIAN == 0, - DImode); - lo = operand_subword_force (dest, WORDS_BIG_ENDIAN != 0, - DImode); + hi = operand_subword_force (dest, WORDS_BIG_ENDIAN == 0, DImode); + lo = operand_subword_force (dest, WORDS_BIG_ENDIAN != 0, DImode); emit_move_insn (hi, GEN_INT (c >> 32)); c = sext_hwi (c, 32); emit_move_insn (lo, GEN_INT (c)); @@ -10249,23 +10246,19 @@ rs6000_emit_set_long_const (rtx dest, HOST_WIDE_INT c) { temp = !can_create_pseudo_p () ? dest : gen_reg_rtx (DImode); - emit_move_insn (ud1 != 0 ? copy_rtx (temp) : dest, + emit_move_insn (ud1 != 0 ? temp : dest, GEN_INT (sext_hwi (ud2 << 16, 32))); if (ud1 != 0) - emit_move_insn (dest, - gen_rtx_IOR (DImode, copy_rtx (temp), - GEN_INT (ud1))); + emit_move_insn (dest, gen_rtx_IOR (DImode, temp, GEN_INT (ud1))); } else if (ud3 == 0 && ud4 == 0) { temp = !can_create_pseudo_p () ? dest : gen_reg_rtx (DImode); gcc_assert (ud2 & 0x8000); - emit_move_insn (copy_rtx (temp), GEN_INT (sext_hwi (ud2 << 16, 32))); + emit_move_insn (temp, GEN_INT (sext_hwi (ud2 << 16, 32))); if (ud1 != 0) - emit_move_insn (copy_rtx (temp), - gen_rtx_IOR (DImode, copy_rtx (temp), - GEN_INT (ud1))); + emit_move_insn (temp, gen_rtx_IOR (DImode, temp, GEN_INT (ud1))); emit_move_insn (dest, gen_rtx_AND (DImode, temp, GEN_INT (0xffffffff))); } else if (ud1 == ud3 && ud2 == ud4) @@ -10282,18 +10275,13 @@ rs6000_emit_set_long_const (rtx dest, HOST_WIDE_INT c) { temp = !can_create_pseudo_p () ? dest : gen_reg_rtx (DImode); - emit_move_insn (copy_rtx (temp), GEN_INT (sext_hwi (ud3 << 16, 32))); + emit_move_insn (temp, GEN_INT (sext_hwi (ud3 << 16, 32))); if (ud2 != 0) - emit_move_insn (copy_rtx (temp), - gen_rtx_IOR (DImode, copy_rtx (temp), - GEN_INT (ud2))); - emit_move_insn (ud1 != 0 ? copy_rtx (temp) : dest, - gen_rtx_ASHIFT (DImode, copy_rtx (temp), - GEN_INT (16))); + emit_move_insn (temp, gen_rtx_IOR (DImode, temp, GEN_INT (ud2))); + emit_move_insn (ud1 != 0 ? temp : dest, + gen_rtx_ASHIFT (DImode, temp, GEN_INT (16))); if (ud1 != 0) - emit_move_insn (dest, - gen_rtx_IOR (DImode, copy_rtx (temp), - GEN_INT (ud1))); + emit_move_insn (dest, gen_rtx_IOR (DImode, temp, GEN_INT (ud1))); } else if (TARGET_PREFIXED) { @@ -10334,23 +10322,17 @@ rs6000_emit_set_long_const (rtx dest, HOST_WIDE_INT c) { temp = !can_create_pseudo_p () ? dest : gen_reg_rtx (DImode); - emit_move_insn (copy_rtx (temp), GEN_INT (sext_hwi (ud4 << 16, 32))); + emit_move_insn (temp, GEN_INT (sext_hwi (ud4 << 16, 32))); if (ud3 != 0) - emit_move_insn (copy_rtx (temp), - gen_rtx_IOR (DImode, copy_rtx (temp), - GEN_INT (ud3))); + emit_move_insn (temp, gen_rtx_IOR (DImode, temp, GEN_INT (ud3))); - emit_move_insn (ud2 != 0 || ud1 != 0 ? copy_rtx (temp) : dest, - gen_rtx_ASHIFT (DImode, copy_rtx (temp), - GEN_INT (32))); + emit_move_insn (ud2 != 0 || ud1 != 0 ? temp : dest, + gen_rtx_ASHIFT (DImode, temp, GEN_INT (32))); if (ud2 != 0) - emit_move_insn (ud1 != 0 ? copy_rtx (temp) : dest, - gen_rtx_IOR (DImode, copy_rtx (temp), - GEN_INT (ud2 << 16))); + emit_move_insn (ud1 != 0 ? temp : dest, + gen_rtx_IOR (DImode, temp, GEN_INT (ud2 << 16))); if (ud1 != 0) - emit_move_insn (dest, - gen_rtx_IOR (DImode, copy_rtx (temp), - GEN_INT (ud1))); + emit_move_insn (dest, gen_rtx_IOR (DImode, temp, GEN_INT (ud1))); } }