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Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.4.0 Content-Language: en-US To: gcc-patches Subject: [PATCH, rs6000] new split pattern for TI to V1TI move [PR103124] X-TM-AS-GCONF: 00 X-Proofpoint-GUID: QHboga5Xt4xt4Vme-PAcoRIKe9vrho5S X-Proofpoint-ORIG-GUID: 2U27zgpWzVpu-HqabrY36K6dX6-63fng X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2021-12-16_09,2021-12-16_01,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 mlxscore=0 lowpriorityscore=0 phishscore=0 adultscore=0 spamscore=0 priorityscore=1501 bulkscore=0 mlxlogscore=999 malwarescore=0 suspectscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2112170007 X-Spam-Status: No, score=-12.7 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) 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: HAO CHEN GUI via Gcc-patches From: HAO CHEN GUI Reply-To: HAO CHEN GUI Cc: Bill Schmidt , David , Segher Boessenkool Errors-To: gcc-patches-bounces+patchwork=sourceware.org@gcc.gnu.org Sender: "Gcc-patches" Hi, This patch defines a new split pattern for TI to V1TI move. The pattern concatenates two subreg:DI of a TI to a V2DI. With the pattern, the subreg pass can do register split for TI when there is a TI to V1TI move. The patch optimizes one unnecessary "mr" out on P9. The new test case illustrates it. Bootstrapped and tested on powerpc64-linux BE and LE with no regressions. Is this okay for trunk? Any recommendations? Thanks a lot. ChangeLog 2021-12-13 Haochen Gui gcc/ * config/rs6000/vsx.md (split pattern for TI to V1TI move): Defined. gcc/testsuite/ * gcc.target/powerpc/pr103124.c: New testcase. patch.diff diff --git a/gcc/config/rs6000/vsx.md b/gcc/config/rs6000/vsx.md index bf033e31c1c..52968eb4609 100644 --- a/gcc/config/rs6000/vsx.md +++ b/gcc/config/rs6000/vsx.md @@ -6589,3 +6589,19 @@ (define_insn "xxeval" [(set_attr "type" "vecperm") (set_attr "prefixed" "yes")]) +;; Construct V1TI by vsx_concat_v2di +(define_split + [(set (match_operand:V1TI 0 "vsx_register_operand") + (subreg:V1TI + (match_operand:TI 1 "int_reg_operand") 0 ))] + "TARGET_P9_VECTOR && !reload_completed" + [(const_int 0)] +{ + rtx tmp1 = simplify_gen_subreg (DImode, operands[1], TImode, 0); + rtx tmp2 = simplify_gen_subreg (DImode, operands[1], TImode, 8); + rtx tmp3 = gen_reg_rtx (V2DImode); + emit_insn (gen_vsx_concat_v2di (tmp3, tmp1, tmp2)); + rtx tmp4 = simplify_gen_subreg (V1TImode, tmp3, V2DImode, 0); + emit_move_insn (operands[0], tmp4); + DONE; +}) diff --git a/gcc/testsuite/gcc.target/powerpc/pr103124.c b/gcc/testsuite/gcc.target/powerpc/pr103124.c new file mode 100644 index 00000000000..e9072d19b8e --- /dev/null +++ b/gcc/testsuite/gcc.target/powerpc/pr103124.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ +/* { dg-require-effective-target powerpc_p9vector_ok } */ +/* { dg-require-effective-target int128 } */ +/* { dg-options "-O2 -mdejagnu-cpu=power9" } */ +/* { dg-final { scan-assembler-not "\mmr\M" } } */ + +vector __int128 add (long long a) +{ + vector __int128 b; + b = (vector __int128) {a}; + return b; +}