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Wed, 27 Mar 2024 07:53:51 +0000 (GMT) Message-ID: Date: Wed, 27 Mar 2024 15:53:51 +0800 User-Agent: Mozilla Thunderbird Content-Language: en-US To: gcc-patches Cc: Segher Boessenkool , David , "Kewen.Lin" , Peter Bergner From: HAO CHEN GUI Subject: [Patch] Builtin: Fold builtin_isinf on IBM long double to builtin_isinf on double [PR97786] X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: j4u_ItBDGpFNAv5hCPPZ6FXGXB9vDZQ8 X-Proofpoint-GUID: -gXUHPxsogXty2vyGGyuG3sExmEF1ZLd X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-27_04,2024-03-21_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 suspectscore=0 clxscore=1015 mlxlogscore=893 spamscore=0 adultscore=0 phishscore=0 mlxscore=0 lowpriorityscore=0 bulkscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2403210000 definitions=main-2403270053 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_H4, RCVD_IN_MSPIKE_WL, 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: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces+patchwork=sourceware.org@gcc.gnu.org Hi, This patch folds builtin_isinf on IBM long double to builtin_isinf on double type. The former patch https://gcc.gnu.org/pipermail/gcc-patches/2024-March/648304.html implemented the DFmode isinf_optab. Bootstrapped and tested on powerpc64-linux BE and LE with no regressions. Is it OK for next stage 1? Thanks Gui Haochen ChangeLog Builtin: Fold builtin_isinf on IBM long double to builtin_isinf on double For IBM long double, Inf is encoded in the high-order double value only. So the builtin_isinf on IBM long double can be folded to builtin_isinf on double type. As former patch implemented DFmode isinf_optab, this patch converts builtin_isinf on IBM long double to builtin_isinf on double type if the DFmode isinf_optab exists. gcc/ PR target/97786 * builtins.cc (fold_builtin_interclass_mathfn): Fold IBM long double isinf call to double isinf call when DFmode isinf_optab exists. gcc/testsuite/ PR target/97786 * gcc.target/powerpc/pr97786-3.c: New test. patch.diff diff --git a/gcc/builtins.cc b/gcc/builtins.cc index eda8bea9c4b..d2786f207b8 100644 --- a/gcc/builtins.cc +++ b/gcc/builtins.cc @@ -9574,6 +9574,12 @@ fold_builtin_interclass_mathfn (location_t loc, tree fndecl, tree arg) type = double_type_node; mode = DFmode; arg = fold_build1_loc (loc, NOP_EXPR, type, arg); + tree const isinf_fn = builtin_decl_explicit (BUILT_IN_ISINF); + if (interclass_mathfn_icode (arg, isinf_fn) != CODE_FOR_nothing) + { + result = build_call_expr (isinf_fn, 1, arg); + return result; + } } get_max_float (REAL_MODE_FORMAT (mode), buf, sizeof (buf), false); real_from_string (&r, buf); diff --git a/gcc/testsuite/gcc.target/powerpc/pr97786-3.c b/gcc/testsuite/gcc.target/powerpc/pr97786-3.c new file mode 100644 index 00000000000..1c816921e1a --- /dev/null +++ b/gcc/testsuite/gcc.target/powerpc/pr97786-3.c @@ -0,0 +1,17 @@ +/* { dg-do compile { target lp64 } } */ +/* { dg-require-effective-target ppc_float128_sw } */ +/* { dg-require-effective-target powerpc_vsx_ok } */ +/* { dg-options "-O2 -mdejagnu-cpu=power9 -mvsx -mabi=ibmlongdouble -Wno-psabi" } */ + +int test1 (long double x) +{ + return __builtin_isinf (x); +} + +int test2 (long double x) +{ + return __builtin_isinfl (x); +} + +/* { dg-final { scan-assembler-not {\mfcmpu\M} } } */ +/* { dg-final { scan-assembler-times {\mxststdcdp\M} 2 } } */