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From: "linkw at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/112778] ICE in ppc64-linux-gnu crosscompiler in store_by_pieces since r14-5946-g1ff6d9f7428b06 Date: Fri, 01 Dec 2023 06:46:18 +0000 [thread overview] Message-ID: <bug-112778-4-3coltx5WkC@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-112778-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112778 Kewen Lin <linkw at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |aoliva at gcc dot gnu.org, | |bergner at gcc dot gnu.org, | |linkw at gcc dot gnu.org, | |segher at gcc dot gnu.org Ever confirmed|0 |1 Status|UNCONFIRMED |NEW Summary|ICE in ppc64-linux-gnu |ICE in ppc64-linux-gnu |crosscompiler in |crosscompiler in |store_by_pieces, at |store_by_pieces since |expr.cc:1820 |r14-5946-g1ff6d9f7428b06 Keywords|needs-bisection | Last reconfirmed| |2023-12-01 --- Comment #1 from Kewen Lin <linkw at gcc dot gnu.org> --- Confirmed, thanks for reporting, it starts from r14-5946-g1ff6d9f7428b06. It looks function try_store_by_multiple_pieces has the wrong assumption. For the code "memset (buf, 'v', 3)", it checks + if (max_bits < orig_max_bits + && xlenest + blksize >= xlenest + && can_store_by_pieces (xlenest + blksize, + builtin_memset_read_str, + &valc, align, true)) , succeeds and breaks. later it goes with blksize: to = store_by_pieces (to, blksize, constfun, constfundata, align, true, max_len != 0 ? RETURN_END : RETURN_BEGIN); and fails at targetm.use_by_pieces_infrastructure_p assertion. It's concluded that can_store_by_pieces (xlenest + blksize, ...) doesn't necessarily means can_store_by_pieces (blksize, ...).
next prev parent reply other threads:[~2023-12-01 6:46 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-11-30 10:53 [Bug target/112778] New: [14 Regression] ICE in ppc64-linux-gnu crosscompiler in store_by_pieces, at expr.cc:1820 fkastl at suse dot cz 2023-12-01 6:46 ` linkw at gcc dot gnu.org [this message] 2023-12-09 3:00 ` [Bug target/112778] ICE in ppc64-linux-gnu crosscompiler in store_by_pieces since r14-5946-g1ff6d9f7428b06 aoliva at gcc dot gnu.org 2023-12-11 18:32 ` cvs-commit at gcc dot gnu.org 2023-12-11 18:47 ` aoliva at gcc dot gnu.org 2023-12-21 6:21 ` cvs-commit at gcc dot gnu.org
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