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From: "acoplan at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/103690] [12 Regression] ICE: in build2, at tree.c:4985 with -g -O2 -fno-tree-dce -fno-tree-dse -fno-tree-fre --param=max-jump-thread-duplication-stmts=94 since r12-2591-g2e96b5f14e402569 Date: Wed, 15 Dec 2021 20:05:24 +0000 [thread overview] Message-ID: <bug-103690-4-VkBiCxA55d@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-103690-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103690 Alex Coplan <acoplan at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |acoplan at gcc dot gnu.org --- Comment #4 from Alex Coplan <acoplan at gcc dot gnu.org> --- Here's a slightly cleaned up testcase which fails with the same options FWIW: typedef int *int_ptr; struct __normal_iterator { int *_M_current; __normal_iterator(const int_ptr &__i) : _M_current(__i) {} void foo() { __normal_iterator(_M_current - 1); } }; void deallocate(int *); struct vector { int *_M_start; int *_M_finish; __normal_iterator end() { return _M_finish; } int back() { __normal_iterator t = _M_finish; t.foo(); } void foo(); }; int *p1, *p2; int last, result; void vector::foo() { for (int i; i;) while (i) { __normal_iterator t1 = end(); int *p3, *__old_start = _M_start, *__new_finish; long __count = &last - __old_start; if (__count > 0) __builtin_memmove(&result, __old_start, __count); p1 = &result + __count; p2 = p1 + 1; __count = _M_finish - t1._M_current; if (__count) __builtin_memmove(p2, t1._M_current, __count); p3 = p2 + __count; __new_finish = p3; if (__old_start) deallocate(__old_start); _M_finish = __new_finish; back(); } } also confirmed on aarch64-linux-gnu.
next prev parent reply other threads:[~2021-12-15 20:05 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-12-13 19:26 [Bug tree-optimization/103690] New: [12 Regression] ICE: in build2, at tree.c:4985 with -O2 -fno-tree-dce -fno-tree-dse -fno-tree-fre --param=max-jump-thread-duplication-stmts=94 zsojka at seznam dot cz 2021-12-13 22:30 ` [Bug tree-optimization/103690] [12 Regression] ICE: in build2, at tree.c:4985 with -g " pinskia at gcc dot gnu.org 2021-12-13 22:51 ` pinskia at gcc dot gnu.org 2021-12-13 23:02 ` pinskia at gcc dot gnu.org 2021-12-14 10:03 ` [Bug tree-optimization/103690] [12 Regression] ICE: in build2, at tree.c:4985 with -g -O2 -fno-tree-dce -fno-tree-dse -fno-tree-fre --param=max-jump-thread-duplication-stmts=94 since r12-2591-g2e96b5f14e402569 marxin at gcc dot gnu.org 2021-12-15 20:05 ` acoplan at gcc dot gnu.org [this message] 2021-12-16 17:17 ` aldyh at gcc dot gnu.org 2022-01-04 10:21 ` rguenth at gcc dot gnu.org 2022-01-04 12:17 ` cvs-commit at gcc dot gnu.org 2022-01-04 12:17 ` rguenth at gcc dot gnu.org
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