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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/114800] DSE does not remove set-zero which is partial redundant Date: Mon, 22 Apr 2024 23:35:00 +0000 [thread overview] Message-ID: <bug-114800-4-hnMSUsiYN4@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-114800-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114800 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|redundant set-zero when |DSE does not remove |initiate a struct |set-zero which is partial | |redundant --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- here is a testcase which shows the problem with when either front-ends: ``` struct thresh_restart { int *f0; int f1; int f2; int f3; }; int arr[10]; void __attribute__((noinline)) foo(struct thresh_restart *p) { arr[0] = p->f3; arr[1] = p->f1; } void func(int *b) { struct thresh_restart tr = {}; tr.f3 = 3; tr.f1 = 1; foo(&tr); } ```
next prev parent reply other threads:[~2024-04-22 23:35 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-04-22 8:27 [Bug rtl-optimization/114800] New: redundant set-zero when initiate a struct absoler at smail dot nju.edu.cn 2024-04-22 9:10 ` [Bug rtl-optimization/114800] " xry111 at gcc dot gnu.org 2024-04-22 23:33 ` [Bug tree-optimization/114800] " pinskia at gcc dot gnu.org 2024-04-22 23:35 ` pinskia at gcc dot gnu.org [this message] 2024-04-22 23:40 ` [Bug tree-optimization/114800] DSE does not remove set-zero which is partial redundant with respect to mod-ref pinskia at gcc dot gnu.org
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