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From: "qrzhang at gatech dot edu" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/101501] New: wrong code at -O3 on x86_64-linux-gnu Date: Sun, 18 Jul 2021 22:50:36 +0000 [thread overview] Message-ID: <bug-101501-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101501 Bug ID: 101501 Summary: wrong code at -O3 on x86_64-linux-gnu Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: qrzhang at gatech dot edu Target Milestone: --- It appears to be a recent regression. Gcc-10 works fine. $ gcc-trunk -v gcc version 12.0.0 20210718 (experimental) [master revision 0103d18dfc9:a1cef02c5e3:853921378bfa149353b4e1c7dde5c02f80072ad7] (GCC) $ gcc-trunk abc.c ; ./a.out -1 $ gcc-trunk -O3 abc.c ; ./a.out 40 $ cat abc.c char a = 55; int main() { int b; char c; d: c = a-- * 52; b = 3L * c; if (b) goto d; printf("%d\n", a); }
next reply other threads:[~2021-07-18 22:50 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-18 22:50 qrzhang at gatech dot edu [this message] 2021-07-18 22:51 ` [Bug tree-optimization/101501] " qrzhang at gatech dot edu 2021-07-18 23:01 ` [Bug tree-optimization/101501] [11/12 Regression] " pinskia at gcc dot gnu.org 2021-07-19 3:40 ` glisse at gcc dot gnu.org 2021-07-19 6:39 ` rguenth at gcc dot gnu.org 2021-07-22 7:19 ` rguenth at gcc dot gnu.org 2021-07-22 8:07 ` rguenth at gcc dot gnu.org 2021-07-22 8:09 ` rguenth at gcc dot gnu.org
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