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* [Bug tree-optimization/114796] New: wrong code at -O2 with "-fno-tree-fre -fno-inline -fselective-scheduling2" on x86_64-linux-gnu @ 2024-04-21 16:32 zhendong.su at inf dot ethz.ch 2024-04-21 19:56 ` [Bug tree-optimization/114796] [11/12/13/14 Regression] " hjl.tools at gmail dot com ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: zhendong.su at inf dot ethz.ch @ 2024-04-21 16:32 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114796 Bug ID: 114796 Summary: wrong code at -O2 with "-fno-tree-fre -fno-inline -fselective-scheduling2" 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: zhendong.su at inf dot ethz.ch Target Milestone: --- This seems quite long-latent and affects all versions 9.* and later. Compiler Explorer: https://godbolt.org/z/nKx6f4hjK [526] % gcctk -v Using built-in specs. COLLECT_GCC=gcctk COLLECT_LTO_WRAPPER=/local/suz-local/software/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/14.0.1/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-trunk/configure --disable-bootstrap --enable-checking=yes --prefix=/local/suz-local/software/local/gcc-trunk --enable-sanitizers --enable-languages=c,c++ --disable-werror --enable-multilib Thread model: posix Supported LTO compression algorithms: zlib gcc version 14.0.1 20240421 (experimental) (GCC) [527] % [527] % gcctk -O0 small.c [528] % ./a.out [529] % [529] % gcctk -O2 -fno-tree-fre -fno-inline -fselective-scheduling2 small.c [530] % ./a.out Aborted [531] % [531] % cat small.c int printf(const char *, ...); int a, b, c = -3, h, j, k; struct d { int e; char f; char g; }; int i, l, m; char n[10][9] = {{1}}; struct d o = {1,0,0}; unsigned p; void q(int s) { b = a; } void r() { k = 0; while (k) while (l) while (i) if (m) while (1) ; for (; p < 1; p++) { if (j) { q(n[j][c]); if (h) printf("\n"); } n[p][k] = 1; } } int main() { r(); if (o.g != 0) __builtin_abort(); return 0; } ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/114796] [11/12/13/14 Regression] wrong code at -O2 with "-fno-tree-fre -fno-inline -fselective-scheduling2" on x86_64-linux-gnu 2024-04-21 16:32 [Bug tree-optimization/114796] New: wrong code at -O2 with "-fno-tree-fre -fno-inline -fselective-scheduling2" on x86_64-linux-gnu zhendong.su at inf dot ethz.ch @ 2024-04-21 19:56 ` hjl.tools at gmail dot com 2024-04-21 20:00 ` [Bug rtl-optimization/114796] " pinskia at gcc dot gnu.org 2024-04-22 7:14 ` jakub at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: hjl.tools at gmail dot com @ 2024-04-21 19:56 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114796 H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|wrong code at -O2 with |[11/12/13/14 Regression] |"-fno-tree-fre -fno-inline |wrong code at -O2 with |-fselective-scheduling2" on |"-fno-tree-fre -fno-inline |x86_64-linux-gnu |-fselective-scheduling2" on | |x86_64-linux-gnu Last reconfirmed| |2024-04-21 CC| |abel at gcc dot gnu.org Status|UNCONFIRMED |NEW Version|unknown |14.0 Ever confirmed|0 |1 --- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> --- This is caused by r9-6789. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug rtl-optimization/114796] [11/12/13/14 Regression] wrong code at -O2 with "-fno-tree-fre -fno-inline -fselective-scheduling2" on x86_64-linux-gnu 2024-04-21 16:32 [Bug tree-optimization/114796] New: wrong code at -O2 with "-fno-tree-fre -fno-inline -fselective-scheduling2" on x86_64-linux-gnu zhendong.su at inf dot ethz.ch 2024-04-21 19:56 ` [Bug tree-optimization/114796] [11/12/13/14 Regression] " hjl.tools at gmail dot com @ 2024-04-21 20:00 ` pinskia at gcc dot gnu.org 2024-04-22 7:14 ` jakub at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2024-04-21 20:00 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114796 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|tree-optimization |rtl-optimization Target Milestone|--- |11.5 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug rtl-optimization/114796] [11/12/13/14 Regression] wrong code at -O2 with "-fno-tree-fre -fno-inline -fselective-scheduling2" on x86_64-linux-gnu 2024-04-21 16:32 [Bug tree-optimization/114796] New: wrong code at -O2 with "-fno-tree-fre -fno-inline -fselective-scheduling2" on x86_64-linux-gnu zhendong.su at inf dot ethz.ch 2024-04-21 19:56 ` [Bug tree-optimization/114796] [11/12/13/14 Regression] " hjl.tools at gmail dot com 2024-04-21 20:00 ` [Bug rtl-optimization/114796] " pinskia at gcc dot gnu.org @ 2024-04-22 7:14 ` jakub at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: jakub at gcc dot gnu.org @ 2024-04-22 7:14 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114796 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org Priority|P3 |P2 ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2024-04-22 7:14 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2024-04-21 16:32 [Bug tree-optimization/114796] New: wrong code at -O2 with "-fno-tree-fre -fno-inline -fselective-scheduling2" on x86_64-linux-gnu zhendong.su at inf dot ethz.ch 2024-04-21 19:56 ` [Bug tree-optimization/114796] [11/12/13/14 Regression] " hjl.tools at gmail dot com 2024-04-21 20:00 ` [Bug rtl-optimization/114796] " pinskia at gcc dot gnu.org 2024-04-22 7:14 ` jakub at gcc dot gnu.org
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