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* [Bug tree-optimization/109327] New: ICE on valid code at -O1 and above with "-fno-tree-ccp": Segmentation fault @ 2023-03-29 5:22 zhendong.su at inf dot ethz.ch 2023-03-29 7:10 ` [Bug tree-optimization/109327] " rguenth at gcc dot gnu.org ` (4 more replies) 0 siblings, 5 replies; 6+ messages in thread From: zhendong.su at inf dot ethz.ch @ 2023-03-29 5:22 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109327 Bug ID: 109327 Summary: ICE on valid code at -O1 and above with "-fno-tree-ccp": Segmentation fault 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: --- It appears to be a very recent regression. [554] % 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/13.0.1/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 --with-system-zlib Thread model: posix Supported LTO compression algorithms: zlib gcc version 13.0.1 20230329 (experimental) [master r13-6922-g91293ffb6af] (GCC) [555] % [555] % gcctk -O1 -fno-tree-ccp small.c during GIMPLE pass: forwprop small.c: In function ‘main’: small.c:11:1: internal compiler error: Segmentation fault 11 | } | ^ 0xeeb24f crash_signal ../../gcc-trunk/gcc/toplev.cc:314 0xbab1a7 phi_nodes_ptr(basic_block_def*) ../../gcc-trunk/gcc/gimple.h:4684 0xbab1a7 gsi_start_phis(basic_block_def*) ../../gcc-trunk/gcc/gimple-iterator.cc:935 0xbab1a7 gsi_for_stmt(gimple*) ../../gcc-trunk/gcc/gimple-iterator.cc:620 0x10314f3 execute ../../gcc-trunk/gcc/tree-ssa-forwprop.cc:4070 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. [556] % [556] % cat small.c int a; void b(int c) {} int main() { int d = 0, *e = &a; if (d) { int *f = e; while (a) b(e != f); } return 0; } ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/109327] ICE on valid code at -O1 and above with "-fno-tree-ccp": Segmentation fault 2023-03-29 5:22 [Bug tree-optimization/109327] New: ICE on valid code at -O1 and above with "-fno-tree-ccp": Segmentation fault zhendong.su at inf dot ethz.ch @ 2023-03-29 7:10 ` rguenth at gcc dot gnu.org 2023-03-29 7:51 ` rguenth at gcc dot gnu.org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu.org @ 2023-03-29 7:10 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109327 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Version|unknown |13.0 Last reconfirmed| |2023-03-29 Ever confirmed|0 |1 Status|UNCONFIRMED |ASSIGNED Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Mine. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/109327] ICE on valid code at -O1 and above with "-fno-tree-ccp": Segmentation fault 2023-03-29 5:22 [Bug tree-optimization/109327] New: ICE on valid code at -O1 and above with "-fno-tree-ccp": Segmentation fault zhendong.su at inf dot ethz.ch 2023-03-29 7:10 ` [Bug tree-optimization/109327] " rguenth at gcc dot gnu.org @ 2023-03-29 7:51 ` rguenth at gcc dot gnu.org 2023-03-29 8:35 ` cvs-commit at gcc dot gnu.org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu.org @ 2023-03-29 7:51 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109327 --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- It's really an old issue I think. We record a lattice in forwprop, marking stmts to be removed. But the early forwprop phase runs on the IL with the stmt operands not substituted, instead relying on old get_prop_source_stmt and remove_prop_source_from_use. That mechanism can interfere with the lattice recorded stmt removal. Testing a patch. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/109327] ICE on valid code at -O1 and above with "-fno-tree-ccp": Segmentation fault 2023-03-29 5:22 [Bug tree-optimization/109327] New: ICE on valid code at -O1 and above with "-fno-tree-ccp": Segmentation fault zhendong.su at inf dot ethz.ch 2023-03-29 7:10 ` [Bug tree-optimization/109327] " rguenth at gcc dot gnu.org 2023-03-29 7:51 ` rguenth at gcc dot gnu.org @ 2023-03-29 8:35 ` cvs-commit at gcc dot gnu.org 2023-03-29 8:37 ` rguenth at gcc dot gnu.org 2023-03-30 16:46 ` [Bug tree-optimization/109327] [13 Regression] " pinskia at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2023-03-29 8:35 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109327 --- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>: https://gcc.gnu.org/g:7fd1d28d2436065da7fc0fe01d787fcdf3c14b83 commit r13-6926-g7fd1d28d2436065da7fc0fe01d787fcdf3c14b83 Author: Richard Biener <rguenther@suse.de> Date: Wed Mar 29 09:51:58 2023 +0200 tree-optimization/109327 - forwprop stmt removal issue There's interfering between the to_removed queue and other mechanisms removing stmts, in this case remove_prop_source_from_use. The following makes the to_remove queue draining more permissive. PR tree-optimization/109327 * tree-ssa-forwprop.cc (pass_forwprop::execute): Deal with already removed stmts when draining to_remove. * gcc.dg/pr109327.c: New testcase. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/109327] ICE on valid code at -O1 and above with "-fno-tree-ccp": Segmentation fault 2023-03-29 5:22 [Bug tree-optimization/109327] New: ICE on valid code at -O1 and above with "-fno-tree-ccp": Segmentation fault zhendong.su at inf dot ethz.ch ` (2 preceding siblings ...) 2023-03-29 8:35 ` cvs-commit at gcc dot gnu.org @ 2023-03-29 8:37 ` rguenth at gcc dot gnu.org 2023-03-30 16:46 ` [Bug tree-optimization/109327] [13 Regression] " pinskia at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu.org @ 2023-03-29 8:37 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109327 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Keywords| |ice-on-valid-code Resolution|--- |FIXED --- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> --- Fixed (it's probably latent on the branches). ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/109327] [13 Regression] ICE on valid code at -O1 and above with "-fno-tree-ccp": Segmentation fault 2023-03-29 5:22 [Bug tree-optimization/109327] New: ICE on valid code at -O1 and above with "-fno-tree-ccp": Segmentation fault zhendong.su at inf dot ethz.ch ` (3 preceding siblings ...) 2023-03-29 8:37 ` rguenth at gcc dot gnu.org @ 2023-03-30 16:46 ` pinskia at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-03-30 16:46 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109327 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|ICE on valid code at -O1 |[13 Regression] ICE on |and above with |valid code at -O1 and above |"-fno-tree-ccp": |with "-fno-tree-ccp": |Segmentation fault |Segmentation fault Target Milestone|--- |13.0 ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2023-03-30 16:46 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2023-03-29 5:22 [Bug tree-optimization/109327] New: ICE on valid code at -O1 and above with "-fno-tree-ccp": Segmentation fault zhendong.su at inf dot ethz.ch 2023-03-29 7:10 ` [Bug tree-optimization/109327] " rguenth at gcc dot gnu.org 2023-03-29 7:51 ` rguenth at gcc dot gnu.org 2023-03-29 8:35 ` cvs-commit at gcc dot gnu.org 2023-03-29 8:37 ` rguenth at gcc dot gnu.org 2023-03-30 16:46 ` [Bug tree-optimization/109327] [13 Regression] " pinskia at gcc dot gnu.org
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