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* [Bug tree-optimization/115450] New: cpu2017 502.gcc runtime miscompute @ 2024-06-12 1:39 kugan at gcc dot gnu.org 2024-06-12 1:47 ` [Bug tree-optimization/115450] " pinskia at gcc dot gnu.org ` (5 more replies) 0 siblings, 6 replies; 7+ messages in thread From: kugan at gcc dot gnu.org @ 2024-06-12 1:39 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115450 Bug ID: 115450 Summary: cpu2017 502.gcc runtime miscompute Product: gcc Version: 15.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: kugan at gcc dot gnu.org Target Milestone: --- 5022.gcc is meicompiling for aarch64 with -O3 -Wl,-z,muldefs -lm -fallow-argument-mismatch -fpermissive -fstack-arrays -flto -Wl,--sort-section=name -fno-strict-aliasing -fgnu89-inline -march=native -mcpu=neoverse-v2 -msve-vector-bits=128 gcc -v Using built-in specs. COLLECT_GCC=/home/kvivekananda/install_base/bin/gcc COLLECT_LTO_WRAPPER=/home/kvivekananda/install_base/libexec/gcc/aarch64-unknown-linux-gnu/15.0.0/lto-wrapper Target: aarch64-unknown-linux-gnu Configured with: ../gcc_base/configure --enable-multiarch=yes --enable-languages=c,c++,fortran,lto --disable-bootstrap --prefix=/home/kvivekananda/install_base : (reconfigured) ../gcc_base/configure --enable-multiarch=yes --disable-bootstrap --prefix=/home/kvivekananda/install_base --enable-languages=c,c++,fortran,lto --no-create --no-recursion Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 15.0.0 20240607 (experimental) (GCC) Bisect points to: [d93353e6423ecaaae9fa47d0935caafd9abfe4de] Do single-lane SLP discovery for reductions ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/115450] cpu2017 502.gcc runtime miscompute 2024-06-12 1:39 [Bug tree-optimization/115450] New: cpu2017 502.gcc runtime miscompute kugan at gcc dot gnu.org @ 2024-06-12 1:47 ` pinskia at gcc dot gnu.org 2024-06-12 1:47 ` [Bug tree-optimization/115450] [15 Regression] cpu2017 502.gcc runtime miscompute on aarch64 with SVE since r15-1006-gd93353e6423eca pinskia at gcc dot gnu.org ` (4 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: pinskia at gcc dot gnu.org @ 2024-06-12 1:47 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115450 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- >[r15-1006-gd93353e6423eca] Do single-lane SLP discovery for reductions Interesting because PR 115256 bisect it to an earlier patch. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/115450] [15 Regression] cpu2017 502.gcc runtime miscompute on aarch64 with SVE since r15-1006-gd93353e6423eca 2024-06-12 1:39 [Bug tree-optimization/115450] New: cpu2017 502.gcc runtime miscompute kugan at gcc dot gnu.org 2024-06-12 1:47 ` [Bug tree-optimization/115450] " pinskia at gcc dot gnu.org @ 2024-06-12 1:47 ` pinskia at gcc dot gnu.org 2024-06-17 1:12 ` kugan at gcc dot gnu.org ` (3 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: pinskia at gcc dot gnu.org @ 2024-06-12 1:47 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115450 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |pinskia at gcc dot gnu.org Target| |aarch64-linux-gnu Keywords| |wrong-code Summary|cpu2017 502.gcc runtime |[15 Regression] cpu2017 |miscompute |502.gcc runtime miscompute | |on aarch64 with SVE since | |r15-1006-gd93353e6423eca Target Milestone|--- |15.0 Blocks| |26163 Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26163 [Bug 26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95) ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/115450] [15 Regression] cpu2017 502.gcc runtime miscompute on aarch64 with SVE since r15-1006-gd93353e6423eca 2024-06-12 1:39 [Bug tree-optimization/115450] New: cpu2017 502.gcc runtime miscompute kugan at gcc dot gnu.org 2024-06-12 1:47 ` [Bug tree-optimization/115450] " pinskia at gcc dot gnu.org 2024-06-12 1:47 ` [Bug tree-optimization/115450] [15 Regression] cpu2017 502.gcc runtime miscompute on aarch64 with SVE since r15-1006-gd93353e6423eca pinskia at gcc dot gnu.org @ 2024-06-17 1:12 ` kugan at gcc dot gnu.org 2024-06-26 18:08 ` vineetg at gcc dot gnu.org ` (2 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: kugan at gcc dot gnu.org @ 2024-06-17 1:12 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115450 --- Comment #2 from kugan at gcc dot gnu.org --- (In reply to Andrew Pinski from comment #1) > >[r15-1006-gd93353e6423eca] Do single-lane SLP discovery for reductions > > > Interesting because PR 115256 bisect it to an earlier patch. I believe this is a new issue. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/115450] [15 Regression] cpu2017 502.gcc runtime miscompute on aarch64 with SVE since r15-1006-gd93353e6423eca 2024-06-12 1:39 [Bug tree-optimization/115450] New: cpu2017 502.gcc runtime miscompute kugan at gcc dot gnu.org ` (2 preceding siblings ...) 2024-06-17 1:12 ` kugan at gcc dot gnu.org @ 2024-06-26 18:08 ` vineetg at gcc dot gnu.org 2024-06-26 18:11 ` vineetg at gcc dot gnu.org 2024-06-27 5:14 ` liuhongt at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: vineetg at gcc dot gnu.org @ 2024-06-26 18:08 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115450 Vineet Gupta <vineetg at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jeffreyalaw at gmail dot com, | |vineetg at gcc dot gnu.org --- Comment #3 from Vineet Gupta <vineetg at gcc dot gnu.org> --- Bisected RISC-V SPEC 502.gcc runtime failure to same commit as well. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/115450] [15 Regression] cpu2017 502.gcc runtime miscompute on aarch64 with SVE since r15-1006-gd93353e6423eca 2024-06-12 1:39 [Bug tree-optimization/115450] New: cpu2017 502.gcc runtime miscompute kugan at gcc dot gnu.org ` (3 preceding siblings ...) 2024-06-26 18:08 ` vineetg at gcc dot gnu.org @ 2024-06-26 18:11 ` vineetg at gcc dot gnu.org 2024-06-27 5:14 ` liuhongt at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: vineetg at gcc dot gnu.org @ 2024-06-26 18:11 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115450 --- Comment #4 from Vineet Gupta <vineetg at gcc dot gnu.org> --- -Ofast -flto=auto -march=rv64gcv_zvl256b_zba_zbb_zbs_zicond_zfa -ftree-vectorize -mrvv-vector-bits=zvl For RISC-V issue only happens in a LTO build ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/115450] [15 Regression] cpu2017 502.gcc runtime miscompute on aarch64 with SVE since r15-1006-gd93353e6423eca 2024-06-12 1:39 [Bug tree-optimization/115450] New: cpu2017 502.gcc runtime miscompute kugan at gcc dot gnu.org ` (4 preceding siblings ...) 2024-06-26 18:11 ` vineetg at gcc dot gnu.org @ 2024-06-27 5:14 ` liuhongt at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: liuhongt at gcc dot gnu.org @ 2024-06-27 5:14 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115450 Hongtao Liu <liuhongt at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |liuhongt at gcc dot gnu.org --- Comment #5 from Hongtao Liu <liuhongt at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #1) > >[r15-1006-gd93353e6423eca] Do single-lane SLP discovery for reductions > > > Interesting because PR 115256 bisect it to an earlier patch. For PR 115256, the issue is fixed after adding -fno-strict-aliasing. ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2024-06-27 5:14 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2024-06-12 1:39 [Bug tree-optimization/115450] New: cpu2017 502.gcc runtime miscompute kugan at gcc dot gnu.org 2024-06-12 1:47 ` [Bug tree-optimization/115450] " pinskia at gcc dot gnu.org 2024-06-12 1:47 ` [Bug tree-optimization/115450] [15 Regression] cpu2017 502.gcc runtime miscompute on aarch64 with SVE since r15-1006-gd93353e6423eca pinskia at gcc dot gnu.org 2024-06-17 1:12 ` kugan at gcc dot gnu.org 2024-06-26 18:08 ` vineetg at gcc dot gnu.org 2024-06-26 18:11 ` vineetg at gcc dot gnu.org 2024-06-27 5:14 ` liuhongt at gcc dot gnu.org
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