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* [Bug target/112577] New: aarch64_class_max_nregs mishandles 64-bit structure modes
@ 2023-11-16 23:03 rsandifo at gcc dot gnu.org
2024-01-16 10:12 ` [Bug target/112577] " belagod at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: rsandifo at gcc dot gnu.org @ 2023-11-16 23:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112577
Bug ID: 112577
Summary: aarch64_class_max_nregs mishandles 64-bit structure
modes
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rsandifo at gcc dot gnu.org
Target Milestone: ---
As noted in https://gcc.gnu.org/pipermail/gcc-patches/2023-November/636874.html
, aarch64_class_max_nregs returns the wrong value for 64-bit structure modes
like V3x1DI. Should be simple to fix.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug target/112577] aarch64_class_max_nregs mishandles 64-bit structure modes 2023-11-16 23:03 [Bug target/112577] New: aarch64_class_max_nregs mishandles 64-bit structure modes rsandifo at gcc dot gnu.org @ 2024-01-16 10:12 ` belagod at gcc dot gnu.org 2024-01-16 10:13 ` belagod at gcc dot gnu.org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: belagod at gcc dot gnu.org @ 2024-01-16 10:12 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112577 Tejas Belagod <belagod at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Status|UNCONFIRMED |NEW Assignee|unassigned at gcc dot gnu.org |belagod at gcc dot gnu.org Last reconfirmed| |2024-01-16 CC| |belagod at gcc dot gnu.org ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/112577] aarch64_class_max_nregs mishandles 64-bit structure modes 2023-11-16 23:03 [Bug target/112577] New: aarch64_class_max_nregs mishandles 64-bit structure modes rsandifo at gcc dot gnu.org 2024-01-16 10:12 ` [Bug target/112577] " belagod at gcc dot gnu.org @ 2024-01-16 10:13 ` belagod at gcc dot gnu.org 2024-01-16 11:08 ` belagod at gcc dot gnu.org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: belagod at gcc dot gnu.org @ 2024-01-16 10:13 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112577 --- Comment #1 from Tejas Belagod <belagod at gcc dot gnu.org> --- Confirmed. Testing a fix. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/112577] aarch64_class_max_nregs mishandles 64-bit structure modes 2023-11-16 23:03 [Bug target/112577] New: aarch64_class_max_nregs mishandles 64-bit structure modes rsandifo at gcc dot gnu.org 2024-01-16 10:12 ` [Bug target/112577] " belagod at gcc dot gnu.org 2024-01-16 10:13 ` belagod at gcc dot gnu.org @ 2024-01-16 11:08 ` belagod at gcc dot gnu.org 2024-02-06 10:40 ` cvs-commit at gcc dot gnu.org 2024-02-06 10:42 ` belagod at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: belagod at gcc dot gnu.org @ 2024-01-16 11:08 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112577 Tejas Belagod <belagod at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/112577] aarch64_class_max_nregs mishandles 64-bit structure modes 2023-11-16 23:03 [Bug target/112577] New: aarch64_class_max_nregs mishandles 64-bit structure modes rsandifo at gcc dot gnu.org ` (2 preceding siblings ...) 2024-01-16 11:08 ` belagod at gcc dot gnu.org @ 2024-02-06 10:40 ` cvs-commit at gcc dot gnu.org 2024-02-06 10:42 ` belagod at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2024-02-06 10:40 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112577 --- Comment #2 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Tejas Belagod <belagod@gcc.gnu.org>: https://gcc.gnu.org/g:ca04e7a2e1b08ed02e22e2656ba6032099195856 commit r14-8821-gca04e7a2e1b08ed02e22e2656ba6032099195856 Author: Tejas Belagod <tejas.belagod@arm.com> Date: Thu Jan 11 12:37:06 2024 +0530 AArch64: aarch64_class_max_nregs mishandles 64-bit structure modes [PR112577] The target hook aarch64_class_max_nregs returns the incorrect result for 64-bit structure modes like V31DImode or V41DFmode etc. The calculation of the nregs is based on the size of AdvSIMD vector register for 64-bit modes which ought to be UNITS_PER_VREG / 2. This patch fixes the register size. gcc/ChangeLog: PR target/112577 * config/aarch64/aarch64.cc (aarch64_class_max_nregs): Handle 64-bit vector structure modes correctly. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/112577] aarch64_class_max_nregs mishandles 64-bit structure modes 2023-11-16 23:03 [Bug target/112577] New: aarch64_class_max_nregs mishandles 64-bit structure modes rsandifo at gcc dot gnu.org ` (3 preceding siblings ...) 2024-02-06 10:40 ` cvs-commit at gcc dot gnu.org @ 2024-02-06 10:42 ` belagod at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: belagod at gcc dot gnu.org @ 2024-02-06 10:42 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112577 Tejas Belagod <belagod at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|ASSIGNED |RESOLVED --- Comment #3 from Tejas Belagod <belagod at gcc dot gnu.org> --- Fixed on trunk. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2024-02-06 10:42 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2023-11-16 23:03 [Bug target/112577] New: aarch64_class_max_nregs mishandles 64-bit structure modes rsandifo at gcc dot gnu.org 2024-01-16 10:12 ` [Bug target/112577] " belagod at gcc dot gnu.org 2024-01-16 10:13 ` belagod at gcc dot gnu.org 2024-01-16 11:08 ` belagod at gcc dot gnu.org 2024-02-06 10:40 ` cvs-commit at gcc dot gnu.org 2024-02-06 10:42 ` belagod at gcc dot gnu.org
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