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* [Bug tree-optimization/114166] New: word_mode vectorization still relies on vector lowering @ 2024-02-29 11:43 rguenth at gcc dot gnu.org 2024-02-29 11:44 ` [Bug tree-optimization/114166] " rguenth at gcc dot gnu.org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: rguenth at gcc dot gnu.org @ 2024-02-29 11:43 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114166 Bug ID: 114166 Summary: word_mode vectorization still relies on vector lowering Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: rguenth at gcc dot gnu.org Target Milestone: --- When the vectorizer decides to use emulated vectors for operations the target doesn't support and the vector types do not have integer mode but the vectorizer simply emits vector code nevertheless which it does for bitwise operations, we fail RTL expansion. This can be seen with g++.dg/opt/pr82929.C when moving vector lowering before vectorization. We then vectorize V1SImode bitwise and even though the optab check discovered that's not supported. Vectorizer code generation should, like it now does for PLUS/MINUS and NEGATE, use integer types when code generating emulated vectors. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/114166] word_mode vectorization still relies on vector lowering 2024-02-29 11:43 [Bug tree-optimization/114166] New: word_mode vectorization still relies on vector lowering rguenth at gcc dot gnu.org @ 2024-02-29 11:44 ` rguenth at gcc dot gnu.org 2024-02-29 11:48 ` rguenth at gcc dot gnu.org 2024-02-29 22:46 ` pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: rguenth at gcc dot gnu.org @ 2024-02-29 11:44 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114166 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- g++.dg/opt/pr82929.C with -m32, that is. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/114166] word_mode vectorization still relies on vector lowering 2024-02-29 11:43 [Bug tree-optimization/114166] New: word_mode vectorization still relies on vector lowering rguenth at gcc dot gnu.org 2024-02-29 11:44 ` [Bug tree-optimization/114166] " rguenth at gcc dot gnu.org @ 2024-02-29 11:48 ` rguenth at gcc dot gnu.org 2024-02-29 22:46 ` pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: rguenth at gcc dot gnu.org @ 2024-02-29 11:48 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114166 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |ice-on-valid-code, | |missed-optimization --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- g++.dg/opt/vectcond-1.C also with -m32 is another testcase, this time for BIT_XOR_EXPR. SLP vectorization is also a bit too happy converting scalar code to vector<1> code, we should filter those out. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/114166] word_mode vectorization still relies on vector lowering 2024-02-29 11:43 [Bug tree-optimization/114166] New: word_mode vectorization still relies on vector lowering rguenth at gcc dot gnu.org 2024-02-29 11:44 ` [Bug tree-optimization/114166] " rguenth at gcc dot gnu.org 2024-02-29 11:48 ` rguenth at gcc dot gnu.org @ 2024-02-29 22:46 ` pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2024-02-29 22:46 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114166 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Last reconfirmed| |2024-02-29 Status|UNCONFIRMED |NEW Ever confirmed|0 |1 --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Confirmed. I accidently came across this today via PR 114178 . ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2024-02-29 22:46 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2024-02-29 11:43 [Bug tree-optimization/114166] New: word_mode vectorization still relies on vector lowering rguenth at gcc dot gnu.org 2024-02-29 11:44 ` [Bug tree-optimization/114166] " rguenth at gcc dot gnu.org 2024-02-29 11:48 ` rguenth at gcc dot gnu.org 2024-02-29 22:46 ` pinskia at gcc dot gnu.org
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