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* [Bug target/113090] New: Suboptimal vector permuation for 64-bit vector. @ 2023-12-20 3:42 liuhongt at gcc dot gnu.org 2023-12-20 8:16 ` [Bug target/113090] " rguenth at gcc dot gnu.org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: liuhongt at gcc dot gnu.org @ 2023-12-20 3:42 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113090 Bug ID: 113090 Summary: Suboptimal vector permuation for 64-bit vector. Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: liuhongt at gcc dot gnu.org Target Milestone: --- When working on PR113079, loop vectorizer try to reduc sum of v2si with permuation, x86 backend generates typedef int v2si __attribute__((vector_size(8))); v2si foo (v2si a, v2si b) { return __builtin_shufflevector (a, b, 1, 2); } foo(int __vector(2), int __vector(2)): vpshufb xmm0, xmm0, XMMWORD PTR .LC0[rip] vpshufb xmm1, xmm1, XMMWORD PTR .LC1[rip] vpor xmm0, xmm0, xmm1 But it can be better with .cfi_startproc punpcklqdq %xmm1, %xmm0 pshufd $153, %xmm0, %xmm0 ret ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/113090] Suboptimal vector permuation for 64-bit vector. 2023-12-20 3:42 [Bug target/113090] New: Suboptimal vector permuation for 64-bit vector liuhongt at gcc dot gnu.org @ 2023-12-20 8:16 ` rguenth at gcc dot gnu.org 2024-05-07 7:44 ` cvs-commit at gcc dot gnu.org 2024-05-07 7:45 ` liuhongt at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: rguenth at gcc dot gnu.org @ 2023-12-20 8:16 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113090 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Last reconfirmed| |2023-12-20 Status|UNCONFIRMED |NEW ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/113090] Suboptimal vector permuation for 64-bit vector. 2023-12-20 3:42 [Bug target/113090] New: Suboptimal vector permuation for 64-bit vector liuhongt at gcc dot gnu.org 2023-12-20 8:16 ` [Bug target/113090] " rguenth at gcc dot gnu.org @ 2024-05-07 7:44 ` cvs-commit at gcc dot gnu.org 2024-05-07 7:45 ` liuhongt at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2024-05-07 7:44 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113090 --- Comment #1 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by hongtao Liu <liuhongt@gcc.gnu.org>: https://gcc.gnu.org/g:a9f642783853b60bb0a59562b8ab3ed10ec01641 commit r15-234-ga9f642783853b60bb0a59562b8ab3ed10ec01641 Author: liuhongt <hongtao.liu@intel.com> Date: Wed Dec 20 11:54:43 2023 +0800 Optimize 64-bit vector permutation with punpcklqdq + 128-bit vector pshuf. gcc/ChangeLog: PR target/113090 * config/i386/i386-expand.cc (expand_vec_perm_punpckldq_pshuf): New function. (ix86_expand_vec_perm_const_1): Try expand_vec_perm_punpckldq_pshuf for sequence of 2 instructions. gcc/testsuite/ChangeLog: * gcc.target/i386/pr113090.c: New test. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug target/113090] Suboptimal vector permuation for 64-bit vector. 2023-12-20 3:42 [Bug target/113090] New: Suboptimal vector permuation for 64-bit vector liuhongt at gcc dot gnu.org 2023-12-20 8:16 ` [Bug target/113090] " rguenth at gcc dot gnu.org 2024-05-07 7:44 ` cvs-commit at gcc dot gnu.org @ 2024-05-07 7:45 ` liuhongt at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: liuhongt at gcc dot gnu.org @ 2024-05-07 7:45 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113090 Hongtao Liu <liuhongt at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|NEW |RESOLVED --- Comment #2 from Hongtao Liu <liuhongt at gcc dot gnu.org> --- Fixed in GCC15 ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2024-05-07 7:45 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2023-12-20 3:42 [Bug target/113090] New: Suboptimal vector permuation for 64-bit vector liuhongt at gcc dot gnu.org 2023-12-20 8:16 ` [Bug target/113090] " rguenth at gcc dot gnu.org 2024-05-07 7:44 ` cvs-commit at gcc dot gnu.org 2024-05-07 7:45 ` liuhongt at gcc dot gnu.org
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