[Bug target/126980] -march=znver[456] doesn't honor -Os
"hjl.tools at gmail dot com via Gcc-bugs" <[email protected]>
| Newsgroups | gmane.comp.gcc.bugs |
|---|---|
| Message-ID | <[email protected]/bugzilla/> |
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126980
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed| |2026-08-21
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
It is caused by
/* X86_TUNE_AVX512_MOVE_BY_PIECES: Optimize move_by_pieces with 512-bit
AVX instructions. */
DEF_TUNE (X86_TUNE_AVX512_MOVE_BY_PIECES, "avx512_move_by_pieces",
m_ZNVER4 | m_ZNVER5 | m_ZNVER6 | m_C86_4G_M7 | m_C86_4G_M8)