https://gcc.gnu.org/g:da3c2f61893afac37caf97068fa9662b6ac9f16e
commit r15-10721-gda3c2f61893afac37caf97068fa9662b6ac9f16e Author: Lili Cui <[email protected]> Date: Wed Jan 14 09:53:04 2026 +0800 x86: Disable tight loop alignment for m_CORE_ATOM For the E-core front end, aligning tight loops provides little benefit. gcc/ChangeLog: * config/i386/x86-tune.def (X86_TUNE_ALIGN_TIGHT_LOOPS): disable tight loop alignment for m_CORE_ATOM. (cherry picked from commit dfd063aeccb52a51c7d98052920328facec401a9) Diff: --- gcc/config/i386/x86-tune.def | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/gcc/config/i386/x86-tune.def b/gcc/config/i386/x86-tune.def index e72a49a5674e..0eee05de533c 100644 --- a/gcc/config/i386/x86-tune.def +++ b/gcc/config/i386/x86-tune.def @@ -252,7 +252,8 @@ DEF_TUNE (X86_TUNE_FOUR_JUMP_LIMIT, "four_jump_limit", /* X86_TUNE_ALIGN_TIGHT_LOOPS: if false, tight loops are not aligned. */ DEF_TUNE (X86_TUNE_ALIGN_TIGHT_LOOPS, "align_tight_loops", - ~(m_ZHAOXIN | m_CASCADELAKE | m_SKYLAKE_AVX512)) + ~(m_ZHAOXIN | m_CASCADELAKE | m_SKYLAKE_AVX512 + | m_CORE_ATOM)) /*****************************************************************************/ /* Integer instruction selection tuning */
