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[mono][interp] Fix alignment for simd args #117476

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Merged
merged 1 commit into from
Jul 10, 2025
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[mono][interp] Fix alignment for simd args #117476

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6 changes: 6 additions & 0 deletions src/mono/mono/mini/interp/transform.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3394,6 +3394,12 @@ interp_realign_simd_params (TransformData *td, StackInfo *sp_params, int num_arg
td->last_ins->data [0] = GINT_TO_UINT16 (sp_params [i].offset + prev_offset);
td->last_ins->data [1] = offset_amount;
td->last_ins->data [2] = GINT_TO_UINT16 (get_stack_size (td, sp_params + i, num_args - i));

// The stack move applies to all arguments starting at this one. Because we push
// simd valuetypes in aligned fashion on the execution stack, the offset between two
// simd values will be a multiple of simd alignment. This means that if this arg is
// correctly aligned, all following args will be aligned as well.
return;
}
}
}
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