Support Hy4-preview

python/sglang/kernels/ops/layernorm/__init__.py

@@ -514,6 +514,8 @@ def gemma_fused_add_rmsnorm(
     ("gemma4_fused_ops", "gemma4_fused_routing", "triton"),
     ("gemma4_fused_ops", "gemma_qkv_rmsnorm", "triton"),
     ("mhc_head", "fused_hc_head", "triton"),
+    ("hy4_ihc", "fused_hy4_ihc_pre", "triton"),
+    ("hy4_ihc", "fused_hy4_ihc_post", "triton"),
 ]
 for _mod, _fn, _bk in _PHASE25_KERNELS:
     register_kernel(