Feature/silu block quant fusion v1 (#32996)

Signed-off-by: Monishver Chandrasekaran <monishverchandrasekaran@gmail.com>

csrc/torch_bindings.cpp

@@ -2,7 +2,6 @@
 #include "cuda_utils.h"
 #include "ops.h"
 #include "core/registration.h"
-
 #include <torch/library.h>
 #include <torch/version.h>
 
@@ -110,6 +109,18 @@ TORCH_LIBRARY_EXPAND(TORCH_EXTENSION_NAME, ops) {
       "silu_and_mul_quant(Tensor! result, Tensor input, Tensor scale) -> ()");
   ops.impl("silu_and_mul_quant", torch::kCUDA, &silu_and_mul_quant);
 
+  // Fused SiLU+Mul + per-block quantization
+  ops.def(
+      "silu_and_mul_per_block_quant("
+      "Tensor! out, "
+      "Tensor input, "
+      "Tensor! scales, "
+      "int group_size, "
+      "Tensor? scale_ub=None, "
+      "bool is_scale_transposed=False) -> ()");
+  ops.impl("silu_and_mul_per_block_quant", torch::kCUDA,
+           &silu_and_mul_per_block_quant);
+
   ops.def("mul_and_silu(Tensor! out, Tensor input) -> ()");
   ops.impl("mul_and_silu", torch::kCUDA, &mul_and_silu);