GEMM/IGEMM microkernels with alternative activations in WAsm SIMD

PiperOrigin-RevId: 316715937
diff --git a/test/f32-igemm.yaml b/test/f32-igemm.yaml
index 775a4f9..75f41ba 100644
--- a/test/f32-igemm.yaml
+++ b/test/f32-igemm.yaml
@@ -2,6 +2,12 @@
 #
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
+- name: xnn_f32_igemm_ukernel_1x8__wasmsimd_splat
+  k-block: 4
+- name: xnn_f32_igemm_ukernel_4x8__wasmsimd_splat
+  k-block: 4
+- name: xnn_f32_igemm_ukernel_5x8__wasmsimd_splat
+  k-block: 4
 - name: xnn_f32_igemm_ukernel_1x4__wasm
   k-block: 1
 - name: xnn_f32_igemm_ukernel_2x4__wasm