COMPMID-3428: Fixed Mali-G77 heuristic for GEMMReshapedOnlyRHS - f16

Change-Id: Ie1f021235edf3d60171a252d519c53df2d7fb0c6
Signed-off-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/3146
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/core/CL/gemm/reshaped_only_rhs/CLGEMMReshapedOnlyRHSKernelConfigurationValhall.cpp b/src/core/CL/gemm/reshaped_only_rhs/CLGEMMReshapedOnlyRHSKernelConfigurationValhall.cpp
index 783d0fe..5526616 100644
--- a/src/core/CL/gemm/reshaped_only_rhs/CLGEMMReshapedOnlyRHSKernelConfigurationValhall.cpp
+++ b/src/core/CL/gemm/reshaped_only_rhs/CLGEMMReshapedOnlyRHSKernelConfigurationValhall.cpp
@@ -112,7 +112,7 @@
         const int h0 = std::max(std::min(static_cast<int>(n / 4), static_cast<int>(256)), static_cast<int>(1));
         return configure_lhs_rhs_info(m, n, 1, 4, 4, 1, h0, false, true, false, true);
     }
-    else
+    else if (m < 128)
     {
         const int h0 = std::max(std::min(static_cast<int>(n / 4), static_cast<int>(256)), static_cast<int>(1));
         if(k > 512)
@@ -124,6 +124,11 @@
             return configure_lhs_rhs_info(m, n, 2, 4, 8, 1, h0, false, true, false, false);
         }
     }
+    else
+    {
+        const int h0 = std::max(std::min(static_cast<int>(n / 4), static_cast<int>(256)), static_cast<int>(1));
+        return configure_lhs_rhs_info(m, n, 4, 4, 4, 1, h0, false, true, false, false);
+    }
 }
 
 std::pair<GEMMLHSMatrixInfo, GEMMRHSMatrixInfo> CLGEMMReshapedOnlyRHSKernelConfigurationValhall::configure_G77_u8(unsigned int m, unsigned int n, unsigned int k, unsigned int b)