x64: brgemm convolution: fix postops kernel creation condition

Author: ankalinin

src/cpu/x64/jit_brgemm_conv.cpp

@@ -654,10 +654,13 @@ status_t brgemm_convolution_fwd_t<isa, use_inversion>::init(engine_t *engine) {
     for_(int i_N = N_begin; i_N < N_end; i_N++)
     for (int i_M = M_begin; i_M < M_end; i_M++) {
         // init "init" and "po" kernels for cases then we never call brgemm kernels
-        // e.g. for d/h padded areas
-        const bool filter_in_padding = jcp.f_pad > EXT_KD
-                || jcp.back_pad > EXT_KD || jcp.t_pad > EXT_KH
-                || jcp.b_pad > EXT_KH;
+        // e.g. for d/h padded and dilated filter areas
+        const bool filter_in_padding = jcp.f_pad >= EXT_KD
+                || jcp.back_pad >= EXT_KD || jcp.t_pad >= EXT_KH
+                || jcp.b_pad >= EXT_KH;
+        // note: overly simplistic condition. Ideally, the condition would
+        // only detect cases where there is strictly no overlap between the
+        // input and filter.
         const bool dilate_no_overlap
                 = jcp.dilate_d >= jcp.id || jcp.dilate_h >= jcp.ih;
         if (IMPLICATION(jcp.exec_type == exec_trans,