495   PetscMPIInt     *w1, *w2, nrqr, *w3, *w4, *onodes1, *olengths1, *onodes2, *olengths2;  in MatIncreaseOverlap_MPIAIJ_Once()  local
532   PetscCall(PetscCalloc4(size, &w1, size, &w2, size, &w3, size, &w4));  in MatIncreaseOverlap_MPIAIJ_Once()
534     PetscCall(PetscArrayzero(w4, size)); /* initialise work vector*/  in MatIncreaseOverlap_MPIAIJ_Once()
541       w4[proc]++;  in MatIncreaseOverlap_MPIAIJ_Once()
544       if (w4[j]) {  in MatIncreaseOverlap_MPIAIJ_Once()
545         w1[j] += w4[j];  in MatIncreaseOverlap_MPIAIJ_Once()
705   PetscCall(PetscFree4(w1, w2, w3, w4));  in MatIncreaseOverlap_MPIAIJ_Once()
2042 …PetscMPIInt      rank, size, tag0, tag2, tag3, tag4, *w1, *w2, *w3, *w4, nrqr, *req_source1 = NULL…  in MatCreateSubMatrices_MPIAIJ_Local()  local
2158 …PetscCall(PetscCalloc4(size, &w1, size, &w2, size, &w3, size, &w4)); /* mesg size, initialize work…  in MatCreateSubMatrices_MPIAIJ_Local()
2172         w4[proc]++;  in MatCreateSubMatrices_MPIAIJ_Local()
2176         if (w4[j]) {  in MatCreateSubMatrices_MPIAIJ_Local()
2177           w1[j] += w4[j];  in MatCreateSubMatrices_MPIAIJ_Local()
2179           w4[j] = 0;  in MatCreateSubMatrices_MPIAIJ_Local()
2318     PetscCall(PetscFree4(w1, w2, w3, w4));  in MatCreateSubMatrices_MPIAIJ_Local()