// Tile parititioning void Ok () { #pragma acc parallel num_gangs (10) num_workers(32) vector_length(32) { #pragma acc loop tile(*) gang vector for (int ix = 0; ix < 10; ix++) { } #pragma acc loop tile(*) for (int ix = 0; ix < 10; ix++) { } #pragma acc loop tile(*) gang for (int ix = 0; ix < 10; ix++) { #pragma acc loop vector for (int jx = 0; jx < 10; jx++) ; } #pragma acc loop tile(*) for (int ix = 0; ix < 10; ix++) { #pragma acc loop vector for (int jx = 0; jx < 10; jx++) ; } #pragma acc loop gang for (int jx = 0; jx < 10; jx++) { #pragma acc loop tile(*) vector for (int ix = 0; ix < 10; ix++) { } #pragma acc loop tile(*) for (int ix = 0; ix < 10; ix++) { } } #pragma acc loop tile(*) worker for (int ix = 0; ix < 10; ix++) { #pragma acc loop vector for (int jx = 0; jx < 10; jx++) ; } } } void Bad () { #pragma acc parallel num_gangs (10) num_workers(32) vector_length(32) { #pragma acc loop tile(*) gang vector /* { dg-message "containing loop" } */ for (int ix = 0; ix < 10; ix++) { #pragma acc loop vector /* { dg-error "uses same" } */ for (int jx = 0; jx < 10; jx++) ; } #pragma acc loop tile(*) gang vector for (int ix = 0; ix < 10; ix++) { #pragma acc loop auto /* { dg-warning "insufficient partitioning" } */ for (int jx = 0; jx < 10; jx++) ; } #pragma acc loop tile(*) auto /* { dg-warning "insufficient partitioning" } */ for (int ix = 0; ix < 10; ix++) { #pragma acc loop worker for (int jx = 0; jx < 10; jx++) ; } #pragma acc loop worker /* { dg-message "containing loop" } */ for (int jx = 0; jx < 10; jx++) { #pragma acc loop tile(*) gang vector /* { dg-error "incorrectly nested" } */ for (int ix = 0; ix < 10; ix++) { } #pragma acc loop tile(*) vector /* { dg-warning "insufficient partitioning" } */ for (int ix = 0; ix < 10; ix++) { } #pragma acc loop tile(*) /* { dg-warning "insufficient partitioning" } */ for (int ix = 0; ix < 10; ix++) { } } } }