ivanradanov wrote: For reference, this is a test that exhibits the issue: ``` #include <stdio.h>
#define N 6
#define SLICE1 1:2:2
#define SLICE2 2:3
int main() {
int darr[N][N];
for (int i = 0; i < N; i++)
for (int j = 0; j < N; j++)
darr[i][j] = 100 + 10 * i + j;
#pragma omp target enter data map(alloc: darr[0:N][0:N])
#pragma omp target update to(darr[SLICE1][SLICE2])
for (int i = 0; i < N; i++) {
for (int j = 0; j < N; j++) {
printf("\t%d", darr[i][j]);
}
printf("\n");
}
printf("\n");
for (int i = 0; i < N; i++)
for (int j = 0; j < N; j++)
darr[i][j] = 0;
#pragma omp target update from(darr[SLICE1][SLICE2])
#pragma omp target exit data map(delete: darr[0:N][0:N])
for (int i = 0; i < N; i++) {
for (int j = 0; j < N; j++) {
printf("\t%d", darr[i][j]);
}
printf("\n");
}
printf("\n");
return 0;
}
```
Prior to patch:
```
100 101 102 103 104 105
110 111 112 113 114 115
120 121 122 123 124 125
130 131 132 133 134 135
140 141 142 143 144 145
150 151 152 153 154 155
0 0 0 0 0 0
0 0 0 0 0 0
0 0 122 0 0 0
0 0 0 0 0 0
0 0 142 0 0 0
0 0 0 0 0 0
```
After this patch:
```
100 101 102 103 104 105
110 111 112 113 114 115
120 121 122 123 124 125
130 131 132 133 134 135
140 141 142 143 144 145
150 151 152 153 154 155
0 0 0 0 0 0
0 0 112 113 114 0
0 0 0 0 0 0
0 0 132 133 134 0
0 0 0 0 0 0
0 0 0 0 0 0
```
https://github.com/llvm/llvm-project/pull/156889
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