Revert "Revert "Add map info for dereference pointer.""

This reverts commit 8cf85a0cadb033fed3d96aa5283deb4bfbbaf2c8.

This is add back change of "Add map info for dereference pointer."

In addition turn off test run on amdgpu, since I don't know the way to
reprodue the problem.

1 files changed, 107 insertions, 0 deletions

diff --git a/openmp/libomptarget/test/mapping/target_derefence_array_pointrs.cpp b/openmp/libomptarget/test/mapping/target_derefence_array_pointrs.cpp
new file mode 100644
index 000000000000..7d4bc9ea2247
--- /dev/null
+++ b/openmp/libomptarget/test/mapping/target_derefence_array_pointrs.cpp
@@ -0,0 +1,107 @@
+// RUN: %libomptarget-compilexx-generic -fopenmp-version=51
+// RUN: %libomptarget-run-generic 2>&1 \
+// RUN: | %fcheck-generic
+
+// UNSUPPORTED: amdgcn-amd-amdhsa
+
+#include <stdio.h>
+#include <stdlib.h>
+
+void foo(int **t1d) {
+  int ***t2d = &t1d;
+  int ****t3d = &t2d;
+  *t1d = (int *)malloc(3 * sizeof(int));
+  int j, a = 0, b = 0;
+
+  for (j = 0; j < 3; j++)
+    (*t1d)[j] = 0;
+#pragma omp target map(tofrom : (*t1d)[0 : 3])
+  { (*t1d)[1] = 1; }
+  // CHECK: 1
+  printf("%d\n", (*t1d)[1]);
+#pragma omp target map(tofrom : (**t2d)[0 : 3])
+  { (**t2d)[1] = 2; }
+  // CHECK: 2
+  printf("%d\n", (**t2d)[1]);
+#pragma omp target map(tofrom : (***t3d)[0 : 3])
+  { (***t3d)[1] = 3; }
+  // CHECK: 3
+  printf("%d\n", (***t3d)[1]);
+#pragma omp target map(tofrom : (**t1d))
+  { (*t1d)[0] = 4; }
+  // CHECK: 4
+  printf("%d\n", (*t1d)[0]);
+#pragma omp target map(tofrom : (*(*(t1d + a) + b)))
+  { *(*(t1d + a) + b) = 5; }
+  // CHECK: 5
+  printf("%d\n", *(*(t1d + a) + b));
+}
+
+typedef int(T)[3];
+void bar() {
+  T **a;
+  int b[2][3];
+  int(*p)[3] = b;
+  a = &p;
+  for (int i = 0; i < 3; i++) {
+    (**a)[1] = i;
+  }
+#pragma omp target map((**a)[ : 3])
+  {
+    (**a)[1] = 6;
+    // CHECK: 6
+    printf("%d\n", (**a)[1]);
+  }
+}
+
+struct SSA {
+  int i;
+  SSA *sa;
+  SSA() {
+    i = 1;
+    sa = this;
+  }
+};
+
+void zoo(int **f, SSA *sa) {
+  int *t = *f;
+  f = (int **)malloc(sa->i * 4 * sizeof(int));
+  t = (int *)malloc(sa->i * sizeof(int));
+  *(f + sa->i + 1) = t;
+  *(sa->sa->i + *(f + sa->i + 1)) = 4;
+  printf("%d\n", *(sa->sa->i + *(1 + sa->i + f)));
+#pragma omp target map(sa, *(sa->sa->i + *(1 + sa->i + f)))
+  { *(sa->sa->i + *(1 + sa->i + f)) = 7; }
+  // CHECK: 7
+  printf("%d\n", *(sa->sa->i + *(1 + sa->i + f)));
+}
+
+void xoo() {
+  int *x = 0;
+  SSA *sa = new SSA();
+  zoo(&x, sa);
+}
+
+void yoo(int **x) {
+  *x = (int *)malloc(2 * sizeof(int));
+#pragma omp target map(**x)
+  {
+    **x = 8;
+    // CHECK: 8
+    printf("%d\n", **x);
+  }
+#pragma omp target map(*(*x + 1))
+  {
+    *(*x + 1) = 9;
+    // CHECK: 9
+    printf("%d\n", *(*x + 1));
+  }
+}
+
+int main() {
+  int *data = 0;
+  foo(&data);
+  bar();
+  xoo();
+  yoo(&data);
+}