[OpenMP] Initial implementation of parse+sema for clause use_device_ptr of 'target data'

http://reviews.llvm.org/D21904

This patch is similar to the implementation of 'private' clause: it adds a list of private pointers to be used within the target data region to store the device pointers returned by the runtime.
Please refer to the following document for a full description of what the runtime witll return in this case (page 10 and 11):
https://github.com/clang-omp/OffloadingDesign

I am happy to answer any question related to the runtime interface to help reviewing this patch.

llvm-svn: 275271

1 files changed, 206 insertions, 0 deletions

diff --git a/clang/test/OpenMP/target_data_use_device_ptr_messages.cpp b/clang/test/OpenMP/target_data_use_device_ptr_messages.cpp
new file mode 100644
index 00000000000..1d8002c1ff6
--- /dev/null
+++ b/clang/test/OpenMP/target_data_use_device_ptr_messages.cpp
@@ -0,0 +1,206 @@
+// RUN: %clang_cc1 -std=c++11 -verify -fopenmp -ferror-limit 200 %s
+struct ST {
+  int *a;
+};
+struct SA {
+  const int d = 5;
+  const int da[5] = { 0 };
+  ST e;
+  ST g[10];
+  int i;
+  int &j = i;
+  int *k = &j;
+  int *&z = k;
+  int aa[10];
+  void func(int arg) {
+#pragma omp target data map(i) use_device_ptr // expected-error {{expected '(' after 'use_device_ptr'}}
+    {}
+#pragma omp target data map(i) use_device_ptr( // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{expected expression}}
+    {}
+#pragma omp target data map(i) use_device_ptr() // expected-error {{expected expression}}
+    {}
+#pragma omp target data map(i) use_device_ptr(alloc) // expected-error {{use of undeclared identifier 'alloc'}}
+    {}
+#pragma omp target data map(i) use_device_ptr(arg // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+    {}
+#pragma omp target data map(i) use_device_ptr(i) // expected-error {{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+    {}
+#pragma omp target data map(i) use_device_ptr(j) // expected-error {{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+    {}
+#pragma omp target data map(i) use_device_ptr(k) // OK
+    {}
+#pragma omp target data map(i) use_device_ptr(z) // OK
+    {}
+#pragma omp target data map(i) use_device_ptr(aa) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+    {}
+#pragma omp target data map(i) use_device_ptr(e) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+    {}
+#pragma omp target data map(i) use_device_ptr(g) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+    {}
+#pragma omp target data map(i) use_device_ptr(k,i,j) // expected-error2 {{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+    {}
+#pragma omp target data map(i) use_device_ptr(d) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+    {}
+#pragma omp target data map(i) use_device_ptr(da) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+    {}
+  return;
+ }
+};
+struct SB {
+  unsigned A;
+  unsigned B;
+  float Arr[100];
+  float *Ptr;
+  float *foo() {
+    return &Arr[0];
+  }
+};
+
+struct SC {
+  unsigned A : 2;
+  unsigned B : 3;
+  unsigned C;
+  unsigned D;
+  float Arr[100];
+  SB S;
+  SB ArrS[100];
+  SB *PtrS;
+  SB *&RPtrS;
+  float *Ptr;
+
+  SC(SB *&_RPtrS) : RPtrS(_RPtrS) {}
+};
+
+union SD {
+  unsigned A;
+  float B;
+};
+
+struct S1;
+extern S1 a;
+class S2 {
+  mutable int a;
+public:
+  S2():a(0) { }
+  S2(S2 &s2):a(s2.a) { }
+  static float S2s;
+  static const float S2sc;
+};
+const float S2::S2sc = 0;
+const S2 b;
+const S2 ba[5];
+class S3 {
+  int a;
+public:
+  S3():a(0) { }
+  S3(S3 &s3):a(s3.a) { }
+};
+const S3 c;
+const S3 ca[5];
+extern const int f;
+class S4 {
+  int a;
+  S4();
+  S4(const S4 &s4);
+public:
+  S4(int v):a(v) { }
+};
+class S5 {
+  int a;
+  S5():a(0) {}
+  S5(const S5 &s5):a(s5.a) { }
+public:
+  S5(int v):a(v) { }
+};
+
+S3 h;
+#pragma omp threadprivate(h)
+
+typedef int from;
+
+template <typename T, int I>
+T tmain(T argc) {
+  const T d = 5;
+  const T da[5] = { 0 };
+  S4 e(4);
+  S5 g(5);
+  T i;
+  T &j = i;
+  T *k = &j;
+  T *&z = k;
+  T aa[10];
+#pragma omp target data map(i) use_device_ptr // expected-error {{expected '(' after 'use_device_ptr'}}
+  {}
+#pragma omp target data map(i) use_device_ptr( // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{expected expression}}
+  {}
+#pragma omp target data map(i) use_device_ptr() // expected-error {{expected expression}}
+  {}
+#pragma omp target data map(i) use_device_ptr(alloc) // expected-error {{use of undeclared identifier 'alloc'}}
+  {}
+#pragma omp target data map(i) use_device_ptr(argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(i) // expected-error {{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(j) // expected-error {{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(k) // OK
+  {}
+#pragma omp target data map(i) use_device_ptr(z) // OK
+  {}
+#pragma omp target data map(i) use_device_ptr(aa) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(e) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(g) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(k,i,j) // expected-error2 {{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(d) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(da) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+  return 0;
+}
+
+int main(int argc, char **argv) {
+  const int d = 5;
+  const int da[5] = { 0 };
+  S4 e(4);
+  S5 g(5);
+  int i;
+  int &j = i;
+  int *k = &j;
+  int *&z = k;
+  int aa[10];
+#pragma omp target data map(i) use_device_ptr // expected-error {{expected '(' after 'use_device_ptr'}}
+  {}
+#pragma omp target data map(i) use_device_ptr( // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{expected expression}}
+  {}
+#pragma omp target data map(i) use_device_ptr() // expected-error {{expected expression}}
+  {}
+#pragma omp target data map(i) use_device_ptr(alloc) // expected-error {{use of undeclared identifier 'alloc'}}
+  {}
+#pragma omp target data map(i) use_device_ptr(argc // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(i) // expected-error {{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(j) // expected-error {{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(k) // OK
+  {}
+#pragma omp target data map(i) use_device_ptr(z) // OK
+  {}
+#pragma omp target data map(i) use_device_ptr(aa) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(e) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(g) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(k,i,j) // expected-error2 {{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(d) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+#pragma omp target data map(i) use_device_ptr(da) // expected-error{{expected pointer or reference to pointer in 'use_device_ptr' clause}}
+  {}
+  return tmain<int, 3>(argc); // expected-note {{in instantiation of function template specialization 'tmain<int, 3>' requested here}}
+}