[OPENMP] Treat local variables in CUDA mode as thread local.

In CUDA mode all local variables are actually thread
local|threadprivate, not private, and, thus, they cannot be shared
between threads|lanes.

llvm-svn: 326590

1 files changed, 108 insertions, 0 deletions

diff --git a/clang/test/OpenMP/nvptx_target_cuda_mode_messages.cpp b/clang/test/OpenMP/nvptx_target_cuda_mode_messages.cpp
new file mode 100644
index 00000000000..eecc26c6181
--- /dev/null
+++ b/clang/test/OpenMP/nvptx_target_cuda_mode_messages.cpp
@@ -0,0 +1,108 @@
+// RUN: %clang_cc1 -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm-bc %s -o %t-ppc-host.bc
+// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-cuda-mode -fopenmp-host-ir-file-path %t-ppc-host.bc -o -
+
+template <typename tx, typename ty>
+struct TT {
+  tx X;
+  ty Y;
+};
+
+int foo(int n, double *ptr) {
+  int a = 0;
+  short aa = 0;
+  float b[10];
+  double c[5][10];
+  TT<long long, char> d;
+
+#pragma omp target firstprivate(a) map(tofrom: b) // expected-note 2 {{defined as threadprivate or thread local}}
+  {
+    int c;                               // expected-note {{defined as threadprivate or thread local}}
+#pragma omp parallel shared(a, b, c, aa) // expected-error 3 {{threadprivate or thread local variable cannot be shared}}
+    b[a] = a;
+#pragma omp parallel for
+    for (int i = 0; i < 10; ++i) // expected-note {{defined as threadprivate or thread local}}
+#pragma omp parallel shared(i) // expected-error {{threadprivate or thread local variable cannot be shared}}
+    ++i;
+  }
+
+#pragma omp target map(aa, b, c, d)
+  {
+    int e;                         // expected-note {{defined as threadprivate or thread local}}
+#pragma omp parallel private(b, e) // expected-error {{threadprivate or thread local variable cannot be private}}
+    {
+      aa += 1;
+      b[2] = 1.0;
+      c[1][2] = 1.0;
+      d.X = 1;
+      d.Y = 1;
+    }
+  }
+
+#pragma omp target private(ptr)
+  {
+    ptr[0]++;
+  }
+
+  return a;
+}
+
+template <typename tx>
+tx ftemplate(int n) {
+  tx a = 0;
+  tx b[10];
+
+#pragma omp target reduction(+ \
+                             : a, b) // expected-note {{defined as threadprivate or thread local}}
+  {
+    int e;                        // expected-note {{defined as threadprivate or thread local}}
+#pragma omp parallel shared(a, e) // expected-error 2 {{threadprivate or thread local variable cannot be shared}}
+    a += 1;
+    b[2] += 1;
+  }
+
+  return a;
+}
+
+static int fstatic(int n) {
+  int a = 0;
+  char aaa = 0;
+  int b[10];
+
+#pragma omp target firstprivate(a, aaa, b)
+  {
+    a += 1;
+    aaa += 1;
+    b[2] += 1;
+  }
+
+  return a;
+}
+
+struct S1 {
+  double a;
+
+  int r1(int n) {
+    int b = n + 1;
+
+#pragma omp target firstprivate(b) // expected-note {{defined as threadprivate or thread local}}
+    {
+      int c;                      // expected-note {{defined as threadprivate or thread local}}
+#pragma omp parallel shared(b, c) // expected-error 2 {{threadprivate or thread local variable cannot be shared}}
+      this->a = (double)b + 1.5;
+    }
+
+    return (int)b;
+  }
+};
+
+int bar(int n, double *ptr) {
+  int a = 0;
+  a += foo(n, ptr);
+  S1 S;
+  a += S.r1(n);
+  a += fstatic(n);
+  a += ftemplate<int>(n); // expected-note {{in instantiation of function template specialization 'ftemplate<int>' requested here}}
+
+  return a;
+}
+