clang/test/OpenMP/nvptx_allocate_codegen.cpp

// RUN: %clang_cc1 -verify -fopenmp -triple x86_64-apple-darwin10.6.0 -fopenmp-targets=nvptx64-nvidia-cuda  -emit-llvm-bc -o %t-host.bc %s
// RUN: %clang_cc1 -verify -fopenmp -triple nvptx64-nvidia-cuda -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-host.bc -o - -disable-llvm-optzns | FileCheck %s
// expected-no-diagnostics

#ifndef HEADER
#define HEADER

#pragma omp declare target
typedef void **omp_allocator_handle_t;
extern const omp_allocator_handle_t omp_default_mem_alloc;
extern const omp_allocator_handle_t omp_large_cap_mem_alloc;
extern const omp_allocator_handle_t omp_const_mem_alloc;
extern const omp_allocator_handle_t omp_high_bw_mem_alloc;
extern const omp_allocator_handle_t omp_low_lat_mem_alloc;
extern const omp_allocator_handle_t omp_cgroup_mem_alloc;
extern const omp_allocator_handle_t omp_pteam_mem_alloc;
extern const omp_allocator_handle_t omp_thread_mem_alloc;

// CHECK-DAG: @{{.+}}St1{{.+}}b{{.+}} = external global i32,
// CHECK-DAG: @a ={{ dso_local | }}global i32 0,
// CHECK-DAG: @b ={{ dso_local | }}addrspace(4) global i32 0,
// CHECK-DAG: @c ={{ dso_local | }}global i32 0,
// CHECK-DAG: @d ={{ dso_local | }}global %struct.St1 zeroinitializer,
// CHECK-DAG: @{{.+}}ns{{.+}}a{{.+}} ={{ dso_local | }}addrspace(3) global i32 0,
// CHECK-DAG: @{{.+}}main{{.+}}a{{.*}} = internal global i32 0,
// CHECK-DAG: @{{.+}}ST{{.+}}m{{.+}} = external global i32,
// CHECK-DAG: @bar_c = internal global i32 0,
// CHECK-DAG: @bar_b = internal addrspace(3) global double 0.000000e+00,
struct St{
 int a;
};

struct St1{
 int a;
 static int b;
#pragma omp allocate(b) allocator(omp_default_mem_alloc)
} d;

int a, b, c;
#pragma omp allocate(a) allocator(omp_large_cap_mem_alloc)
#pragma omp allocate(b) allocator(omp_const_mem_alloc)
#pragma omp allocate(d, c) allocator(omp_high_bw_mem_alloc)

template <class T>
struct ST {
  static T m;
  #pragma omp allocate(m) allocator(omp_low_lat_mem_alloc)
};

template <class T> T foo() {
  T v;
  #pragma omp allocate(v) allocator(omp_cgroup_mem_alloc)
  v = ST<T>::m;
  return v;
}

namespace ns{
  int a;
}
#pragma omp allocate(ns::a) allocator(omp_pteam_mem_alloc)

// CHECK-LABEL: @main
int main () {
  // CHECK: alloca double,
  static int a;
#pragma omp allocate(a) allocator(omp_thread_mem_alloc)
  a=2;
  double b = 3;
  float c;
#pragma omp allocate(b) allocator(omp_default_mem_alloc)
#pragma omp allocate(c) allocator(omp_cgroup_mem_alloc)
  return (foo<int>());
}

// CHECK: define {{.*}}i32 @{{.+}}foo{{.+}}()
// CHECK-NOT: alloca i32,

extern template int ST<int>::m;

void baz(float &);

// CHECK: define{{ dso_local | }}void @{{.+}}bar{{.+}}()
void bar() {
  // CHECK: alloca float,
  float bar_a;
  // CHECK: alloca double,
  double bar_b;
  int bar_c;
#pragma omp allocate(bar_c) allocator(omp_cgroup_mem_alloc)
  // CHECK: call void [[OUTLINED:@.+]](i32* %{{.+}}, i32* %{{.+}})
#pragma omp parallel private(bar_a, bar_b) allocate(omp_thread_mem_alloc                  \
                                                    : bar_a) allocate(omp_pteam_mem_alloc \
                                                                      : bar_b)
  {
    bar_b = bar_a;
    baz(bar_a);
  }
// CHECK: define internal void [[OUTLINED]](i32* noalias %{{.+}}, i32* noalias %{{.+}})
// CHECK-NOT: alloca double,
// CHECK: alloca float,
// CHECK-NOT: alloca double,
// CHECK: load float, float* %
// CHECK: store double {{.+}}, double addrspace(3)* @bar_b,
}

#pragma omp end declare target
#endif