clang/test/CodeGenOpenCL/address-spaces-conversions.cl

// RUN: %clang_cc1 %s -triple x86_64-unknown-linux-gnu -O0 -ffake-address-space-map -cl-std=CL2.0 -emit-llvm -o - | FileCheck %s
// RUN: %clang_cc1 %s -triple x86_64-unknown-linux-gnu -O0 -ffake-address-space-map -cl-std=CL3.0 -cl-ext=+__opencl_c_generic_address_space -emit-llvm -o - | FileCheck %s
// RUN: %clang_cc1 %s -triple x86_64-unknown-linux-gnu -O0 -cl-std=CL2.0 -emit-llvm -o - | FileCheck --check-prefix=CHECK-NOFAKE %s
// RUN: %clang_cc1 %s -triple x86_64-unknown-linux-gnu -O0 -cl-std=CL3.0 -cl-ext=+__opencl_c_generic_address_space -emit-llvm -o - | FileCheck --check-prefix=CHECK-NOFAKE %s
// When -ffake-address-space-map is not used, all addr space mapped to 0 for x86_64.

// test that we generate address space casts everywhere we need conversions of
// pointers to different address spaces

// CHECK: define{{.*}} void @test
void test(global int *arg_glob, generic int *arg_gen,
          __attribute__((opencl_global_device)) int *arg_device,
          __attribute__((opencl_global_host)) int *arg_host) {
  int var_priv;
  arg_gen = arg_glob; // implicit cast global -> generic
  // CHECK: %{{[0-9]+}} = addrspacecast ptr addrspace(1) %{{[0-9]+}} to ptr addrspace(4)
  // CHECK-NOFAKE-NOT: addrspacecast

  arg_gen = &var_priv; // implicit cast with obtaining adr, private -> generic
  // CHECK: %{{[._a-z0-9]+}} = addrspacecast ptr %{{[._a-z0-9]+}} to ptr addrspace(4)
  // CHECK-NOFAKE-NOT: addrspacecast

  arg_glob = (global int *)arg_gen; // explicit cast
  // CHECK: %{{[0-9]+}} = addrspacecast ptr addrspace(4) %{{[0-9]+}} to ptr addrspace(1)
  // CHECK-NOFAKE-NOT: addrspacecast

  global int *var_glob =
      (global int *)arg_glob; // explicit cast in the same address space
  // CHECK-NOT: %{{[0-9]+}} = addrspacecast ptr addrspace(1) %{{[0-9]+}} to ptr addrspace(1)
  // CHECK-NOFAKE-NOT: addrspacecast

  var_priv = arg_gen - arg_glob; // arithmetic operation
  // CHECK: %{{.*}} = ptrtoint ptr addrspace(4) %{{.*}} to i64
  // CHECK: %{{.*}} = ptrtoint ptr addrspace(1) %{{.*}} to i64
  // CHECK-NOFAKE: %{{.*}} = ptrtoint ptr %{{.*}} to i64
  // CHECK-NOFAKE: %{{.*}} = ptrtoint ptr %{{.*}} to i64

  var_priv = arg_gen > arg_glob; // comparison
  // CHECK: %{{[0-9]+}} = addrspacecast ptr addrspace(1) %{{[0-9]+}} to ptr addrspace(4)

  generic void *var_gen_v = arg_glob;
  // CHECK: addrspacecast
  // CHECK-NOFAKE-NOT: addrspacecast

  arg_glob = arg_device; // implicit cast
  // CHECK: addrspacecast
  // CHECK-NOFAKE-NOT: addrspacecast

  arg_glob = arg_host; // implicit cast
  // CHECK: addrspacecast
  // CHECK-NOFAKE-NOT: addrspacecast

  arg_glob = (global int *)arg_device; // explicit cast
  // CHECK: addrspacecast
  // CHECK-NOFAKE-NOT: addrspacecast

  arg_glob = (global int *)arg_host; // explicit cast
  // CHECK: addrspacecast
  // CHECK-NOFAKE-NOT: addrspacecast

  arg_device = (__attribute((opencl_global_device)) int *)arg_glob; // explicit cast
  // CHECK: addrspacecast
  // CHECK-NOFAKE-NOT: addrspacecast

  arg_host = (__attribute((opencl_global_host)) int *)arg_glob; // explicit cast
  // CHECK: addrspacecast
  // CHECK-NOFAKE-NOT: addrspacecast
}

// Test ternary operator.
// CHECK: define{{.*}} void @test_ternary
void test_ternary(void) {
  global int *var_glob;
  generic int *var_gen;
  generic int *var_gen2;
  generic float *var_gen_f;
  generic void *var_gen_v;

  var_gen = var_gen ? var_gen : var_gen2; // operands of the same addr spaces and the same type
  // CHECK: icmp
  // CHECK-NOT: addrspacecast
  // CHECK: phi
  // CHECK: store ptr addrspace(4) %{{.+}}, ptr %{{.+}}

  var_gen = var_gen ? var_gen : var_glob; // operands of overlapping addr spaces and the same type
  // CHECK: icmp
  // CHECK: %{{.+}} = addrspacecast ptr addrspace(1) %{{.+}} to ptr addrspace(4)
  // CHECK: phi
  // CHECK: store

  typedef int int_t;
  global int_t *var_glob_typedef;
  var_gen = var_gen ? var_gen : var_glob_typedef; // operands of overlapping addr spaces and equivalent types
  // CHECK: icmp
  // CHECK: %{{.+}} = addrspacecast ptr addrspace(1) %{{.+}} to ptr addrspace(4)
  // CHECK: phi
  // CHECK: store
 
  var_gen_v = var_gen ? var_gen : var_gen_f; // operands of the same addr space and different types
  // CHECK: icmp
  // CHECK: phi
  // CHECK: store

  var_gen_v = var_gen ? var_glob : var_gen_f; // operands of overlapping addr spaces and different types
  // CHECK: icmp
  // CHECK: %{{.+}} = addrspacecast ptr addrspace(1) %{{.+}} to ptr addrspace(4)
  // CHECK: phi
  // CHECK: store
}