clang/test/CodeGenOpenCL/sampler.cl

   1 // RUN: %clang_cc1 -no-opaque-pointers %s -emit-llvm -triple spir-unknown-unknown -o - -O0 | FileCheck %s
   2 // RUN: %clang_cc1 -no-opaque-pointers %s -cl-std=CL2.0 -emit-llvm -triple spir-unknown-unknown -o - -O0 | FileCheck %s
   3 // RUN: %clang_cc1 -no-opaque-pointers %s -cl-std=clc++ -emit-llvm -triple spir-unknown-unknown -o - -O0 | FileCheck %s
   4 //
   5 // This test covers 5 cases of sampler initialzation:
   6 //   1. function argument passing
   7 //      1a. argument is a file-scope variable
   8 //      1b. argument is a function-scope variable
   9 //      1c. argument is one of caller function's parameters
  10 //   2. variable initialization
  11 //      2a. initializing a file-scope variable with constant addr space qualifier
  12 //      2b. initializing a function-scope variable
  13 //      2c. initializing a file-scope variable with const qualifier
  14
  15 #define CLK_ADDRESS_CLAMP_TO_EDGE       2
  16 #define CLK_NORMALIZED_COORDS_TRUE      1
  17 #define CLK_FILTER_NEAREST              0x10
  18 #define CLK_FILTER_LINEAR               0x20
  19
  20 // CHECK: %opencl.sampler_t = type opaque
  21
  22 // Case 2a
  23 constant sampler_t glb_smp = CLK_ADDRESS_CLAMP_TO_EDGE | CLK_NORMALIZED_COORDS_TRUE | CLK_FILTER_LINEAR;
  24 // CHECK-NOT: glb_smp
  25
  26 // Case 2c
  27 const sampler_t glb_smp_const = CLK_ADDRESS_CLAMP_TO_EDGE | CLK_NORMALIZED_COORDS_TRUE | CLK_FILTER_LINEAR;
  28 // CHECK-NOT: glb_smp_const
  29
  30 int get_sampler_initializer(void);
  31
  32 void fnc4smp(sampler_t s) {}
  33 // CHECK: define{{.*}} spir_func void [[FUNCNAME:@.*fnc4smp.*]](%opencl.sampler_t addrspace(2)* %
  34
  35 kernel void foo(sampler_t smp_par) {
  36   // CHECK-LABEL: define{{.*}} spir_kernel void @foo(%opencl.sampler_t addrspace(2)* %smp_par)
  37   // CHECK: [[smp_par_ptr:%[A-Za-z0-9_\.]+]] = alloca %opencl.sampler_t addrspace(2)*
  38
  39   // Case 2b
  40   sampler_t smp = CLK_ADDRESS_CLAMP_TO_EDGE | CLK_NORMALIZED_COORDS_TRUE | CLK_FILTER_NEAREST;
  41   // CHECK: [[smp_ptr:%[A-Za-z0-9_\.]+]] = alloca %opencl.sampler_t addrspace(2)*
  42   // CHECK: [[SAMP:%[0-9]+]] = call spir_func %opencl.sampler_t addrspace(2)* @__translate_sampler_initializer(i32 19)
  43   // CHECK: store %opencl.sampler_t addrspace(2)* [[SAMP]], %opencl.sampler_t addrspace(2)** [[smp_ptr]]
  44
  45   // Case 1b
  46   fnc4smp(smp);
  47   // CHECK-NOT: call %opencl.sampler_t addrspace(2)* @__translate_sampler_initializer(i32 19)
  48   // CHECK: [[SAMP:%[0-9]+]] = load %opencl.sampler_t addrspace(2)*, %opencl.sampler_t addrspace(2)** [[smp_ptr]]
  49   // CHECK: call spir_func void [[FUNCNAME]](%opencl.sampler_t addrspace(2)* [[SAMP]])
  50
  51   // Case 1b
  52   fnc4smp(smp);
  53   // CHECK-NOT: call %opencl.sampler_t addrspace(2)* @__translate_sampler_initializer(i32 19)
  54   // CHECK: [[SAMP:%[0-9]+]] = load %opencl.sampler_t addrspace(2)*, %opencl.sampler_t addrspace(2)** [[smp_ptr]]
  55   // CHECK: call spir_func void [[FUNCNAME]](%opencl.sampler_t addrspace(2)* [[SAMP]])
  56
  57   // Case 1a/2a
  58   fnc4smp(glb_smp);
  59   // CHECK: [[SAMP:%[0-9]+]] = call spir_func %opencl.sampler_t addrspace(2)* @__translate_sampler_initializer(i32 35)
  60   // CHECK: call spir_func void [[FUNCNAME]](%opencl.sampler_t addrspace(2)* [[SAMP]])
  61
  62   // Case 1a/2c
  63   fnc4smp(glb_smp_const);
  64   // CHECK: [[SAMP:%[0-9]+]] = call spir_func %opencl.sampler_t addrspace(2)* @__translate_sampler_initializer(i32 35)
  65   // CHECK: call spir_func void [[FUNCNAME]](%opencl.sampler_t addrspace(2)* [[SAMP]])
  66
  67   // Case 1c
  68   fnc4smp(smp_par);
  69   // CHECK: [[SAMP:%[0-9]+]] = load %opencl.sampler_t addrspace(2)*, %opencl.sampler_t addrspace(2)** [[smp_par_ptr]]
  70   // CHECK: call spir_func void [[FUNCNAME]](%opencl.sampler_t addrspace(2)* [[SAMP]])
  71
  72   fnc4smp(5);
  73   // CHECK: [[SAMP:%[0-9]+]] = call spir_func %opencl.sampler_t addrspace(2)* @__translate_sampler_initializer(i32 5)
  74   // CHECK: call spir_func void [[FUNCNAME]](%opencl.sampler_t addrspace(2)* [[SAMP]])
  75
  76   const sampler_t const_smp = CLK_ADDRESS_CLAMP_TO_EDGE | CLK_NORMALIZED_COORDS_TRUE | CLK_FILTER_LINEAR;
  77   fnc4smp(const_smp);
  78    // CHECK: [[CONST_SAMP:%[0-9]+]] = call spir_func %opencl.sampler_t addrspace(2)* @__translate_sampler_initializer(i32 35)
  79   // CHECK: store %opencl.sampler_t addrspace(2)* [[CONST_SAMP]], %opencl.sampler_t addrspace(2)** [[CONST_SMP_PTR:%[a-zA-Z0-9]+]]
  80   fnc4smp(const_smp);
  81   // CHECK: [[SAMP:%[0-9]+]] = load %opencl.sampler_t addrspace(2)*, %opencl.sampler_t addrspace(2)** [[CONST_SMP_PTR]]
  82   // CHECK: call spir_func void [[FUNCNAME]](%opencl.sampler_t addrspace(2)* [[SAMP]])
  83
  84   constant sampler_t constant_smp = CLK_ADDRESS_CLAMP_TO_EDGE | CLK_NORMALIZED_COORDS_TRUE | CLK_FILTER_LINEAR;
  85   fnc4smp(constant_smp);
  86   // CHECK: [[SAMP:%[0-9]+]] = call spir_func %opencl.sampler_t addrspace(2)* @__translate_sampler_initializer(i32 35)
  87   // CHECK: call spir_func void [[FUNCNAME]](%opencl.sampler_t addrspace(2)* [[SAMP]])
  88
  89   // TODO: enable sampler initialization with non-constant integer.
  90   //const sampler_t const_smp_func_init = get_sampler_initializer();
  91 }