clang/test/CodeGenCXX/amdgpu-kernel-arg-pointer-type.cpp

   1 // REQUIRES: amdgpu-registered-target
   2
   3 // RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -emit-llvm %s -o - | FileCheck --check-prefixes=COMMON,CHECK %s
   4
   5 // Derived from CodeGenCUDA/amdgpu-kernel-arg-pointer-type.cu by deleting references to HOST
   6 // The original test passes the result through opt O2, but that seems to introduce invalid
   7 // addrspace casts which are not being fixed as part of the present change.
   8
   9 // COMMON: define{{.*}} amdgpu_kernel void @_Z6kernelv() #[[ATTR:[0-9]+]]
  10 __attribute__((amdgpu_kernel, amdgpu_flat_work_group_size(1, 256))) void
  11     kernel() {}
  12
  13 // COMMON-LABEL: define{{.*}} amdgpu_kernel void @_Z7kernel1Pi(ptr {{.*}} %x)
  14 // CHECK-NOT: ={{.*}} addrspacecast [[TYPE:.*]] addrspace(1)* %{{.*}} to ptr
  15 __attribute__((amdgpu_kernel)) void kernel1(int *x) {
  16   x[0]++;
  17 }
  18
  19 // COMMON-LABEL: define{{.*}} amdgpu_kernel void @_Z7kernel2Ri(ptr {{.*}} nonnull align 4 dereferenceable(4) %x)
  20 // CHECK-NOT: ={{.*}} addrspacecast [[TYPE:.*]] addrspace(1)* %{{.*}} to ptr
  21 __attribute__((amdgpu_kernel)) void kernel2(int &x) {
  22   x++;
  23 }
  24
  25 // CHECK-LABEL: define{{.*}} amdgpu_kernel void  @_Z7kernel3PU3AS2iPU3AS1i(ptr addrspace(2){{.*}} %x, ptr addrspace(1){{.*}} %y)
  26 // CHECK-NOT: ={{.*}} addrspacecast [[TYPE:.*]] addrspace(1)* %{{.*}} to ptr
  27 __attribute__((amdgpu_kernel)) void kernel3(__attribute__((address_space(2))) int *x,
  28                                             __attribute__((address_space(1))) int *y) {
  29   y[0] = x[0];
  30 }
  31
  32 // COMMON-LABEL: define{{.*}} void @_Z4funcPi(ptr{{.*}} %x)
  33 // CHECK-NOT: ={{.*}} addrspacecast [[TYPE:.*]] addrspace(1)* %{{.*}} to ptr
  34 __attribute__((amdgpu_kernel)) void func(int *x) {
  35   x[0]++;
  36 }
  37
  38 struct S {
  39   int *x;
  40   float *y;
  41 };
  42 // `by-val` struct is passed by-indirect-alias (a mix of by-ref and indirect
  43 // by-val). However, the enhanced address inferring pass should be able to
  44 // assume they are global pointers.
  45 //
  46
  47 // COMMON-LABEL: define{{.*}} amdgpu_kernel void @_Z7kernel41S(ptr addrspace(4){{.*}} byref(%struct.S) align 8 %0)
  48 __attribute__((amdgpu_kernel)) void kernel4(struct S s) {
  49   s.x[0]++;
  50   s.y[0] += 1.f;
  51 }
  52
  53 // COMMON-LABEL: define{{.*}} amdgpu_kernel void @_Z7kernel5P1S(ptr {{.*}} %s)
  54 __attribute__((amdgpu_kernel)) void kernel5(struct S *s) {
  55   s->x[0]++;
  56   s->y[0] += 1.f;
  57 }
  58
  59 struct T {
  60   float *x[2];
  61 };
  62 // `by-val` array is passed by-indirect-alias (a mix of by-ref and indirect
  63 // by-val). However, the enhanced address inferring pass should be able to
  64 // assume they are global pointers.
  65 //
  66 // COMMON-LABEL: define{{.*}} amdgpu_kernel void @_Z7kernel61T(ptr addrspace(4){{.*}} byref(%struct.T) align 8 %0)
  67 __attribute__((amdgpu_kernel)) void kernel6(struct T t) {
  68   t.x[0][0] += 1.f;
  69   t.x[1][0] += 2.f;
  70 }
  71
  72 // Check that coerced pointers retain the noalias attribute when qualified with __restrict.
  73 // COMMON-LABEL: define{{.*}} amdgpu_kernel void @_Z7kernel7Pi(ptr noalias{{.*}} %x)
  74 __attribute__((amdgpu_kernel)) void kernel7(int *__restrict x) {
  75   x[0]++;
  76 }
  77
  78 // Single element struct.
  79 struct SS {
  80   float *x;
  81 };
  82 // COMMON-LABEL: define{{.*}} amdgpu_kernel void @_Z7kernel82SS(ptr %a.coerce)
  83 // CHECK-NOT: ={{.*}} addrspacecast [[TYPE:.*]] addrspace(1)* %{{.*}} to ptr
  84 __attribute__((amdgpu_kernel)) void kernel8(struct SS a) {
  85   *a.x += 3.f;
  86 }
  87
  88 // COMMON: attributes #[[ATTR]] = { {{.*}}"amdgpu-flat-work-group-size"="1,256"{{.*}} }