clang/test/SemaCUDA/amdgpu-bf16.cu

// REQUIRES: amdgpu-registered-target
// REQUIRES: x86-registered-target

// RUN: %clang_cc1 "-triple" "x86_64-unknown-linux-gnu" "-aux-triple" "amdgcn-amd-amdhsa"\
// RUN:    "-target-cpu" "x86-64" -fsyntax-only -verify=amdgcn %s
// RUN: %clang_cc1 "-aux-triple" "x86_64-unknown-linux-gnu" "-triple" "amdgcn-amd-amdhsa"\
// RUN:    -fcuda-is-device "-aux-target-cpu" "x86-64" -fsyntax-only -verify=amdgcn %s

// RUN: %clang_cc1 "-aux-triple" "x86_64-unknown-linux-gnu" "-triple" "r600-unknown-unknown"\
// RUN:    -fcuda-is-device "-aux-target-cpu" "x86-64" -fsyntax-only -verify=amdgcn,r600 %s

// AMDGCN has storage-only support for bf16. R600 does not support it should error out when
// it's the main target.

#include "Inputs/cuda.h"

// There should be no errors on using the type itself, or when loading/storing values for amdgcn.
// r600 should error on all uses of the type.

// r600-error@+1 {{__bf16 is not supported on this target}}
typedef __attribute__((ext_vector_type(2))) __bf16 bf16_x2;
// r600-error@+1 {{__bf16 is not supported on this target}}
typedef __attribute__((ext_vector_type(4))) __bf16 bf16_x4;
// r600-error@+1 {{__bf16 is not supported on this target}}
typedef __attribute__((ext_vector_type(8))) __bf16 bf16_x8;
// r600-error@+1 {{__bf16 is not supported on this target}}
typedef __attribute__((ext_vector_type(16))) __bf16 bf16_x16;

// r600-error@+1 2 {{__bf16 is not supported on this target}}
__device__ void test(bool b, __bf16 *out, __bf16 in) {
  __bf16 bf16 = in;  // r600-error {{__bf16 is not supported on this target}}

  bf16 + bf16; // amdgcn-error {{invalid operands to binary expression ('__bf16' and '__bf16')}}
  bf16 - bf16; // amdgcn-error {{invalid operands to binary expression ('__bf16' and '__bf16')}}
  bf16 * bf16; // amdgcn-error {{invalid operands to binary expression ('__bf16' and '__bf16')}}
  bf16 / bf16; // amdgcn-error {{invalid operands to binary expression ('__bf16' and '__bf16')}}

  __fp16 fp16;

  bf16 + fp16; // amdgcn-error {{invalid operands to binary expression ('__bf16' and '__fp16')}}
  fp16 + bf16; // amdgcn-error {{invalid operands to binary expression ('__fp16' and '__bf16')}}
  bf16 - fp16; // amdgcn-error {{invalid operands to binary expression ('__bf16' and '__fp16')}}
  fp16 - bf16; // amdgcn-error {{invalid operands to binary expression ('__fp16' and '__bf16')}}
  bf16 * fp16; // amdgcn-error {{invalid operands to binary expression ('__bf16' and '__fp16')}}
  fp16 * bf16; // amdgcn-error {{invalid operands to binary expression ('__fp16' and '__bf16')}}
  bf16 / fp16; // amdgcn-error {{invalid operands to binary expression ('__bf16' and '__fp16')}}
  fp16 / bf16; // amdgcn-error {{invalid operands to binary expression ('__fp16' and '__bf16')}}
  bf16 = fp16; // amdgcn-error {{assigning to '__bf16' from incompatible type '__fp16'}}
  fp16 = bf16; // amdgcn-error {{assigning to '__fp16' from incompatible type '__bf16'}}
  bf16 + (b ? fp16 : bf16); // amdgcn-error {{incompatible operand types ('__fp16' and '__bf16')}}
  *out = bf16;

  // amdgcn-error@+1 {{static_cast from '__bf16' to 'unsigned short' is not allowed}}
  unsigned short u16bf16 = static_cast<unsigned short>(bf16);
  // amdgcn-error@+2 {{C-style cast from 'unsigned short' to '__bf16' is not allowed}}
  // r600-error@+1 {{__bf16 is not supported on this target}}
  bf16 = (__bf16)u16bf16;

  // amdgcn-error@+1 {{static_cast from '__bf16' to 'float' is not allowed}}
  float f32bf16 = static_cast<float>(bf16);
  // amdgcn-error@+2 {{C-style cast from 'float' to '__bf16' is not allowed}}
  // r600-error@+1 {{__bf16 is not supported on this target}}
  bf16 = (__bf16)f32bf16;

  // amdgcn-error@+1 {{static_cast from '__bf16' to 'double' is not allowed}}
  double f64bf16 = static_cast<double>(bf16);
  // amdgcn-error@+2 {{C-style cast from 'double' to '__bf16' is not allowed}}
  // r600-error@+1 {{__bf16 is not supported on this target}}
  bf16 = (__bf16)f64bf16;

  // r600-error@+1 {{__bf16 is not supported on this target}}
  typedef __attribute__((ext_vector_type(2))) __bf16 bf16_x2;
  bf16_x2 vec2_a, vec2_b;
  vec2_a = vec2_b;

  // r600-error@+1 {{__bf16 is not supported on this target}}
  typedef __attribute__((ext_vector_type(4))) __bf16 bf16_x4;
  bf16_x4 vec4_a, vec4_b;
  vec4_a = vec4_b;

  // r600-error@+1 {{__bf16 is not supported on this target}}
  typedef __attribute__((ext_vector_type(8))) __bf16 bf16_x8;
  bf16_x8 vec8_a, vec8_b;
  vec8_a = vec8_b;

  // r600-error@+1 {{__bf16 is not supported on this target}}
  typedef __attribute__((ext_vector_type(16))) __bf16 bf16_x16;
  bf16_x16 vec16_a, vec16_b;
  vec16_a = vec16_b;
}

// r600-error@+1 2 {{__bf16 is not supported on this target}}
__bf16 hostfn(__bf16 a) {
  return a;
}

// r600-error@+2 {{__bf16 is not supported on this target}}
// r600-error@+1 {{vector size not an integral multiple of component size}}
typedef __bf16 foo __attribute__((__vector_size__(16), __aligned__(16)));