llvm/clang/test/CodeGenSYCL/inline_asm.cpp at 2663a3234094e28737b135ee918923dc9be085ba · AaronBallman/llvm · GitHub

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// RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown-sycldevice -emit-llvm -x c++ %s -o - | FileCheck %s

class kernel;

template <typename name, typename Func>
__attribute__((sycl_kernel)) void kernel_single_task(const Func &kernelFunc) {
  // CHECK: %[[ARRAY_A:[0-9a-z]+]] = alloca [100 x i32], align 4
  // CHECK: %[[IDX:.*]] = getelementptr inbounds [100 x i32], [100 x i32]* %[[ARRAY_A]], i64 0, i64 0
  // CHECK: %[[IDX4:.*]] = addrspacecast i32* %[[IDX]] to i32 addrspace(4)*
  int a[100], i = 0;
  // CHECK-NEXT: call void asm sideeffect
  // CHECK: ".decl V52 v_type=G type=d num_elts=16 align=GRF
  // CHECK: svm_gather.4.1 (M1, 16) $0.0 V52.0
  // CHECK: add(M1, 16) V52(0, 0)<1> V52(0, 0)<1; 1, 0> 0x1
  // CHECK: svm_scatter.4.1 (M1, 16) $0.0 V52.0",
  // CHECK: "rw"(i32 addrspace(4)* %[[IDX4]])
  // TODO: nonnull attribute missing?
  asm volatile(".decl V52 v_type=G type=d num_elts=16 align=GRF\n"
               "svm_gather.4.1 (M1, 16) %0.0 V52.0\n"
               "add(M1, 16) V52(0, 0)<1> V52(0, 0)<1; 1, 0> 0x1\n"
               "svm_scatter.4.1 (M1, 16) %0.0 V52.0"
               :
               : "rw"(&a[i]));
}

int main() {
  kernel_single_task<class kernel>([]() {});
  return 0;
}