DPCT1101

Intel® DPC++ Compatibility Tool Developer Guide and Reference

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ID 768918

Date 10/31/2024

Version

Public

Visible to Intel only — GUID: GUID-9BAAEEB5-1860-4C98-A778-0CD4D695FDE4

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DPCT1101

Message

<expression text> expression was replaced with a value. Modify the code to use the original expression, provided in comments, if it is correct.

Detailed Help

Identities, including constant variable names, types, and macros, used in the migrated SYCL* code are replaced with their value since they may not be available in the code scope. User can replace the value with the original expression listed in the comment manually after confirming that the identities are available in the code scope.

Suggestions to Fix

Use a macro or const variable to replace the value.

For example, this original CUDA* code:

  __global__ void f() {
    const int x = 2;
    __shared__ int fold[x];
    ...
  }

  int main() {
    f<<<1, 1>>>();
    return 0;
  }

results in the following migrated SYCL code:

  void f(int *fold) {
    const int x = 2;
    ...
  }

  int main() {
    dpct::get_in_order_queue().submit([&](sycl::handler &cgh) {
      /*
      DPCT1101:0: 'x' expression was replaced with a value. Modify the code to
      use the original expression, provided in comments, if it is correct.
      */
      sycl::local_accessor<int, 1> fold_acc_ct1(sycl::range<1>(2 /*x*/), cgh);

      cgh.parallel_for(
          sycl::nd_range<3>(sycl::range<3>(1, 1, 1), sycl::range<3>(1, 1, 1)),
          [=](sycl::nd_item<3> item_ct1) {
            f(fold_acc_ct1.get_pointer());
          });
    });
    return 0;
  }

which is rewritten to:

  const int x = 2;
  void f(int *fold) {
    ...
  }

  int main() {
    dpct::get_in_order_queue().submit([&](sycl::handler &cgh) {
      sycl::local_accessor<int, 1> fold_acc_ct1(sycl::range<1>(x), cgh);

      cgh.parallel_for(
          sycl::nd_range<3>(sycl::range<3>(1, 1, 1), sycl::range<3>(1, 1, 1)),
          [=](sycl::nd_item<3> item_ct1) {
            f(fold_acc_ct1.get_pointer());
          });
    });
    return 0;
  }

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Intel® DPC++ Compatibility Tool Developer Guide and Reference

DPCT1101

Message

Detailed Help

Suggestions to Fix