[llvm-branch-commits] [llvm] [libsycl] add single_task (PR #188797)

[Kseniya Tikhomirova via llvm-branch-commits]

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@@ -16,6 +16,32 @@ _LIBSYCL_BEGIN_NAMESPACE_SYCL
 
 namespace detail {
 
+static void setKernelLaunchArgs(const detail::UnifiedRangeView &Range,
+                                ol_kernel_launch_size_args_t &ArgsToSet) {
+  size_t GlobalSize[3] = {1, 1, 1};
+  if (Range.MGlobalSize) {
+    for (uint32_t I = 0; I < Range.MDims; I++) {
+      GlobalSize[I] = Range.MGlobalSize[I];
+    }
+  }
+
+  size_t GroupSize[3] = {1, 1, 1};
+  if (Range.MLocalSize) {
+    for (uint32_t I = 0; I < Range.MDims; I++) {
+      GroupSize[I] = Range.MLocalSize[I];
+    }
+  }
+
+  ArgsToSet.Dimensions = Range.MDims;
+  ArgsToSet.NumGroups.x = GlobalSize[0] / GroupSize[0];
+  ArgsToSet.NumGroups.y = GlobalSize[1] / GroupSize[1];
+  ArgsToSet.NumGroups.z = GlobalSize[2] / GroupSize[2];
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KseniyaTikhomirova wrote:

Clarified with Greg, he created a Khronos issue to clarify this behavior in spec https://github.com/KhronosGroup/SYCL-Docs/issues/993.

main point is to define this behavior UB, we shouldn't handle it at all and allow dividing by 0


https://github.com/llvm/llvm-project/pull/188797