[Mlir-commits] [mlir] [mlir][spirv][gpu] Add lowering for `gpu.subgroup_broadcast` (PR #185818)

[Igor Wodiany]

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@@ -269,6 +269,55 @@ def SPIRV_GroupNonUniformBroadcastOp : SPIRV_Op<"GroupNonUniformBroadcast",
 
 // -----
 
+def SPIRV_GroupNonUniformBroadcastFirstOp : SPIRV_Op<"GroupNonUniformBroadcastFirst",
+  [Pure, AllTypesMatch<["value", "result"]>]> {
+  let summary = [{
+    Result is the Value of the invocation from the active invocations with 
+    the lowest id in the group to all active invocations in the group.
+  }];
+
+  let description = [{
+    Result Type  must be a scalar or vector of floating-point type, integer
+    type, or Boolean type.
+
+    Execution must be Workgroup or Subgroup Scope.
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IgWod wrote:

This doesn't seem to match spec.

https://github.com/llvm/llvm-project/pull/185818