[Mlir-commits] [mlir] [mlir][gpu] Add gpu.ballot operation to GPU dialect (PR #188647)

[Mehdi Amini]

================
@@ -2619,6 +2619,24 @@ OpFoldResult gpu::SubgroupBroadcastOp::fold(FoldAdaptor /*adaptor*/) {
   return nullptr;
 }
 
+//===----------------------------------------------------------------------===//
+// GPU_BallotOp
+//===----------------------------------------------------------------------===//
+
+Speculation::Speculatability gpu::BallotOp::getSpeculatability() {
+  // Ballot depends on active lanes, cannot speculate across control flow.
+  return Speculation::NotSpeculatable;
+}
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joker-eph wrote:

Why mark is conditionally specula table if it isn't?

https://github.com/llvm/llvm-project/pull/188647