[Mlir-commits] [mlir] [mlir][sparse] support sparsification to coiterate operations. (PR #102546)

[Aart Bik]

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@@ -2594,6 +2594,22 @@ void IterateOp::getSuccessorRegions(RegionBranchPoint point,
   regions.push_back(RegionSuccessor(getResults()));
 }
 
+void CoIterateOp::build(OpBuilder &builder, OperationState &odsState,
+                        ValueRange iterSpaces, ValueRange initArgs,
+                        unsigned numCases) {
+  unsigned rank =
+      cast<IterSpaceType>(iterSpaces.front().getType()).getSpaceDim();
+  // All ones.
+  I64BitSet set((1 << rank) - 1);
+  // Fake cases bits. We need to preallocate all the regions as Region can not
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aartbik wrote:

can not -> cannot

but more importantly, I don't understand the comment completely. Is "Fake" a verb, as in fake the cases?
Can you rewrite a bit?

https://github.com/llvm/llvm-project/pull/102546