[Mlir-commits] [mlir] [MLIR] Prevent invalid IR from being passed outside of RemoveDeadValues (PR #121079)

[Andrzej Warzyński]

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@@ -72,15 +72,55 @@ using namespace mlir::dataflow;
 
 namespace {
 
+// Set of structures below to be filled with operations and arguments to erase.
+// This is done to separate analysis and tree modification phases,
+// otherwise analysis is operating on half-deleted tree which is incorrect.
+
+struct CleanupFunction {
+  FunctionOpInterface funcOp;
+  BitVector nonLiveArgs;
+  BitVector nonLiveRets;
+};
+
+struct CleanupOperands {
+  Operation *op;
+  BitVector nonLiveOperands;
+};
+
+struct CleanupResults {
+  Operation *op;
+  BitVector nonLiveResults;
+};
+
+struct CleanupBlockArgs {
+  Block *b;
+  BitVector nonLiveArgs;
+};
+
+struct CleanupSuccessorOperands {
+  BranchOpInterface branch;
+  unsigned index;
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banach-space wrote:

`index` of what?

https://github.com/llvm/llvm-project/pull/121079