[Mlir-commits] [mlir] [mlir][bufferization] Adding the optimize-allocation-liveness pass (PR #101827)

[Matthias Springer]

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@@ -232,6 +232,22 @@ def OwnershipBasedBufferDeallocation : Pass<
   ];
 }
 
+
+def OptimizeAllocationliveness : Pass<
+    "optimize-allocation-liveness", "func::FuncOp"> {
+  let summary = "This pass optimizes the liveness of temp allocations in the input function";
+  let description = [{
+    This pass will go over all the allocations that also have deallocations in the same block i.e. temp buffers.
+    And find the last user/dependency of that allocation , it attempts to move the deallocation right after that last user. 
+    This will optimize liveness of the allocations to the minimum.
+    The pass is expected to run after the deallocating pipeline, which places all deallocation at the end of the function.
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matthias-springer wrote:

after the `ownership-based buffer deallocation pipeline`


https://github.com/llvm/llvm-project/pull/101827