[MLIR] Fix pipelineInitializationKey never being correctly updated (#150948)

WillFroom · web-flow · commit 4b1d5b8d4f4d · 2025-07-28T15:47:12.000+01:00
Prior to this change `pipelineInitializationKey` would never be updated
so `initialize` would always be called even if the pipeline didn't
change
diff --git a/mlir/lib/Pass/Pass.cpp b/mlir/lib/Pass/Pass.cpp
@@ -901,7 +901,7 @@ LogicalResult PassManager::run(Operation *op) {
     if (failed(initialize(context, impl->initializationGeneration + 1)))
       return failure();
     initializationKey = newInitKey;
-    pipelineKey = pipelineInitializationKey;
+    pipelineInitializationKey = pipelineKey;
   }
 
   // Construct a top level analysis manager for the pipeline.

Original file line number	Diff line number	Diff line change
`@@ -901,7 +901,7 @@ LogicalResult PassManager::run(Operation *op) {`
`901`	`901`	`if (failed(initialize(context, impl->initializationGeneration + 1)))`
`902`	`902`	`return failure();`
`903`	`903`	`initializationKey = newInitKey;`
`904`		`- pipelineKey = pipelineInitializationKey;`
	`904`	`+ pipelineInitializationKey = pipelineKey;`
`905`	`905`	`}`
`906`	`906`
`907`	`907`	`// Construct a top level analysis manager for the pipeline.`