[Mlir-commits] [flang] [mlir] [mlir] Do not merge blocks during canonicalization by default (PR #95057)

[Giuseppe Rossini]

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@@ -45,7 +55,8 @@ class GreedyRewriteConfig {
   /// patterns.
   ///
   /// Note: Only applicable when simplifying entire regions.
-  bool enableRegionSimplification = true;
+  GreedySimplifyRegionLevel enableRegionSimplification =
+      GreedySimplifyRegionLevel::Aggressive;
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giuseros wrote:

Sorry, I didn't spot this, but I think this should be set as `Normal`. Having `Aggressive` by default will make the compiler hang for large merges. 

https://github.com/llvm/llvm-project/pull/95057