[Mlir-commits] [mlir] [mlir][Pass] Add new FileTreeIRPrinterConfig (PR #67840)

[Christopher Bate]

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@@ -381,6 +381,42 @@ class PassManager : public OpPassManager {
       bool printAfterOnlyOnFailure = false, raw_ostream &out = llvm::errs(),
       OpPrintingFlags opPrintingFlags = OpPrintingFlags());
 
+  /// Similar to `enableIRPrinting` above, except that instead of printing
+  /// the IR to a single output stream, the instrumentation will print the
+  /// output of each pass to a separate file. The files will be organized into a
+  /// directory tree rooted at `printTreeDir`. The directories mirror the
+  /// nesting structure of the IR. For example, if the IR is congruent to the
+  /// pass-pipeline "builtin.module(pass1,pass2,func.func(pass3,pass4)))", and
+  /// `printTreeDir=/tmp/pipeline_output`, then then the tree file tree created
+  /// will look like:
+  ///
+  /// ```
+  /// /tmp/pass_output
+  /// ├── builtin_module_the_symbol_name
+  /// │   ├── 0_pass1.mlir
+  /// │   ├── 1_pass2.mlir
+  /// │   ├── func_func_my_func_name
+  /// │   │   ├── 2_pass3.mlir
+  /// │   │   ├── 3_pass4.mlir
+  /// │   ├── func_func_my_other_func_name
+  /// │   │   ├── 4_pass3.mlir
+  /// │   │   ├── 5_pass4.mlir
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christopherbate wrote:

Wouldn't the below two pipelines both produce the same file tree (and same file names) using your suggested naming?

1. `builtin.module(cse,cse,func.func(cse))`
2. `builtin.module(cse,func.func(cse),cse)`



https://github.com/llvm/llvm-project/pull/67840