[MLIR] Bump commits (#3584)

* Bump MLIR version and minor fixes in nGraph

* advance commit ids

* fix commit id

cmake/external_mlir.cmake

@@ -20,8 +20,8 @@ set(MLIR_LLVM_REPO_URL https://github.com/llvm/llvm-project.git)
 set(MLIR_REPO_URL https://github.com/tensorflow/mlir.git)
 
 # Change these commit IDs to move to latest stable versions
-set(MLIR_LLVM_COMMIT_ID 3b9a27b)
-set(MLIR_COMMIT_ID 0cdb20a)
+set(MLIR_LLVM_COMMIT_ID f707dac742f)
+set(MLIR_COMMIT_ID 40fe0fe7)
 
 # MLIR environment variables. Some of them are used by LIT tool.
 set(MLIR_PROJECT_ROOT ${CMAKE_CURRENT_BINARY_DIR}/mlir_project)

src/contrib/mlir/compiler/compiler.cpp

@@ -340,7 +340,7 @@ MLIRCompiler::TensorInfo MLIRCompiler::get_tensor_value(descriptor::Tensor* tens
 void MLIRCompiler::lower_ng_dialect()
 {
     // Lower NG dialect to Affine
-    mlir::PassManager pm;
+    mlir::PassManager pm(&m_context);
     pm.addPass(mlir::createDialectLoweringPass(this));
     pm.addPass(mlir::createCanonicalizerPass());
 
@@ -431,7 +431,7 @@ void MLIRCompiler::optimize()
     auto targetInfo = target_machine->getTargetTransformInfo(*ttiSetupFunc);
 
     // Populate pass manager with affine dialect optimizations.
-    mlir::PassManager pm;
+    mlir::PassManager pm(&m_context);
     if (clEnableAffineLoopFusion)
     {
         pm.addPass(mlir::createLoopFusionPass());

src/contrib/mlir/compiler/lowerer.cpp

@@ -207,7 +207,7 @@ namespace
 
         // we find out output values by looking at returned values
         // any return should return all outputs of the subgraph
-        f.walk<NGReturnOp>([this, &outputCount](NGReturnOp ret) {
+        f.walk([this, &outputCount](NGReturnOp ret) {
             for (unsigned i = 0; i < ret.getNumOperands(); i++)
             {
                 auto outputValue = ret.getOperand(i);