Fix use of mlir::isa/dyn_cast.

The member methods are deprecated in favour of the free functions.

PiperOrigin-RevId: 748588024

Author: chsigg

transforms/materialize_buffers.cc

@@ -427,7 +427,7 @@ class MaterializeBuffers
                                  "when materializing buffers";
       }
       for (mlir::Value result : op->getResults()) {
-        if (!result.getType().isa<ValueType>()) continue;
+        if (!isa<ValueType>(result.getType())) continue;
         const ValueStorage &storage =
             storage_analysis.GetStorage(ResultInstance::Unique(result));
         if (storage.space() == nullptr) {

transforms/normalize_loops.cc

@@ -16,6 +16,7 @@
 #include "mlir/Dialect/Affine/IR/AffineOps.h"
 #include "mlir/Dialect/SCF/IR/SCF.h"
 #include "mlir/Pass/Pass.h"
+#include "mlir/Support/LLVM.h"
 #include "loop_nest.h"
 #include "sair_dialect.h"
 #include "sair_op_interfaces.h"
@@ -283,7 +284,7 @@ void NormalizeLoops(SairOp op, const IterationSpace &iteration_space,
          llvm::zip(op->getResults(), new_op->getResults())) {
       // We do not normalize range operations, so we know that results are
       // values.
-      assert(old_value.getType().isa<ValueType>());
+      assert(isa<ValueType>(old_value.getType()));
       UpdateValueUses(old_value,
                       {new_value, mapping.Resize(new_op.results_rank())});
     }