[mlir] Migrate away from PointerUnion::dyn_cast (NFC)

[kazutakahirata]

Note that PointerUnion::dyn_cast has been soft deprecated in
PointerUnion.h:

// FIXME: Replace the uses of is(), get() and dyn_cast() with
// isa, cast and the llvm::dyn_cast

Literal migration would result in dyn_cast_if_present (see the
definition of PointerUnion::dyn_cast), but this patch uses dyn_cast
because we have a call to dyn_cast earlier in the function, implying
that attrOrProp is nonnull.

[llvmbot]

@llvm/pr-subscribers-mlir

@llvm/pr-subscribers-mlir-core

Author: Kazu Hirata (kazutakahirata)

Changes

Note that PointerUnion::dyn_cast has been soft deprecated in
PointerUnion.h:

// FIXME: Replace the uses of is(), get() and dyn_cast() with
// isa<T>, cast<T> and the llvm::dyn_cast<T>

Literal migration would result in dyn_cast_if_present (see the
definition of PointerUnion::dyn_cast), but this patch uses dyn_cast
because we have a call to dyn_cast earlier in the function, implying
that attrOrProp is nonnull.

---

Full diff: https://github.com/llvm/llvm-project/pull/135770.diff

1 Files Affected:

• (modified) mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp (+1-1)

diff --git a/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp b/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
index 2431807ce463d..edcb2f507ae50 100644
--- a/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
+++ b/mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp
@@ -1828,7 +1828,7 @@ void OpEmitter::genPropertiesSupportForBytecode(
           name, tgfmt(namedProperty->prop.getWriteToMlirBytecodeCall(), &fctx));
       continue;
     }
-    const auto *namedAttr = attrOrProp.dyn_cast<const AttributeMetadata *>();
+    const auto *namedAttr = dyn_cast<const AttributeMetadata *>(attrOrProp);
     StringRef name = namedAttr->attrName;
     if (namedAttr->isRequired) {
       readPropertiesMethod << formatv(R"(