[CIR][Lowering][MLIR] Export cir::lowerArrayType()

Export cir::lowerArrayType() so a CIR client can use this function to lower some
!cir.array.

Author: keryell

clang/include/clang/CIR/LowerToMLIR.h

@@ -12,13 +12,17 @@
 #ifndef CLANG_CIR_LOWERTOMLIR_H
 #define CLANG_CIR_LOWERTOMLIR_H
 
+#include "clang/CIR/Dialect/IR/CIRTypes.h"
+#include "mlir/Interfaces/DataLayoutInterfaces.h"
 #include "mlir/Transforms/DialectConversion.h"
 #include <functional>
 
 namespace cir {
 
 void populateCIRLoopToSCFConversionPatterns(mlir::RewritePatternSet &patterns,
                                             mlir::TypeConverter &converter);
+mlir::Type lowerArrayType(cir::ArrayType type, bool hasValueSemantics,
+                          mlir::TypeConverter &converter);
 mlir::TypeConverter prepareTypeConverter(mlir::DataLayout &dataLayout);
 void runAtStartOfConvertCIRToMLIRPass(
     std::function<void(mlir::ConversionTarget)>);

clang/lib/CIR/Lowering/ThroughMLIR/LowerCIRToMLIR.cpp

@@ -1408,7 +1408,7 @@ class CIRPtrStrideOpLowering
                   mlir::ConversionPatternRewriter &rewriter) const override {
     if (!isCastArrayToPtrConsumer(op))
       return mlir::failure();
-    if (!isLoadStoreOrCastArrayToPtrProduer(op))
+    if (!isLoadStoreOrCastArrayToPtrProducer(op))
       return mlir::failure();
     auto baseOp = adaptor.getBase().getDefiningOp();
     if (!baseOp)
@@ -1456,7 +1456,6 @@ void populateCIRToMLIRConversionPatterns(mlir::RewritePatternSet &patterns,
                                        cirDataLayout);
 }
 
-namespace {
 // Lower a cir.array either as a memref when it has a reference semantics or as
 // a tensor when it has a value semantics (like inside a struct or union)
 mlir::Type lowerArrayType(cir::ArrayType type, bool hasValueSemantics,
@@ -1477,7 +1476,6 @@ mlir::Type lowerArrayType(cir::ArrayType type, bool hasValueSemantics,
     return mlir::RankedTensorType::get(shape, elementType);
   return mlir::MemRefType::get(shape, elementType);
 }
-} // namespace
 
 mlir::TypeConverter prepareTypeConverter(mlir::DataLayout &dataLayout) {
   mlir::TypeConverter converter;