[MLIR][LLVM] Make index type bitwidth configurable.

[herhut]

Summary

This change adds a new option to the StandardToLLVM lowering to configure
the bitwidth of the index type independently of the target architecture's
pointer size.

[ftynse]

Have you considered using LLVMTypeConverterCustomization for this? If you had and decided otherwise, I'm okay to land this after the comments are addressed.

IMO, it should be now possible to drop the the customization and use the new dispatch features available in TypeConverter.

mlir/include/mlir/Conversion/StandardToLLVM/ConvertStandardToLLVMPass.h

67

Nit: use the named constant instead

mlir/lib/Conversion/GPUCommon/IndexIntrinsicsOpLowering.h

36–37

Can we just have an accessor in the type converter that returns the bitwidth without having to construct the type?

36–37

Nit: while you are there, let's use camelBack for variable names.

mlir/lib/Conversion/StandardToLLVM/ConvertStandardToLLVM.cpp

136 ↗

(On Diff #251034)

Nit: drop trivial braces

139 ↗

(On Diff #251034)

leftover debug stmt

3084 ↗

(On Diff #251034)

Consider including the value that leads to the machine word size being used, otherwise it may confuse people to have bitwidth=0.

[herhut]

Comments...

[herhut]

I did not go with the customization as it was not clear to me how those would compose. One should still be able to select different lowerings for signatures and the index type.

I did not understand your comment about new dispatch features. Can you explain?

[mehdi_amini]

mlir/include/mlir/Conversion/StandardToLLVM/ConvertStandardToLLVM.h

51

Can this be just a field (or a new callback) in this structure instead?

[herhut]

Moving flag into LLVMTypeConverterCustomization.

[herhut]

Formatting

[herhut]

@ftynse Could you take another look and approve?

[herhut]

Rebase

[herhut]

Properly rebase...

[ftynse]

mlir/include/mlir/Conversion/StandardToLLVM/ConvertStandardToLLVM.h

199

customizations already has it, let's just have getIndexType() access customizations instead and drop the duplicate field. We store the copy of what is passed in the constructor, so we can freely update it with the value derived from the module if necessary.

[herhut]

Comments.

[herhut]

Rebase again.

[herhut]

Minor cleanup.

mlir/include/mlir/Conversion/StandardToLLVM/ConvertStandardToLLVM.h

 /// Set of callbacks that allows the customization of LLVMTypeConverter.
 struct LLVMTypeConverterCustomization {
   using CustomCallback = std::function<LogicalResult(LLVMTypeConverter &, Type,
                                                      SmallVectorImpl<Type> &)>;
 
   /// Customize the type conversion of function arguments.
   CustomCallback funcArgConverter;
 
+  /// Used to determine the bitwidth of the LLVM integer type that the index
+  /// type gets lowered to. Defaults to deriving the size from the data layout.
+  unsigned indexBitwidth;
+
   /// Initialize customization to default callbacks.
   LLVMTypeConverterCustomization();
 };
 
 /// Callback to convert function argument types. It converts a MemRef function
 /// argument to a list of non-aggregate types containing descriptor
 /// information, and an UnrankedmemRef function argument to a list containing
 /// the rank and a pointer to a descriptor struct.
 LogicalResult structFuncArgTypeConverter(LLVMTypeConverter &converter,
                                          Type type,
                                          SmallVectorImpl<Type> &result);
public:
   /// pointers to memref descriptors for arguments.
   LLVM::LLVMType convertFunctionTypeCWrapper(FunctionType type);
 
   /// Creates descriptor structs from individual values constituting them.
   Operation *materializeConversion(PatternRewriter &rewriter, Type type,
                                    ArrayRef<Value> values,
                                    Location loc) override;
 
+  /// Gets the LLVM representation of the index type. The returned type is an
+  /// integer type with the size confgured for this type converter.
+  LLVM::LLVMType getIndexType();
+
+  /// Gets the bitwidth of the index type when converted to LLVM.
+  unsigned getIndexTypeBitwidth() { return customizations.indexBitwidth; }
+
 protected:
   /// LLVM IR module used to parse/create types.
   llvm::Module *module;
   LLVM::LLVMDialect *llvmDialect;
 
 private:
   // Convert a function type.  The arguments and results are converted one by
   // one.  Additionally, if the function returns more than one value, pack the
private:
 
   // Convert an unranked memref type to an LLVM type that captures the
   // runtime rank and a pointer to the static ranked memref desc
   Type convertUnrankedMemRefType(UnrankedMemRefType type);
 
   // Convert a 1D vector type into an LLVM vector type.
   Type convertVectorType(VectorType type);
 
-  // Get the LLVM representation of the index type based on the bitwidth of the
-  // pointer as defined by the data layout of the module.
-  LLVM::LLVMType getIndexType();
-
   /// Callbacks for customizing the type conversion.
   LLVMTypeConverterCustomization customizations;
 };
 
 /// Helper class to produce LLVM dialect operations extracting or inserting
 /// values to a struct.
 class StructBuilder {
 public:
   /// Construct a helper for the given value.
   explicit StructBuilder(Value v);
   /// Builds IR creating an `undef` value of the descriptor type.
   static StructBuilder undef(OpBuilder &builder, Location loc,
                              Type descriptorType);
public:
 
   /// Returns the LLVM IR context.
   llvm::LLVMContext &getContext() const;
 
   /// Returns the LLVM IR module associated with the LLVM dialect.
   llvm::Module &getModule() const;
 
   /// Gets the MLIR type wrapping the LLVM integer type whose bit width is
-  /// defined by the pointer size used in the LLVM module.
+  /// defined by the used type converter.
   LLVM::LLVMType getIndexType() const;
 
   /// Gets the MLIR type wrapping the LLVM void type.
   LLVM::LLVMType getVoidType() const;
 
   /// Get the MLIR type wrapping the LLVM i8* type.
   LLVM::LLVMType getVoidPtrType() const;
 

mlir/include/mlir/Conversion/StandardToLLVM/ConvertStandardToLLVMPass.h

 /// Collect a set of patterns to convert from the Standard dialect to
 /// LLVM using the bare pointer calling convention for MemRef function
 /// arguments. If `useAlloca` is set, the patterns for AllocOp and DeallocOp
 /// will generate `llvm.alloca` instead of calls to "malloc".
 void populateStdToLLVMBarePtrConversionPatterns(
     LLVMTypeConverter &converter, OwningRewritePatternList &patterns,
     bool useAlloca = false);
 
+/// Value to pass as bitwidth for the index type when the converter is expected
+/// to derive the bitwith from the LLVM data layout.
+static constexpr unsigned kDeriveIndexBitwidthFromDataLayout = 0;
+
 /// Creates a pass to convert the Standard dialect into the LLVMIR dialect.
 /// By default stdlib malloc/free are used for allocating MemRef payloads.
 /// Specifying `useAlloca-true` emits stack allocations instead. In the future
 /// this may become an enum when we have concrete uses for other options.
-std::unique_ptr<OpPassBase<ModuleOp>>
-createLowerToLLVMPass(bool useAlloca = false, bool useBarePtrCallConv = false,
-                      bool emitCWrappers = false);
+std::unique_ptr<OpPassBase<ModuleOp>> createLowerToLLVMPass(
+    bool useAlloca = false, bool useBarePtrCallConv = false,
+    bool emitCWrappers = false,
+    unsigned indexBitwidth = kDeriveIndexBitwidthFromDataLayout);
 
 } // namespace mlir
 
 #endif // MLIR_CONVERSION_STANDARDTOLLVM_CONVERTSTANDARDTOLLVMPASS_H_

mlir/lib/Conversion/GPUCommon/IndexIntrinsicsOpLowering.h

private:
 
   static dimension dimensionToIndex(Op op) {
     return llvm::StringSwitch<dimension>(op.dimension())
         .Case("x", X)
         .Case("y", Y)
         .Case("z", Z)
         .Default(invalid);
   }
 
-  static unsigned getIndexBitWidth(LLVMTypeConverter &type_converter) {
-    auto dialect = type_converter.getDialect();
-    return dialect->getLLVMModule().getDataLayout().getPointerSizeInBits();
-  }
-
 public:
-  explicit GPUIndexIntrinsicOpLowering(LLVMTypeConverter &lowering_)
+  explicit GPUIndexIntrinsicOpLowering(LLVMTypeConverter &typeConverter)
       : ConvertToLLVMPattern(Op::getOperationName(),
-                             lowering_.getDialect()->getContext(), lowering_),
-        indexBitwidth(getIndexBitWidth(lowering_)) {}
+                             typeConverter.getDialect()->getContext(),
+                             typeConverter),
+        indexBitwidth(typeConverter.getIndexTypeBitwidth()) {}
 
   // Convert the kernel arguments to an LLVM type, preserve the rest.
   LogicalResult
   matchAndRewrite(Operation *op, ArrayRef<Value> operands,
                   ConversionPatternRewriter &rewriter) const override {
     auto loc = op->getLoc();
     auto dialect = typeConverter.getDialect();
     Value newOp;

mlir/lib/Conversion/StandardToLLVM/StandardToLLVM.cpp

static LLVM::LLVMType unwrap(Type type) {
   auto wrappedLLVMType = type.dyn_cast<LLVM::LLVMType>();
   if (!wrappedLLVMType)
     emitError(UnknownLoc::get(mlirContext),
               "conversion resulted in a non-LLVM type");
   return wrappedLLVMType;
 }
 
 /// Initialize customization to default callbacks.
-LLVMTypeConverterCustomization::LLVMTypeConverterCustomization() {
-  funcArgConverter = structFuncArgTypeConverter;
-}
+LLVMTypeConverterCustomization::LLVMTypeConverterCustomization()
+    : funcArgConverter(structFuncArgTypeConverter),
+      indexBitwidth(kDeriveIndexBitwidthFromDataLayout) {}
 
 /// Callback to convert function argument types. It converts a MemRef function
 /// argument to a list of non-aggregate types containing descriptor
 /// information, and an UnrankedmemRef function argument to a list containing
 /// the rank and a pointer to a descriptor struct.
 LogicalResult mlir::structFuncArgTypeConverter(LLVMTypeConverter &converter,
                                                Type type,
                                                SmallVectorImpl<Type> &result) {

 
 /// Create an LLVMTypeConverter using 'custom' customizations.
 LLVMTypeConverter::LLVMTypeConverter(
     MLIRContext *ctx, const LLVMTypeConverterCustomization &customs)
     : llvmDialect(ctx->getRegisteredDialect<LLVM::LLVMDialect>()),
       customizations(customs) {
   assert(llvmDialect && "LLVM IR dialect is not registered");
   module = &llvmDialect->getLLVMModule();
+  if (customizations.indexBitwidth == kDeriveIndexBitwidthFromDataLayout)
+    customizations.indexBitwidth =
+        module->getDataLayout().getPointerSizeInBits();
 
   // Register conversions for the standard types.
   addConversion([&](FloatType type) { return convertFloatType(type); });
   addConversion([&](FunctionType type) { return convertFunctionType(type); });
   addConversion([&](IndexType type) { return convertIndexType(type); });
   addConversion([&](IntegerType type) { return convertIntegerType(type); });
   addConversion([&](MemRefType type) { return convertMemRefType(type); });
   addConversion(

 }
 
 /// Get the LLVM context.
 llvm::LLVMContext &LLVMTypeConverter::getLLVMContext() {
   return module->getContext();
 }
 
 LLVM::LLVMType LLVMTypeConverter::getIndexType() {
-  return LLVM::LLVMType::getIntNTy(
-      llvmDialect, module->getDataLayout().getPointerSizeInBits());
+  return LLVM::LLVMType::getIntNTy(llvmDialect, getIndexTypeBitwidth());
 }
 
 Type LLVMTypeConverter::convertIndexType(IndexType type) {
   return getIndexType();
 }
 
 Type LLVMTypeConverter::convertIntegerType(IntegerType type) {
   return LLVM::LLVMType::getIntNTy(llvmDialect, type.getWidth());
llvm::LLVMContext &ConvertToLLVMPattern::getContext() const {
   return typeConverter.getLLVMContext();
 }
 
 llvm::Module &ConvertToLLVMPattern::getModule() const {
   return getDialect().getLLVMModule();
 }
 
 LLVM::LLVMType ConvertToLLVMPattern::getIndexType() const {
-  return LLVM::LLVMType::getIntNTy(
-      &getDialect(), getModule().getDataLayout().getPointerSizeInBits());
+  return typeConverter.getIndexType();
 }
 
 LLVM::LLVMType ConvertToLLVMPattern::getVoidType() const {
   return LLVM::LLVMType::getVoidTy(&getDialect());
 }
 
 LLVM::LLVMType ConvertToLLVMPattern::getVoidPtrType() const {
   return LLVM::LLVMType::getInt8PtrTy(&getDialect());
LLVMTypeConverter::promoteMemRefDescriptors(Location loc, ValueRange opOperands,
   }
   return promotedOperands;
 }
 
 namespace {
 /// A pass converting MLIR operations into the LLVM IR dialect.
 struct LLVMLoweringPass : public ModulePass<LLVMLoweringPass> {
   /// Creates an LLVM lowering pass.
-  explicit LLVMLoweringPass(bool useAlloca, bool useBarePtrCallConv,
-                            bool emitCWrappers) {
+  LLVMLoweringPass(bool useAlloca, bool useBarePtrCallConv, bool emitCWrappers,
+                   unsigned indexBitwidth) {
     this->useAlloca = useAlloca;
     this->useBarePtrCallConv = useBarePtrCallConv;
     this->emitCWrappers = emitCWrappers;
+    this->indexBitwidth = indexBitwidth;
   }
   explicit LLVMLoweringPass() {}
   LLVMLoweringPass(const LLVMLoweringPass &pass) {}
 
   /// Run the dialect converter on the module.
   void runOnModule() override {
     if (useBarePtrCallConv && emitCWrappers) {
       getModule().emitError()
           << "incompatible conversion options: bare-pointer calling convention "
              "and C wrapper emission";
       signalPassFailure();
       return;
     }
 
     ModuleOp m = getModule();
 
     LLVMTypeConverterCustomization customs;
     customs.funcArgConverter = useBarePtrCallConv ? barePtrFuncArgTypeConverter
                                                   : structFuncArgTypeConverter;
+    customs.indexBitwidth = indexBitwidth;
     LLVMTypeConverter typeConverter(&getContext(), customs);
 
     OwningRewritePatternList patterns;
     if (useBarePtrCallConv)
       populateStdToLLVMBarePtrConversionPatterns(typeConverter, patterns,
                                                  useAlloca);
     else
       populateStdToLLVMConversionPatterns(typeConverter, patterns, useAlloca,
Option<bool> useBarePtrCallConv{
                      "bare pointers to the MemRef element types"),
       llvm::cl::init(false)};
 
   /// Emit wrappers for C-compatible pointer-to-struct memref descriptors.
   Option<bool> emitCWrappers{
       *this, "emit-c-wrappers",
       llvm::cl::desc("Emit C-compatible wrapper functions"),
       llvm::cl::init(false)};
+
+  /// Configure the bitwidth of the index type when lowered to LLVM.
+  Option<unsigned> indexBitwidth{
+      *this, "index-bitwidth",
+      llvm::cl::desc(
+          "Bitwidth of the index type, 0 to use size of machine word"),
+      llvm::cl::init(kDeriveIndexBitwidthFromDataLayout)};
 };
 } // end namespace
 
 mlir::LLVMConversionTarget::LLVMConversionTarget(MLIRContext &ctx)
     : ConversionTarget(ctx) {
   this->addLegalDialect<LLVM::LLVMDialect>();
   this->addIllegalOp<LLVM::DialectCastOp>();
   this->addIllegalOp<TanhOp>();
 }
 
 std::unique_ptr<OpPassBase<ModuleOp>>
 mlir::createLowerToLLVMPass(bool useAlloca, bool useBarePtrCallConv,
-                            bool emitCWrappers) {
+                            bool emitCWrappers, unsigned indexBitwidth) {
   return std::make_unique<LLVMLoweringPass>(useAlloca, useBarePtrCallConv,
-                                            emitCWrappers);
+                                            emitCWrappers, indexBitwidth);
 }
 
 static PassRegistration<LLVMLoweringPass>
     pass(PASS_NAME, "Convert scalar and vector operations from the "
                     "Standard to the LLVM dialect");

mlir/lib/Target/LLVMIR/ModuleTranslation.cpp

llvm::Constant *ModuleTranslation::getLLVMConstant(llvm::Type *llvmType,
                                                    Attribute attr,
                                                    Location loc) {
   if (!attr)
     return llvm::UndefValue::get(llvmType);
   if (llvmType->isStructTy()) {
     emitError(loc, "struct types are not supported in constants");
     return nullptr;
   }
+  // For integer types, we allow a mismatch in sizes as the index type in
+  // MLIR might have a different size than the index type in the LLVM module.
   if (auto intAttr = attr.dyn_cast<IntegerAttr>())
-    return llvm::ConstantInt::get(llvmType, intAttr.getValue());
+    return llvm::ConstantInt::get(
+        llvmType,
+        intAttr.getValue().sextOrTrunc(llvmType->getIntegerBitWidth()));
   if (auto boolAttr = attr.dyn_cast<BoolAttr>())
     return llvm::ConstantInt::get(llvmType, boolAttr.getValue());
   if (auto floatAttr = attr.dyn_cast<FloatAttr>())
     return llvm::ConstantFP::get(llvmType, floatAttr.getValue());
   if (auto funcAttr = attr.dyn_cast<FlatSymbolRefAttr>())
     return llvm::ConstantExpr::getBitCast(
         functionMapping.lookup(funcAttr.getValue()), llvmType);
   if (auto splatAttr = attr.dyn_cast<SplatElementsAttr>()) {
     auto *sequentialType = cast<llvm::SequentialType>(llvmType);
-    auto elementType = sequentialType->getElementType();
+    auto *elementType = sequentialType->getElementType();
     uint64_t numElements = sequentialType->getNumElements();
     // Splat value is a scalar. Extract it only if the element type is not
     // another sequence type. The recursion terminates because each step removes
     // one outer sequential type.
     llvm::Constant *child = getLLVMConstant(
         elementType,
         isa<llvm::SequentialType>(elementType) ? splatAttr
                                                : splatAttr.getSplatValue(),
         loc);
     if (!child)
       return nullptr;
     if (llvmType->isVectorTy())
       return llvm::ConstantVector::getSplat(
           llvm::ElementCount(numElements, /*Scalable=*/false), child);
     if (llvmType->isArrayTy()) {
-      auto arrayType = llvm::ArrayType::get(elementType, numElements);
+      auto *arrayType = llvm::ArrayType::get(elementType, numElements);
       SmallVector<llvm::Constant *, 8> constants(numElements, child);
       return llvm::ConstantArray::get(arrayType, constants);
     }
   }
 
   if (auto elementsAttr = attr.dyn_cast<ElementsAttr>()) {
     assert(elementsAttr.getType().hasStaticShape());
     assert(elementsAttr.getNumElements() != 0 &&

mlir/test/Conversion/StandardToLLVM/convert-to-llvmir.mlir

 // RUN: mlir-opt -convert-std-to-llvm %s -split-input-file | FileCheck %s
+// RUN: mlir-opt -convert-std-to-llvm='index-bitwidth=32' %s -split-input-file | FileCheck --check-prefix=CHECK32 %s
 
 // CHECK-LABEL: func @empty() {
 // CHECK-NEXT:  llvm.return
 // CHECK-NEXT: }
 func @empty() {
 ^bb0:
   return
 }
 
 // CHECK-LABEL: func @body(!llvm.i64)
 func @body(index)
 
 // CHECK-LABEL: func @simple_loop() {
+// CHECK32-LABEL: func @simple_loop() {
 func @simple_loop() {
 ^bb0:
 // CHECK-NEXT:  llvm.br ^bb1
+// CHECK32-NEXT:  llvm.br ^bb1
   br ^bb1
 
 // CHECK-NEXT: ^bb1:  // pred: ^bb0
 // CHECK-NEXT:  {{.*}} = llvm.mlir.constant(1 : index) : !llvm.i64
 // CHECK-NEXT:  {{.*}} = llvm.mlir.constant(42 : index) : !llvm.i64
 // CHECK-NEXT:  llvm.br ^bb2({{.*}} : !llvm.i64)
+// CHECK32-NEXT: ^bb1:  // pred: ^bb0
+// CHECK32-NEXT:  {{.*}} = llvm.mlir.constant(1 : index) : !llvm.i32
+// CHECK32-NEXT:  {{.*}} = llvm.mlir.constant(42 : index) : !llvm.i32
+// CHECK32-NEXT:  llvm.br ^bb2({{.*}} : !llvm.i32)
 ^bb1: // pred: ^bb0
   %c1 = constant 1 : index
   %c42 = constant 42 : index
   br ^bb2(%c1 : index)
 
 // CHECK:      ^bb2({{.*}}: !llvm.i64): // 2 preds: ^bb1, ^bb3
 // CHECK-NEXT:  {{.*}} = llvm.icmp "slt" {{.*}}, {{.*}} : !llvm.i64
 // CHECK-NEXT:  llvm.cond_br {{.*}}, ^bb3, ^bb4
+// CHECK32:      ^bb2({{.*}}: !llvm.i32): // 2 preds: ^bb1, ^bb3
+// CHECK32-NEXT:  {{.*}} = llvm.icmp "slt" {{.*}}, {{.*}} : !llvm.i32
+// CHECK32-NEXT:  llvm.cond_br {{.*}}, ^bb3, ^bb4
 ^bb2(%0: index):  // 2 preds: ^bb1, ^bb3
   %1 = cmpi "slt", %0, %c42 : index
   cond_br %1, ^bb3, ^bb4
 
 // CHECK:      ^bb3:  // pred: ^bb2
 // CHECK-NEXT:  llvm.call @body({{.*}}) : (!llvm.i64) -> ()
 // CHECK-NEXT:  {{.*}} = llvm.mlir.constant(1 : index) : !llvm.i64
 // CHECK-NEXT:  {{.*}} = llvm.add {{.*}}, {{.*}} : !llvm.i64
 // CHECK-NEXT:  llvm.br ^bb2({{.*}} : !llvm.i64)
+// CHECK32:      ^bb3:  // pred: ^bb2
+// CHECK32-NEXT:  llvm.call @body({{.*}}) : (!llvm.i32) -> ()
+// CHECK32-NEXT:  {{.*}} = llvm.mlir.constant(1 : index) : !llvm.i32
+// CHECK32-NEXT:  {{.*}} = llvm.add {{.*}}, {{.*}} : !llvm.i32
+// CHECK32-NEXT:  llvm.br ^bb2({{.*}} : !llvm.i32)
 ^bb3: // pred: ^bb2
   call @body(%0) : (index) -> ()
   %c1_0 = constant 1 : index
   %2 = addi %0, %c1_0 : index
   br ^bb2(%2 : index)
 
 // CHECK:      ^bb4:  // pred: ^bb2
 // CHECK-NEXT:  llvm.return

 func @ml_caller() {
 ^bb0:
   call @simple_loop() : () -> ()
   call @more_imperfectly_nested_loops() : () -> ()
   return
 }
 
 // CHECK-LABEL: func @body_args(!llvm.i64) -> !llvm.i64
+// CHECK32-LABEL: func @body_args(!llvm.i32) -> !llvm.i32
 func @body_args(index) -> index
 // CHECK-LABEL: func @other(!llvm.i64, !llvm.i32) -> !llvm.i32
+// CHECK32-LABEL: func @other(!llvm.i32, !llvm.i32) -> !llvm.i32
 func @other(index, i32) -> i32
 
 // CHECK-LABEL: func @func_args(%arg0: !llvm.i32, %arg1: !llvm.i32) -> !llvm.i32 {
 // CHECK-NEXT:  {{.*}} = llvm.mlir.constant(0 : i32) : !llvm.i32
 // CHECK-NEXT:  llvm.br ^bb1
+// CHECK32-LABEL: func @func_args(%arg0: !llvm.i32, %arg1: !llvm.i32) -> !llvm.i32 {
+// CHECK32-NEXT:  {{.*}} = llvm.mlir.constant(0 : i32) : !llvm.i32
+// CHECK32-NEXT:  llvm.br ^bb1
 func @func_args(i32, i32) -> i32 {
 ^bb0(%arg0: i32, %arg1: i32):
   %c0_i32 = constant 0 : i32
   br ^bb1
 
 // CHECK-NEXT: ^bb1:  // pred: ^bb0
 // CHECK-NEXT:  {{.*}} = llvm.mlir.constant(0 : index) : !llvm.i64
 // CHECK-NEXT:  {{.*}} = llvm.mlir.constant(42 : index) : !llvm.i64
 // CHECK-NEXT:  llvm.br ^bb2({{.*}} : !llvm.i64)
+// CHECK32-NEXT: ^bb1:  // pred: ^bb0
+// CHECK32-NEXT:  {{.*}} = llvm.mlir.constant(0 : index) : !llvm.i32
+// CHECK32-NEXT:  {{.*}} = llvm.mlir.constant(42 : index) : !llvm.i32
+// CHECK32-NEXT:  llvm.br ^bb2({{.*}} : !llvm.i32)
 ^bb1: // pred: ^bb0
   %c0 = constant 0 : index
   %c42 = constant 42 : index
   br ^bb2(%c0 : index)
 
 // CHECK-NEXT: ^bb2({{.*}}: !llvm.i64): // 2 preds: ^bb1, ^bb3
 // CHECK-NEXT:  {{.*}} = llvm.icmp "slt" {{.*}}, {{.*}} : !llvm.i64
 // CHECK-NEXT:  llvm.cond_br {{.*}}, ^bb3, ^bb4
+// CHECK32-NEXT: ^bb2({{.*}}: !llvm.i32): // 2 preds: ^bb1, ^bb3
+// CHECK32-NEXT:  {{.*}} = llvm.icmp "slt" {{.*}}, {{.*}} : !llvm.i32
+// CHECK32-NEXT:  llvm.cond_br {{.*}}, ^bb3, ^bb4
 ^bb2(%0: index):  // 2 preds: ^bb1, ^bb3
   %1 = cmpi "slt", %0, %c42 : index
   cond_br %1, ^bb3, ^bb4
 
 // CHECK-NEXT: ^bb3:  // pred: ^bb2
 // CHECK-NEXT:  {{.*}} = llvm.call @body_args({{.*}}) : (!llvm.i64) -> !llvm.i64
 // CHECK-NEXT:  {{.*}} = llvm.call @other({{.*}}, %arg0) : (!llvm.i64, !llvm.i32) -> !llvm.i32
 // CHECK-NEXT:  {{.*}} = llvm.call @other({{.*}}, {{.*}}) : (!llvm.i64, !llvm.i32) -> !llvm.i32
 // CHECK-NEXT:  {{.*}} = llvm.call @other({{.*}}, %arg1) : (!llvm.i64, !llvm.i32) -> !llvm.i32
 // CHECK-NEXT:  {{.*}} = llvm.mlir.constant(1 : index) : !llvm.i64
 // CHECK-NEXT:  {{.*}} = llvm.add {{.*}}, {{.*}} : !llvm.i64
 // CHECK-NEXT:  llvm.br ^bb2({{.*}} : !llvm.i64)
+// CHECK32-NEXT: ^bb3:  // pred: ^bb2
+// CHECK32-NEXT:  {{.*}} = llvm.call @body_args({{.*}}) : (!llvm.i32) -> !llvm.i32
+// CHECK32-NEXT:  {{.*}} = llvm.call @other({{.*}}, %arg0) : (!llvm.i32, !llvm.i32) -> !llvm.i32
+// CHECK32-NEXT:  {{.*}} = llvm.call @other({{.*}}, {{.*}}) : (!llvm.i32, !llvm.i32) -> !llvm.i32
+// CHECK32-NEXT:  {{.*}} = llvm.call @other({{.*}}, %arg1) : (!llvm.i32, !llvm.i32) -> !llvm.i32
+// CHECK32-NEXT:  {{.*}} = llvm.mlir.constant(1 : index) : !llvm.i32
+// CHECK32-NEXT:  {{.*}} = llvm.add {{.*}}, {{.*}} : !llvm.i32
+// CHECK32-NEXT:  llvm.br ^bb2({{.*}} : !llvm.i32)
 ^bb3: // pred: ^bb2
   %2 = call @body_args(%0) : (index) -> index
   %3 = call @other(%2, %arg0) : (index, i32) -> i32
   %4 = call @other(%2, %3) : (index, i32) -> i32
   %5 = call @other(%2, %arg1) : (index, i32) -> i32
   %c1 = constant 1 : index
   %6 = addi %0, %c1 : index
   br ^bb2(%6 : index)
 
 // CHECK-NEXT: ^bb4:  // pred: ^bb2
 // CHECK-NEXT:  {{.*}} = llvm.mlir.constant(0 : index) : !llvm.i64
 // CHECK-NEXT:  {{.*}} = llvm.call @other({{.*}}, {{.*}}) : (!llvm.i64, !llvm.i32) -> !llvm.i32
 // CHECK-NEXT:  llvm.return {{.*}} : !llvm.i32
+// CHECK32-NEXT: ^bb4:  // pred: ^bb2
+// CHECK32-NEXT:  {{.*}} = llvm.mlir.constant(0 : index) : !llvm.i32
+// CHECK32-NEXT:  {{.*}} = llvm.call @other({{.*}}, {{.*}}) : (!llvm.i32, !llvm.i32) -> !llvm.i32
+// CHECK32-NEXT:  llvm.return {{.*}} : !llvm.i32
 ^bb4: // pred: ^bb2
   %c0_0 = constant 0 : index
   %7 = call @other(%c0_0, %c0_i32) : (index, i32) -> i32
   return %7 : i32
 }
 
 // CHECK-LABEL: func @pre(!llvm.i64)
+// CHECK32-LABEL: func @pre(!llvm.i32)
 func @pre(index)
 
 // CHECK-LABEL: func @body2(!llvm.i64, !llvm.i64)
+// CHECK32-LABEL: func @body2(!llvm.i32, !llvm.i32)
 func @body2(index, index)
 
 // CHECK-LABEL: func @post(!llvm.i64)
+// CHECK32-LABEL: func @post(!llvm.i32)
 func @post(index)
 
 // CHECK-LABEL: func @imperfectly_nested_loops() {
 // CHECK-NEXT:  llvm.br ^bb1
 func @imperfectly_nested_loops() {
 ^bb0:
   br ^bb1
 
^bb12:  // pred: ^bb2
   return
 }
 
 // CHECK-LABEL: func @get_i64() -> !llvm.i64
 func @get_i64() -> (i64)
 // CHECK-LABEL: func @get_f32() -> !llvm.float
 func @get_f32() -> (f32)
 // CHECK-LABEL: func @get_memref() -> !llvm<"{ float*, float*, i64, [4 x i64], [4 x i64] }">
+// CHECK32-LABEL: func @get_memref() -> !llvm<"{ float*, float*, i32, [4 x i32], [4 x i32] }">
 func @get_memref() -> (memref<42x?x10x?xf32>)
 
 // CHECK-LABEL: func @multireturn() -> !llvm<"{ i64, float, { float*, float*, i64, [4 x i64], [4 x i64] } }"> {
+// CHECK32-LABEL: func @multireturn() -> !llvm<"{ i64, float, { float*, float*, i32, [4 x i32], [4 x i32] } }"> {
 func @multireturn() -> (i64, f32, memref<42x?x10x?xf32>) {
 ^bb0:
 // CHECK-NEXT:  {{.*}} = llvm.call @get_i64() : () -> !llvm.i64
 // CHECK-NEXT:  {{.*}} = llvm.call @get_f32() : () -> !llvm.float
 // CHECK-NEXT:  {{.*}} = llvm.call @get_memref() : () -> !llvm<"{ float*, float*, i64, [4 x i64], [4 x i64] }">
+// CHECK32-NEXT:  {{.*}} = llvm.call @get_i64() : () -> !llvm.i64
+// CHECK32-NEXT:  {{.*}} = llvm.call @get_f32() : () -> !llvm.float
+// CHECK32-NEXT:  {{.*}} = llvm.call @get_memref() : () -> !llvm<"{ float*, float*, i32, [4 x i32], [4 x i32] }">
   %0 = call @get_i64() : () -> (i64)
   %1 = call @get_f32() : () -> (f32)
   %2 = call @get_memref() : () -> (memref<42x?x10x?xf32>)
 // CHECK-NEXT:  {{.*}} = llvm.mlir.undef : !llvm<"{ i64, float, { float*, float*, i64, [4 x i64], [4 x i64] } }">
 // CHECK-NEXT:  {{.*}} = llvm.insertvalue {{.*}}, {{.*}}[0] : !llvm<"{ i64, float, { float*, float*, i64, [4 x i64], [4 x i64] } }">
 // CHECK-NEXT:  {{.*}} = llvm.insertvalue {{.*}}, {{.*}}[1] : !llvm<"{ i64, float, { float*, float*, i64, [4 x i64], [4 x i64] } }">
 // CHECK-NEXT:  {{.*}} = llvm.insertvalue {{.*}}, {{.*}}[2] : !llvm<"{ i64, float, { float*, float*, i64, [4 x i64], [4 x i64] } }">
 // CHECK-NEXT:  llvm.return {{.*}} : !llvm<"{ i64, float, { float*, float*, i64, [4 x i64], [4 x i64] } }">
+// CHECK32-NEXT:  {{.*}} = llvm.mlir.undef : !llvm<"{ i64, float, { float*, float*, i32, [4 x i32], [4 x i32] } }">
+// CHECK32-NEXT:  {{.*}} = llvm.insertvalue {{.*}}, {{.*}}[0] : !llvm<"{ i64, float, { float*, float*, i32, [4 x i32], [4 x i32] } }">
+// CHECK32-NEXT:  {{.*}} = llvm.insertvalue {{.*}}, {{.*}}[1] : !llvm<"{ i64, float, { float*, float*, i32, [4 x i32], [4 x i32] } }">
+// CHECK32-NEXT:  {{.*}} = llvm.insertvalue {{.*}}, {{.*}}[2] : !llvm<"{ i64, float, { float*, float*, i32, [4 x i32], [4 x i32] } }">
+// CHECK32-NEXT:  llvm.return {{.*}} : !llvm<"{ i64, float, { float*, float*, i32, [4 x i32], [4 x i32] } }">
   return %0, %1, %2 : i64, f32, memref<42x?x10x?xf32>
 }
 
 
 // CHECK-LABEL: func @multireturn_caller() {
+// CHECK32-LABEL: func @multireturn_caller() {
 func @multireturn_caller() {
 ^bb0:
 // CHECK-NEXT:  {{.*}} = llvm.call @multireturn() : () -> !llvm<"{ i64, float, { float*, float*, i64, [4 x i64], [4 x i64] } }">
 // CHECK-NEXT:  {{.*}} = llvm.extractvalue {{.*}}[0] : !llvm<"{ i64, float, { float*, float*, i64, [4 x i64], [4 x i64] } }">
 // CHECK-NEXT:  {{.*}} = llvm.extractvalue {{.*}}[1] : !llvm<"{ i64, float, { float*, float*, i64, [4 x i64], [4 x i64] } }">
 // CHECK-NEXT:  {{.*}} = llvm.extractvalue {{.*}}[2] : !llvm<"{ i64, float, { float*, float*, i64, [4 x i64], [4 x i64] } }">
+// CHECK32-NEXT:  {{.*}} = llvm.call @multireturn() : () -> !llvm<"{ i64, float, { float*, float*, i32, [4 x i32], [4 x i32] } }">
+// CHECK32-NEXT:  {{.*}} = llvm.extractvalue {{.*}}[0] : !llvm<"{ i64, float, { float*, float*, i32, [4 x i32], [4 x i32] } }">
+// CHECK32-NEXT:  {{.*}} = llvm.extractvalue {{.*}}[1] : !llvm<"{ i64, float, { float*, float*, i32, [4 x i32], [4 x i32] } }">
+// CHECK32-NEXT:  {{.*}} = llvm.extractvalue {{.*}}[2] : !llvm<"{ i64, float, { float*, float*, i32, [4 x i32], [4 x i32] } }">
   %0:3 = call @multireturn() : () -> (i64, f32, memref<42x?x10x?xf32>)
   %1 = constant 42 : i64
 // CHECK:       {{.*}} = llvm.add {{.*}}, {{.*}} : !llvm.i64
   %2 = addi %0#0, %1 : i64
   %3 = constant 42.0 : f32
 // CHECK:       {{.*}} = llvm.fadd {{.*}}, {{.*}} : !llvm.float
   %4 = addf %0#1, %3 : f32
   %5 = constant 0 : index

 }
 
 // CHECK-LABEL: func @subview(
 // CHECK-COUNT-2: !llvm<"float*">,
 // CHECK-COUNT-5: {{%[a-zA-Z0-9]*}}: !llvm.i64,
 // CHECK:         %[[ARG0:[a-zA-Z0-9]*]]: !llvm.i64,
 // CHECK:         %[[ARG1:[a-zA-Z0-9]*]]: !llvm.i64,
 // CHECK:         %[[ARG2:.*]]: !llvm.i64)
+// CHECK32-LABEL: func @subview(
+// CHECK32-COUNT-2: !llvm<"float*">,
+// CHECK32-COUNT-5: {{%[a-zA-Z0-9]*}}: !llvm.i32,
+// CHECK32:         %[[ARG0:[a-zA-Z0-9]*]]: !llvm.i32,
+// CHECK32:         %[[ARG1:[a-zA-Z0-9]*]]: !llvm.i32,
+// CHECK32:         %[[ARG2:.*]]: !llvm.i32)
 func @subview(%0 : memref<64x4xf32, affine_map<(d0, d1) -> (d0 * 4 + d1)>>, %arg0 : index, %arg1 : index, %arg2 : index) {
   // The last "insertvalue" that populates the memref descriptor from the function arguments.
   // CHECK: %[[MEMREF:.*]] = llvm.insertvalue %{{.*}}, %{{.*}}[4, 1]
+  // CHECK32: %[[MEMREF:.*]] = llvm.insertvalue %{{.*}}, %{{.*}}[4, 1]
 
   // CHECK: %[[DESC:.*]] = llvm.mlir.undef : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC0:.*]] = llvm.insertvalue %{{.*}}, %[[DESC]][0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC1:.*]] = llvm.insertvalue %{{.*}}, %[[DESC0]][1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[STRIDE0:.*]] = llvm.extractvalue %[[MEMREF]][4, 0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[STRIDE1:.*]] = llvm.extractvalue %[[MEMREF]][4, 1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[OFF:.*]] = llvm.extractvalue %[[MEMREF]][2] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[OFFINC:.*]] = llvm.mul %[[ARG0]], %[[STRIDE0]] : !llvm.i64
   // CHECK: %[[OFF1:.*]] = llvm.add %[[OFF]], %[[OFFINC]] : !llvm.i64
   // CHECK: %[[OFFINC1:.*]] = llvm.mul %[[ARG1]], %[[STRIDE1]] : !llvm.i64
   // CHECK: %[[OFF2:.*]] = llvm.add %[[OFF1]], %[[OFFINC1]] : !llvm.i64
   // CHECK: %[[DESC2:.*]] = llvm.insertvalue %[[OFF2]], %[[DESC1]][2] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC3:.*]] = llvm.insertvalue %[[ARG1]], %[[DESC2]][3, 1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESCSTRIDE1:.*]] = llvm.mul %[[ARG1]], %[[STRIDE1]] : !llvm.i64
   // CHECK: %[[DESC4:.*]] = llvm.insertvalue %[[DESCSTRIDE1]], %[[DESC3]][4, 1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC5:.*]] = llvm.insertvalue %[[ARG0]], %[[DESC4]][3, 0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESCSTRIDE0:.*]] = llvm.mul %[[ARG0]], %[[STRIDE0]] : !llvm.i64
   // CHECK: llvm.insertvalue %[[DESCSTRIDE0]], %[[DESC5]][4, 0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
+  // CHECK32: %[[DESC:.*]] = llvm.mlir.undef : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC0:.*]] = llvm.insertvalue %{{.*}}, %[[DESC]][0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC1:.*]] = llvm.insertvalue %{{.*}}, %[[DESC0]][1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[STRIDE0:.*]] = llvm.extractvalue %[[MEMREF]][4, 0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[STRIDE1:.*]] = llvm.extractvalue %[[MEMREF]][4, 1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[OFF:.*]] = llvm.extractvalue %[[MEMREF]][2] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[OFFINC:.*]] = llvm.mul %[[ARG0]], %[[STRIDE0]] : !llvm.i32
+  // CHECK32: %[[OFF1:.*]] = llvm.add %[[OFF]], %[[OFFINC]] : !llvm.i32
+  // CHECK32: %[[OFFINC1:.*]] = llvm.mul %[[ARG1]], %[[STRIDE1]] : !llvm.i32
+  // CHECK32: %[[OFF2:.*]] = llvm.add %[[OFF1]], %[[OFFINC1]] : !llvm.i32
+  // CHECK32: %[[DESC2:.*]] = llvm.insertvalue %[[OFF2]], %[[DESC1]][2] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC3:.*]] = llvm.insertvalue %[[ARG1]], %[[DESC2]][3, 1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESCSTRIDE1:.*]] = llvm.mul %[[ARG1]], %[[STRIDE1]] : !llvm.i32
+  // CHECK32: %[[DESC4:.*]] = llvm.insertvalue %[[DESCSTRIDE1]], %[[DESC3]][4, 1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC5:.*]] = llvm.insertvalue %[[ARG0]], %[[DESC4]][3, 0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESCSTRIDE0:.*]] = llvm.mul %[[ARG0]], %[[STRIDE0]] : !llvm.i32
+
   %1 = subview %0[%arg0, %arg1][%arg0, %arg1][%arg0, %arg1] :
     memref<64x4xf32, affine_map<(d0, d1) -> (d0 * 4 + d1)>> to memref<?x?xf32, affine_map<(d0, d1)[s0, s1, s2] -> (d0 * s1 + d1 * s2 + s0)>>
   return
 }
 
 // CHECK-LABEL: func @subview_const_size(
+// CHECK32-LABEL: func @subview_const_size(
 func @subview_const_size(%0 : memref<64x4xf32, affine_map<(d0, d1) -> (d0 * 4 + d1)>>, %arg0 : index, %arg1 : index, %arg2 : index) {
   // The last "insertvalue" that populates the memref descriptor from the function arguments.
   // CHECK: %[[MEMREF:.*]] = llvm.insertvalue %{{.*}}, %{{.*}}[4, 1]
+  // CHECK32: %[[MEMREF:.*]] = llvm.insertvalue %{{.*}}, %{{.*}}[4, 1]
 
   // CHECK: %[[DESC:.*]] = llvm.mlir.undef : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC0:.*]] = llvm.insertvalue %{{.*}}, %[[DESC]][0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC1:.*]] = llvm.insertvalue %{{.*}}, %[[DESC0]][1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[STRIDE0:.*]] = llvm.extractvalue %[[MEMREF]][4, 0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[STRIDE1:.*]] = llvm.extractvalue %[[MEMREF]][4, 1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[CST4:.*]] = llvm.mlir.constant(4 : i64)
   // CHECK: %[[CST2:.*]] = llvm.mlir.constant(2 : i64)
   // CHECK: %[[OFF:.*]] = llvm.extractvalue %[[MEMREF]][2] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[OFFINC:.*]] = llvm.mul %[[ARG0]], %[[STRIDE0]] : !llvm.i64
   // CHECK: %[[OFF1:.*]] = llvm.add %[[OFF]], %[[OFFINC]] : !llvm.i64
   // CHECK: %[[OFFINC1:.*]] = llvm.mul %[[ARG1]], %[[STRIDE1]] : !llvm.i64
   // CHECK: %[[OFF2:.*]] = llvm.add %[[OFF1]], %[[OFFINC1]] : !llvm.i64
   // CHECK: %[[DESC2:.*]] = llvm.insertvalue %[[OFF2]], %[[DESC1]][2] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC3:.*]] = llvm.insertvalue %[[CST2]], %[[DESC2]][3, 1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESCSTRIDE1:.*]] = llvm.mul %[[ARG1]], %[[STRIDE1]] : !llvm.i64
   // CHECK: %[[DESC4:.*]] = llvm.insertvalue %[[DESCSTRIDE1]], %[[DESC3]][4, 1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC5:.*]] = llvm.insertvalue %[[CST4]], %[[DESC4]][3, 0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESCSTRIDE0:.*]] = llvm.mul %[[ARG0]], %[[STRIDE0]] : !llvm.i64
   // CHECK: llvm.insertvalue %[[DESCSTRIDE0]], %[[DESC5]][4, 0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
+  // CHECK32: %[[DESC:.*]] = llvm.mlir.undef : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC0:.*]] = llvm.insertvalue %{{.*}}, %[[DESC]][0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC1:.*]] = llvm.insertvalue %{{.*}}, %[[DESC0]][1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[STRIDE0:.*]] = llvm.extractvalue %[[MEMREF]][4, 0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[STRIDE1:.*]] = llvm.extractvalue %[[MEMREF]][4, 1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[CST4:.*]] = llvm.mlir.constant(4 : i64)
+  // CHECK32: %[[CST2:.*]] = llvm.mlir.constant(2 : i64)
+  // CHECK32: %[[OFF:.*]] = llvm.extractvalue %[[MEMREF]][2] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[OFFINC:.*]] = llvm.mul %[[ARG0]], %[[STRIDE0]] : !llvm.i32
+  // CHECK32: %[[OFF1:.*]] = llvm.add %[[OFF]], %[[OFFINC]] : !llvm.i32
+  // CHECK32: %[[OFFINC1:.*]] = llvm.mul %[[ARG1]], %[[STRIDE1]] : !llvm.i32
+  // CHECK32: %[[OFF2:.*]] = llvm.add %[[OFF1]], %[[OFFINC1]] : !llvm.i32
+  // CHECK32: %[[DESC2:.*]] = llvm.insertvalue %[[OFF2]], %[[DESC1]][2] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC3:.*]] = llvm.insertvalue %[[CST2]], %[[DESC2]][3, 1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESCSTRIDE1:.*]] = llvm.mul %[[ARG1]], %[[STRIDE1]] : !llvm.i32
+  // CHECK32: %[[DESC4:.*]] = llvm.insertvalue %[[DESCSTRIDE1]], %[[DESC3]][4, 1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC5:.*]] = llvm.insertvalue %[[CST4]], %[[DESC4]][3, 0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESCSTRIDE0:.*]] = llvm.mul %[[ARG0]], %[[STRIDE0]] : !llvm.i32
+  // CHECK32: llvm.insertvalue %[[DESCSTRIDE0]], %[[DESC5]][4, 0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
   %1 = subview %0[%arg0, %arg1][][%arg0, %arg1] :
     memref<64x4xf32, affine_map<(d0, d1) -> (d0 * 4 + d1)>> to memref<4x2xf32, affine_map<(d0, d1)[s0, s1, s2] -> (d0 * s1 + d1 * s2 + s0)>>
   return
 }
 
 // CHECK-LABEL: func @subview_const_stride(
+// CHECK32-LABEL: func @subview_const_stride(
 func @subview_const_stride(%0 : memref<64x4xf32, affine_map<(d0, d1) -> (d0 * 4 + d1)>>, %arg0 : index, %arg1 : index, %arg2 : index) {
   // The last "insertvalue" that populates the memref descriptor from the function arguments.
   // CHECK: %[[MEMREF:.*]] = llvm.insertvalue %{{.*}}, %{{.*}}[4, 1]
+  // CHECK32: %[[MEMREF:.*]] = llvm.insertvalue %{{.*}}, %{{.*}}[4, 1]
 
   // CHECK: %[[DESC:.*]] = llvm.mlir.undef : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC0:.*]] = llvm.insertvalue %{{.*}}, %[[DESC]][0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC1:.*]] = llvm.insertvalue %{{.*}}, %[[DESC0]][1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[STRIDE0:.*]] = llvm.extractvalue %[[MEMREF]][4, 0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[STRIDE1:.*]] = llvm.extractvalue %[[MEMREF]][4, 1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[OFF:.*]] = llvm.extractvalue %[[MEMREF]][2] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[OFFINC:.*]] = llvm.mul %[[ARG0]], %[[STRIDE0]] : !llvm.i64
   // CHECK: %[[OFF1:.*]] = llvm.add %[[OFF]], %[[OFFINC]] : !llvm.i64
   // CHECK: %[[OFFINC1:.*]] = llvm.mul %[[ARG1]], %[[STRIDE1]] : !llvm.i64
   // CHECK: %[[OFF2:.*]] = llvm.add %[[OFF1]], %[[OFFINC1]] : !llvm.i64
   // CHECK: %[[DESC2:.*]] = llvm.insertvalue %[[OFF2]], %[[DESC1]][2] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC3:.*]] = llvm.insertvalue %[[ARG1]], %[[DESC2]][3, 1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[CST2:.*]] = llvm.mlir.constant(2 : i64)
   // CHECK: %[[DESC4:.*]] = llvm.insertvalue %[[CST2]], %[[DESC3]][4, 1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC5:.*]] = llvm.insertvalue %[[ARG0]], %[[DESC4]][3, 0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[CST4:.*]] = llvm.mlir.constant(4 : i64)
   // CHECK: llvm.insertvalue %[[CST4]], %[[DESC5]][4, 0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
+  // CHECK32: %[[DESC:.*]] = llvm.mlir.undef : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC0:.*]] = llvm.insertvalue %{{.*}}, %[[DESC]][0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC1:.*]] = llvm.insertvalue %{{.*}}, %[[DESC0]][1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[STRIDE0:.*]] = llvm.extractvalue %[[MEMREF]][4, 0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[STRIDE1:.*]] = llvm.extractvalue %[[MEMREF]][4, 1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[OFF:.*]] = llvm.extractvalue %[[MEMREF]][2] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[OFFINC:.*]] = llvm.mul %[[ARG0]], %[[STRIDE0]] : !llvm.i32
+  // CHECK32: %[[OFF1:.*]] = llvm.add %[[OFF]], %[[OFFINC]] : !llvm.i32
+  // CHECK32: %[[OFFINC1:.*]] = llvm.mul %[[ARG1]], %[[STRIDE1]] : !llvm.i32
+  // CHECK32: %[[OFF2:.*]] = llvm.add %[[OFF1]], %[[OFFINC1]] : !llvm.i32
+  // CHECK32: %[[DESC2:.*]] = llvm.insertvalue %[[OFF2]], %[[DESC1]][2] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC3:.*]] = llvm.insertvalue %[[ARG1]], %[[DESC2]][3, 1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[CST2:.*]] = llvm.mlir.constant(2 : i64)
+  // CHECK32: %[[DESC4:.*]] = llvm.insertvalue %[[CST2]], %[[DESC3]][4, 1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC5:.*]] = llvm.insertvalue %[[ARG0]], %[[DESC4]][3, 0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[CST4:.*]] = llvm.mlir.constant(4 : i64)
+  // CHECK32: llvm.insertvalue %[[CST4]], %[[DESC5]][4, 0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
   %1 = subview %0[%arg0, %arg1][%arg0, %arg1][] :
     memref<64x4xf32, affine_map<(d0, d1) -> (d0 * 4 + d1)>> to memref<?x?xf32, affine_map<(d0, d1)[s0] -> (d0 * 4 + d1 * 2 + s0)>>
   return
 }
 
 // CHECK-LABEL: func @subview_const_stride_and_offset(
+// CHECK32-LABEL: func @subview_const_stride_and_offset(
 func @subview_const_stride_and_offset(%0 : memref<64x4xf32, affine_map<(d0, d1) -> (d0 * 4 + d1)>>) {
   // The last "insertvalue" that populates the memref descriptor from the function arguments.
   // CHECK: %[[MEMREF:.*]] = llvm.insertvalue %{{.*}}, %{{.*}}[4, 1]
+  // CHECK32: %[[MEMREF:.*]] = llvm.insertvalue %{{.*}}, %{{.*}}[4, 1]
 
   // CHECK: %[[DESC:.*]] = llvm.mlir.undef : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC0:.*]] = llvm.insertvalue %{{.*}}, %[[DESC]][0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC1:.*]] = llvm.insertvalue %{{.*}}, %[[DESC0]][1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[STRIDE0:.*]] = llvm.extractvalue %[[MEMREF]][4, 0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[STRIDE1:.*]] = llvm.extractvalue %[[MEMREF]][4, 1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[CST62:.*]] = llvm.mlir.constant(62 : i64)
   // CHECK: %[[CST3:.*]] = llvm.mlir.constant(3 : i64)
   // CHECK: %[[CST8:.*]] = llvm.mlir.constant(8 : index)
   // CHECK: %[[DESC2:.*]] = llvm.insertvalue %[[CST8]], %[[DESC1]][2] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC3:.*]] = llvm.insertvalue %[[CST3]], %[[DESC2]][3, 1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[CST1:.*]] = llvm.mlir.constant(1 : i64)
   // CHECK: %[[DESC4:.*]] = llvm.insertvalue %[[CST1]], %[[DESC3]][4, 1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[DESC5:.*]] = llvm.insertvalue %[[CST62]], %[[DESC4]][3, 0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: %[[CST4:.*]] = llvm.mlir.constant(4 : i64)
   // CHECK: llvm.insertvalue %[[CST4]], %[[DESC5]][4, 0] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
+  // CHECK32: %[[DESC:.*]] = llvm.mlir.undef : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC0:.*]] = llvm.insertvalue %{{.*}}, %[[DESC]][0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC1:.*]] = llvm.insertvalue %{{.*}}, %[[DESC0]][1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[STRIDE0:.*]] = llvm.extractvalue %[[MEMREF]][4, 0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[STRIDE1:.*]] = llvm.extractvalue %[[MEMREF]][4, 1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[CST62:.*]] = llvm.mlir.constant(62 : i64)
+  // CHECK32: %[[CST3:.*]] = llvm.mlir.constant(3 : i64)
+  // CHECK32: %[[CST8:.*]] = llvm.mlir.constant(8 : index)
+  // CHECK32: %[[DESC2:.*]] = llvm.insertvalue %[[CST8]], %[[DESC1]][2] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC3:.*]] = llvm.insertvalue %[[CST3]], %[[DESC2]][3, 1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[CST1:.*]] = llvm.mlir.constant(1 : i64)
+  // CHECK32: %[[DESC4:.*]] = llvm.insertvalue %[[CST1]], %[[DESC3]][4, 1] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[DESC5:.*]] = llvm.insertvalue %[[CST62]], %[[DESC4]][3, 0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
+  // CHECK32: %[[CST4:.*]] = llvm.mlir.constant(4 : i64)
+  // CHECK32: llvm.insertvalue %[[CST4]], %[[DESC5]][4, 0] : !llvm<"{ float*, float*, i32, [2 x i32], [2 x i32] }">
   %1 = subview %0[][][] :
     memref<64x4xf32, affine_map<(d0, d1) -> (d0 * 4 + d1)>> to memref<62x3xf32, affine_map<(d0, d1) -> (d0 * 4 + d1 + 8)>>
   return
 }
 
 // -----
 
 // CHECK-LABEL: func @atomic_rmw

mlir/test/Target/llvmir.mlir

 llvm.func @callFenceInst() {
   // CHECK: fence syncscope("agent") release
   llvm.fence syncscope("agent") release
   // CHECK: fence release
   llvm.fence release
   // CHECK: fence release
   llvm.fence syncscope("") release
   llvm.return
-}
+}