[mlir] Move std.generic_atomic_rmw to the memref dialect

[rriddle]

Summary

This is part of splitting up the standard dialect. The move makes sense anyways,
given that the memref dialect already holds memref.atomic_rmw which is the non-region
sibling operation of std.generic_atomic_rmw (the relationship is even more clear given
they have nearly the same description % how they represent the inner computation).

[mehdi_amini]

LGTM, note you have a typo in the description: "compuation"

mlir/include/mlir/Dialect/MemRef/IR/MemRefOps.td

let extraClassDeclaration = [{
     /// Returns the number of elements transferred in the associated DMA
     /// operation.
     Value getNumElements() { return numElements(); }
   }];
   let hasFolder = 1;
 }
 
 //===----------------------------------------------------------------------===//
+// GenericAtomicRMWOp
+//===----------------------------------------------------------------------===//
+
+def GenericAtomicRMWOp : MemRef_Op<"generic_atomic_rmw", [
+      SingleBlockImplicitTerminator<"AtomicYieldOp">,
+      TypesMatchWith<"result type matches element type of memref",
+                     "memref", "result",
+                     "$_self.cast<MemRefType>().getElementType()">
+    ]> {
+  let summary = "atomic read-modify-write operation with a region";
+  let description = [{
+    The `memref.generic_atomic_rmw` operation provides a way to perform a
+    read-modify-write sequence that is free from data races. The memref operand
+    represents the buffer that the read and write will be performed against, as
+    accessed by the specified indices. The arity of the indices is the rank of
+    the memref. The result represents the latest value that was stored. The
+    region contains the code for the modification itself. The entry block has
+    a single argument that represents the value stored in `memref[indices]`
+    before the write is performed. No side-effecting ops are allowed in the
+    body of `GenericAtomicRMWOp`.
+
+    Example:
+
+    ```mlir
+    %x = memref.generic_atomic_rmw %I[%i] : memref<10xf32> {
+      ^bb0(%current_value : f32):
+        %c1 = arith.constant 1.0 : f32
+        %inc = arith.addf %c1, %current_value : f32
+        memref.atomic_yield %inc : f32
+    }
+    ```
+  }];
+
+  let arguments = (ins
+      MemRefOf<[AnySignlessInteger, AnyFloat]>:$memref,
+      Variadic<Index>:$indices);
+
+  let results = (outs
+      AnyTypeOf<[AnySignlessInteger, AnyFloat]>:$result);
+
+  let regions = (region AnyRegion:$atomic_body);
+
+  let skipDefaultBuilders = 1;
+  let builders = [OpBuilder<(ins "Value":$memref, "ValueRange":$ivs)>];
+
+  let extraClassDeclaration = [{
+    // TODO: remove post migrating callers.
+    Region &body() { return getRegion(); }
+
+    // The value stored in memref[ivs].
+    Value getCurrentValue() {
+      return getRegion().getArgument(0);
+    }
+    MemRefType getMemRefType() {
+      return memref().getType().cast<MemRefType>();
+    }
+  }];
+}
+
+def AtomicYieldOp : MemRef_Op<"atomic_yield", [
+      HasParent<"GenericAtomicRMWOp">,
+      NoSideEffect,
+      Terminator
+    ]> {
+  let summary = "yield operation for GenericAtomicRMWOp";
+  let description = [{
+    "memref.atomic_yield" yields an SSA value from a
+    GenericAtomicRMWOp region.
+  }];
+
+  let arguments = (ins AnyType:$result);
+  let assemblyFormat = "$result attr-dict `:` type($result)";
+}
+
+//===----------------------------------------------------------------------===//
 // GetGlobalOp
 //===----------------------------------------------------------------------===//
 
 def MemRef_GetGlobalOp : MemRef_Op<"get_global",
     [NoSideEffect, DeclareOpInterfaceMethods<SymbolUserOpInterface>]> {
   let summary = "get the memref pointing to a global variable";
   let description = [{
      The `memref.get_global` operation retrieves the memref pointing to a

 def AtomicRMWOp : MemRef_Op<"atomic_rmw", [
       AllTypesMatch<["value", "result"]>,
       TypesMatchWith<"value type matches element type of memref",
                      "memref", "value",
                      "$_self.cast<MemRefType>().getElementType()">
     ]> {
   let summary = "atomic read-modify-write operation";
   let description = [{
-    The `atomic_rmw` operation provides a way to perform a read-modify-write
+    The `memref.atomic_rmw` operation provides a way to perform a read-modify-write
     sequence that is free from data races. The kind enumeration specifies the
     modification to perform. The value operand represents the new value to be
     applied during the modification. The memref operand represents the buffer
     that the read and write will be performed against, as accessed by the
     specified indices. The arity of the indices is the rank of the memref. The
     result represents the latest value that was stored.
 
     Example:
 
     ```mlir
-    %x = arith.atomic_rmw "addf" %value, %I[%i] : (f32, memref<10xf32>) -> f32
+    %x = memref.atomic_rmw "addf" %value, %I[%i] : (f32, memref<10xf32>) -> f32
     ```
   }];
 
   let arguments = (ins
       AtomicRMWKindAttr:$kind,
       AnyTypeOf<[AnySignlessInteger, AnyFloat]>:$value,
       MemRefOf<[AnySignlessInteger, AnyFloat]>:$memref,
       Variadic<Index>:$indices);

mlir/include/mlir/Dialect/StandardOps/IR/Ops.td

def AssertOp : Std_Op<"assert"> {
   let assemblyFormat = "$arg `,` $msg attr-dict";
 
   // AssertOp is fully verified by its traits.
   let verifier = ?;
 
   let hasCanonicalizeMethod = 1;
 }
 
-def GenericAtomicRMWOp : Std_Op<"generic_atomic_rmw", [
-      SingleBlockImplicitTerminator<"AtomicYieldOp">,
-      TypesMatchWith<"result type matches element type of memref",
-                     "memref", "result",
-                     "$_self.cast<MemRefType>().getElementType()">
-    ]> {
-  let summary = "atomic read-modify-write operation with a region";
-  let description = [{
-    The `generic_atomic_rmw` operation provides a way to perform a read-modify-write
-    sequence that is free from data races. The memref operand represents the
-    buffer that the read and write will be performed against, as accessed by
-    the specified indices. The arity of the indices is the rank of the memref.
-    The result represents the latest value that was stored. The region contains
-    the code for the modification itself. The entry block has a single argument
-    that represents the value stored in `memref[indices]` before the write is
-    performed. No side-effecting ops are allowed in the body of
-    `GenericAtomicRMWOp`.
-
-    Example:
-
-    ```mlir
-    %x = generic_atomic_rmw %I[%i] : memref<10xf32> {
-      ^bb0(%current_value : f32):
-        %c1 = arith.constant 1.0 : f32
-        %inc = arith.addf %c1, %current_value : f32
-        atomic_yield %inc : f32
-    }
-    ```
-  }];
-
-  let arguments = (ins
-      MemRefOf<[AnySignlessInteger, AnyFloat]>:$memref,
-      Variadic<Index>:$indices);
-
-  let results = (outs
-      AnyTypeOf<[AnySignlessInteger, AnyFloat]>:$result);
-
-  let regions = (region AnyRegion:$atomic_body);
-
-  let skipDefaultBuilders = 1;
-  let builders = [OpBuilder<(ins "Value":$memref, "ValueRange":$ivs)>];
-
-  let extraClassDeclaration = [{
-    // TODO: remove post migrating callers.
-    Region &body() { return getRegion(); }
-
-    // The value stored in memref[ivs].
-    Value getCurrentValue() {
-      return getRegion().getArgument(0);
-    }
-    MemRefType getMemRefType() {
-      return getMemref().getType().cast<MemRefType>();
-    }
-  }];
-}
-
-def AtomicYieldOp : Std_Op<"atomic_yield", [
-      HasParent<"GenericAtomicRMWOp">,
-      NoSideEffect,
-      Terminator
-    ]> {
-  let summary = "yield operation for GenericAtomicRMWOp";
-  let description = [{
-    "atomic_yield" yields an SSA value from a GenericAtomicRMWOp region.
-  }];
-
-  let arguments = (ins AnyType:$result);
-  let assemblyFormat = "$result attr-dict `:` type($result)";
-}
-
 //===----------------------------------------------------------------------===//
 // BranchOp
 //===----------------------------------------------------------------------===//
 
 def BranchOp : Std_Op<"br",
     [DeclareOpInterfaceMethods<BranchOpInterface, ["getSuccessorForOperands"]>,
      NoSideEffect, Terminator]> {
   let summary = "branch operation";

mlir/lib/Conversion/MemRefToLLVM/MemRefToLLVM.cpp

Value extractSizeOfRankedMemRef(Type operandType, memref::DimOp dimOp,
     }
     Value index = adaptor.index();
     int64_t rank = memRefType.getRank();
     MemRefDescriptor memrefDescriptor(adaptor.source());
     return memrefDescriptor.size(rewriter, loc, index, rank);
   }
 };
 
+/// Common base for load and store operations on MemRefs. Restricts the match
+/// to supported MemRef types. Provides functionality to emit code accessing a
+/// specific element of the underlying data buffer.
+template <typename Derived>
+struct LoadStoreOpLowering : public ConvertOpToLLVMPattern<Derived> {
+  using ConvertOpToLLVMPattern<Derived>::ConvertOpToLLVMPattern;
+  using ConvertOpToLLVMPattern<Derived>::isConvertibleAndHasIdentityMaps;
+  using Base = LoadStoreOpLowering<Derived>;
+
+  LogicalResult match(Derived op) const override {
+    MemRefType type = op.getMemRefType();
+    return isConvertibleAndHasIdentityMaps(type) ? success() : failure();
+  }
+};
+
+/// Wrap a llvm.cmpxchg operation in a while loop so that the operation can be
+/// retried until it succeeds in atomically storing a new value into memory.
+///
+///      +---------------------------------+
+///      |   <code before the AtomicRMWOp> |
+///      |   <compute initial %loaded>     |
+///      |   br loop(%loaded)              |
+///      +---------------------------------+
+///             |
+///  -------|   |
+///  |      v   v
+///  |   +--------------------------------+
+///  |   | loop(%loaded):                 |
+///  |   |   <body contents>              |
+///  |   |   %pair = cmpxchg              |
+///  |   |   %ok = %pair[0]               |
+///  |   |   %new = %pair[1]              |
+///  |   |   cond_br %ok, end, loop(%new) |
+///  |   +--------------------------------+
+///  |          |        |
+///  |-----------        |
+///                      v
+///      +--------------------------------+
+///      | end:                           |
+///      |   <code after the AtomicRMWOp> |
+///      +--------------------------------+
+///
+struct GenericAtomicRMWOpLowering
+    : public LoadStoreOpLowering<memref::GenericAtomicRMWOp> {
+  using Base::Base;
+
+  LogicalResult
+  matchAndRewrite(memref::GenericAtomicRMWOp atomicOp, OpAdaptor adaptor,
+                  ConversionPatternRewriter &rewriter) const override {
+    auto loc = atomicOp.getLoc();
+    Type valueType = typeConverter->convertType(atomicOp.getResult().getType());
+
+    // Split the block into initial, loop, and ending parts.
+    auto *initBlock = rewriter.getInsertionBlock();
+    auto *loopBlock = rewriter.createBlock(
+        initBlock->getParent(), std::next(Region::iterator(initBlock)),
+        valueType, loc);
+    auto *endBlock = rewriter.createBlock(
+        loopBlock->getParent(), std::next(Region::iterator(loopBlock)));
+
+    // Operations range to be moved to `endBlock`.
+    auto opsToMoveStart = atomicOp->getIterator();
+    auto opsToMoveEnd = initBlock->back().getIterator();
+
+    // Compute the loaded value and branch to the loop block.
+    rewriter.setInsertionPointToEnd(initBlock);
+    auto memRefType = atomicOp.memref().getType().cast<MemRefType>();
+    auto dataPtr = getStridedElementPtr(loc, memRefType, adaptor.memref(),
+                                        adaptor.indices(), rewriter);
+    Value init = rewriter.create<LLVM::LoadOp>(loc, dataPtr);
+    rewriter.create<LLVM::BrOp>(loc, init, loopBlock);
+
+    // Prepare the body of the loop block.
+    rewriter.setInsertionPointToStart(loopBlock);
+
+    // Clone the GenericAtomicRMWOp region and extract the result.
+    auto loopArgument = loopBlock->getArgument(0);
+    BlockAndValueMapping mapping;
+    mapping.map(atomicOp.getCurrentValue(), loopArgument);
+    Block &entryBlock = atomicOp.body().front();
+    for (auto &nestedOp : entryBlock.without_terminator()) {
+      Operation *clone = rewriter.clone(nestedOp, mapping);
+      mapping.map(nestedOp.getResults(), clone->getResults());
+    }
+    Value result = mapping.lookup(entryBlock.getTerminator()->getOperand(0));
+
+    // Prepare the epilog of the loop block.
+    // Append the cmpxchg op to the end of the loop block.
+    auto successOrdering = LLVM::AtomicOrdering::acq_rel;
+    auto failureOrdering = LLVM::AtomicOrdering::monotonic;
+    auto boolType = IntegerType::get(rewriter.getContext(), 1);
+    auto pairType = LLVM::LLVMStructType::getLiteral(rewriter.getContext(),
+                                                     {valueType, boolType});
+    auto cmpxchg = rewriter.create<LLVM::AtomicCmpXchgOp>(
+        loc, pairType, dataPtr, loopArgument, result, successOrdering,
+        failureOrdering);
+    // Extract the %new_loaded and %ok values from the pair.
+    Value newLoaded = rewriter.create<LLVM::ExtractValueOp>(
+        loc, valueType, cmpxchg, rewriter.getI64ArrayAttr({0}));
+    Value ok = rewriter.create<LLVM::ExtractValueOp>(
+        loc, boolType, cmpxchg, rewriter.getI64ArrayAttr({1}));
+
+    // Conditionally branch to the end or back to the loop depending on %ok.
+    rewriter.create<LLVM::CondBrOp>(loc, ok, endBlock, ArrayRef<Value>(),
+                                    loopBlock, newLoaded);
+
+    rewriter.setInsertionPointToEnd(endBlock);
+    moveOpsRange(atomicOp.getResult(), newLoaded, std::next(opsToMoveStart),
+                 std::next(opsToMoveEnd), rewriter);
+
+    // The 'result' of the atomic_rmw op is the newly loaded value.
+    rewriter.replaceOp(atomicOp, {newLoaded});
+
+    return success();
+  }
+
+private:
+  // Clones a segment of ops [start, end) and erases the original.
+  void moveOpsRange(ValueRange oldResult, ValueRange newResult,
+                    Block::iterator start, Block::iterator end,
+                    ConversionPatternRewriter &rewriter) const {
+    BlockAndValueMapping mapping;
+    mapping.map(oldResult, newResult);
+    SmallVector<Operation *, 2> opsToErase;
+    for (auto it = start; it != end; ++it) {
+      rewriter.clone(*it, mapping);
+      opsToErase.push_back(&*it);
+    }
+    for (auto *it : opsToErase)
+      rewriter.eraseOp(it);
+  }
+};
+
 /// Returns the LLVM type of the global variable given the memref type `type`.
 static Type convertGlobalMemrefTypeToLLVM(MemRefType type,
                                           LLVMTypeConverter &typeConverter) {
   // LLVM type for a global memref will be a multi-dimension array. For
   // declarations or uninitialized global memrefs, we can potentially flatten
   // this to a 1D array. However, for memref.global's with an initial value,
   // we do not intend to flatten the ElementsAttribute when going from std ->
   // LLVM dialect, so the LLVM type needs to me a multi-dimension array.
auto deadBeefPtr =
         rewriter.create<LLVM::IntToPtrOp>(loc, elementPtrType, deadBeefConst);
 
     // Both allocated and aligned pointers are same. We could potentially stash
     // a nullptr for the allocated pointer since we do not expect any dealloc.
     return std::make_tuple(deadBeefPtr, gep);
   }
 };
 
-// Common base for load and store operations on MemRefs. Restricts the match
-// to supported MemRef types. Provides functionality to emit code accessing a
-// specific element of the underlying data buffer.
-template <typename Derived>
-struct LoadStoreOpLowering : public ConvertOpToLLVMPattern<Derived> {
-  using ConvertOpToLLVMPattern<Derived>::ConvertOpToLLVMPattern;
-  using ConvertOpToLLVMPattern<Derived>::isConvertibleAndHasIdentityMaps;
-  using Base = LoadStoreOpLowering<Derived>;
-
-  LogicalResult match(Derived op) const override {
-    MemRefType type = op.getMemRefType();
-    return isConvertibleAndHasIdentityMaps(type) ? success() : failure();
-  }
-};
-
 // Load operation is lowered to obtaining a pointer to the indexed element
 // and loading it.
 struct LoadOpLowering : public LoadStoreOpLowering<memref::LoadOp> {
   using Base::Base;
 
   LogicalResult
   matchAndRewrite(memref::LoadOp loadOp, OpAdaptor adaptor,
                   ConversionPatternRewriter &rewriter) const override {
void mlir::populateMemRefToLLVMConversionPatterns(LLVMTypeConverter &converter,
                                                   RewritePatternSet &patterns) {
   // clang-format off
   patterns.add<
       AllocaOpLowering,
       AllocaScopeOpLowering,
       AtomicRMWOpLowering,
       AssumeAlignmentOpLowering,
       DimOpLowering,
+      GenericAtomicRMWOpLowering,
       GlobalMemrefOpLowering,
       GetGlobalMemrefOpLowering,
       LoadOpLowering,
       MemRefCastOpLowering,
       MemRefCopyOpLowering,
       MemRefReinterpretCastOpLowering,
       MemRefReshapeOpLowering,
       PrefetchOpLowering,

mlir/lib/Conversion/StandardToLLVM/StandardToLLVM.cpp

if (succeeded(typeConverter->convertTypes(adaptor.inputs().getTypes(),
         convertedTypes == op.outputs().getType()) {
       rewriter.replaceOp(op, adaptor.inputs());
       return success();
     }
     return failure();
   }
 };
 
-// Common base for load and store operations on MemRefs.  Restricts the match
-// to supported MemRef types. Provides functionality to emit code accessing a
-// specific element of the underlying data buffer.
-template <typename Derived>
-struct LoadStoreOpLowering : public ConvertOpToLLVMPattern<Derived> {
-  using ConvertOpToLLVMPattern<Derived>::ConvertOpToLLVMPattern;
-  using ConvertOpToLLVMPattern<Derived>::isConvertibleAndHasIdentityMaps;
-  using Base = LoadStoreOpLowering<Derived>;
-
-  LogicalResult match(Derived op) const override {
-    MemRefType type = op.getMemRefType();
-    return isConvertibleAndHasIdentityMaps(type) ? success() : failure();
-  }
-};
-
 // Base class for LLVM IR lowering terminator operations with successors.
 template <typename SourceOp, typename TargetOp>
 struct OneToOneLLVMTerminatorLowering
     : public ConvertOpToLLVMPattern<SourceOp> {
   using ConvertOpToLLVMPattern<SourceOp>::ConvertOpToLLVMPattern;
   using Super = OneToOneLLVMTerminatorLowering<SourceOp, TargetOp>;
 
   LogicalResult
struct CondBranchOpLowering
     : public OneToOneLLVMTerminatorLowering<CondBranchOp, LLVM::CondBrOp> {
   using Super::Super;
 };
 struct SwitchOpLowering
     : public OneToOneLLVMTerminatorLowering<SwitchOp, LLVM::SwitchOp> {
   using Super::Super;
 };
 
-/// Wrap a llvm.cmpxchg operation in a while loop so that the operation can be
-/// retried until it succeeds in atomically storing a new value into memory.
-///
-///      +---------------------------------+
-///      |   <code before the AtomicRMWOp> |
-///      |   <compute initial %loaded>     |
-///      |   br loop(%loaded)              |
-///      +---------------------------------+
-///             |
-///  -------|   |
-///  |      v   v
-///  |   +--------------------------------+
-///  |   | loop(%loaded):                 |
-///  |   |   <body contents>              |
-///  |   |   %pair = cmpxchg              |
-///  |   |   %ok = %pair[0]               |
-///  |   |   %new = %pair[1]              |
-///  |   |   cond_br %ok, end, loop(%new) |
-///  |   +--------------------------------+
-///  |          |        |
-///  |-----------        |
-///                      v
-///      +--------------------------------+
-///      | end:                           |
-///      |   <code after the AtomicRMWOp> |
-///      +--------------------------------+
-///
-struct GenericAtomicRMWOpLowering
-    : public LoadStoreOpLowering<GenericAtomicRMWOp> {
-  using Base::Base;
-
-  LogicalResult
-  matchAndRewrite(GenericAtomicRMWOp atomicOp, OpAdaptor adaptor,
-                  ConversionPatternRewriter &rewriter) const override {
-
-    auto loc = atomicOp.getLoc();
-    Type valueType = typeConverter->convertType(atomicOp.getResult().getType());
-
-    // Split the block into initial, loop, and ending parts.
-    auto *initBlock = rewriter.getInsertionBlock();
-    auto *loopBlock = rewriter.createBlock(
-        initBlock->getParent(), std::next(Region::iterator(initBlock)),
-        valueType, loc);
-    auto *endBlock = rewriter.createBlock(
-        loopBlock->getParent(), std::next(Region::iterator(loopBlock)));
-
-    // Operations range to be moved to `endBlock`.
-    auto opsToMoveStart = atomicOp->getIterator();
-    auto opsToMoveEnd = initBlock->back().getIterator();
-
-    // Compute the loaded value and branch to the loop block.
-    rewriter.setInsertionPointToEnd(initBlock);
-    auto memRefType = atomicOp.getMemref().getType().cast<MemRefType>();
-    auto dataPtr = getStridedElementPtr(loc, memRefType, adaptor.getMemref(),
-                                        adaptor.getIndices(), rewriter);
-    Value init = rewriter.create<LLVM::LoadOp>(loc, dataPtr);
-    rewriter.create<LLVM::BrOp>(loc, init, loopBlock);
-
-    // Prepare the body of the loop block.
-    rewriter.setInsertionPointToStart(loopBlock);
-
-    // Clone the GenericAtomicRMWOp region and extract the result.
-    auto loopArgument = loopBlock->getArgument(0);
-    BlockAndValueMapping mapping;
-    mapping.map(atomicOp.getCurrentValue(), loopArgument);
-    Block &entryBlock = atomicOp.body().front();
-    for (auto &nestedOp : entryBlock.without_terminator()) {
-      Operation *clone = rewriter.clone(nestedOp, mapping);
-      mapping.map(nestedOp.getResults(), clone->getResults());
-    }
-    Value result = mapping.lookup(entryBlock.getTerminator()->getOperand(0));
-
-    // Prepare the epilog of the loop block.
-    // Append the cmpxchg op to the end of the loop block.
-    auto successOrdering = LLVM::AtomicOrdering::acq_rel;
-    auto failureOrdering = LLVM::AtomicOrdering::monotonic;
-    auto boolType = IntegerType::get(rewriter.getContext(), 1);
-    auto pairType = LLVM::LLVMStructType::getLiteral(rewriter.getContext(),
-                                                     {valueType, boolType});
-    auto cmpxchg = rewriter.create<LLVM::AtomicCmpXchgOp>(
-        loc, pairType, dataPtr, loopArgument, result, successOrdering,
-        failureOrdering);
-    // Extract the %new_loaded and %ok values from the pair.
-    Value newLoaded = rewriter.create<LLVM::ExtractValueOp>(
-        loc, valueType, cmpxchg, rewriter.getI64ArrayAttr({0}));
-    Value ok = rewriter.create<LLVM::ExtractValueOp>(
-        loc, boolType, cmpxchg, rewriter.getI64ArrayAttr({1}));
-
-    // Conditionally branch to the end or back to the loop depending on %ok.
-    rewriter.create<LLVM::CondBrOp>(loc, ok, endBlock, ArrayRef<Value>(),
-                                    loopBlock, newLoaded);
-
-    rewriter.setInsertionPointToEnd(endBlock);
-    moveOpsRange(atomicOp.getResult(), newLoaded, std::next(opsToMoveStart),
-                 std::next(opsToMoveEnd), rewriter);
-
-    // The 'result' of the atomic_rmw op is the newly loaded value.
-    rewriter.replaceOp(atomicOp, {newLoaded});
-
-    return success();
-  }
-
-private:
-  // Clones a segment of ops [start, end) and erases the original.
-  void moveOpsRange(ValueRange oldResult, ValueRange newResult,
-                    Block::iterator start, Block::iterator end,
-                    ConversionPatternRewriter &rewriter) const {
-    BlockAndValueMapping mapping;
-    mapping.map(oldResult, newResult);
-    SmallVector<Operation *, 2> opsToErase;
-    for (auto it = start; it != end; ++it) {
-      rewriter.clone(*it, mapping);
-      opsToErase.push_back(&*it);
-    }
-    for (auto *it : opsToErase)
-      rewriter.eraseOp(it);
-  }
-};
-
 } // namespace
 
 void mlir::populateStdToLLVMFuncOpConversionPattern(
     LLVMTypeConverter &converter, RewritePatternSet &patterns) {
   if (converter.getOptions().useBarePtrCallConv)
     patterns.add<BarePtrFuncOpConversion>(converter);
   else
     patterns.add<FuncOpConversion>(converter);
 }
 
 void mlir::populateStdToLLVMConversionPatterns(LLVMTypeConverter &converter,
                                                RewritePatternSet &patterns) {
   populateStdToLLVMFuncOpConversionPattern(converter, patterns);
   // clang-format off
   patterns.add<
       AssertOpLowering,
       BranchOpLowering,
       CallIndirectOpLowering,
       CallOpLowering,
       CondBranchOpLowering,
       ConstantOpLowering,
-      GenericAtomicRMWOpLowering,
       ReturnOpLowering,
       SelectOpLowering,
       SwitchOpLowering>(converter);
   // clang-format on
 }
 
 namespace {
 /// A pass converting MLIR operations into the LLVM IR dialect.

mlir/lib/Dialect/MemRef/IR/MemRefOps.cpp

static LogicalResult verify(DmaWaitOp op) {
   if (numTagIndices != tagMemRefRank)
     return op.emitOpError() << "expected tagIndices to have the same number of "
                                "elements as the tagMemRef rank, expected "
                             << tagMemRefRank << ", but got " << numTagIndices;
   return success();
 }
 
 //===----------------------------------------------------------------------===//
+// GenericAtomicRMWOp
+//===----------------------------------------------------------------------===//
+
+void GenericAtomicRMWOp::build(OpBuilder &builder, OperationState &result,
+                               Value memref, ValueRange ivs) {
+  result.addOperands(memref);
+  result.addOperands(ivs);
+
+  if (auto memrefType = memref.getType().dyn_cast<MemRefType>()) {
+    Type elementType = memrefType.getElementType();
+    result.addTypes(elementType);
+
+    Region *bodyRegion = result.addRegion();
+    bodyRegion->push_back(new Block());
+    bodyRegion->addArgument(elementType, memref.getLoc());
+  }
+}
+
+static LogicalResult verify(GenericAtomicRMWOp op) {
+  auto &body = op.getRegion();
+  if (body.getNumArguments() != 1)
+    return op.emitOpError("expected single number of entry block arguments");
+
+  if (op.getResult().getType() != body.getArgument(0).getType())
+    return op.emitOpError(
+        "expected block argument of the same type result type");
+
+  bool hasSideEffects =
+      body.walk([&](Operation *nestedOp) {
+            if (MemoryEffectOpInterface::hasNoEffect(nestedOp))
+              return WalkResult::advance();
+            nestedOp->emitError(
+                "body of 'memref.generic_atomic_rmw' should contain "
+                "only operations with no side effects");
+            return WalkResult::interrupt();
+          })
+          .wasInterrupted();
+  return hasSideEffects ? failure() : success();
+}
+
+static ParseResult parseGenericAtomicRMWOp(OpAsmParser &parser,
+                                           OperationState &result) {
+  OpAsmParser::OperandType memref;
+  Type memrefType;
+  SmallVector<OpAsmParser::OperandType, 4> ivs;
+
+  Type indexType = parser.getBuilder().getIndexType();
+  if (parser.parseOperand(memref) ||
+      parser.parseOperandList(ivs, OpAsmParser::Delimiter::Square) ||
+      parser.parseColonType(memrefType) ||
+      parser.resolveOperand(memref, memrefType, result.operands) ||
+      parser.resolveOperands(ivs, indexType, result.operands))
+    return failure();
+
+  Region *body = result.addRegion();
+  if (parser.parseRegion(*body, llvm::None, llvm::None) ||
+      parser.parseOptionalAttrDict(result.attributes))
+    return failure();
+  result.types.push_back(memrefType.cast<MemRefType>().getElementType());
+  return success();
+}
+
+static void print(OpAsmPrinter &p, GenericAtomicRMWOp op) {
+  p << ' ' << op.memref() << "[" << op.indices()
+    << "] : " << op.memref().getType() << ' ';
+  p.printRegion(op.getRegion());
+  p.printOptionalAttrDict(op->getAttrs());
+}
+
+//===----------------------------------------------------------------------===//
+// AtomicYieldOp
+//===----------------------------------------------------------------------===//
+
+static LogicalResult verify(AtomicYieldOp op) {
+  Type parentType = op->getParentOp()->getResultTypes().front();
+  Type resultType = op.result().getType();
+  if (parentType != resultType)
+    return op.emitOpError() << "types mismatch between yield op: " << resultType
+                            << " and its parent: " << parentType;
+  return success();
+}
+
+//===----------------------------------------------------------------------===//
 // GlobalOp
 //===----------------------------------------------------------------------===//
 
 static void printGlobalMemrefOpTypeAndInitialValue(OpAsmPrinter &p, GlobalOp op,
                                                    TypeAttr type,
                                                    Attribute initialValue) {
   p << type;
   if (!op.isExternal()) {

mlir/lib/Dialect/StandardOps/IR/Ops.cpp

LogicalResult AssertOp::canonicalize(AssertOp op, PatternRewriter &rewriter) {
   if (matchPattern(op.getArg(), m_One())) {
     rewriter.eraseOp(op);
     return success();
   }
   return failure();
 }
 
 //===----------------------------------------------------------------------===//
-// GenericAtomicRMWOp
-//===----------------------------------------------------------------------===//
-
-void GenericAtomicRMWOp::build(OpBuilder &builder, OperationState &result,
-                               Value memref, ValueRange ivs) {
-  result.addOperands(memref);
-  result.addOperands(ivs);
-
-  if (auto memrefType = memref.getType().dyn_cast<MemRefType>()) {
-    Type elementType = memrefType.getElementType();
-    result.addTypes(elementType);
-
-    Region *bodyRegion = result.addRegion();
-    bodyRegion->push_back(new Block());
-    bodyRegion->addArgument(elementType, memref.getLoc());
-  }
-}
-
-static LogicalResult verify(GenericAtomicRMWOp op) {
-  auto &body = op.getRegion();
-  if (body.getNumArguments() != 1)
-    return op.emitOpError("expected single number of entry block arguments");
-
-  if (op.getResult().getType() != body.getArgument(0).getType())
-    return op.emitOpError(
-        "expected block argument of the same type result type");
-
-  bool hasSideEffects =
-      body.walk([&](Operation *nestedOp) {
-            if (MemoryEffectOpInterface::hasNoEffect(nestedOp))
-              return WalkResult::advance();
-            nestedOp->emitError("body of 'generic_atomic_rmw' should contain "
-                                "only operations with no side effects");
-            return WalkResult::interrupt();
-          })
-          .wasInterrupted();
-  return hasSideEffects ? failure() : success();
-}
-
-static ParseResult parseGenericAtomicRMWOp(OpAsmParser &parser,
-                                           OperationState &result) {
-  OpAsmParser::OperandType memref;
-  Type memrefType;
-  SmallVector<OpAsmParser::OperandType, 4> ivs;
-
-  Type indexType = parser.getBuilder().getIndexType();
-  if (parser.parseOperand(memref) ||
-      parser.parseOperandList(ivs, OpAsmParser::Delimiter::Square) ||
-      parser.parseColonType(memrefType) ||
-      parser.resolveOperand(memref, memrefType, result.operands) ||
-      parser.resolveOperands(ivs, indexType, result.operands))
-    return failure();
-
-  Region *body = result.addRegion();
-  if (parser.parseRegion(*body, llvm::None, llvm::None) ||
-      parser.parseOptionalAttrDict(result.attributes))
-    return failure();
-  result.types.push_back(memrefType.cast<MemRefType>().getElementType());
-  return success();
-}
-
-static void print(OpAsmPrinter &p, GenericAtomicRMWOp op) {
-  p << ' ' << op.getMemref() << "[" << op.getIndices()
-    << "] : " << op.getMemref().getType() << ' ';
-  p.printRegion(op.getRegion());
-  p.printOptionalAttrDict(op->getAttrs());
-}
-
-//===----------------------------------------------------------------------===//
-// AtomicYieldOp
-//===----------------------------------------------------------------------===//
-
-static LogicalResult verify(AtomicYieldOp op) {
-  Type parentType = op->getParentOp()->getResultTypes().front();
-  Type resultType = op.getResult().getType();
-  if (parentType != resultType)
-    return op.emitOpError() << "types mismatch between yield op: " << resultType
-                            << " and its parent: " << parentType;
-  return success();
-}
-
-//===----------------------------------------------------------------------===//
 // BranchOp
 //===----------------------------------------------------------------------===//
 
 /// Given a successor, try to collapse it to a new destination if it only
 /// contains a passthrough unconditional branch. If the successor is
 /// collapsable, `successor` and `successorOperands` are updated to reference
 /// the new destination and values. `argStorage` is used as storage if operands
 /// to the collapsed successor need to be remapped. It must outlive uses of

mlir/lib/Dialect/StandardOps/Transforms/ExpandOps.cpp

 #include "mlir/Transforms/DialectConversion.h"
 
 using namespace mlir;
 
 namespace {
 
 /// Converts `atomic_rmw` that cannot be lowered to a simple atomic op with
 /// AtomicRMWOpLowering pattern, e.g. with "minf" or "maxf" attributes, to
-/// `generic_atomic_rmw` with the expanded code.
+/// `memref.generic_atomic_rmw` with the expanded code.
 ///
 /// %x = atomic_rmw "maxf" %fval, %F[%i] : (f32, memref<10xf32>) -> f32
 ///
 /// will be lowered to
 ///
-/// %x = std.generic_atomic_rmw %F[%i] : memref<10xf32> {
+/// %x = memref.generic_atomic_rmw %F[%i] : memref<10xf32> {
 /// ^bb0(%current: f32):
 ///   %cmp = arith.cmpf "ogt", %current, %fval : f32
 ///   %new_value = select %cmp, %current, %fval : f32
-///   atomic_yield %new_value : f32
+///   memref.atomic_yield %new_value : f32
 /// }
 struct AtomicRMWOpConverter : public OpRewritePattern<memref::AtomicRMWOp> {
 public:
   using OpRewritePattern::OpRewritePattern;
 
   LogicalResult matchAndRewrite(memref::AtomicRMWOp op,
                                 PatternRewriter &rewriter) const final {
     arith::CmpFPredicate predicate;
     switch (op.kind()) {
     case arith::AtomicRMWKind::maxf:
       predicate = arith::CmpFPredicate::OGT;
       break;
     case arith::AtomicRMWKind::minf:
       predicate = arith::CmpFPredicate::OLT;
       break;
     default:
       return failure();
     }
 
     auto loc = op.getLoc();
-    auto genericOp =
-        rewriter.create<GenericAtomicRMWOp>(loc, op.memref(), op.indices());
+    auto genericOp = rewriter.create<memref::GenericAtomicRMWOp>(
+        loc, op.memref(), op.indices());
     OpBuilder bodyBuilder =
         OpBuilder::atBlockEnd(genericOp.getBody(), rewriter.getListener());
 
     Value lhs = genericOp.getCurrentValue();
     Value rhs = op.value();
     Value cmp = bodyBuilder.create<arith::CmpFOp>(loc, predicate, lhs, rhs);
     Value select = bodyBuilder.create<SelectOp>(loc, cmp, lhs, rhs);
-    bodyBuilder.create<AtomicYieldOp>(loc, select);
+    bodyBuilder.create<memref::AtomicYieldOp>(loc, select);
 
     rewriter.replaceOp(op, genericOp.getResult());
     return success();
   }
 };
 
 /// Converts `memref.reshape` that has a target shape of a statically-known
 /// size to `memref.reinterpret_cast`.

mlir/test/Conversion/MemRefToLLVM/memref-to-llvm.mlir

 // -----
 
 // CHECK-LABEL: func @collapse_static_shape_with_non_identity_layout
 func @collapse_static_shape_with_non_identity_layout(%arg: memref<1x1x8x8xf32, affine_map<(d0, d1, d2, d3)[s0] -> (d0 * 64 + s0 + d1 * 64 + d2 * 8 + d3)>>) -> memref<64xf32, affine_map<(d0)[s0] -> (d0 + s0)>> {
 // CHECK-NOT: memref.collapse_shape
   %1 = memref.collapse_shape %arg [[0, 1, 2, 3]] : memref<1x1x8x8xf32, affine_map<(d0, d1, d2, d3)[s0] -> (d0 * 64 + s0 + d1 * 64 + d2 * 8 + d3)>> into memref<64xf32, affine_map<(d0)[s0] -> (d0 + s0)>>
   return %1 : memref<64xf32, affine_map<(d0)[s0] -> (d0 + s0)>>
 }
+
+// -----
+
+// CHECK-LABEL: func @generic_atomic_rmw
+func @generic_atomic_rmw(%I : memref<10xi32>, %i : index) {
+  %x = memref.generic_atomic_rmw %I[%i] : memref<10xi32> {
+    ^bb0(%old_value : i32):
+      memref.atomic_yield %old_value : i32
+  }
+  // CHECK: [[init:%.*]] = llvm.load %{{.*}} : !llvm.ptr<i32>
+  // CHECK-NEXT: llvm.br ^bb1([[init]] : i32)
+  // CHECK-NEXT: ^bb1([[loaded:%.*]]: i32):
+  // CHECK-NEXT: [[pair:%.*]] = llvm.cmpxchg %{{.*}}, [[loaded]], [[loaded]]
+  // CHECK-SAME:                    acq_rel monotonic : i32
+  // CHECK-NEXT: [[new:%.*]] = llvm.extractvalue [[pair]][0]
+  // CHECK-NEXT: [[ok:%.*]] = llvm.extractvalue [[pair]][1]
+  // CHECK-NEXT: llvm.cond_br [[ok]], ^bb2, ^bb1([[new]] : i32)
+  llvm.return
+}

mlir/test/Conversion/StandardToLLVM/standard-to-llvm.mlir

 // CHECK-NEXT: ^bb2:
 ^bb2:
 // CHECK-NEXT:  llvm.br ^bb1
   br ^bb1
 }
 
 // -----
 
-// CHECK-LABEL: func @generic_atomic_rmw
-func @generic_atomic_rmw(%I : memref<10xi32>, %i : index) -> i32 {
-  %x = generic_atomic_rmw %I[%i] : memref<10xi32> {
-    ^bb0(%old_value : i32):
-      %c1 = arith.constant 1 : i32
-      atomic_yield %c1 : i32
-  }
-  // CHECK: [[init:%.*]] = llvm.load %{{.*}} : !llvm.ptr<i32>
-  // CHECK-NEXT: llvm.br ^bb1([[init]] : i32)
-  // CHECK-NEXT: ^bb1([[loaded:%.*]]: i32):
-  // CHECK-NEXT: [[c1:%.*]] = llvm.mlir.constant(1 : i32)
-  // CHECK-NEXT: [[pair:%.*]] = llvm.cmpxchg %{{.*}}, [[loaded]], [[c1]]
-  // CHECK-SAME:                    acq_rel monotonic : i32
-  // CHECK-NEXT: [[new:%.*]] = llvm.extractvalue [[pair]][0]
-  // CHECK-NEXT: [[ok:%.*]] = llvm.extractvalue [[pair]][1]
-  // CHECK-NEXT: llvm.cond_br [[ok]], ^bb2, ^bb1([[new]] : i32)
-  // CHECK-NEXT: ^bb2:
-  %c2 = arith.constant 2 : i32
-  %add = arith.addi %c2, %x : i32
-  return %add : i32
-  // CHECK-NEXT: [[c2:%.*]] = llvm.mlir.constant(2 : i32)
-  // CHECK-NEXT: [[add:%.*]] = llvm.add [[c2]], [[new]] : i32
-  // CHECK-NEXT: llvm.return [[add]]
-}
-
-// -----
-
 // CHECK-LABEL: func @ceilf(
 // CHECK-SAME: f32
 func @ceilf(%arg0 : f32) {
   // CHECK: "llvm.intr.ceil"(%arg0) : (f32) -> f32
   %0 = math.ceil %arg0 : f32
   std.return
 }
 

mlir/test/Dialect/MemRef/invalid.mlir

 
 // -----
 
 func @atomic_rmw_expects_int(%I: memref<16x10xf32>, %i : index, %val : f32) {
   // expected-error@+1 {{expects an integer type}}
   %x = memref.atomic_rmw addi %val, %I[%i, %i] : (f32, memref<16x10xf32>) -> f32
   return
 }
+
+// -----
+
+func @generic_atomic_rmw_wrong_arg_num(%I: memref<10xf32>, %i : index) {
+  // expected-error@+1 {{expected single number of entry block arguments}}
+  %x = memref.generic_atomic_rmw %I[%i] : memref<10xf32> {
+    ^bb0(%arg0 : f32, %arg1 : f32):
+      %c1 = arith.constant 1.0 : f32
+      memref.atomic_yield %c1 : f32
+  }
+  return
+}
+
+// -----
+
+func @generic_atomic_rmw_wrong_arg_type(%I: memref<10xf32>, %i : index) {
+  // expected-error@+1 {{expected block argument of the same type result type}}
+  %x = memref.generic_atomic_rmw %I[%i] : memref<10xf32> {
+    ^bb0(%old_value : i32):
+      %c1 = arith.constant 1.0 : f32
+      memref.atomic_yield %c1 : f32
+  }
+  return
+}
+
+// -----
+
+func @generic_atomic_rmw_result_type_mismatch(%I: memref<10xf32>, %i : index) {
+ // expected-error@+1 {{failed to verify that result type matches element type of memref}}
+ %0 = "memref.generic_atomic_rmw"(%I, %i) ({
+    ^bb0(%old_value: f32):
+      %c1 = arith.constant 1.0 : f32
+      memref.atomic_yield %c1 : f32
+    }) : (memref<10xf32>, index) -> i32
+  return
+}
+
+// -----
+
+func @generic_atomic_rmw_has_side_effects(%I: memref<10xf32>, %i : index) {
+  // expected-error@+4 {{should contain only operations with no side effects}}
+  %x = memref.generic_atomic_rmw %I[%i] : memref<10xf32> {
+    ^bb0(%old_value : f32):
+      %c1 = arith.constant 1.0 : f32
+      %buf = memref.alloc() : memref<2048xf32>
+      memref.atomic_yield %c1 : f32
+  }
+}
+
+// -----
+
+func @atomic_yield_type_mismatch(%I: memref<10xf32>, %i : index) {
+  // expected-error@+4 {{op types mismatch between yield op: 'i32' and its parent: 'f32'}}
+  %x = memref.generic_atomic_rmw %I[%i] : memref<10xf32> {
+    ^bb0(%old_value : f32):
+      %c1 = arith.constant 1 : i32
+      memref.atomic_yield %c1 : i32
+  }
+  return
+}

mlir/test/Dialect/MemRef/ops.mlir

 
 // CHECK-LABEL: func @atomic_rmw
 // CHECK-SAME: ([[BUF:%.*]]: memref<10xf32>, [[VAL:%.*]]: f32, [[I:%.*]]: index)
 func @atomic_rmw(%I: memref<10xf32>, %val: f32, %i : index) {
   %x = memref.atomic_rmw addf %val, %I[%i] : (f32, memref<10xf32>) -> f32
   // CHECK: memref.atomic_rmw addf [[VAL]], [[BUF]]{{\[}}[[I]]]
   return
 }
+
+// CHECK-LABEL: func @generic_atomic_rmw
+// CHECK-SAME: ([[BUF:%.*]]: memref<1x2xf32>, [[I:%.*]]: index, [[J:%.*]]: index)
+func @generic_atomic_rmw(%I: memref<1x2xf32>, %i : index, %j : index) {
+  %x = memref.generic_atomic_rmw %I[%i, %j] : memref<1x2xf32> {
+  // CHECK-NEXT: memref.generic_atomic_rmw [[BUF]]{{\[}}[[I]], [[J]]] : memref
+    ^bb0(%old_value : f32):
+      %c1 = arith.constant 1.0 : f32
+      %out = arith.addf %c1, %old_value : f32
+      memref.atomic_yield %out : f32
+  // CHECK: index_attr = 8 : index
+  } { index_attr = 8 : index }
+  return
+}

mlir/test/Dialect/Standard/expand-ops.mlir

 // RUN: mlir-opt -std-expand %s -split-input-file | FileCheck %s
 
 // CHECK-LABEL: func @atomic_rmw_to_generic
 // CHECK-SAME: ([[F:%.*]]: memref<10xf32>, [[f:%.*]]: f32, [[i:%.*]]: index)
 func @atomic_rmw_to_generic(%F: memref<10xf32>, %f: f32, %i: index) -> f32 {
   %x = memref.atomic_rmw maxf %f, %F[%i] : (f32, memref<10xf32>) -> f32
   return %x : f32
 }
-// CHECK: %0 = generic_atomic_rmw %arg0[%arg2] : memref<10xf32> {
+// CHECK: %0 = memref.generic_atomic_rmw %arg0[%arg2] : memref<10xf32> {
 // CHECK: ^bb0([[CUR_VAL:%.*]]: f32):
 // CHECK:   [[CMP:%.*]] = arith.cmpf ogt, [[CUR_VAL]], [[f]] : f32
 // CHECK:   [[SELECT:%.*]] = select [[CMP]], [[CUR_VAL]], [[f]] : f32
-// CHECK:   atomic_yield [[SELECT]] : f32
+// CHECK:   memref.atomic_yield [[SELECT]] : f32
 // CHECK: }
 // CHECK: return %0 : f32
 
 // -----
 
 // CHECK-LABEL: func @atomic_rmw_no_conversion
 func @atomic_rmw_no_conversion(%F: memref<10xf32>, %f: f32, %i: index) -> f32 {
   %x = memref.atomic_rmw addf %f, %F[%i] : (f32, memref<10xf32>) -> f32

mlir/test/IR/core-ops.mlir

 func @unranked_tensor_load_store(%0 : memref<*xi32>, %1 : tensor<*xi32>) {
   // CHECK-SAME: (%[[MEMREF:.*]]: memref<*xi32>,
   // CHECK-SAME:  %[[TENSOR:.*]]: tensor<*xi32>)
   // CHECK: memref.tensor_store %[[TENSOR]], %[[MEMREF]] : memref<*xi32>
   memref.tensor_store %1, %0 : memref<*xi32>
   return
 }
 
-// CHECK-LABEL: func @generic_atomic_rmw
-// CHECK-SAME: ([[BUF:%.*]]: memref<1x2xf32>, [[I:%.*]]: index, [[J:%.*]]: index)
-func @generic_atomic_rmw(%I: memref<1x2xf32>, %i : index, %j : index) {
-  %x = generic_atomic_rmw %I[%i, %j] : memref<1x2xf32> {
-  // CHECK-NEXT: generic_atomic_rmw [[BUF]]{{\[}}[[I]], [[J]]] : memref
-    ^bb0(%old_value : f32):
-      %c1 = arith.constant 1.0 : f32
-      %out = arith.addf %c1, %old_value : f32
-      atomic_yield %out : f32
-  // CHECK: index_attr = 8 : index
-  } { index_attr = 8 : index }
-  return
-}
-
 // CHECK-LABEL: func @assume_alignment
 // CHECK-SAME: %[[MEMREF:.*]]: memref<4x4xf16>
 func @assume_alignment(%0: memref<4x4xf16>) {
   // CHECK: memref.assume_alignment %[[MEMREF]], 16 : memref<4x4xf16>
   memref.assume_alignment %0, 16 : memref<4x4xf16>
   return
 }

mlir/test/IR/invalid-ops.mlir

 
 // -----
 
 func @invalid_splat(%v : f32) { // expected-note {{prior use here}}
   vector.splat %v : vector<8xf64>
   // expected-error@-1 {{expects different type than prior uses}}
   return
 }
-
-// -----
-
-func @generic_atomic_rmw_wrong_arg_num(%I: memref<10xf32>, %i : index) {
-  // expected-error@+1 {{expected single number of entry block arguments}}
-  %x = generic_atomic_rmw %I[%i] : memref<10xf32> {
-    ^bb0(%arg0 : f32, %arg1 : f32):
-      %c1 = arith.constant 1.0 : f32
-      atomic_yield %c1 : f32
-  }
-  return
-}
-
-// -----
-
-func @generic_atomic_rmw_wrong_arg_type(%I: memref<10xf32>, %i : index) {
-  // expected-error@+1 {{expected block argument of the same type result type}}
-  %x = generic_atomic_rmw %I[%i] : memref<10xf32> {
-    ^bb0(%old_value : i32):
-      %c1 = arith.constant 1.0 : f32
-      atomic_yield %c1 : f32
-  }
-  return
-}
-
-// -----
-
-func @generic_atomic_rmw_result_type_mismatch(%I: memref<10xf32>, %i : index) {
- // expected-error@+1 {{failed to verify that result type matches element type of memref}}
- %0 = "std.generic_atomic_rmw"(%I, %i) ({
-    ^bb0(%old_value: f32):
-      %c1 = arith.constant 1.0 : f32
-      atomic_yield %c1 : f32
-    }) : (memref<10xf32>, index) -> i32
-  return
-}
-
-// -----
-
-func @generic_atomic_rmw_has_side_effects(%I: memref<10xf32>, %i : index) {
-  // expected-error@+4 {{should contain only operations with no side effects}}
-  %x = generic_atomic_rmw %I[%i] : memref<10xf32> {
-    ^bb0(%old_value : f32):
-      %c1 = arith.constant 1.0 : f32
-      %buf = memref.alloc() : memref<2048xf32>
-      atomic_yield %c1 : f32
-  }
-}
-
-// -----
-
-func @atomic_yield_type_mismatch(%I: memref<10xf32>, %i : index) {
-  // expected-error@+4 {{op types mismatch between yield op: 'i32' and its parent: 'f32'}}
-  %x = generic_atomic_rmw %I[%i] : memref<10xf32> {
-    ^bb0(%old_value : f32):
-      %c1 = arith.constant 1 : i32
-      atomic_yield %c1 : i32
-  }
-  return
-}