1 //===- GPUOpsLowering.h - GPU FuncOp / ReturnOp lowering -------*- C++ -*--===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 #ifndef MLIR_CONVERSION_GPUCOMMON_GPUOPSLOWERING_H_
9 #define MLIR_CONVERSION_GPUCOMMON_GPUOPSLOWERING_H_
10 
11 #include "mlir/Conversion/StandardToLLVM/ConvertStandardToLLVM.h"
12 #include "mlir/Dialect/GPU/GPUDialect.h"
13 #include "mlir/Dialect/LLVMIR/LLVMDialect.h"
14 
15 namespace mlir {
16 
17 struct GPUFuncOpLowering : ConvertOpToLLVMPattern<gpu::GPUFuncOp> {
18   GPUFuncOpLowering(LLVMTypeConverter &converter, unsigned allocaAddrSpace,
19                     Identifier kernelAttributeName)
20       : ConvertOpToLLVMPattern<gpu::GPUFuncOp>(converter),
21         allocaAddrSpace(allocaAddrSpace),
22         kernelAttributeName(kernelAttributeName) {}
23 
24   LogicalResult
25   matchAndRewrite(gpu::GPUFuncOp gpuFuncOp, ArrayRef<Value> operands,
26                   ConversionPatternRewriter &rewriter) const override;
27 
28 private:
29   /// The address spcae to use for `alloca`s in private memory.
30   unsigned allocaAddrSpace;
31 
32   /// The attribute name to use instead of `gpu.kernel`.
33   Identifier kernelAttributeName;
34 };
35 
36 struct GPUReturnOpLowering : public ConvertOpToLLVMPattern<gpu::ReturnOp> {
37   using ConvertOpToLLVMPattern<gpu::ReturnOp>::ConvertOpToLLVMPattern;
38 
39   LogicalResult
40   matchAndRewrite(gpu::ReturnOp op, ArrayRef<Value> operands,
41                   ConversionPatternRewriter &rewriter) const override {
42     rewriter.replaceOpWithNewOp<LLVM::ReturnOp>(op, operands);
43     return success();
44   }
45 };
46 
47 } // namespace mlir
48 
49 #endif // MLIR_CONVERSION_GPUCOMMON_GPUOPSLOWERING_H_
50