1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
//===- GPUOpsLowering.h - GPU FuncOp / ReturnOp lowering -------*- C++ -*--===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef MLIR_CONVERSION_GPUCOMMON_GPUOPSLOWERING_H_
#define MLIR_CONVERSION_GPUCOMMON_GPUOPSLOWERING_H_
#include "mlir/Conversion/LLVMCommon/Pattern.h"
#include "mlir/Dialect/GPU/IR/GPUDialect.h"
#include "mlir/Dialect/LLVMIR/LLVMDialect.h"
namespace mlir {
struct GPUFuncOpLowering : ConvertOpToLLVMPattern<gpu::GPUFuncOp> {
GPUFuncOpLowering(LLVMTypeConverter &converter, unsigned allocaAddrSpace,
StringAttr kernelAttributeName)
: ConvertOpToLLVMPattern<gpu::GPUFuncOp>(converter),
allocaAddrSpace(allocaAddrSpace),
kernelAttributeName(kernelAttributeName) {}
LogicalResult
matchAndRewrite(gpu::GPUFuncOp gpuFuncOp, OpAdaptor adaptor,
ConversionPatternRewriter &rewriter) const override;
private:
/// The address spcae to use for `alloca`s in private memory.
unsigned allocaAddrSpace;
/// The attribute name to use instead of `gpu.kernel`.
StringAttr kernelAttributeName;
};
/// The lowering of gpu.printf to a call to HIP hostcalls
///
/// Simplifies llvm/lib/Transforms/Utils/AMDGPUEmitPrintf.cpp, as we don't have
/// to deal with %s (even if there were first-class strings in MLIR, they're not
/// legal input to gpu.printf) or non-constant format strings
struct GPUPrintfOpToHIPLowering : public ConvertOpToLLVMPattern<gpu::PrintfOp> {
using ConvertOpToLLVMPattern<gpu::PrintfOp>::ConvertOpToLLVMPattern;
LogicalResult
matchAndRewrite(gpu::PrintfOp gpuPrintfOp, gpu::PrintfOpAdaptor adaptor,
ConversionPatternRewriter &rewriter) const override;
};
/// The lowering of gpu.printf to a call to an external printf() function
///
/// This pass will add a declaration of printf() to the GPUModule if needed
/// and seperate out the format strings into global constants. For some
/// runtimes, such as OpenCL on AMD, this is sufficient setup, as the compiler
/// will lower printf calls to appropriate device-side code
struct GPUPrintfOpToLLVMCallLowering
: public ConvertOpToLLVMPattern<gpu::PrintfOp> {
GPUPrintfOpToLLVMCallLowering(LLVMTypeConverter &converter,
int addressSpace = 0)
: ConvertOpToLLVMPattern<gpu::PrintfOp>(converter),
addressSpace(addressSpace) {}
LogicalResult
matchAndRewrite(gpu::PrintfOp gpuPrintfOp, gpu::PrintfOpAdaptor adaptor,
ConversionPatternRewriter &rewriter) const override;
private:
int addressSpace;
};
struct GPUReturnOpLowering : public ConvertOpToLLVMPattern<gpu::ReturnOp> {
using ConvertOpToLLVMPattern<gpu::ReturnOp>::ConvertOpToLLVMPattern;
LogicalResult
matchAndRewrite(gpu::ReturnOp op, OpAdaptor adaptor,
ConversionPatternRewriter &rewriter) const override {
rewriter.replaceOpWithNewOp<LLVM::ReturnOp>(op, adaptor.getOperands());
return success();
}
};
} // namespace mlir
#endif // MLIR_CONVERSION_GPUCOMMON_GPUOPSLOWERING_H_
|
