1//===-- MathToROCDL.cpp - conversion from Math to rocdl calls -------------===//
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
9#include "mlir/Conversion/MathToROCDL/MathToROCDL.h"
10#include "mlir/Conversion/LLVMCommon/LoweringOptions.h"
11#include "mlir/Conversion/LLVMCommon/TypeConverter.h"
12#include "mlir/Dialect/Func/IR/FuncOps.h"
13#include "mlir/Dialect/LLVMIR/LLVMDialect.h"
14#include "mlir/Dialect/LLVMIR/ROCDLDialect.h"
15#include "mlir/Dialect/Math/IR/Math.h"
16#include "mlir/Dialect/Utils/IndexingUtils.h"
17#include "mlir/Dialect/Vector/IR/VectorOps.h"
18#include "mlir/IR/BuiltinDialect.h"
19#include "mlir/IR/PatternMatch.h"
20#include "mlir/Pass/Pass.h"
21#include "mlir/Transforms/DialectConversion.h"
22
23#include "../GPUCommon/GPUOpsLowering.h"
24#include "../GPUCommon/IndexIntrinsicsOpLowering.h"
25#include "../GPUCommon/OpToFuncCallLowering.h"
26#include "mlir/Conversion/GPUCommon/GPUCommonPass.h"
27
28namespace mlir {
29#define GEN_PASS_DEF_CONVERTMATHTOROCDL
30#include "mlir/Conversion/Passes.h.inc"
31} // namespace mlir
32
33using namespace mlir;
34
35#define DEBUG_TYPE "math-to-rocdl"
36#define DBGS() (llvm::dbgs() << "[" DEBUG_TYPE "]: ")
37
38template <typename OpTy>
39static void populateOpPatterns(const LLVMTypeConverter &converter,
40 RewritePatternSet &patterns, StringRef f32Func,
41 StringRef f64Func, StringRef f16Func,
42 StringRef f32ApproxFunc = "") {
43 patterns.add<ScalarizeVectorOpLowering<OpTy>>(converter);
44 patterns.add<OpToFuncCallLowering<OpTy>>(converter, f32Func, f64Func,
45 f32ApproxFunc, f16Func);
46}
47
48void mlir::populateMathToROCDLConversionPatterns(
49 const LLVMTypeConverter &converter, RewritePatternSet &patterns) {
50 // Handled by mathToLLVM: math::AbsIOp
51 // Handled by mathToLLVM: math::AbsFOp
52 // Handled by mathToLLVM: math::CopySignOp
53 // Handled by mathToLLVM: math::CountLeadingZerosOp
54 // Handled by mathToLLVM: math::CountTrailingZerosOp
55 // Handled by mathToLLVM: math::CgPopOp
56 // Handled by mathToLLVM: math::ExpOp (32-bit only)
57 // Handled by mathToLLVM: math::FmaOp
58 // Handled by mathToLLVM: math::LogOp (32-bit only)
59 // FIXME: math::IPowIOp
60 // Handled by mathToLLVM: math::RoundEvenOp
61 // Handled by mathToLLVM: math::RoundOp
62 // Handled by mathToLLVM: math::SqrtOp
63 // Handled by mathToLLVM: math::TruncOp
64 populateOpPatterns<math::AcosOp>(converter, patterns, "__ocml_acos_f32",
65 "__ocml_acos_f64", "__ocml_acos_f16");
66 populateOpPatterns<math::AcoshOp>(converter, patterns, "__ocml_acosh_f32",
67 "__ocml_acosh_f64", "__ocml_acosh_f16");
68 populateOpPatterns<math::AsinOp>(converter, patterns, "__ocml_asin_f32",
69 "__ocml_asin_f64", "__ocml_asin_f16");
70 populateOpPatterns<math::AsinhOp>(converter, patterns, "__ocml_asinh_f32",
71 "__ocml_asinh_f64", "__ocml_asinh_f16");
72 populateOpPatterns<math::AtanOp>(converter, patterns, "__ocml_atan_f32",
73 "__ocml_atan_f64", "__ocml_atan_f16");
74 populateOpPatterns<math::AtanhOp>(converter, patterns, "__ocml_atanh_f32",
75 "__ocml_atanh_f64", "__ocml_atanh_f16");
76 populateOpPatterns<math::Atan2Op>(converter, patterns, "__ocml_atan2_f32",
77 "__ocml_atan2_f64", "__ocml_atan2_f16");
78 populateOpPatterns<math::CbrtOp>(converter, patterns, "__ocml_cbrt_f32",
79 "__ocml_cbrt_f64", "__ocml_cbrt_f16");
80 populateOpPatterns<math::CeilOp>(converter, patterns, "__ocml_ceil_f32",
81 "__ocml_ceil_f64", "__ocml_ceil_f16");
82 populateOpPatterns<math::CosOp>(converter, patterns, "__ocml_cos_f32",
83 "__ocml_cos_f64", "__ocml_cos_f16");
84 populateOpPatterns<math::CoshOp>(converter, patterns, "__ocml_cosh_f32",
85 "__ocml_cosh_f64", "__ocml_cosh_f16");
86 populateOpPatterns<math::SinhOp>(converter, patterns, "__ocml_sinh_f32",
87 "__ocml_sinh_f64", "__ocml_sinh_f16");
88 populateOpPatterns<math::ExpOp>(converter, patterns, "", "__ocml_exp_f64",
89 "__ocml_exp_f16");
90 populateOpPatterns<math::Exp2Op>(converter, patterns, "__ocml_exp2_f32",
91 "__ocml_exp2_f64", "__ocml_exp2_f16");
92 populateOpPatterns<math::ExpM1Op>(converter, patterns, "__ocml_expm1_f32",
93 "__ocml_expm1_f64", "__ocml_expm1_f16");
94 populateOpPatterns<math::FloorOp>(converter, patterns, "__ocml_floor_f32",
95 "__ocml_floor_f64", "__ocml_floor_f16");
96 populateOpPatterns<math::LogOp>(converter, patterns, "", "__ocml_log_f64",
97 "__ocml_log_f16");
98 populateOpPatterns<math::Log10Op>(converter, patterns, "__ocml_log10_f32",
99 "__ocml_log10_f64", "__ocml_log10_f16");
100 populateOpPatterns<math::Log1pOp>(converter, patterns, "__ocml_log1p_f32",
101 "__ocml_log1p_f64", "__ocml_log1p_f16");
102 populateOpPatterns<math::Log2Op>(converter, patterns, "__ocml_log2_f32",
103 "__ocml_log2_f64", "__ocml_log2_f16");
104 populateOpPatterns<math::PowFOp>(converter, patterns, "__ocml_pow_f32",
105 "__ocml_pow_f64", "__ocml_pow_f16");
106 populateOpPatterns<math::RsqrtOp>(converter, patterns, "__ocml_rsqrt_f32",
107 "__ocml_rsqrt_f64", "__ocml_rsqrt_f16");
108 populateOpPatterns<math::SinOp>(converter, patterns, "__ocml_sin_f32",
109 "__ocml_sin_f64", "__ocml_sin_f16");
110 populateOpPatterns<math::TanhOp>(converter, patterns, "__ocml_tanh_f32",
111 "__ocml_tanh_f64", "__ocml_tanh_f16");
112 populateOpPatterns<math::TanOp>(converter, patterns, "__ocml_tan_f32",
113 "__ocml_tan_f64", "__ocml_tan_f16");
114 populateOpPatterns<math::ErfOp>(converter, patterns, "__ocml_erf_f32",
115 "__ocml_erf_f64", "__ocml_erf_f16");
116 populateOpPatterns<math::ErfcOp>(converter, patterns, "__ocml_erfc_f32",
117 "__ocml_erfc_f64", "__ocml_erfc_f16");
118 populateOpPatterns<math::FPowIOp>(converter, patterns, "__ocml_pown_f32",
119 "__ocml_pown_f64", "__ocml_pown_f16");
120 // Single arith pattern that needs a ROCDL call, probably not
121 // worth creating a separate pass for it.
122 populateOpPatterns<arith::RemFOp>(converter, patterns, "__ocml_fmod_f32",
123 "__ocml_fmod_f64", "__ocml_fmod_f16");
124}
125
126namespace {
127struct ConvertMathToROCDLPass
128 : public impl::ConvertMathToROCDLBase<ConvertMathToROCDLPass> {
129 ConvertMathToROCDLPass() = default;
130 void runOnOperation() override;
131};
132} // namespace
133
134void ConvertMathToROCDLPass::runOnOperation() {
135 auto m = getOperation();
136 MLIRContext *ctx = m.getContext();
137
138 RewritePatternSet patterns(&getContext());
139 LowerToLLVMOptions options(ctx, DataLayout(m));
140 LLVMTypeConverter converter(ctx, options);
141 populateMathToROCDLConversionPatterns(converter, patterns);
142 ConversionTarget target(getContext());
143 target.addLegalDialect<BuiltinDialect, func::FuncDialect,
144 vector::VectorDialect, LLVM::LLVMDialect>();
145 target.addIllegalOp<LLVM::CosOp, LLVM::ExpOp, LLVM::Exp2Op, LLVM::FAbsOp,
146 LLVM::FCeilOp, LLVM::FFloorOp, LLVM::FRemOp, LLVM::LogOp,
147 LLVM::Log10Op, LLVM::Log2Op, LLVM::PowOp, LLVM::SinOp,
148 LLVM::SqrtOp>();
149 if (failed(applyPartialConversion(m, target, std::move(patterns))))
150 signalPassFailure();
151}
152

source code of mlir/lib/Conversion/MathToROCDL/MathToROCDL.cpp