1//===- AttrToLLVMConverter.cpp - Arith attributes conversion to LLVM ------===//
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/ArithCommon/AttrToLLVMConverter.h"
10
11using namespace mlir;
12
13LLVM::FastmathFlags
14mlir::arith::convertArithFastMathFlagsToLLVM(arith::FastMathFlags arithFMF) {
15 LLVM::FastmathFlags llvmFMF{};
16 const std::pair<arith::FastMathFlags, LLVM::FastmathFlags> flags[] = {
17 {arith::FastMathFlags::nnan, LLVM::FastmathFlags::nnan},
18 {arith::FastMathFlags::ninf, LLVM::FastmathFlags::ninf},
19 {arith::FastMathFlags::nsz, LLVM::FastmathFlags::nsz},
20 {arith::FastMathFlags::arcp, LLVM::FastmathFlags::arcp},
21 {arith::FastMathFlags::contract, LLVM::FastmathFlags::contract},
22 {arith::FastMathFlags::afn, LLVM::FastmathFlags::afn},
23 {arith::FastMathFlags::reassoc, LLVM::FastmathFlags::reassoc}};
24 for (auto [arithFlag, llvmFlag] : flags) {
25 if (bitEnumContainsAny(arithFMF, arithFlag))
26 llvmFMF = llvmFMF | llvmFlag;
27 }
28 return llvmFMF;
29}
30
31LLVM::FastmathFlagsAttr
32mlir::arith::convertArithFastMathAttrToLLVM(arith::FastMathFlagsAttr fmfAttr) {
33 arith::FastMathFlags arithFMF = fmfAttr.getValue();
34 return LLVM::FastmathFlagsAttr::get(
35 fmfAttr.getContext(), convertArithFastMathFlagsToLLVM(arithFMF));
36}
37
38LLVM::IntegerOverflowFlags mlir::arith::convertArithOverflowFlagsToLLVM(
39 arith::IntegerOverflowFlags arithFlags) {
40 LLVM::IntegerOverflowFlags llvmFlags{};
41 const std::pair<arith::IntegerOverflowFlags, LLVM::IntegerOverflowFlags>
42 flags[] = {
43 {arith::IntegerOverflowFlags::nsw, LLVM::IntegerOverflowFlags::nsw},
44 {arith::IntegerOverflowFlags::nuw, LLVM::IntegerOverflowFlags::nuw}};
45 for (auto [arithFlag, llvmFlag] : flags) {
46 if (bitEnumContainsAny(arithFlags, arithFlag))
47 llvmFlags = llvmFlags | llvmFlag;
48 }
49 return llvmFlags;
50}
51
52LLVM::RoundingMode
53mlir::arith::convertArithRoundingModeToLLVM(arith::RoundingMode roundingMode) {
54 switch (roundingMode) {
55 case arith::RoundingMode::downward:
56 return LLVM::RoundingMode::TowardNegative;
57 case arith::RoundingMode::to_nearest_away:
58 return LLVM::RoundingMode::NearestTiesToAway;
59 case arith::RoundingMode::to_nearest_even:
60 return LLVM::RoundingMode::NearestTiesToEven;
61 case arith::RoundingMode::toward_zero:
62 return LLVM::RoundingMode::TowardZero;
63 case arith::RoundingMode::upward:
64 return LLVM::RoundingMode::TowardPositive;
65 }
66 llvm_unreachable("Unhandled rounding mode");
67}
68
69LLVM::RoundingModeAttr mlir::arith::convertArithRoundingModeAttrToLLVM(
70 arith::RoundingModeAttr roundingModeAttr) {
71 assert(roundingModeAttr && "Expecting valid attribute");
72 return LLVM::RoundingModeAttr::get(
73 roundingModeAttr.getContext(),
74 convertArithRoundingModeToLLVM(roundingModeAttr.getValue()));
75}
76
77LLVM::FPExceptionBehaviorAttr
78mlir::arith::getLLVMDefaultFPExceptionBehavior(MLIRContext &context) {
79 return LLVM::FPExceptionBehaviorAttr::get(&context,
80 LLVM::FPExceptionBehavior::Ignore);
81}
82

source code of mlir/lib/Conversion/ArithCommon/AttrToLLVMConverter.cpp