82 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9#include "mlir/Conversion/ArithCommon/AttrToLLVMConverter.h"10 11using namespace mlir;12 13LLVM::FastmathFlags14mlir::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::FastmathFlagsAttr32mlir::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::RoundingMode53mlir::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::FPExceptionBehaviorAttr78mlir::arith::getLLVMDefaultFPExceptionBehavior(MLIRContext &context) {79 return LLVM::FPExceptionBehaviorAttr::get(&context,80 LLVM::FPExceptionBehavior::Ignore);81}82