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//===- AttrToLLVMConverter.cpp - Arith attributes conversion to LLVM ------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "mlir/Conversion/ArithCommon/AttrToLLVMConverter.h"
using namespace mlir;
LLVM::FastmathFlags
mlir::arith::convertArithFastMathFlagsToLLVM(arith::FastMathFlags arithFMF) {
LLVM::FastmathFlags llvmFMF{};
const std::pair<arith::FastMathFlags, LLVM::FastmathFlags> flags[] = {
{arith::FastMathFlags::nnan, LLVM::FastmathFlags::nnan},
{arith::FastMathFlags::ninf, LLVM::FastmathFlags::ninf},
{arith::FastMathFlags::nsz, LLVM::FastmathFlags::nsz},
{arith::FastMathFlags::arcp, LLVM::FastmathFlags::arcp},
{arith::FastMathFlags::contract, LLVM::FastmathFlags::contract},
{arith::FastMathFlags::afn, LLVM::FastmathFlags::afn},
{arith::FastMathFlags::reassoc, LLVM::FastmathFlags::reassoc}};
for (auto [arithFlag, llvmFlag] : flags) {
if (bitEnumContainsAny(arithFMF, arithFlag))
llvmFMF = llvmFMF | llvmFlag;
}
return llvmFMF;
}
LLVM::FastmathFlagsAttr
mlir::arith::convertArithFastMathAttrToLLVM(arith::FastMathFlagsAttr fmfAttr) {
arith::FastMathFlags arithFMF = fmfAttr.getValue();
return LLVM::FastmathFlagsAttr::get(
fmfAttr.getContext(), convertArithFastMathFlagsToLLVM(arithFMF));
}
LLVM::IntegerOverflowFlags mlir::arith::convertArithOverflowFlagsToLLVM(
arith::IntegerOverflowFlags arithFlags) {
LLVM::IntegerOverflowFlags llvmFlags{};
const std::pair<arith::IntegerOverflowFlags, LLVM::IntegerOverflowFlags>
flags[] = {
{arith::IntegerOverflowFlags::nsw, LLVM::IntegerOverflowFlags::nsw},
{arith::IntegerOverflowFlags::nuw, LLVM::IntegerOverflowFlags::nuw}};
for (auto [arithFlag, llvmFlag] : flags) {
if (bitEnumContainsAny(arithFlags, arithFlag))
llvmFlags = llvmFlags | llvmFlag;
}
return llvmFlags;
}
LLVM::RoundingMode
mlir::arith::convertArithRoundingModeToLLVM(arith::RoundingMode roundingMode) {
switch (roundingMode) {
case arith::RoundingMode::downward:
return LLVM::RoundingMode::TowardNegative;
case arith::RoundingMode::to_nearest_away:
return LLVM::RoundingMode::NearestTiesToAway;
case arith::RoundingMode::to_nearest_even:
return LLVM::RoundingMode::NearestTiesToEven;
case arith::RoundingMode::toward_zero:
return LLVM::RoundingMode::TowardZero;
case arith::RoundingMode::upward:
return LLVM::RoundingMode::TowardPositive;
}
llvm_unreachable("Unhandled rounding mode");
}
LLVM::RoundingModeAttr mlir::arith::convertArithRoundingModeAttrToLLVM(
arith::RoundingModeAttr roundingModeAttr) {
assert(roundingModeAttr && "Expecting valid attribute");
return LLVM::RoundingModeAttr::get(
roundingModeAttr.getContext(),
convertArithRoundingModeToLLVM(roundingModeAttr.getValue()));
}
LLVM::FPExceptionBehaviorAttr
mlir::arith::getLLVMDefaultFPExceptionBehavior(MLIRContext &context) {
return LLVM::FPExceptionBehaviorAttr::get(&context,
LLVM::FPExceptionBehavior::Ignore);
}
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