49 lines
1.6 KiB
C++
49 lines
1.6 KiB
C++
//===- MachineFloatingPointPredicateUtils.cpp -----------------------------===//
|
|
//
|
|
// 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 "llvm/CodeGen/GlobalISel/MachineFloatingPointPredicateUtils.h"
|
|
#include "llvm/CodeGen/GlobalISel/MIPatternMatch.h"
|
|
#include "llvm/CodeGen/LowLevelTypeUtils.h"
|
|
#include "llvm/CodeGen/MachineRegisterInfo.h"
|
|
#include "llvm/CodeGen/MachineSSAContext.h"
|
|
#include "llvm/IR/Constants.h"
|
|
#include <optional>
|
|
|
|
namespace llvm {
|
|
|
|
using namespace MIPatternMatch;
|
|
|
|
template <>
|
|
DenormalMode
|
|
MachineFloatingPointPredicateUtils::queryDenormalMode(const MachineFunction &MF,
|
|
Register Val) {
|
|
const MachineRegisterInfo &MRI = MF.getRegInfo();
|
|
LLT Ty = MRI.getType(Val).getScalarType();
|
|
return MF.getDenormalMode(getFltSemanticForLLT(Ty));
|
|
}
|
|
|
|
template <>
|
|
bool MachineFloatingPointPredicateUtils::lookThroughFAbs(
|
|
const MachineFunction &MF, Register LHS, Register &Src) {
|
|
const MachineRegisterInfo &MRI = MF.getRegInfo();
|
|
return mi_match(LHS, MRI, m_GFabs(m_Reg(Src)));
|
|
}
|
|
|
|
template <>
|
|
std::optional<APFloat> MachineFloatingPointPredicateUtils::matchConstantFloat(
|
|
const MachineFunction &MF, Register Val) {
|
|
const MachineRegisterInfo &MRI = MF.getRegInfo();
|
|
const ConstantFP *ConstVal;
|
|
if (mi_match(Val, MRI, m_GFCst(ConstVal)))
|
|
return ConstVal->getValueAPF();
|
|
|
|
return std::nullopt;
|
|
}
|
|
|
|
} // namespace llvm
|