50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
//===-- RegisterValue.cpp ---------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "RegisterValue.h"
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#include "llvm/ADT/APFloat.h"
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namespace exegesis {
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static llvm::APFloat getFloatValue(const llvm::fltSemantics &FltSemantics,
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PredefinedValues Value) {
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switch (Value) {
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case PredefinedValues::POS_ZERO:
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return llvm::APFloat::getZero(FltSemantics);
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case PredefinedValues::NEG_ZERO:
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return llvm::APFloat::getZero(FltSemantics, true);
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case PredefinedValues::ONE:
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return llvm::APFloat(FltSemantics, "1");
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case PredefinedValues::TWO:
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return llvm::APFloat(FltSemantics, "2");
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case PredefinedValues::INF:
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return llvm::APFloat::getInf(FltSemantics);
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case PredefinedValues::QNAN:
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return llvm::APFloat::getQNaN(FltSemantics);
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case PredefinedValues::SMALLEST_NORM:
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return llvm::APFloat::getSmallestNormalized(FltSemantics);
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case PredefinedValues::LARGEST:
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return llvm::APFloat::getLargest(FltSemantics);
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case PredefinedValues::ULP:
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return llvm::APFloat::getSmallest(FltSemantics);
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case PredefinedValues::ONE_PLUS_ULP:
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auto Output = getFloatValue(FltSemantics, PredefinedValues::ONE);
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Output.next(false);
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return Output;
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}
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llvm_unreachable("Unhandled exegesis::PredefinedValues");
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}
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llvm::APInt bitcastFloatValue(const llvm::fltSemantics &FltSemantics,
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PredefinedValues Value) {
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return getFloatValue(FltSemantics, Value).bitcastToAPInt();
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}
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} // namespace exegesis
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