42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
//===- FloatingPointPredicateUtils.cpp ------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/FloatingPointPredicateUtils.h"
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#include "llvm/IR/PatternMatch.h"
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#include <optional>
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namespace llvm {
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using namespace PatternMatch;
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template <>
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DenormalMode FloatingPointPredicateUtils::queryDenormalMode(const Function &F,
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Value *Val) {
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Type *Ty = Val->getType()->getScalarType();
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return F.getDenormalMode(Ty->getFltSemantics());
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}
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template <>
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bool FloatingPointPredicateUtils::lookThroughFAbs(const Function &F, Value *LHS,
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Value *&Src) {
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return match(LHS, m_FAbs(m_Value(Src)));
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}
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template <>
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std::optional<APFloat>
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FloatingPointPredicateUtils::matchConstantFloat(const Function &F, Value *Val) {
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const APFloat *ConstVal;
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if (!match(Val, m_APFloatAllowPoison(ConstVal)))
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return std::nullopt;
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return *ConstVal;
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}
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} // namespace llvm
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