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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351636 91177308-0d34-0410-b5e6-96231b3b80d8
51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
//===-- Float2Int.h - Demote floating point ops to work on integers -------===//
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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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//
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// This file provides the Float2Int pass, which aims to demote floating
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// point operations to work on integers, where that is losslessly possible.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_SCALAR_FLOAT2INT_H
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#define LLVM_TRANSFORMS_SCALAR_FLOAT2INT_H
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#include "llvm/ADT/EquivalenceClasses.h"
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#include "llvm/ADT/MapVector.h"
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#include "llvm/IR/ConstantRange.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/PassManager.h"
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namespace llvm {
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class Float2IntPass : public PassInfoMixin<Float2IntPass> {
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public:
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PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
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// Glue for old PM.
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bool runImpl(Function &F);
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private:
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void findRoots(Function &F, SmallPtrSet<Instruction *, 8> &Roots);
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void seen(Instruction *I, ConstantRange R);
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ConstantRange badRange();
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ConstantRange unknownRange();
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ConstantRange validateRange(ConstantRange R);
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void walkBackwards(const SmallPtrSetImpl<Instruction *> &Roots);
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void walkForwards();
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bool validateAndTransform();
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Value *convert(Instruction *I, Type *ToTy);
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void cleanup();
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MapVector<Instruction *, ConstantRange> SeenInsts;
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SmallPtrSet<Instruction *, 8> Roots;
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EquivalenceClasses<Instruction *> ECs;
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MapVector<Instruction *, Value *> ConvertedInsts;
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LLVMContext *Ctx;
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};
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}
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#endif // LLVM_TRANSFORMS_SCALAR_FLOAT2INT_H
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