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52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
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//===-- Float2Int.h - Demote floating point ops to work on integers -------===//
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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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//
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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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ConstantRange 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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