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Diffstat (limited to 'include/llvm/Transforms/Scalar/Float2Int.h')
-rw-r--r-- | include/llvm/Transforms/Scalar/Float2Int.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/include/llvm/Transforms/Scalar/Float2Int.h b/include/llvm/Transforms/Scalar/Float2Int.h new file mode 100644 index 000000000000..a8042399fb08 --- /dev/null +++ b/include/llvm/Transforms/Scalar/Float2Int.h @@ -0,0 +1,51 @@ +//===-- Float2Int.h - Demote floating point ops to work on integers -------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file provides the Float2Int pass, which aims to demote floating +// point operations to work on integers, where that is losslessly possible. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_TRANSFORMS_SCALAR_FLOAT2INT_H +#define LLVM_TRANSFORMS_SCALAR_FLOAT2INT_H + +#include "llvm/ADT/EquivalenceClasses.h" +#include "llvm/ADT/MapVector.h" +#include "llvm/IR/ConstantRange.h" +#include "llvm/IR/Function.h" +#include "llvm/IR/PassManager.h" + +namespace llvm { +class Float2IntPass : public PassInfoMixin<Float2IntPass> { +public: + PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM); + + // Glue for old PM. + bool runImpl(Function &F); + +private: + void findRoots(Function &F, SmallPtrSet<Instruction *, 8> &Roots); + ConstantRange seen(Instruction *I, ConstantRange R); + ConstantRange badRange(); + ConstantRange unknownRange(); + ConstantRange validateRange(ConstantRange R); + void walkBackwards(const SmallPtrSetImpl<Instruction *> &Roots); + void walkForwards(); + bool validateAndTransform(); + Value *convert(Instruction *I, Type *ToTy); + void cleanup(); + + MapVector<Instruction *, ConstantRange> SeenInsts; + SmallPtrSet<Instruction *, 8> Roots; + EquivalenceClasses<Instruction *> ECs; + MapVector<Instruction *, Value *> ConvertedInsts; + LLVMContext *Ctx; +}; +} +#endif // LLVM_TRANSFORMS_SCALAR_FLOAT2INT_H |