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57 lines
2.0 KiB
C
57 lines
2.0 KiB
C
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//===-- TransformInternals.h - Shared functions for Transforms ---*- C++ -*--=//
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//
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// This header file declares shared functions used by the different components
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// of the Transforms library.
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//
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//===----------------------------------------------------------------------===//
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#ifndef TRANSFORM_INTERNALS_H
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#define TRANSFORM_INTERNALS_H
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#include "llvm/BasicBlock.h"
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#include "llvm/Target/TargetData.h"
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#include <map>
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// TargetData Hack: Eventually we will have annotations given to us by the
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// backend so that we know stuff about type size and alignments. For now
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// though, just use this, because it happens to match the model that GCC uses.
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//
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// FIXME: This should use annotations
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//
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extern const TargetData TD;
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// losslessCastableTypes - Return true if the types are bitwise equivalent.
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// This predicate returns true if it is possible to cast from one type to
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// another without gaining or losing precision, or altering the bits in any way.
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//
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bool losslessCastableTypes(const Type *T1, const Type *T2);
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// ReplaceInstWithValue - Replace all uses of an instruction (specified by BI)
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// with a value, then remove and delete the original instruction.
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//
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void ReplaceInstWithValue(BasicBlock::InstListType &BIL,
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BasicBlock::iterator &BI, Value *V);
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// ReplaceInstWithInst - Replace the instruction specified by BI with the
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// instruction specified by I. The original instruction is deleted and BI is
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// updated to point to the new instruction.
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//
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void ReplaceInstWithInst(BasicBlock::InstListType &BIL,
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BasicBlock::iterator &BI, Instruction *I);
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// ------------- Expression Conversion ---------------------
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typedef map<const Value*, const Type*> ValueTypeCache;
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typedef map<const Value*, Value*> ValueMapCache;
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// RetValConvertableToType - Return true if it is possible
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bool RetValConvertableToType(Value *V, const Type *Ty,
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ValueTypeCache &ConvertedTypes);
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void ConvertUsersType(Value *V, Value *NewVal, ValueMapCache &VMC);
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#endif
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