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Make this a *real* header:

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1. Remove using namespace llvm;
  2. Remove unneeded #includes.
  3. Add #include guard.

Also add prototypes for new code moved from transformutils to libanalysis.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33682 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-01-30 23:47:35 +00:00
parent 997c74ce35
commit c3ce689374
1 changed files with 34 additions and 3 deletions
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37
include/llvm/Analysis/ConstantFolding.h
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@ -12,12 +12,42 @@
//
//===----------------------------------------------------------------------===//
#include "llvm/Constants.h"
#include "llvm/Function.h"
using namespace llvm;
#ifndef LLVM_ANALYSIS_CONSTANTFOLDING_H
#define LLVM_ANALYSIS_CONSTANTFOLDING_H
namespace llvm {
class Constant;
class ConstantExpr;
class Instruction;
class TargetData;
class Function;
/// ConstantFoldInstruction - Attempt to constant fold the specified
/// instruction. If successful, the constant result is returned, if not, null
/// is returned. Note that this function can only fail when attempting to fold
/// instructions like loads and stores, which have no constant expression form.
///
Constant *ConstantFoldInstruction(Instruction *I, const TargetData *TD = 0);
/// ConstantFoldInstOperands - Attempt to constant fold an instruction with the
/// specified operands. If successful, the constant result is returned, if not,
/// null is returned. Note that this function can fail when attempting to
/// fold instructions like loads and stores, which have no constant expression
/// form.
///
Constant *ConstantFoldInstOperands(
const Instruction *I, ///< The model instruction
Constant** Ops, ///< The array of constant operands to use.
unsigned NumOps, ///< The number of operands provided.
const TargetData *TD = 0 ///< Optional target information.
);
/// ConstantFoldLoadThroughGEPConstantExpr - Given a constant and a
/// getelementptr constantexpr, return the constant value being addressed by the
/// constant expression, or null if something is funny and we can't decide.
Constant *ConstantFoldLoadThroughGEPConstantExpr(Constant *C, ConstantExpr *CE);
/// canConstantFoldCallTo - Return true if its even possible to fold a call to
/// the specified function.
bool canConstantFoldCallTo(Function *F);
@ -28,3 +58,4 @@ Constant *
ConstantFoldCall(Function *F, Constant** Operands, unsigned NumOperands);
}
#endif