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//===-- ConstantProp.h - Functions for Constant Propogation ------*- C++ -*--=//
//
// This family of functions are useful for performing constant propogation.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TRANSFORMS_SCALAR_CONSTANT_PROPOGATION_H
#define LLVM_TRANSFORMS_SCALAR_CONSTANT_PROPOGATION_H
#include "llvm/Pass.h"
#include "llvm/BasicBlock.h"
class TerminatorInst;
struct ConstantPropogation : public MethodPass {
// doConstantPropogation - Do trivial constant propogation and expression
// folding
static bool doConstantPropogation(Method *M);
// doConstantPropogation - Constant prop a specific instruction. Returns true
// and potentially moves the iterator if constant propogation was performed.
//
static bool doConstantPropogation(BasicBlock *BB, BasicBlock::iterator &I);
inline bool runOnMethod(Method *M) {
return doConstantPropogation(M);
}
};
// ConstantFoldTerminator - If a terminator instruction is predicated on a
// constant value, convert it into an unconditional branch to the constant
// destination.
//
bool ConstantFoldTerminator(TerminatorInst *T);
//===----------------------------------------------------------------------===//
// Sparse Conditional Constant Propogation Pass
//
struct SCCPPass : public MethodPass {
static bool doSCCP(Method *M);
inline bool runOnMethod(Method *M) {
return doSCCP(M);
}
};
#endif
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