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//===-- DCE.h - Functions that perform Dead Code Elimination -----*- C++ -*--=//
//
// This family of functions is useful for performing dead code elimination of
// various sorts.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_OPT_DCE_H
#define LLVM_OPT_DCE_H
#include "llvm/Module.h"
#include "llvm/Method.h"
namespace opt {
bool DoDeadCodeElimination(Method *M); // DCE a method
bool DoRemoveUnusedConstants(SymTabValue *S); // RUC a method or module
bool DoDeadCodeElimination(Module *C); // DCE & RUC a whole module
// DoADCE - Execute the Agressive Dead Code Elimination Algorithm
//
bool DoADCE(Method *M); // Defined in ADCE.cpp
static inline bool DoADCE(Module *M) {
return M->reduceApply(DoADCE);
}
// SimplifyCFG - This function is used to do simplification of a CFG. For
// example, it adjusts branches to branches to eliminate the extra hop, it
// eliminates unreachable basic blocks, and does other "peephole" optimization
// of the CFG. It returns true if a modification was made, and returns an
// iterator that designates the first element remaining after the block that
// was deleted.
//
// WARNING: The entry node of a method may not be simplified.
//
bool SimplifyCFG(Method::iterator &BBIt);
} // End namespace opt
#endif
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