mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-01-17 06:33:21 +00:00
50d0b7ec3f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108 91177308-0d34-0410-b5e6-96231b3b80d8
36 lines
1.1 KiB
C++
36 lines
1.1 KiB
C++
//===-- 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/Method.h"
|
|
class Module;
|
|
class SymTabValue;
|
|
class BasicBlock;
|
|
|
|
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
|
|
|
|
// 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
|