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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115 91177308-0d34-0410-b5e6-96231b3b80d8
42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
//===-- DCE.h - Functions that perform Dead Code Elimination -----*- C++ -*--=//
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//
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// This family of functions is useful for performing dead code elimination of
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// various sorts.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_OPT_DCE_H
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#define LLVM_OPT_DCE_H
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#include "llvm/Module.h"
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#include "llvm/Method.h"
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namespace opt {
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bool DoDeadCodeElimination(Method *M); // DCE a method
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bool DoRemoveUnusedConstants(SymTabValue *S); // RUC a method or module
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bool DoDeadCodeElimination(Module *C); // DCE & RUC a whole module
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// DoADCE - Execute the Agressive Dead Code Elimination Algorithm
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//
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bool DoADCE(Method *M); // Defined in ADCE.cpp
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static inline bool DoADCE(Module *M) {
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return M->reduceApply(DoADCE);
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}
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// SimplifyCFG - This function is used to do simplification of a CFG. For
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// example, it adjusts branches to branches to eliminate the extra hop, it
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// eliminates unreachable basic blocks, and does other "peephole" optimization
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// of the CFG. It returns true if a modification was made, and returns an
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// iterator that designates the first element remaining after the block that
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// was deleted.
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//
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// WARNING: The entry node of a method may not be simplified.
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//
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bool SimplifyCFG(Method::iterator &BBIt);
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} // End namespace opt
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#endif
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