diff options
Diffstat (limited to 'include/llvm/Analysis/CFG.h')
| -rw-r--r-- | include/llvm/Analysis/CFG.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/include/llvm/Analysis/CFG.h b/include/llvm/Analysis/CFG.h index 08fdc26..e5683c8 100644 --- a/include/llvm/Analysis/CFG.h +++ b/include/llvm/Analysis/CFG.h @@ -49,6 +49,9 @@ unsigned GetSuccessorNumber(BasicBlock *BB, BasicBlock *Succ); bool isCriticalEdge(const TerminatorInst *TI, unsigned SuccNum, bool AllowIdenticalEdges = false); +/// \brief Determine whether instruction 'To' is reachable from 'From', +/// returning true if uncertain. +/// /// Determine whether there is a path from From to To within a single function. /// Returns false only if we can prove that once 'From' has been executed then /// 'To' can not be executed. Conservatively returns true. @@ -62,7 +65,18 @@ bool isCriticalEdge(const TerminatorInst *TI, unsigned SuccNum, /// on branchy code but not loops, and LI is most useful on code with loops but /// does not help on branchy code outside loops. bool isPotentiallyReachable(const Instruction *From, const Instruction *To, - DominatorTree *DT = 0, LoopInfo *LI = 0); + const DominatorTree *DT = 0, + const LoopInfo *LI = 0); + +/// \brief Determine whether block 'To' is reachable from 'From', returning +/// true if uncertain. +/// +/// Determine whether there is a path from From to To within a single function. +/// Returns false only if we can prove that once 'From' has been reached then +/// 'To' can not be executed. Conservatively returns true. +bool isPotentiallyReachable(const BasicBlock *From, const BasicBlock *To, + const DominatorTree *DT = 0, + const LoopInfo *LI = 0); } // End llvm namespace |