diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/Transforms/Scalar.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/llvm/Transforms/Scalar.h b/include/llvm/Transforms/Scalar.h index 3161d68..1ade0f4 100644 --- a/include/llvm/Transforms/Scalar.h +++ b/include/llvm/Transforms/Scalar.h @@ -11,6 +11,7 @@ class Pass; class GetElementPtrInst; class PassInfo; +class TerminatorInst; //===----------------------------------------------------------------------===// // @@ -188,6 +189,21 @@ Pass *createCFGSimplificationPass(); Pass *createBreakCriticalEdgesPass(); extern const PassInfo *BreakCriticalEdgesID; +// The BreakCriticalEdges pass also exposes some low-level functionality that +// may be used by other passes. + +/// isCriticalEdge - Return true if the specified edge is a critical edge. +/// Critical edges are edges from a block with multiple successors to a block +/// with multiple predecessors. +/// +bool isCriticalEdge(const TerminatorInst *TI, unsigned SuccNum); + +/// SplitCriticalEdge - Insert a new node node to split the critical edge. This +/// will update DominatorSet, ImmediateDominator and DominatorTree information +/// if a pass is specified, thus calling this pass will not invalidate these +/// analyses. +/// +void SplitCriticalEdge(TerminatorInst *TI, unsigned SuccNum, Pass *P = 0); //===----------------------------------------------------------------------===// // |