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Add BasicBlock level dominates(A,B) interface.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37493 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2007-06-07 18:39:40 +00:00
parent 9a51157db5
commit 259e6cf191
1 changed files with 14 additions and 2 deletions
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16
include/llvm/Analysis/Dominators.h
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@ -170,11 +170,16 @@ protected:
}
void updateDFSNumbers();
/// dominates - Returns true iff this dominates N. Note that this is not a
/// constant time operation!
///
inline bool dominates(const DomTreeNode *A, DomTreeNode *B) {
if (B == A) return true; // A node trivially dominates itself.
if (B == A)
return true; // A node trivially dominates itself.
if (A == 0 || B == 0)
return false;
ETNode *NodeA = A->getETNode();
ETNode *NodeB = B->getETNode();
@ -192,7 +197,14 @@ protected:
//return NodeB->DominatedBySlow(NodeA);
return dominatedBySlowTreeWalk(A, B);
}
inline bool dominates(BasicBlock *A, BasicBlock *B) {
if (A == B)
return true;
return dominates(getNode(A), getNode(B));
}
//===--------------------------------------------------------------------===//
// API to update (Post)DominatorTree information based on modifications to
// the CFG...