Revert r246244 and r246243

These two commits cause clang/llvm bootstrap to hang.

llvm-svn: 246279

1 files changed, 2 insertions, 4 deletions

diff --git a/llvm/lib/IR/Dominators.cpp b/llvm/lib/IR/Dominators.cpp
index d94e31d4..775bd92 100644
--- a/llvm/lib/IR/Dominators.cpp
+++ b/llvm/lib/IR/Dominators.cpp
@@ -147,8 +147,7 @@ bool DominatorTree::dominates(const BasicBlockEdge &BBE,
   // Assert that we have a single edge. We could handle them by simply
   // returning false, but since isSingleEdge is linear on the number of
   // edges, the callers can normally handle them more efficiently.
-  assert(BBE.isSingleEdge() &&
-         "This function is not efficient in handling multiple edges");
+  assert(BBE.isSingleEdge());
 
   // If the BB the edge ends in doesn't dominate the use BB, then the
   // edge also doesn't.
@@ -198,8 +197,7 @@ bool DominatorTree::dominates(const BasicBlockEdge &BBE, const Use &U) const {
   // Assert that we have a single edge. We could handle them by simply
   // returning false, but since isSingleEdge is linear on the number of
   // edges, the callers can normally handle them more efficiently.
-  assert(BBE.isSingleEdge() &&
-         "This function is not efficient in handling multiple edges");
+  assert(BBE.isSingleEdge());
 
   Instruction *UserInst = cast<Instruction>(U.getUser());
   // A PHI in the end of the edge is dominated by it.