diff --git a/llvm/lib/CodeGen/MachineSink.cpp b/llvm/lib/CodeGen/MachineSink.cpp
--- a/llvm/lib/CodeGen/MachineSink.cpp
+++ b/llvm/lib/CodeGen/MachineSink.cpp
@@ -1400,13 +1400,6 @@
       TryBreak = true;
     }
 
-    // We don't want to sink across a critical edge if we don't dominate the
-    // successor. We could be introducing calculations to new code paths.
-    if (!TryBreak && !DT->dominates(ParentBlock, SuccToSinkTo)) {
-      LLVM_DEBUG(dbgs() << " *** NOTE: Critical edge found\n");
-      TryBreak = true;
-    }
-
     // Don't sink instructions into a loop.
     if (!TryBreak && LI->isLoopHeader(SuccToSinkTo)) {
       LLVM_DEBUG(dbgs() << " *** NOTE: Loop header found\n");