Use the range variant of find instead of unpacking begin/end

If the result of the find is only used to compare against end(), just
use is_contained instead.

No functionality change is intended.

llvm-svn: 278433
diff --git a/llvm/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp b/llvm/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
index ea40022..3631dfa 100644
--- a/llvm/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
+++ b/llvm/lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
@@ -1154,7 +1154,7 @@
     return;
 
   auto FindIndex = [](ArrayRef<Value *> LiveVec, Value *Val) {
-    auto ValIt = std::find(LiveVec.begin(), LiveVec.end(), Val);
+    auto ValIt = find(LiveVec, Val);
     assert(ValIt != LiveVec.end() && "Val not found in LiveVec!");
     size_t Index = std::distance(LiveVec.begin(), ValIt);
     assert(Index < LiveVec.size() && "Bug in std::find?");
@@ -1929,8 +1929,7 @@
           // Assert that cloned instruction does not use any instructions from
           // this chain other than LastClonedValue
           for (auto OpValue : ClonedValue->operand_values()) {
-            assert(std::find(ChainToBase.begin(), ChainToBase.end(), OpValue) ==
-                       ChainToBase.end() &&
+            assert(!is_contained(ChainToBase, OpValue) &&
                    "incorrect use in rematerialization chain");
           }
 #endif