1 files changed, 7 insertions, 9 deletions

diff --git a/contrib/llvm/lib/CodeGen/Analysis.cpp b/contrib/llvm/lib/CodeGen/Analysis.cpp
index 2e8af9eb0048..3224fac25cb4 100644
--- a/contrib/llvm/lib/CodeGen/Analysis.cpp
+++ b/contrib/llvm/lib/CodeGen/Analysis.cpp
@@ -295,8 +295,8 @@ static const Value *getNoopInput(const Value *V,
     } else if (const InsertValueInst *IVI = dyn_cast<InsertValueInst>(V)) {
       // Value may come from either the aggregate or the scalar
       ArrayRef<unsigned> InsertLoc = IVI->getIndices();
-      if (std::equal(InsertLoc.rbegin(), InsertLoc.rend(),
-                     ValLoc.rbegin())) {
+      if (ValLoc.size() >= InsertLoc.size() &&
+          std::equal(InsertLoc.begin(), InsertLoc.end(), ValLoc.rbegin())) {
         // The type being inserted is a nested sub-type of the aggregate; we
         // have to remove those initial indices to get the location we're
         // interested in for the operand.
@@ -312,8 +312,7 @@ static const Value *getNoopInput(const Value *V,
       // previous aggregate. Combine the two paths to obtain the true address of
       // our element.
       ArrayRef<unsigned> ExtractLoc = EVI->getIndices();
-      std::copy(ExtractLoc.rbegin(), ExtractLoc.rend(),
-                std::back_inserter(ValLoc));
+      ValLoc.append(ExtractLoc.rbegin(), ExtractLoc.rend());
       NoopInput = Op;
     }
     // Terminate if we couldn't find anything to look through.
@@ -518,8 +517,9 @@ bool llvm::isInTailCallPosition(ImmutableCallSite CS, const TargetMachine &TM) {
         return false;
     }
 
+  const Function *F = ExitBB->getParent();
   return returnTypeIsEligibleForTailCall(
-      ExitBB->getParent(), I, Ret, *TM.getSubtargetImpl()->getTargetLowering());
+      F, I, Ret, *TM.getSubtargetImpl(*F)->getTargetLowering());
 }
 
 bool llvm::returnTypeIsEligibleForTailCall(const Function *F,
@@ -600,10 +600,8 @@ bool llvm::returnTypeIsEligibleForTailCall(const Function *F,
     // The manipulations performed when we're looking through an insertvalue or
     // an extractvalue would happen at the front of the RetPath list, so since
     // we have to copy it anyway it's more efficient to create a reversed copy.
-    using std::copy;
-    SmallVector<unsigned, 4> TmpRetPath, TmpCallPath;
-    copy(RetPath.rbegin(), RetPath.rend(), std::back_inserter(TmpRetPath));
-    copy(CallPath.rbegin(), CallPath.rend(), std::back_inserter(TmpCallPath));
+    SmallVector<unsigned, 4> TmpRetPath(RetPath.rbegin(), RetPath.rend());
+    SmallVector<unsigned, 4> TmpCallPath(CallPath.rbegin(), CallPath.rend());
 
     // Finally, we can check whether the value produced by the tail call at this
     // index is compatible with the value we return.