Fix the buildbot

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191133 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 0e9381d..c5cc2cb 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -16801,9 +16801,9 @@
 
   // Try to match a min/max vector operation.
   if (N->getOpcode() == ISD::VSELECT && Cond.getOpcode() == ISD::SETCC) {
-    unsigned Opc;
-    bool NeedSplit;
-    std::tie(Opc, NeedSplit) = matchIntegerMINMAX(Cond, VT, LHS, RHS, DAG, Subtarget);
+    std::pair<unsigned, bool> ret = matchIntegerMINMAX(Cond, VT, LHS, RHS, DAG, Subtarget);
+    unsigned Opc = ret.first;
+    bool NeedSplit = ret.second;
 
     if (Opc && NeedSplit) {
       unsigned NumElems = VT.getVectorNumElements();