Index: bolt/lib/Core/BinaryContext.cpp
===================================================================
--- bolt/lib/Core/BinaryContext.cpp
+++ bolt/lib/Core/BinaryContext.cpp
@@ -1191,8 +1191,7 @@
     MIB->addAnnotation(Instruction, "AArch64Veneer", true);
     Veneer->addInstruction(Offset, std::move(Instruction));
     --Count;
-    for (auto It = std::prev(Instructions.end()); Count != 0;
-         It = std::prev(It), --Count) {
+    for (auto It = Instructions.rbegin(); Count != 0; ++It, --Count) {
       MIB->addAnnotation(It->second, "AArch64Veneer", true);
       Veneer->addInstruction(It->first, std::move(It->second));
     }