[Orc] Fix a bug in the compile callback manager: trampoline ids need to be fixed

up before returning them to the available pool.

llvm-svn: 229806

llvm/include/llvm/ExecutionEngine/Orc/IndirectionUtils.h

@@ -55,7 +55,7 @@ public:
     // Moving the trampoline ID back to the available list first means there's at
     // least one available trampoline if the compile action triggers a request for
     // a new one.
-    AvailableTrampolines.push_back(I->first);
+    AvailableTrampolines.push_back(I->first - TargetT::CallSize);
     auto CallbackHandler = std::move(I->second);
     ActiveTrampolines.erase(I);