Fix an apparent copy-and-paste problem in an error message.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75197 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp

@@ -5321,7 +5321,7 @@ void SelectionDAGLowering::visitInlineAsm(CallSite CS) {
 
       // Copy the input into the appropriate registers.
       if (OpInfo.AssignedRegs.Regs.empty()) {
-        cerr << "llvm: error: Couldn't allocate output reg for constraint '"
+        cerr << "llvm: error: Couldn't allocate input reg for constraint '"
              << OpInfo.ConstraintCode << "'!\n";
         exit(1);
       }