Simplify JIT target selection.

- Instead of requiring targets to define a JIT quality match function, we just
   have them specify if they support a JIT.

 - Target selection for the JIT just gets the host triple and looks for the best
   target which matches the triple and has a JIT.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77060 91177308-0d34-0410-b5e6-96231b3b80d8

lib/ExecutionEngine/JIT/TargetSelect.cpp

@@ -65,7 +65,7 @@ TargetMachine *JIT::selectTarget(ModuleProvider *MP, std::string *ErrorStr) {
       return 0;
     }        
 
-    if (TheTarget->getJITMatchQuality() == 0) {
+    if (!TheTarget->hasJIT()) {
       cerr << "WARNING: This target JIT is not designed for the host you are"
            << " running.  If bad things happen, please choose a different "
            << "-march switch.\n";