Disable -loop-index-split for now.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60089 91177308-0d34-0410-b5e6-96231b3b80d8

Driver/Backend.cpp

@@ -280,7 +280,7 @@ void BackendConsumer::CreatePasses() {
     PM->add(createLoopRotatePass());              // Rotate Loop
     PM->add(createLICMPass());                    // Hoist loop invariants
     PM->add(createLoopUnswitchPass(CompileOpts.OptimizeSize ? true : false));
-    PM->add(createLoopIndexSplitPass());          // Split loop index
+//    PM->add(createLoopIndexSplitPass());          // Split loop index
     PM->add(createInstructionCombiningPass());  
     PM->add(createIndVarSimplifyPass());          // Canonicalize indvars
     PM->add(createLoopDeletionPass());            // Delete dead loops