Revert r97245 which seems to be causing performance problems.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97366 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Support/StandardPasses.h

@@ -138,7 +138,7 @@ namespace llvm {
       PM->add(createLoopUnrollPass());          // Unroll small loops
     PM->add(createInstructionCombiningPass());  // Clean up after the unroller
     if (OptimizationLevel > 1)
-      PM->add(createGVNPass(OptimizationLevel > 2)); // Remove redundancies
+      PM->add(createGVNPass());                 // Remove redundancies
     PM->add(createMemCpyOptPass());             // Remove memcpy / form memset
     PM->add(createSCCPPass());                  // Constant prop with SCCP
   

include/llvm/Transforms/Scalar.h

@@ -263,8 +263,7 @@ extern const PassInfo *const LCSSAID;
 // GVN - This pass performs global value numbering and redundant load 
 // elimination cotemporaneously.
 //
-FunctionPass *createGVNPass(bool EnableFullLoadPRE = true,
-                            bool NoLoads = false);
+FunctionPass *createGVNPass(bool NoLoads = false);
 
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