Revert "Initial implementation of optimization bisect support."

This reverts commit r267022, due to an ASan failure:

  http://lab.llvm.org:8080/green/job/clang-stage2-cmake-RgSan_check/1549

llvm-svn: 267115
diff --git a/llvm/lib/Transforms/Scalar/SCCP.cpp b/llvm/lib/Transforms/Scalar/SCCP.cpp
index f1f36b7..2242a2b 100644
--- a/llvm/lib/Transforms/Scalar/SCCP.cpp
+++ b/llvm/lib/Transforms/Scalar/SCCP.cpp
@@ -1568,7 +1568,7 @@
 // and return true if the function was modified.
 //
 bool SCCP::runOnFunction(Function &F) {
-  if (skipFunction(F))
+  if (skipOptnoneFunction(F))
     return false;
 
   DEBUG(dbgs() << "SCCP on function '" << F.getName() << "'\n");
@@ -1705,9 +1705,6 @@
 }
 
 bool IPSCCP::runOnModule(Module &M) {
-  if (skipModule(M))
-    return false;
-
   const DataLayout &DL = M.getDataLayout();
   const TargetLibraryInfo *TLI =
       &getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();