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/IPO/LoopExtractor.cpp b/llvm/lib/Transforms/IPO/LoopExtractor.cpp
index 7578e6a..3c6a7bb 100644
--- a/llvm/lib/Transforms/IPO/LoopExtractor.cpp
+++ b/llvm/lib/Transforms/IPO/LoopExtractor.cpp
@@ -81,7 +81,7 @@
 Pass *llvm::createLoopExtractorPass() { return new LoopExtractor(); }
 
 bool LoopExtractor::runOnLoop(Loop *L, LPPassManager &) {
-  if (skipLoop(L))
+  if (skipOptnoneFunction(L))
     return false;
 
   // Only visit top-level loops.
@@ -249,9 +249,6 @@
 }
 
 bool BlockExtractorPass::runOnModule(Module &M) {
-  if (skipModule(M))
-    return false;
-
   std::set<BasicBlock*> TranslatedBlocksToNotExtract;
   for (unsigned i = 0, e = BlocksToNotExtract.size(); i != e; ++i) {
     BasicBlock *BB = BlocksToNotExtract[i];