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

1 files changed, 0 insertions, 18 deletions

diff --git a/llvm/lib/IR/LLVMContextImpl.cpp b/llvm/lib/IR/LLVMContextImpl.cpp
index d27fcb1..d5d9038 100644
--- a/llvm/lib/IR/LLVMContextImpl.cpp
+++ b/llvm/lib/IR/LLVMContextImpl.cpp
@@ -16,8 +16,6 @@
 #include "llvm/IR/Attributes.h"
 #include "llvm/IR/DiagnosticInfo.h"
 #include "llvm/IR/Module.h"
-#include "llvm/IR/OptBisect.h"
-#include "llvm/Support/ManagedStatic.h"
 #include <algorithm>
 using namespace llvm;
 
@@ -234,19 +232,3 @@ void GetElementPtrConstantExpr::anchor() { }
 
 void CompareConstantExpr::anchor() { }
 
-/// Singleton instance of the OptBisect class.
-///
-/// This singleton is accessed via the LLVMContext::getOptBisect() function.  It
-/// provides a mechanism to disable passes and individual optimizations at
-/// compile time based on a command line option (-opt-bisect-limit) in order to
-/// perform a bisecting search for optimization-related problems.
-///
-/// Even if multiple LLVMContext objects are created, they will all return the
-/// same instance of OptBisect in order to provide a single bisect count.  Any
-/// code that uses the OptBisect object should be serialized when bisection is
-/// enabled in order to enable a consistent bisect count.
-static ManagedStatic<OptBisect> OptBisector;
-
-OptBisect &LLVMContextImpl::getOptBisect() {
-  return *OptBisector;
-}