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, 4 insertions, 10 deletions

diff --git a/llvm/lib/Analysis/LoopPass.cpp b/llvm/lib/Analysis/LoopPass.cpp
index 3181e4f9921..8163231c332 100644
--- a/llvm/lib/Analysis/LoopPass.cpp
+++ b/llvm/lib/Analysis/LoopPass.cpp
@@ -16,7 +16,6 @@
 #include "llvm/Analysis/LoopPass.h"
 #include "llvm/IR/IRPrintingPasses.h"
 #include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/OptBisect.h"
 #include "llvm/IR/PassManager.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/Timer.h"
@@ -336,16 +335,11 @@ void LoopPass::assignPassManager(PMStack &PMS,
   LPPM->add(this);
 }
 
-bool LoopPass::skipLoop(const Loop *L) const {
+// Containing function has Attribute::OptimizeNone and transformation
+// passes should skip it.
+bool LoopPass::skipOptnoneFunction(const Loop *L) const {
   const Function *F = L->getHeader()->getParent();
-  if (!F)
-    return false;
-  // Check the opt bisect limit.
-  LLVMContext &Context = F->getContext();
-  if (!Context.getOptBisect().shouldRunPass(this, *L))
-    return true;
-  // Check for the OptimizeNone attribute.
-  if (F->hasFnAttribute(Attribute::OptimizeNone)) {
+  if (F && F->hasFnAttribute(Attribute::OptimizeNone)) {
     // FIXME: Report this to dbgs() only once per function.
     DEBUG(dbgs() << "Skipping pass '" << getPassName()
           << "' in function " << F->getName() << "\n");