[asan] remove .preinit_array from the compiler module (it breaks .so builds). This...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146527 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Instrumentation/AddressSanitizer.cpp b/lib/Transforms/Instrumentation/AddressSanitizer.cpp
index f170cf150ab873fccabb3e1ddf381dba4d38a39a..4d6e74b83340112aa53f3c70ca0ef780be5eaffe 100644 (file)
--- a/lib/Transforms/Instrumentation/AddressSanitizer.cpp
+++ b/lib/Transforms/Instrumentation/AddressSanitizer.cpp
@@ -163,8 +163,6 @@ struct AddressSanitizer : public ModulePass {
 
  private:
 
-  void appendToPreinitArray(Module &M, Function *F);
-
   uint64_t getAllocaSizeInBytes(AllocaInst *AI) {
     Type *Ty = AI->getAllocatedType();
     uint64_t SizeInBytes = TD->getTypeStoreSizeInBits(Ty) / 8;
@@ -565,17 +563,6 @@ bool AddressSanitizer::insertGlobalRedzones(Module &M) {
   return true;
 }
 
-// .preinit_array is something that hapens before all other inits.
-// On systems where .preinit_array is honored, we will call __asan_init early.
-void AddressSanitizer::appendToPreinitArray(Module &M, Function *F) {
-  IRBuilder<> IRB(M.getContext());
-  GlobalVariable *Var =
-      new GlobalVariable(M, PointerType::getUnqual(F->getFunctionType()),
-                         false, GlobalValue::PrivateLinkage,
-                         F, "__asan_preinit_private");
-  Var->setSection(".preinit_array");
-}
-
 // virtual
 bool AddressSanitizer::runOnModule(Module &M) {
   // Initialize the private fields. No one has accessed them before.
@@ -647,9 +634,6 @@ bool AddressSanitizer::runOnModule(Module &M) {
 
   appendToGlobalCtors(M, AsanCtorFunction, 1 /*high priority*/);
 
-  if (M.getTargetTriple().find("linux") != std::string::npos)
-    appendToPreinitArray(M, AsanInitFunction);
-
   return Res;
 }