Rollback of commit "Repress sanitization on User dtor."

This would have suppressed bug 24578, about use-after-
destroy on User and MDNode. Rolled back suppression for
the sake of code cleanliness, in preferance for bug
tracking to keep track of this issue.

This reverts commit 6ff2baabc4625d5b0a8dccf76aa0f72d930ea6c0.

llvm-svn: 246484

1 files changed, 1 insertions, 3 deletions

diff --git a/llvm/lib/IR/Metadata.cpp b/llvm/lib/IR/Metadata.cpp
index 51548a82576..7d8c3523743 100644
--- a/llvm/lib/IR/Metadata.cpp
+++ b/llvm/lib/IR/Metadata.cpp
@@ -401,9 +401,7 @@ void *MDNode::operator new(size_t Size, unsigned NumOps) {
   return Ptr;
 }
 
-// Repress memory sanitization, due to use-after-destroy by operator
-// delete. Bug report 24578 identifies this issue.
-LLVM_NO_SANITIZE_MEMORY_ATTRIBUTE void MDNode::operator delete(void *Mem) {
+void MDNode::operator delete(void *Mem) {
   MDNode *N = static_cast<MDNode *>(Mem);
   size_t OpSize = N->NumOperands * sizeof(MDOperand);
   OpSize = RoundUpToAlignment(OpSize, llvm::alignOf<uint64_t>());