[llvm] [IR] Use alloc markers for operator delete variants (PR #138261)

[Nikita Popov via llvm-commits]

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@@ -191,28 +191,70 @@ void *User::operator new(size_t Size, HungOffOperandsAllocMarker) {
 LLVM_NO_SANITIZE_MEMORY_ATTRIBUTE void User::operator delete(void *Usr) {
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nikic wrote:

Can drop the Obj initialization in the two operator new methods above now?

https://github.com/llvm/llvm-project/pull/138261