[llvm] [Asan] Provide TTI hook to provide memory reference infromation of ta… (PR #127753)

[Craig Topper via llvm-commits]

topperc wrote:

> We already have getTgtMemIntrinsic. If something else is needed we should augment that interface instead of adding yet another parallel one

getTgtMemIntrinsic is in TargetLowering so wouldn't be accessible to the middle end. Should it move to TTI or have a TTI wrapper around it?

https://github.com/llvm/llvm-project/pull/127753