[llvm] [SLP]Remove operands upon marking instruction for deletion. (PR #97409)

[Alexey Bataev via llvm-commits]

alexey-bataev wrote:

> Hi - Chrome is seeing crashes due to this PR as well (https://crbug.com/351866598).
> 
> Unfortunately, [2cba218](https://github.com/llvm/llvm-project/commit/2cba218ca573f5da6ff301df59aa686d2e3e40c5) does _not_ fix the crash in our case.

Can you provide a reproducer?

https://github.com/llvm/llvm-project/pull/97409