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

[Alan Zhao via llvm-commits]

alanzhao1 wrote:

Hi - Chrome is seeing crashes due to this PR as well (https://crbug.com/351866598).

Unfortunately, https://github.com/llvm/llvm-project/commit/2cba218ca573f5da6ff301df59aa686d2e3e40c5 does *not* fix the crash in our case.

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