[llvm] [InstCombine] Add user-count bailout to isAllocSiteRemovable (PR #190347)

[Yingwei Zheng via llvm-commits]

================
@@ -0,0 +1,9 @@
+; RUN: %python %S/Inputs/allocsite-removable-timeout-gen.py 12000 | \
----------------
dtcxzyw wrote:

It is enough to just add a variant to `allocsite-removable-few-users.ll` with a small threshold.



https://github.com/llvm/llvm-project/pull/190347