[llvm] [SCEV] Use computeMaxBECountForLT for howManyGreaterThans. (PR #224863)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `intel-sycl-gpu` running on `intel-sycl-gpu-01` while building `llvm` at step 7 "test-build-unified-tree-check-sycl".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/225/builds/18958

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 7 (test-build-unified-tree-check-sycl) failure: test (failure)
******************** TEST 'libsycl :: usm/memset.cpp' FAILED ********************
Exit Code: -6

Command Output (stdout):
--
# RUN: at line 9
/home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/bin/clang++ -Werror  -fsycl /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/llvm-project/libsycl/test/usm/memset.cpp -o /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/runtimes/runtimes-bins/libsycl/test/usm/Output/memset.cpp.tmp.out
# executed command: /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/bin/clang++ -Werror -fsycl /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/llvm-project/libsycl/test/usm/memset.cpp -o /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/runtimes/runtimes-bins/libsycl/test/usm/Output/memset.cpp.tmp.out
# note: command had no output on stdout or stderr
# RUN: at line 10
/home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/runtimes/runtimes-bins/libsycl/test/usm/Output/memset.cpp.tmp.out
# executed command: /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/build/runtimes/runtimes-bins/libsycl/test/usm/Output/memset.cpp.tmp.out
# .---command stderr------------
# | memset.cpp.tmp.out: /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/llvm-project/libsycl/test/usm/Inputs/fill_memset_common.hpp:36: void test(sycl::queue &, DataT *, OpT, PatternT) [VerifyOnDevice = false, DataT = unsigned char, OpT = (lambda at /home/test-user/llvm-buildbot-worker/intel-sycl-gpu/llvm-project/libsycl/test/usm/memset.cpp:22:10), PatternT = int]: Assertion `verify(Ptr, Pattern)' failed.
# `-----------------------------
# error: command failed with exit status: -6

--

********************


```

</details>

https://github.com/llvm/llvm-project/pull/224863