[llvm] [SCEV] Fold (C1 * A /u C2) -> A /u (C2 /u C1), if C2 > C1. (PR #157656)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `lldb-x86_64-debian` running on `lldb-x86_64-debian` while building `llvm` at step 6 "test".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/162/builds/30895

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

```
Step 6 (test) failure: build (failure)
...
PASS: lldb-api :: functionalities/thread/finish-from-empty-func/TestEmptyFuncThreadStepOut.py (815 of 3188)
PASS: lldb-api :: commands/disassemble/basic/TestDisassembleBreakpoint.py (816 of 3188)
PASS: lldb-api :: python_api/findvalue_duplist/TestSBFrameFindValue.py (817 of 3188)
PASS: lldb-api :: functionalities/thread/backtrace_limit/TestBacktraceLimit.py (818 of 3188)
PASS: lldb-api :: linux/mix-dwo-and-regular-objects/TestMixedDwarfBinary.py (819 of 3188)
PASS: lldb-api :: arm/emulation/TestEmulations.py (820 of 3188)
PASS: lldb-api :: python_api/watchpoint/TestWatchpointIter.py (821 of 3188)
PASS: lldb-api :: commands/disassemble/basic/TestFrameDisassemble.py (822 of 3188)
PASS: lldb-shell :: SymbolFile/NativePDB/find-functions.cpp (823 of 3188)
PASS: lldb-api :: linux/add-symbols/TestTargetSymbolsAddCommand.py (824 of 3188)
FAIL: lldb-api :: functionalities/postmortem/netbsd-core/TestNetBSDCore.py (825 of 3188)
******************** TEST 'lldb-api :: functionalities/postmortem/netbsd-core/TestNetBSDCore.py' FAILED ********************
Script:
--
/usr/bin/python3 /home/worker/2.0.1/lldb-x86_64-debian/llvm-project/lldb/test/API/dotest.py -u CXXFLAGS -u CFLAGS --env LLVM_LIBS_DIR=/home/worker/2.0.1/lldb-x86_64-debian/build/./lib --env LLVM_INCLUDE_DIR=/home/worker/2.0.1/lldb-x86_64-debian/build/include --env LLVM_TOOLS_DIR=/home/worker/2.0.1/lldb-x86_64-debian/build/./bin --arch x86_64 --build-dir /home/worker/2.0.1/lldb-x86_64-debian/build/lldb-test-build.noindex --lldb-module-cache-dir /home/worker/2.0.1/lldb-x86_64-debian/build/lldb-test-build.noindex/module-cache-lldb/lldb-api --clang-module-cache-dir /home/worker/2.0.1/lldb-x86_64-debian/build/lldb-test-build.noindex/module-cache-clang/lldb-api --executable /home/worker/2.0.1/lldb-x86_64-debian/build/./bin/lldb --compiler /home/worker/2.0.1/lldb-x86_64-debian/build/./bin/clang --dsymutil /home/worker/2.0.1/lldb-x86_64-debian/build/./bin/dsymutil --make /usr/bin/gmake --llvm-tools-dir /home/worker/2.0.1/lldb-x86_64-debian/build/./bin --lldb-obj-root /home/worker/2.0.1/lldb-x86_64-debian/build/tools/lldb --lldb-libs-dir /home/worker/2.0.1/lldb-x86_64-debian/build/./lib --cmake-build-type Release -t /home/worker/2.0.1/lldb-x86_64-debian/llvm-project/lldb/test/API/functionalities/postmortem/netbsd-core -p TestNetBSDCore.py
--
Exit Code: -6

Command Output (stdout):
--
lldb version 22.0.0git (https://github.com/llvm/llvm-project.git revision 70012fda6312ba87bc0bf9009402e0869a816d1f)
  clang revision 70012fda6312ba87bc0bf9009402e0869a816d1f
  llvm revision 70012fda6312ba87bc0bf9009402e0869a816d1f
Skipping the following test categories: ['libc++', 'msvcstl', 'dsym', 'gmodules', 'debugserver', 'objc']

--
Command Output (stderr):
--
Change dir to: /home/worker/2.0.1/lldb-x86_64-debian/llvm-project/lldb/test/API/functionalities/postmortem/netbsd-core
runCmd: settings clear --all

output: 

runCmd: settings set symbols.enable-external-lookup false

output: 

runCmd: settings set target.inherit-tcc true

output: 

runCmd: settings set target.disable-aslr false

output: 

runCmd: settings set target.detach-on-error false

output: 


```

</details>

https://github.com/llvm/llvm-project/pull/157656