[llvm] [LLVM][CGP] Allow finer control for sinking compares. (PR #151366)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-sie-ubuntu-fast` running on `sie-linux-worker` while building `llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/144/builds/32097

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

```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'LLVM :: Transforms/CodeGenPrepare/dont-sink-scalable-vector-compare.ll' FAILED ********************
Exit Code: 2

Command Output (stderr):
--
/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt -passes='require<profile-summary>,function(codegenprepare)' -S < /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/llvm/test/Transforms/CodeGenPrepare/dont-sink-scalable-vector-compare.ll | /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/llvm/test/Transforms/CodeGenPrepare/dont-sink-scalable-vector-compare.ll # RUN: at line 2
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt '-passes=require<profile-summary>,function(codegenprepare)' -S
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/llvm/test/Transforms/CodeGenPrepare/dont-sink-scalable-vector-compare.ll
/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt: warning: failed to infer data layout: unable to get target for 'aarch64-unknown-linux-gnu', see --version and --triple.
/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt: WARNING: failed to create target machine for 'aarch64-unknown-linux-gnu': unable to get target for 'aarch64-unknown-linux-gnu', see --version and --triple.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.	Program arguments: /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt -passes=require<profile-summary>,function(codegenprepare) -S
1.	Running pass "function(codegenprepare)" on module "<stdin>"
2.	Running pass "codegenprepare" on function "do_not_sink_scalable_vector_compare"
 #0 0x00005861f47bec90 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt+0x34c2c90)
 #1 0x00005861f47bb93f llvm::sys::RunSignalHandlers() (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt+0x34bf93f)
 #2 0x00005861f47bba92 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
 #3 0x000078f6f6979520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00005861f2cdc4f6 llvm::CodeGenPreparePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt+0x19e04f6)
 #5 0x00005861f18bdc66 llvm::detail::PassModel<llvm::Function, llvm::CodeGenPreparePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) crtstuff.c:0:0
 #6 0x00005861f45a3a87 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt+0x32a7a87)
 #7 0x00005861f18bd8f6 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) crtstuff.c:0:0
 #8 0x00005861f45a3ff9 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt+0x32a7ff9)
 #9 0x00005861f180f3b6 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) crtstuff.c:0:0
#10 0x00005861f45a1da4 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt+0x32a5da4)
#11 0x00005861f181ad95 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool, bool) (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt+0x51ed95)
#12 0x00005861f180d54e optMain (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt+0x51154e)
#13 0x000078f6f6960d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#14 0x000078f6f6960e40 call_init ./csu/../csu/libc-start.c:128:20
#15 0x000078f6f6960e40 __libc_start_main ./csu/../csu/libc-start.c:379:5
#16 0x00005861f1803825 _start (/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt+0x507825)
FileCheck error: '<stdin>' is empty.
FileCheck command line:  /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/llvm/test/Transforms/CodeGenPrepare/dont-sink-scalable-vector-compare.ll

--

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


```

</details>

https://github.com/llvm/llvm-project/pull/151366