[clang] [llvm] [ARM] Add neon vector support for floor (PR #142559)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

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

Full details are available at: https://lab.llvm.org/buildbot/#/builders/3/builds/18242

<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 :: CodeGen/X86/sse2-intrinsics-fast-isel.ll' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
/buildbot/worker/arc-folder/build/bin/llc < /buildbot/worker/arc-folder/llvm-project/llvm/test/CodeGen/X86/sse2-intrinsics-fast-isel.ll -show-mc-encoding -fast-isel -mtriple=i386-unknown-unknown -mattr=+sse2 | /buildbot/worker/arc-folder/build/bin/FileCheck /buildbot/worker/arc-folder/llvm-project/llvm/test/CodeGen/X86/sse2-intrinsics-fast-isel.ll --check-prefixes=CHECK,X86,SSE,X86-SSE # RUN: at line 2
+ /buildbot/worker/arc-folder/build/bin/FileCheck /buildbot/worker/arc-folder/llvm-project/llvm/test/CodeGen/X86/sse2-intrinsics-fast-isel.ll --check-prefixes=CHECK,X86,SSE,X86-SSE
+ /buildbot/worker/arc-folder/build/bin/llc -show-mc-encoding -fast-isel -mtriple=i386-unknown-unknown -mattr=+sse2
LLVM ERROR: Cannot select: intrinsic %llvm.x86.sse2.clflush
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.	Program arguments: /buildbot/worker/arc-folder/build/bin/llc -show-mc-encoding -fast-isel -mtriple=i386-unknown-unknown -mattr=+sse2
1.	Running pass 'Function Pass Manager' on module '<stdin>'.
2.	Running pass 'X86 DAG->DAG Instruction Selection' on function '@test_mm_clflush'
 #0 0x00000000023158e8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/buildbot/worker/arc-folder/build/bin/llc+0x23158e8)
 #1 0x0000000002312c95 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
 #2 0x00007fab657d3630 __restore_rt sigaction.c:0:0
 #3 0x00007fab645233d7 raise (/usr/lib64/libc.so.6+0x363d7)
 #4 0x00007fab64524ac8 abort (/usr/lib64/libc.so.6+0x37ac8)
 #5 0x0000000000719e47 llvm::json::operator==(llvm::json::Value const&, llvm::json::Value const&) (.cold) JSON.cpp:0:0
 #6 0x00000000020a62b9 llvm::SelectionDAGISel::CannotYetSelect(llvm::SDNode*) (/buildbot/worker/arc-folder/build/bin/llc+0x20a62b9)
 #7 0x00000000020aad69 llvm::SelectionDAGISel::SelectCodeCommon(llvm::SDNode*, unsigned char const*, unsigned int) (/buildbot/worker/arc-folder/build/bin/llc+0x20aad69)
 #8 0x0000000000957bf7 (anonymous namespace)::X86DAGToDAGISel::Select(llvm::SDNode*) X86ISelDAGToDAG.cpp:0:0
 #9 0x00000000020a1b7f llvm::SelectionDAGISel::DoInstructionSelection() (/buildbot/worker/arc-folder/build/bin/llc+0x20a1b7f)
#10 0x00000000020b16f8 llvm::SelectionDAGISel::CodeGenAndEmitDAG() (/buildbot/worker/arc-folder/build/bin/llc+0x20b16f8)
#11 0x00000000020b4e4e llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/buildbot/worker/arc-folder/build/bin/llc+0x20b4e4e)
#12 0x00000000020b5fe5 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/buildbot/worker/arc-folder/build/bin/llc+0x20b5fe5)
#13 0x00000000020a139f llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) (/buildbot/worker/arc-folder/build/bin/llc+0x20a139f)
#14 0x00000000011fae77 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.0) MachineFunctionPass.cpp:0:0
#15 0x0000000001854282 llvm::FPPassManager::runOnFunction(llvm::Function&) (/buildbot/worker/arc-folder/build/bin/llc+0x1854282)
#16 0x0000000001854621 llvm::FPPassManager::runOnModule(llvm::Module&) (/buildbot/worker/arc-folder/build/bin/llc+0x1854621)
#17 0x0000000001855237 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/buildbot/worker/arc-folder/build/bin/llc+0x1855237)
#18 0x00000000007f6c82 compileModule(char**, llvm::LLVMContext&) llc.cpp:0:0
#19 0x0000000000722366 main (/buildbot/worker/arc-folder/build/bin/llc+0x722366)
#20 0x00007fab6450f555 __libc_start_main (/usr/lib64/libc.so.6+0x22555)
#21 0x00000000007ed1b6 _start (/buildbot/worker/arc-folder/build/bin/llc+0x7ed1b6)
/buildbot/worker/arc-folder/llvm-project/llvm/test/CodeGen/X86/sse2-intrinsics-fast-isel.ll:399:14: error: SSE-LABEL: expected string not found in input
; SSE-LABEL: test_mm_bsrli_si128:
             ^
<stdin>:170:21: note: scanning from here
test_mm_bslli_si128: # @test_mm_bslli_si128
                    ^
<stdin>:178:9: note: possible intended match here
 .globl test_mm_bsrli_si128 # 
        ^

Input file: <stdin>
Check file: /buildbot/worker/arc-folder/llvm-project/llvm/test/CodeGen/X86/sse2-intrinsics-fast-isel.ll

-dump-input=help explains the following input dump.
...

```

</details>

https://github.com/llvm/llvm-project/pull/142559