[llvm] [AArch64][machine-scheduler][Neoverse-N2] fdiv is blocking (PR #119206)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `ml-opt-dev-x86-64` running on `ml-opt-dev-x86-64-b2` while building `llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/137/builds/11124

<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 :: ExecutionEngine/JITLink/x86-64/COFF_nolibrary_search.s' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 1: rm -rf /b/ml-opt-dev-x86-64-b1/build/test/ExecutionEngine/JITLink/x86-64/Output/COFF_nolibrary_search.s.tmp && mkdir -p /b/ml-opt-dev-x86-64-b1/build/test/ExecutionEngine/JITLink/x86-64/Output/COFF_nolibrary_search.s.tmp
+ rm -rf /b/ml-opt-dev-x86-64-b1/build/test/ExecutionEngine/JITLink/x86-64/Output/COFF_nolibrary_search.s.tmp
+ mkdir -p /b/ml-opt-dev-x86-64-b1/build/test/ExecutionEngine/JITLink/x86-64/Output/COFF_nolibrary_search.s.tmp
RUN: at line 2: /b/ml-opt-dev-x86-64-b1/build/bin/yaml2obj /b/ml-opt-dev-x86-64-b1/llvm-project/llvm/test/ExecutionEngine/JITLink/x86-64/Inputs/COFF_weak_nolibrary_serach_def.yaml -o /b/ml-opt-dev-x86-64-b1/build/test/ExecutionEngine/JITLink/x86-64/Output/COFF_nolibrary_search.s.tmp/COFF_weak.o
+ /b/ml-opt-dev-x86-64-b1/build/bin/yaml2obj /b/ml-opt-dev-x86-64-b1/llvm-project/llvm/test/ExecutionEngine/JITLink/x86-64/Inputs/COFF_weak_nolibrary_serach_def.yaml -o /b/ml-opt-dev-x86-64-b1/build/test/ExecutionEngine/JITLink/x86-64/Output/COFF_nolibrary_search.s.tmp/COFF_weak.o
RUN: at line 3: /b/ml-opt-dev-x86-64-b1/build/bin/llvm-mc -filetype=obj -triple=x86_64-windows-msvc /b/ml-opt-dev-x86-64-b1/llvm-project/llvm/test/ExecutionEngine/JITLink/x86-64/COFF_nolibrary_search.s -o /b/ml-opt-dev-x86-64-b1/build/test/ExecutionEngine/JITLink/x86-64/Output/COFF_nolibrary_search.s.tmp/COFF_main.o
+ /b/ml-opt-dev-x86-64-b1/build/bin/llvm-mc -filetype=obj -triple=x86_64-windows-msvc /b/ml-opt-dev-x86-64-b1/llvm-project/llvm/test/ExecutionEngine/JITLink/x86-64/COFF_nolibrary_search.s -o /b/ml-opt-dev-x86-64-b1/build/test/ExecutionEngine/JITLink/x86-64/Output/COFF_nolibrary_search.s.tmp/COFF_main.o
RUN: at line 4: not /b/ml-opt-dev-x86-64-b1/build/bin/llvm-jitlink -noexec -abs __ImageBase=0xfff00000  -slab-allocate 100Kb -slab-address 0xfff00000 -slab-page-size 4096  /b/ml-opt-dev-x86-64-b1/build/test/ExecutionEngine/JITLink/x86-64/Output/COFF_nolibrary_search.s.tmp/COFF_weak.o /b/ml-opt-dev-x86-64-b1/build/test/ExecutionEngine/JITLink/x86-64/Output/COFF_nolibrary_search.s.tmp/COFF_main.o 2>&1 | /b/ml-opt-dev-x86-64-b1/build/bin/FileCheck /b/ml-opt-dev-x86-64-b1/llvm-project/llvm/test/ExecutionEngine/JITLink/x86-64/COFF_nolibrary_search.s
+ not /b/ml-opt-dev-x86-64-b1/build/bin/llvm-jitlink -noexec -abs __ImageBase=0xfff00000 -slab-allocate 100Kb -slab-address 0xfff00000 -slab-page-size 4096 /b/ml-opt-dev-x86-64-b1/build/test/ExecutionEngine/JITLink/x86-64/Output/COFF_nolibrary_search.s.tmp/COFF_weak.o /b/ml-opt-dev-x86-64-b1/build/test/ExecutionEngine/JITLink/x86-64/Output/COFF_nolibrary_search.s.tmp/COFF_main.o
+ /b/ml-opt-dev-x86-64-b1/build/bin/FileCheck /b/ml-opt-dev-x86-64-b1/llvm-project/llvm/test/ExecutionEngine/JITLink/x86-64/COFF_nolibrary_search.s

--

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


```

</details>

https://github.com/llvm/llvm-project/pull/119206