[llvm] [AArch64][GISel] Regbank G_BITCAST using src regbank. (PR #191522)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `lldb-aarch64-windows` running on `linaro-armv8-windows-msvc-05` while building `llvm` at step 6 "test".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/141/builds/17506

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

```
Step 6 (test) failure: build (failure)
...
UNSUPPORTED: lldb-api :: python_api/event/TestEvents.py (1154 of 2512)
PASS: lldb-api :: python_api/debugger/TestDebuggerAPI.py (1155 of 2512)
UNSUPPORTED: lldb-api :: python_api/exprpath_synthetic/TestExprPathSynthetic.py (1156 of 2512)
PASS: lldb-api :: python_api/exprpath_register/TestExprPathRegisters.py (1157 of 2512)
PASS: lldb-api :: python_api/file_handle/TestFileHandle.py (1158 of 2512)
PASS: lldb-api :: python_api/filespec/TestFileSpecAPI.py (1159 of 2512)
PASS: lldb-api :: python_api/find_in_memory/TestFindInMemory.py (1160 of 2512)
PASS: lldb-api :: python_api/findvalue_duplist/TestSBFrameFindValue.py (1161 of 2512)
PASS: lldb-api :: python_api/find_in_memory/TestFindRangesInMemory.py (1162 of 2512)
PASS: lldb-api :: python_api/format/TestFormat.py (1163 of 2512)
FAIL: lldb-api :: python_api/frame/TestFrames.py (1164 of 2512)
******************** TEST 'lldb-api :: python_api/frame/TestFrames.py' FAILED ********************
Script:
--
C:/Users/tcwg/scoop/apps/python/current/python.exe C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/llvm-project/lldb\test\API\dotest.py -u CXXFLAGS -u CFLAGS --env LLVM_LIBS_DIR=C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./lib --env LLVM_INCLUDE_DIR=C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/include --env LLVM_TOOLS_DIR=C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin --triple aarch64-pc-windows-msvc --build-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/lldb-test-build.noindex --lldb-module-cache-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/lldb-test-build.noindex/module-cache-lldb\lldb-api --clang-module-cache-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/lldb-test-build.noindex/module-cache-clang\lldb-api --executable C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin/lldb.exe --compiler C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin/clang.exe --dsymutil C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin/dsymutil.exe --make C:/Users/tcwg/scoop/shims/make.exe --llvm-tools-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin --lldb-obj-root C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/tools/lldb --lldb-libs-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./lib --cmake-build-type Release --skip-category=watchpoint --env LLDB_LAUNCH_FLAG_USE_PIPES=1 C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\llvm-project\lldb\test\API\python_api\frame -p TestFrames.py
--
Exit Code: 1

Command Output (stdout):
--
lldb version 23.0.0git (https://github.com/llvm/llvm-project.git revision 0d69fb3b995151ebbd83b03e94f7a301c7482b30)
  clang revision 0d69fb3b995151ebbd83b03e94f7a301c7482b30
  llvm revision 0d69fb3b995151ebbd83b03e94f7a301c7482b30
Skipping the following test categories: watchpoint, libc++, libstdcxx, dwo, dsym, gmodules, debugserver, objc, fork, pexpect


--
Command Output (stderr):
--
UNSUPPORTED: LLDB (C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\build\bin\clang.exe-aarch64) :: test_frame_api_IsEqual_dsym (TestFrames.FrameAPITestCase.test_frame_api_IsEqual_dsym) (test case does not fall in any category of interest for this run) 

PASS: LLDB (C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\build\bin\clang.exe-aarch64) :: test_frame_api_IsEqual_dwarf (TestFrames.FrameAPITestCase.test_frame_api_IsEqual_dwarf)

UNSUPPORTED: LLDB (C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\build\bin\clang.exe-aarch64) :: test_frame_api_IsEqual_dwo (TestFrames.FrameAPITestCase.test_frame_api_IsEqual_dwo) (test case does not fall in any category of interest for this run) 

UNSUPPORTED: LLDB (C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\build\bin\clang.exe-aarch64) :: test_frame_api_boundary_condition_dsym (TestFrames.FrameAPITestCase.test_frame_api_boundary_condition_dsym) (test case does not fall in any category of interest for this run) 

PASS: LLDB (C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\build\bin\clang.exe-aarch64) :: test_frame_api_boundary_condition_dwarf (TestFrames.FrameAPITestCase.test_frame_api_boundary_condition_dwarf)

UNSUPPORTED: LLDB (C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\build\bin\clang.exe-aarch64) :: test_frame_api_boundary_condition_dwo (TestFrames.FrameAPITestCase.test_frame_api_boundary_condition_dwo) (test case does not fall in any category of interest for this run) 

UNSUPPORTED: LLDB (C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\build\bin\clang.exe-aarch64) :: test_get_arg_vals_for_call_stack_dsym (TestFrames.FrameAPITestCase.test_get_arg_vals_for_call_stack_dsym) (test case does not fall in any category of interest for this run) 

FAIL: LLDB (C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\build\bin\clang.exe-aarch64) :: test_get_arg_vals_for_call_stack_dwarf (TestFrames.FrameAPITestCase.test_get_arg_vals_for_call_stack_dwarf)

Log Files:

 - C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\build\lldb-test-build.noindex\python_api\frame\TestFrames\Failure_test_get_arg_vals_for_call_stack_dwarf.log


```

</details>

https://github.com/llvm/llvm-project/pull/191522