[lldb] [llvm] [dsymutil] Avoid copying binary swiftmodules built from textual (PR #134719)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-nvptx-nvidia-win` running on `as-builder-8` while building `lldb,llvm` at step 7 "test-build-unified-tree-check-llvm".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/54/builds/8065

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

```
Step 7 (test-build-unified-tree-check-llvm) failure: test (failure)
******************** TEST 'LLVM :: tools/dsymutil/swiftmodule.test' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 1
c:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\build\bin\dsymutil.exe -verbose -oso-prepend-path=C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test\tools\dsymutil -y -o C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\build\test\tools\dsymutil\Output\swiftmodule.test.tmp.dSYM  C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test\tools\dsymutil\swiftmodule.test | c:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\build\bin\filecheck.exe C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test\tools\dsymutil\swiftmodule.test
# executed command: 'c:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\build\bin\dsymutil.exe' -verbose '-oso-prepend-path=C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test\tools\dsymutil' -y -o 'C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\build\test\tools\dsymutil\Output\swiftmodule.test.tmp.dSYM' 'C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test\tools\dsymutil\swiftmodule.test'
# .---command stderr------------
# | note: trying to open 'C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test\tools\dsymutil/Inputs/Binary.swiftmodule'
# | note: loaded object.
# | warning: Unable to open C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test\tools\dsymutil/Inputs/Binary.swiftmodule The file was not recognized as a valid object file
# | note: trying to open 'C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test\tools\dsymutil/Inputs/FromInterface.swiftmodule'
# | note: loaded object.
# | warning: Unable to open C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test\tools\dsymutil/Inputs/FromInterface.swiftmodule The file was not recognized as a valid object file
# | error: unable to get target for 'arm64-apple-darwin', see --version and --triple.
# | note: while processing dwarf streamer init
# | error: C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\build\test\tools\dsymutil\Output\swiftmodule.test.tmp.dSYM\Contents\Resources\DWARF\swiftmodule.test: The file was not recognized as a valid object file
# `-----------------------------
# error: command failed with exit status: 1
# executed command: 'c:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\build\bin\filecheck.exe' 'C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test\tools\dsymutil\swiftmodule.test'
# .---command stderr------------
# | C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test\tools\dsymutil\swiftmodule.test:15:10: error: CHECK: expected string not found in input
# | # CHECK: Skipping compiled textual Swift interface: {{.*}}/Inputs/FromInterface.swiftmodule
# |          ^
# | <stdin>:1:1: note: scanning from here
# | ---
# | ^
# | <stdin>:9:63: note: possible intended match here
# |  - filename: 'C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test\tools\dsymutil/Inputs/FromInterface.swiftmodule'
# |                                                               ^
# | 
# | Input file: <stdin>
# | Check file: C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test\tools\dsymutil\swiftmodule.test
# | 
# | -dump-input=help explains the following input dump.
# | 
# | Input was:
# | <<<<<<
# |             1: --- 
# | check:15'0     X~~~ error: no match found
# |             2: triple: 'arm64-apple-darwin' 
# | check:15'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |             3: binary-path: '' 
# | check:15'0     ~~~~~~~~~~~~~~~~
# |             4: objects: 
# | check:15'0     ~~~~~~~~~
# |             5:  - filename: 'C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test\tools\dsymutil/Inputs/Binary.swiftmodule' 
# | check:15'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |             6:  timestamp: 0 
...

```

</details>

https://github.com/llvm/llvm-project/pull/134719