[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 `arc-builder` running on `arc-worker` while building `lldb,llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/3/builds/14248

<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 :: tools/dsymutil/swiftmodule.test' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
/buildbot/worker/arc-folder/build/bin/dsymutil -verbose -oso-prepend-path=/buildbot/worker/arc-folder/llvm-project/llvm/test/tools/dsymutil -y -o /buildbot/worker/arc-folder/build/test/tools/dsymutil/Output/swiftmodule.test.tmp.dSYM  /buildbot/worker/arc-folder/llvm-project/llvm/test/tools/dsymutil/swiftmodule.test | /buildbot/worker/arc-folder/build/bin/FileCheck /buildbot/worker/arc-folder/llvm-project/llvm/test/tools/dsymutil/swiftmodule.test # RUN: at line 1
+ /buildbot/worker/arc-folder/build/bin/dsymutil -verbose -oso-prepend-path=/buildbot/worker/arc-folder/llvm-project/llvm/test/tools/dsymutil -y -o /buildbot/worker/arc-folder/build/test/tools/dsymutil/Output/swiftmodule.test.tmp.dSYM /buildbot/worker/arc-folder/llvm-project/llvm/test/tools/dsymutil/swiftmodule.test
+ /buildbot/worker/arc-folder/build/bin/FileCheck /buildbot/worker/arc-folder/llvm-project/llvm/test/tools/dsymutil/swiftmodule.test
note: trying to open '/buildbot/worker/arc-folder/llvm-project/llvm/test/tools/dsymutil/Inputs/Binary.swiftmodule'
note: loaded object.
warning: Unable to open /buildbot/worker/arc-folder/llvm-project/llvm/test/tools/dsymutil/Inputs/Binary.swiftmodule The file was not recognized as a valid object file
note: trying to open '/buildbot/worker/arc-folder/llvm-project/llvm/test/tools/dsymutil/Inputs/FromInterface.swiftmodule'
note: loaded object.
warning: Unable to open /buildbot/worker/arc-folder/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: /buildbot/worker/arc-folder/build/test/tools/dsymutil/Output/swiftmodule.test.tmp.dSYM/Contents/Resources/DWARF/swiftmodule.test: The file was not recognized as a valid object file/buildbot/worker/arc-folder/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>:9:44: note: possible intended match here
 - filename: '/buildbot/worker/arc-folder/llvm-project/llvm/test/tools/dsymutil/Inputs/FromInterface.swiftmodule'
                                           ^

Input file: <stdin>
Check file: /buildbot/worker/arc-folder/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: '/buildbot/worker/arc-folder/llvm-project/llvm/test/tools/dsymutil/Inputs/Binary.swiftmodule' 
check:15'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            6:  timestamp: 0 
check:15'0     ~~~~~~~~~~~~~~
            7:  type: 50 
check:15'0     ~~~~~~~~~~
            8:  symbols: [] 
check:15'0     ~~~~~~~~~~~~~
            9:  - filename: '/buildbot/worker/arc-folder/llvm-project/llvm/test/tools/dsymutil/Inputs/FromInterface.swiftmodule' 
...

```

</details>

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