[llvm] [LTO] Fix a crash with thin LTO caching and asm output (PR #138203)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-nvptx64-nvidia-ubuntu` running on `as-builder-7` while building `llvm` at step 6 "test-build-unified-tree-check-llvm".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/160/builds/17438

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

```
Step 6 (test-build-unified-tree-check-llvm) failure: test (failure)
******************** TEST 'LLVM :: ThinLTO/X86/cache-emit-asm.ll' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
rm -rf /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx64-nvidia-ubuntu/build/test/ThinLTO/X86/Output/cache-emit-asm.ll.tmp.cache # RUN: at line 5
+ rm -rf /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx64-nvidia-ubuntu/build/test/ThinLTO/X86/Output/cache-emit-asm.ll.tmp.cache
/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx64-nvidia-ubuntu/build/bin/opt -module-hash -module-summary -thinlto-bc /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx64-nvidia-ubuntu/llvm-project/llvm/test/ThinLTO/X86/cache-emit-asm.ll -o /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx64-nvidia-ubuntu/build/test/ThinLTO/X86/Output/cache-emit-asm.ll.tmp1.bc # RUN: at line 6
+ /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx64-nvidia-ubuntu/build/bin/opt -module-hash -module-summary -thinlto-bc /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx64-nvidia-ubuntu/llvm-project/llvm/test/ThinLTO/X86/cache-emit-asm.ll -o /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx64-nvidia-ubuntu/build/test/ThinLTO/X86/Output/cache-emit-asm.ll.tmp1.bc
ld.lld --thinlto-cache-dir=/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx64-nvidia-ubuntu/build/test/ThinLTO/X86/Output/cache-emit-asm.ll.tmp.cache --lto-emit-asm /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx64-nvidia-ubuntu/build/test/ThinLTO/X86/Output/cache-emit-asm.ll.tmp1.bc # RUN: at line 7
+ ld.lld --thinlto-cache-dir=/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx64-nvidia-ubuntu/build/test/ThinLTO/X86/Output/cache-emit-asm.ll.tmp.cache --lto-emit-asm /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx64-nvidia-ubuntu/build/test/ThinLTO/X86/Output/cache-emit-asm.ll.tmp1.bc
ld.lld: error: Invalid summary version 12. Version should be in the range [1-9].

--

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


```

</details>

https://github.com/llvm/llvm-project/pull/138203