[llvm] [AMDGPU][LTO] Assume closed world after linking (PR #105845)

Sun Aug 25 11:11:21 PDT 2024

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-sie-ubuntu-fast` running on `sie-linux-worker` while building `llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/144/builds/5430

<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 :: LTO/AMDGPU/gpu-rdc-amdgpu-attrs.ll' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 1: /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt -O3 -debug-only=amdgpu-attributor -S -o - /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/llvm/test/LTO/AMDGPU/gpu-rdc-amdgpu-attrs.ll 2>&1 | /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/llvm/test/LTO/AMDGPU/gpu-rdc-amdgpu-attrs.ll --check-prefix=PRE-LINK
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt -O3 -debug-only=amdgpu-attributor -S -o - /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/llvm/test/LTO/AMDGPU/gpu-rdc-amdgpu-attrs.ll
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/FileCheck /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/llvm/test/LTO/AMDGPU/gpu-rdc-amdgpu-attrs.ll --check-prefix=PRE-LINK
[1m/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/llvm/test/LTO/AMDGPU/gpu-rdc-amdgpu-attrs.ll:6:13: [0m[0;1;31merror: [0m[1mPRE-LINK: expected string not found in input
[0m; PRE-LINK: Module {{.*}} is not assumed to be a closed world.
[0;1;32m            ^
[0m[1m<stdin>:1:1: [0m[0;1;30mnote: [0m[1mscanning from here
[0m/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt: warning: failed to infer data layout: unable to get target for 'amdgcn-amd-amdhsa', see --version and --triple.
[0;1;32m^
[0m[1m<stdin>:1:95: [0m[0;1;30mnote: [0m[1mpossible intended match here
[0m/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt: warning: failed to infer data layout: unable to get target for 'amdgcn-amd-amdhsa', see --version and --triple.
[0;1;32m                                                                                              ^
[0m
Input file: <stdin>
Check file: /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/llvm/test/LTO/AMDGPU/gpu-rdc-amdgpu-attrs.ll

-dump-input=help explains the following input dump.

Input was:
<<<<<<
[1m[0m[0;1;30m           1: [0m[1m[0;1;46m/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt: warning: failed to infer data layout: unable to get target for 'amdgcn-amd-amdhsa', see --version and --triple. [0m
[0;1;31mcheck:6'0     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
[0m[0;1;35mcheck:6'1                                                                                                   ?                                                                                                possible intended match
[0m[0;1;30m           2: [0m[1m[0;1;46m/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/opt: WARNING: failed to create target machine for 'amdgcn-amd-amdhsa': unable to get target for 'amdgcn-amd-amdhsa', see --version and --triple. [0m
[0;1;31mcheck:6'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m           3: [0m[1m[0;1;46m; ModuleID = '/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/llvm/test/LTO/AMDGPU/gpu-rdc-amdgpu-attrs.ll' [0m
[0;1;31mcheck:6'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m           4: [0m[1m[0;1;46msource_filename = "/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/llvm/test/LTO/AMDGPU/gpu-rdc-amdgpu-attrs.ll" [0m
[0;1;31mcheck:6'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m           5: [0m[1m[0;1;46mtarget triple = "amdgcn-amd-amdhsa" [0m
[0;1;31mcheck:6'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m           6: [0m[1m[0;1;46m [0m
[0;1;31mcheck:6'0     ~
[0m[0;1;30m           7: [0m[1m[0;1;46m; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) [0m
[0;1;31mcheck:6'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m           8: [0m[1m[0;1;46mdefine hidden noundef i32 @_Z3foov() local_unnamed_addr #0 { [0m
[0;1;31mcheck:6'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[0m[0;1;30m           9: [0m[1m[0;1;46m ret i32 1 [0m
[0;1;31mcheck:6'0     ~~~~~~~~~~~
[0m[0;1;30m          10: [0m[1m[0;1;46m} [0m
[0;1;31mcheck:6'0     ~~
[0m[0;1;30m          11: [0m[1m[0;1;46m [0m
[0;1;31mcheck:6'0     ~
[0m[0;1;30m          12: [0m[1m[0;1;46mattributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) } [0m
[0;1;31mcheck:6'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
...

```
</details>

https://github.com/llvm/llvm-project/pull/105845