[llvm] [AMDGPU] Graph-based Module Splitting Rewrite (PR #104763)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `premerge-monolithic-linux` running on `premerge-linux-1` while building `llvm` at step 7 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/153/builds/7305

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

```
Step 7 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'LLVM :: tools/llvm-split/AMDGPU/declarations.ll' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
; ModuleID = '/build/buildbot/premerge-monolithic-linux/build/test/tools/llvm-split/AMDGPU/Output/declarations.ll.tmp1'
source_filename = "/build/buildbot/premerge-monolithic-linux/llvm-project/llvm/test/tools/llvm-split/AMDGPU/declarations.ll"

declare void @A()

declare void @B()

--
Command Output (stderr):
--
RUN: at line 1: /build/buildbot/premerge-monolithic-linux/build/bin/llvm-split -o /build/buildbot/premerge-monolithic-linux/build/test/tools/llvm-split/AMDGPU/Output/declarations.ll.tmp /build/buildbot/premerge-monolithic-linux/llvm-project/llvm/test/tools/llvm-split/AMDGPU/declarations.ll -j 2 -mtriple amdgcn-amd-amdhsa
+ /build/buildbot/premerge-monolithic-linux/build/bin/llvm-split -o /build/buildbot/premerge-monolithic-linux/build/test/tools/llvm-split/AMDGPU/Output/declarations.ll.tmp /build/buildbot/premerge-monolithic-linux/llvm-project/llvm/test/tools/llvm-split/AMDGPU/declarations.ll -j 2 -mtriple amdgcn-amd-amdhsa
RUN: at line 2: /build/buildbot/premerge-monolithic-linux/build/bin/llvm-dis -o - /build/buildbot/premerge-monolithic-linux/build/test/tools/llvm-split/AMDGPU/Output/declarations.ll.tmp0 | /build/buildbot/premerge-monolithic-linux/build/bin/FileCheck --check-prefix=CHECK0 /build/buildbot/premerge-monolithic-linux/llvm-project/llvm/test/tools/llvm-split/AMDGPU/declarations.ll
+ /build/buildbot/premerge-monolithic-linux/build/bin/llvm-dis -o - /build/buildbot/premerge-monolithic-linux/build/test/tools/llvm-split/AMDGPU/Output/declarations.ll.tmp0
+ /build/buildbot/premerge-monolithic-linux/build/bin/FileCheck --check-prefix=CHECK0 /build/buildbot/premerge-monolithic-linux/llvm-project/llvm/test/tools/llvm-split/AMDGPU/declarations.ll
RUN: at line 3: not /build/buildbot/premerge-monolithic-linux/build/bin/llvm-dis -o - /build/buildbot/premerge-monolithic-linux/build/test/tools/llvm-split/AMDGPU/Output/declarations.ll.tmp1
+ not /build/buildbot/premerge-monolithic-linux/build/bin/llvm-dis -o - /build/buildbot/premerge-monolithic-linux/build/test/tools/llvm-split/AMDGPU/Output/declarations.ll.tmp1

--

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


```

</details>

https://github.com/llvm/llvm-project/pull/104763