[clang] [llvm] AMDGPU: Move attributor into optimization pipeline (PR #83131)

[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 `clang,llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/3/builds/1447

Here is the relevant piece of the build log for the reference:
```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'Clang :: CodeGenHIP/default-attributes.hip' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 2: /buildbot/worker/arc-folder/build/bin/clang -cc1 -internal-isystem /buildbot/worker/arc-folder/build/lib/clang/19/include -nostdsysteminc -triple amdgcn-amd-amdhsa -x hip -fno-ident -fcuda-is-device     -emit-llvm -o - /buildbot/worker/arc-folder/llvm-project/clang/test/CodeGenHIP/default-attributes.hip | /buildbot/worker/arc-folder/build/bin/FileCheck -check-prefix=OPTNONE /buildbot/worker/arc-folder/llvm-project/clang/test/CodeGenHIP/default-attributes.hip
+ /buildbot/worker/arc-folder/build/bin/clang -cc1 -internal-isystem /buildbot/worker/arc-folder/build/lib/clang/19/include -nostdsysteminc -triple amdgcn-amd-amdhsa -x hip -fno-ident -fcuda-is-device -emit-llvm -o - /buildbot/worker/arc-folder/llvm-project/clang/test/CodeGenHIP/default-attributes.hip
+ /buildbot/worker/arc-folder/build/bin/FileCheck -check-prefix=OPTNONE /buildbot/worker/arc-folder/llvm-project/clang/test/CodeGenHIP/default-attributes.hip
RUN: at line 5: /buildbot/worker/arc-folder/build/bin/clang -cc1 -internal-isystem /buildbot/worker/arc-folder/build/lib/clang/19/include -nostdsysteminc -O3 -triple amdgcn-amd-amdhsa -x hip -fno-ident -fcuda-is-device     -emit-llvm -o - /buildbot/worker/arc-folder/llvm-project/clang/test/CodeGenHIP/default-attributes.hip | /buildbot/worker/arc-folder/build/bin/FileCheck -check-prefix=OPT /buildbot/worker/arc-folder/llvm-project/clang/test/CodeGenHIP/default-attributes.hip
+ /buildbot/worker/arc-folder/build/bin/FileCheck -check-prefix=OPT /buildbot/worker/arc-folder/llvm-project/clang/test/CodeGenHIP/default-attributes.hip
+ /buildbot/worker/arc-folder/build/bin/clang -cc1 -internal-isystem /buildbot/worker/arc-folder/build/lib/clang/19/include -nostdsysteminc -O3 -triple amdgcn-amd-amdhsa -x hip -fno-ident -fcuda-is-device -emit-llvm -o - /buildbot/worker/arc-folder/llvm-project/clang/test/CodeGenHIP/default-attributes.hip
/buildbot/worker/arc-folder/llvm-project/clang/test/CodeGenHIP/default-attributes.hip:55:9: error: OPT: expected string not found in input
// OPT: attributes #[[ATTR0]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) "amdgpu-no-agpr" "amdgpu-no-completion-action" "amdgpu-no-default-queue" "amdgpu-no-dispatch-id" "amdgpu-no-dispatch-ptr" "amdgpu-no-heap-ptr" "amdgpu-no-hostcall-ptr" "amdgpu-no-implicitarg-ptr" "amdgpu-no-lds-kernel-id" "amdgpu-no-multigrid-sync-arg" "amdgpu-no-queue-ptr" "amdgpu-no-workgroup-id-x" "amdgpu-no-workgroup-id-y" "amdgpu-no-workgroup-id-z" "amdgpu-no-workitem-id-x" "amdgpu-no-workitem-id-y" "amdgpu-no-workitem-id-z" "amdgpu-waves-per-eu"="4,10" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "uniform-work-group-size"="false" }
        ^
<stdin>:19:10: note: scanning from here
 ret void
         ^
<stdin>:19:10: note: with "ATTR0" equal to "0"
 ret void
         ^

Input file: <stdin>
Check file: /buildbot/worker/arc-folder/llvm-project/clang/test/CodeGenHIP/default-attributes.hip

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

Input was:
<<<<<<
            .
            .
            .
           14: } 
           15:  
           16: ; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) 
           17: define dso_local amdgpu_kernel void @_Z6kernelv() local_unnamed_addr #1 { 
           18: entry: 
           19:  ret void 
check:55'0              X error: no match found
check:55'1                with "ATTR0" equal to "0"
           20: } 
check:55'0     ~~
           21:  
check:55'0     ~
           22: attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) "no-trapping-math"="true" "stack-protector-buffer-size"="8" } 
check:55'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           23: attributes #1 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) "amdgpu-flat-work-group-size"="1,1024" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "uniform-work-group-size"="true" } 
check:55'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           24:  
check:55'0     ~
            .
...

```

https://github.com/llvm/llvm-project/pull/83131