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/14713

<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 'Clang :: Headers/gpuintrin_lang.c' FAILED 
********************
Exit Code: 1

Command Output (stderr):
--
/buildbot/worker/arc-folder/build/bin/clang -cc1 -internal-isystem 
/buildbot/worker/arc-folder/build/lib/clang/21/include -nostdsysteminc 
-internal-isystem 
/buildbot/worker/arc-folder/llvm-project/clang/test/Headers/Inputs/include    
-internal-isystem 
/buildbot/worker/arc-folder/llvm-project/clang/test/Headers/../../lib/Headers/cuda_wrappers
    -internal-isystem 
/buildbot/worker/arc-folder/llvm-project/clang/test/Headers/../../lib/Headers/  
  -fcuda-is-device -triple nvptx64 -emit-llvm 
/buildbot/worker/arc-folder/llvm-project/clang/test/Headers/gpuintrin_lang.c -o 
-  | /buildbot/worker/arc-folder/build/bin/FileCheck 
/buildbot/worker/arc-folder/llvm-project/clang/test/Headers/gpuintrin_lang.c 
--check-prefix=CUDA # RUN: at line 2
+ /buildbot/worker/arc-folder/build/bin/clang -cc1 -internal-isystem 
/buildbot/worker/arc-folder/build/lib/clang/21/include -nostdsysteminc 
-internal-isystem 
/buildbot/worker/arc-folder/llvm-project/clang/test/Headers/Inputs/include 
-internal-isystem 
/buildbot/worker/arc-folder/llvm-project/clang/test/Headers/../../lib/Headers/cuda_wrappers
 -internal-isystem 
/buildbot/worker/arc-folder/llvm-project/clang/test/Headers/../../lib/Headers/ 
-fcuda-is-device -triple nvptx64 -emit-llvm 
/buildbot/worker/arc-folder/llvm-project/clang/test/Headers/gpuintrin_lang.c -o 
-
+ /buildbot/worker/arc-folder/build/bin/FileCheck 
/buildbot/worker/arc-folder/llvm-project/clang/test/Headers/gpuintrin_lang.c 
--check-prefix=CUDA
/buildbot/worker/arc-folder/llvm-project/clang/test/Headers/gpuintrin_lang.c:39:15:
 error: CUDA-NEXT: expected string not found in input
// CUDA-NEXT: [[TMP0:%.*]] = call range(i32 0, 1024) i32 
@llvm.nvvm.read.ptx.sreg.tid.x()
              ^
<stdin>:8:7: note: scanning from here
entry:
      ^
<stdin>:9:2: note: possible intended match here
 %0 = call i32 @llvm.nvvm.read.ptx.sreg.tid.x()
 ^

Input file: <stdin>
Check file: 
/buildbot/worker/arc-folder/llvm-project/clang/test/Headers/gpuintrin_lang.c

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

Input was:
<<<<<<
           1: ; ModuleID = 
'/buildbot/worker/arc-folder/llvm-project/clang/test/Headers/gpuintrin_lang.c' 
           2: source_filename = 
"/buildbot/worker/arc-folder/llvm-project/clang/test/Headers/gpuintrin_lang.c" 
           3: target datalayout = 
"e-p6:32:32-i64:64-i128:128-v16:16-v32:32-n16:32:64" 
           4: target triple = "nvptx64" 
           5:  
           6: ; Function Attrs: convergent noinline nounwind optnone 
           7: define dso_local i32 @foo() #0 { 
           8: entry: 
next:39'0           X error: no match found
           9:  %0 = call i32 @llvm.nvvm.read.ptx.sreg.tid.x() 
next:39'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
next:39'1      ?                                               possible 
intended match
          10:  ret i32 %0 
next:39'0     ~~~~~~~~~~~~
          11: } 
next:39'0     ~~
          12:  
next:39'0     ~
          13: ; Function Attrs: nocallback nofree nosync nounwind speculatable 
willreturn memory(none) 
next:39'0     
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          14: declare noundef i32 @llvm.nvvm.read.ptx.sreg.tid.x() #1 
next:39'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           .
           .
           .
...

```

</details>

https://github.com/llvm/llvm-project/pull/136196
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