llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-aarch64-darwin` 
running on `doug-worker-5` while building `clang,llvm` at step 6 
"test-build-unified-tree-check-all".

Full details are available at: 
https://lab.llvm.org/buildbot/#/builders/190/builds/18560

<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):
--
/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/clang -cc1 
-internal-isystem 
/Users/buildbot/buildbot-root/aarch64-darwin/build/lib/clang/21/include 
-nostdsysteminc -internal-isystem 
/Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/Headers/Inputs/include
    -internal-isystem 
/Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/Headers/../../lib/Headers/cuda_wrappers
    -internal-isystem 
/Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/Headers/../../lib/Headers/
    -fcuda-is-device -triple nvptx64 -emit-llvm 
/Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/Headers/gpuintrin_lang.c
 -o -  | /Users/buildbot/buildbot-root/aarch64-darwin/build/bin/FileCheck 
/Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/Headers/gpuintrin_lang.c
 --check-prefix=CUDA # RUN: at line 2
+ /Users/buildbot/buildbot-root/aarch64-darwin/build/bin/clang -cc1 
-internal-isystem 
/Users/buildbot/buildbot-root/aarch64-darwin/build/lib/clang/21/include 
-nostdsysteminc -internal-isystem 
/Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/Headers/Inputs/include
 -internal-isystem 
/Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/Headers/../../lib/Headers/cuda_wrappers
 -internal-isystem 
/Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/Headers/../../lib/Headers/
 -fcuda-is-device -triple nvptx64 -emit-llvm 
/Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/Headers/gpuintrin_lang.c
 -o -
+ /Users/buildbot/buildbot-root/aarch64-darwin/build/bin/FileCheck 
/Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/Headers/gpuintrin_lang.c
 --check-prefix=CUDA
/Users/buildbot/buildbot-root/aarch64-darwin/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: 
/Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/Headers/gpuintrin_lang.c

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

Input was:
<<<<<<
            1: ; ModuleID = 
'/Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/Headers/gpuintrin_lang.c'
 
            2: source_filename = 
"/Users/buildbot/buildbot-root/aarch64-darwin/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 
{ 
label:36'0     ^~~~~~~~~~~~~~~~~~~~~~~~~~
label:36'1     ^~~~~~~~~~~~~~~~~~~~~~~~~~
same:37'0                                ^~~~~~
same:37'1                                   ^    captured var 
"ATTR0"
            8: entry: 
next:38'0      ^~~~~~
next:38'1      ^~~~~~  captured var "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) 
...

```

</details>

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