[clang] [llvm] [AArch64] Implement NEON vscale intrinsics (PR #100347)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ve-ninja` running on `hpce-ve-main` while building `clang,llvm` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/12/builds/6660

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

```
Step 4 (annotate) failure: 'python ../llvm-zorg/zorg/buildbot/builders/annotated/ve-linux.py ...' (failure)
...
[293/299] Linking CXX executable tools/clang/unittests/Driver/ClangDriverTests
[294/299] Linking CXX executable tools/clang/unittests/Tooling/ToolingTests
[295/299] Linking CXX executable tools/clang/unittests/Frontend/FrontendTests
[296/299] Linking CXX executable tools/clang/unittests/CodeGen/ClangCodeGenTests
[297/299] Linking CXX executable tools/clang/unittests/Interpreter/ExceptionTests/ClangReplInterpreterExceptionTests
[298/299] Linking CXX executable tools/clang/unittests/Interpreter/ClangReplInterpreterTests
[298/299] Running the Clang regression tests
-- Testing: 21108 tests, 48 workers --
llvm-lit: /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using clang: /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/clang
Testing:  0.. 10.. 20.
FAIL: Clang :: CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c (5672 of 21108)
******************** TEST 'Clang :: CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c' FAILED ********************
Exit Code: 2

Command Output (stderr):
--
RUN: at line 4: /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/clang -cc1 -internal-isystem /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/lib/clang/20/include -nostdsysteminc -triple aarch64-none-linux-gnu -target-feature +neon -target-feature +fp8 -O3 -emit-llvm -o - /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/clang/test/CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c | /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/FileCheck /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/clang/test/CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c
+ /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/FileCheck /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/clang/test/CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c
+ /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/clang -cc1 -internal-isystem /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/lib/clang/20/include -nostdsysteminc -triple aarch64-none-linux-gnu -target-feature +neon -target-feature +fp8 -O3 -emit-llvm -o - /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/clang/test/CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c
/scratch/buildbot/bothome/clang-ve-ninja/llvm-project/clang/test/CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c:2:10: fatal error: 'arm_neon.h' file not found
    2 | #include <arm_neon.h>
      |          ^~~~~~~~~~~~
1 error generated.
FileCheck error: '<stdin>' is empty.
FileCheck command line:  /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/FileCheck /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/clang/test/CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c

--

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.. 
********************
Failed Tests (1):
  Clang :: CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c


Testing Time: 55.57s

Total Discovered Tests: 38083
  Skipped          :    10 (0.03%)
  Unsupported      :  3777 (9.92%)
  Passed           : 34270 (89.99%)
  Expectedly Failed:    25 (0.07%)
  Failed           :     1 (0.00%)
FAILED: tools/clang/test/CMakeFiles/check-clang /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/tools/clang/test/CMakeFiles/check-clang 
cd /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/tools/clang/test && /home/buildbot/sandbox/bin/python3 /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/./bin/llvm-lit -sv --param USE_Z3_SOLVER=0 /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/tools/clang/test
ninja: build stopped: subcommand failed.
make: *** [check-llvm] Error 1
['make', '-f', '/scratch/buildbot/bothome/clang-ve-ninja/llvm-zorg/zorg/buildbot/builders/annotated/ve-linux-steps.make', 'check-llvm', 'BUILDROOT=/scratch/buildbot/bothome/clang-ve-ninja/build'] exited with return code 2.
The build step threw an exception...
Step 8 (check-llvm) failure: check-llvm (failure)
...
[293/299] Linking CXX executable tools/clang/unittests/Driver/ClangDriverTests
[294/299] Linking CXX executable tools/clang/unittests/Tooling/ToolingTests
[295/299] Linking CXX executable tools/clang/unittests/Frontend/FrontendTests
[296/299] Linking CXX executable tools/clang/unittests/CodeGen/ClangCodeGenTests
[297/299] Linking CXX executable tools/clang/unittests/Interpreter/ExceptionTests/ClangReplInterpreterExceptionTests
[298/299] Linking CXX executable tools/clang/unittests/Interpreter/ClangReplInterpreterTests
[298/299] Running the Clang regression tests
-- Testing: 21108 tests, 48 workers --
llvm-lit: /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using clang: /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/clang
Testing:  0.. 10.. 20.
FAIL: Clang :: CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c (5672 of 21108)
******************** TEST 'Clang :: CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c' FAILED ********************
Exit Code: 2

Command Output (stderr):
--
RUN: at line 4: /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/clang -cc1 -internal-isystem /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/lib/clang/20/include -nostdsysteminc -triple aarch64-none-linux-gnu -target-feature +neon -target-feature +fp8 -O3 -emit-llvm -o - /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/clang/test/CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c | /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/FileCheck /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/clang/test/CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c
+ /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/FileCheck /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/clang/test/CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c
+ /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/clang -cc1 -internal-isystem /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/lib/clang/20/include -nostdsysteminc -triple aarch64-none-linux-gnu -target-feature +neon -target-feature +fp8 -O3 -emit-llvm -o - /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/clang/test/CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c
/scratch/buildbot/bothome/clang-ve-ninja/llvm-project/clang/test/CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c:2:10: fatal error: 'arm_neon.h' file not found
    2 | #include <arm_neon.h>
      |          ^~~~~~~~~~~~
1 error generated.
FileCheck error: '<stdin>' is empty.
FileCheck command line:  /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/FileCheck /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/clang/test/CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c

--

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.. 
********************
Failed Tests (1):
  Clang :: CodeGen/aarch64-neon-fp8-intrinsics/acle_neon_fscale.c


Testing Time: 55.57s

Total Discovered Tests: 38083
  Skipped          :    10 (0.03%)
  Unsupported      :  3777 (9.92%)
  Passed           : 34270 (89.99%)
  Expectedly Failed:    25 (0.07%)
  Failed           :     1 (0.00%)
FAILED: tools/clang/test/CMakeFiles/check-clang /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/tools/clang/test/CMakeFiles/check-clang 
cd /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/tools/clang/test && /home/buildbot/sandbox/bin/python3 /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/./bin/llvm-lit -sv --param USE_Z3_SOLVER=0 /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/tools/clang/test
ninja: build stopped: subcommand failed.
make: *** [check-llvm] Error 1
['make', '-f', '/scratch/buildbot/bothome/clang-ve-ninja/llvm-zorg/zorg/buildbot/builders/annotated/ve-linux-steps.make', 'check-llvm', 'BUILDROOT=/scratch/buildbot/bothome/clang-ve-ninja/build'] exited with return code 2.
The build step threw an exception...

```

</details>

https://github.com/llvm/llvm-project/pull/100347