[clang] [llvm] Reland "[HLSL] Implement the `reflect` HLSL function" (PR #123853)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-aarch64-linux-bootstrap-hwasan` running on `sanitizer-buildbot11` while building `clang,llvm` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/55/builds/5962

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

```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 86094 tests, 72 workers --
Testing:  0.. 10.. 20.. 30.. 40..
FAIL: LLVM :: CodeGen/SPIRV/opencl/reflect-error.ll (42879 of 86094)
******************** TEST 'LLVM :: CodeGen/SPIRV/opencl/reflect-error.ll' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 1: not /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/test/CodeGen/SPIRV/opencl/reflect-error.ll -o /dev/null 2>&1 | /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/test/CodeGen/SPIRV/opencl/reflect-error.ll
+ not /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/test/CodeGen/SPIRV/opencl/reflect-error.ll -o /dev/null
+ /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/test/CodeGen/SPIRV/opencl/reflect-error.ll

--

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.. 
Slowest Tests:
--------------------------------------------------------------------------
58.01s: Clang :: Driver/fsanitize.c
43.37s: Clang :: Preprocessor/riscv-target-features.c
39.83s: Clang :: Driver/arm-cortex-cpus-2.c
39.12s: Clang :: Driver/arm-cortex-cpus-1.c
36.02s: LLVM :: CodeGen/AMDGPU/sched-group-barrier-pipeline-solver.mir
35.27s: Clang :: OpenMP/target_defaultmap_codegen_01.cpp
34.50s: Clang :: OpenMP/target_update_codegen.cpp
31.41s: Clang :: Preprocessor/arm-target-features.c
30.84s: Clang :: Preprocessor/aarch64-target-features.c
27.91s: Clang :: Driver/clang_f_opts.c
26.85s: Clang :: Preprocessor/predefined-arch-macros.c
26.63s: LLVM :: CodeGen/RISCV/attributes.ll
26.14s: Clang :: Driver/linux-ld.c
23.97s: Clang :: Driver/cl-options.c
23.81s: LLVM :: tools/llvm-reduce/parallel-workitem-kill.ll
23.42s: LLVM :: CodeGen/ARM/build-attributes.ll
22.52s: Clang :: Driver/x86-target-features.c
20.14s: LLVM :: CodeGen/AMDGPU/memintrinsic-unroll.ll
19.86s: Clang :: Analysis/a_flaky_crash.cpp
19.61s: Clang :: CodeGen/AArch64/sve-intrinsics/acle_sve_reinterpret.c

Tests Times:
--------------------------------------------------------------------------
Step 11 (stage2/hwasan check) failure: stage2/hwasan check (failure)
...
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 86094 tests, 72 workers --
Testing:  0.. 10.. 20.. 30.. 40..
FAIL: LLVM :: CodeGen/SPIRV/opencl/reflect-error.ll (42879 of 86094)
******************** TEST 'LLVM :: CodeGen/SPIRV/opencl/reflect-error.ll' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 1: not /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/test/CodeGen/SPIRV/opencl/reflect-error.ll -o /dev/null 2>&1 | /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/test/CodeGen/SPIRV/opencl/reflect-error.ll
+ not /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/test/CodeGen/SPIRV/opencl/reflect-error.ll -o /dev/null
+ /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/test/CodeGen/SPIRV/opencl/reflect-error.ll

--

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.. 
Slowest Tests:
--------------------------------------------------------------------------
58.01s: Clang :: Driver/fsanitize.c
43.37s: Clang :: Preprocessor/riscv-target-features.c
39.83s: Clang :: Driver/arm-cortex-cpus-2.c
39.12s: Clang :: Driver/arm-cortex-cpus-1.c
36.02s: LLVM :: CodeGen/AMDGPU/sched-group-barrier-pipeline-solver.mir
35.27s: Clang :: OpenMP/target_defaultmap_codegen_01.cpp
34.50s: Clang :: OpenMP/target_update_codegen.cpp
31.41s: Clang :: Preprocessor/arm-target-features.c
30.84s: Clang :: Preprocessor/aarch64-target-features.c
27.91s: Clang :: Driver/clang_f_opts.c
26.85s: Clang :: Preprocessor/predefined-arch-macros.c
26.63s: LLVM :: CodeGen/RISCV/attributes.ll
26.14s: Clang :: Driver/linux-ld.c
23.97s: Clang :: Driver/cl-options.c
23.81s: LLVM :: tools/llvm-reduce/parallel-workitem-kill.ll
23.42s: LLVM :: CodeGen/ARM/build-attributes.ll
22.52s: Clang :: Driver/x86-target-features.c
20.14s: LLVM :: CodeGen/AMDGPU/memintrinsic-unroll.ll
19.86s: Clang :: Analysis/a_flaky_crash.cpp
19.61s: Clang :: CodeGen/AArch64/sve-intrinsics/acle_sve_reinterpret.c

Tests Times:
--------------------------------------------------------------------------

```

</details>

https://github.com/llvm/llvm-project/pull/123853