[clang] [CIR] Upstream ThreeWayCmpOp (PR #169963)

[via cfe-commits]

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Linux-->
# :penguin: Linux x64 Test Results

* 85544 tests passed
* 743 tests skipped
* 1 test failed

## Failed Tests
(click on a test name to see its output)

### Clang
<details>
<summary>Clang.CIR/CodeGen/three-way-cmp.cpp</summary>

```
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 1
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/clang -cc1 -internal-isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/clang/22/include -nostdsysteminc -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -emit-cir -mmlir --mlir-print-ir-before=cir-lowering-prepare /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CIR/CodeGen/three-way-cmp.cpp -o /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/test/CIR/CodeGen/Output/three-way-cmp.cpp.tmp.cir 2>&1 | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CIR/CodeGen/three-way-cmp.cpp -check-prefix=BEFORE
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/clang -cc1 -internal-isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/clang/22/include -nostdsysteminc -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -emit-cir -mmlir --mlir-print-ir-before=cir-lowering-prepare /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CIR/CodeGen/three-way-cmp.cpp -o /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/test/CIR/CodeGen/Output/three-way-cmp.cpp.tmp.cir
# note: command had no output on stdout or stderr
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CIR/CodeGen/three-way-cmp.cpp -check-prefix=BEFORE
# note: command had no output on stdout or stderr
# RUN: at line 2
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/clang -cc1 -internal-isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/clang/22/include -nostdsysteminc -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -emit-cir -mmlir --mlir-print-ir-after=cir-lowering-prepare /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CIR/CodeGen/three-way-cmp.cpp -o /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/test/CIR/CodeGen/Output/three-way-cmp.cpp.tmp.cir 2>&1 | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CIR/CodeGen/three-way-cmp.cpp -check-prefix=AFTER
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/clang -cc1 -internal-isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/clang/22/include -nostdsysteminc -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -emit-cir -mmlir --mlir-print-ir-after=cir-lowering-prepare /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CIR/CodeGen/three-way-cmp.cpp -o /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/test/CIR/CodeGen/Output/three-way-cmp.cpp.tmp.cir
# note: command had no output on stdout or stderr
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CIR/CodeGen/three-way-cmp.cpp -check-prefix=AFTER
# note: command had no output on stdout or stderr
# RUN: at line 4
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/clang -cc1 -internal-isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/clang/22/include -nostdsysteminc -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -emit-llvm /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CIR/CodeGen/three-way-cmp.cpp -o /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/test/CIR/CodeGen/Output/three-way-cmp.cpp.tmp.ll 2>&1 | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck --input-file=/home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/test/CIR/CodeGen/Output/three-way-cmp.cpp.tmp.ll /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CIR/CodeGen/three-way-cmp.cpp -check-prefix=LLVM
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/clang -cc1 -internal-isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lib/clang/22/include -nostdsysteminc -triple x86_64-unknown-linux-gnu -std=c++20 -fclangir -emit-llvm /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CIR/CodeGen/three-way-cmp.cpp -o /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/test/CIR/CodeGen/Output/three-way-cmp.cpp.tmp.ll
# note: command had no output on stdout or stderr
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck --input-file=/home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/test/CIR/CodeGen/Output/three-way-cmp.cpp.tmp.ll /home/gha/actions-runner/_work/llvm-project/llvm-project/clang/test/CIR/CodeGen/three-way-cmp.cpp -check-prefix=LLVM
# .---command stderr------------
# | Could not open input file '/home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/test/CIR/CodeGen/Output/three-way-cmp.cpp.tmp.ll': No such file or directory
# `-----------------------------
# error: command failed with exit status: 2

--

```
</details>

If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.

https://github.com/llvm/llvm-project/pull/169963