[llvm] [mlir] [OMPIRBuilder] Hoist alloca's to entry blocks of compiler-emitted GPU reduction functions (PR #181359)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `lldb-aarch64-windows` running on `linaro-armv8-windows-msvc-05` while building `llvm,mlir` at step 6 "test".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/141/builds/15506

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

```
Step 6 (test) failure: build (failure)
...
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_args.py (1270 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_basic.py (1271 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_commands.py (1272 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_cwd.py (1273 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_debuggerRoot.py (1274 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_disableSTDIO.py (1275 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_environment_with_array.py (1276 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_environment_with_object.py (1277 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_extra_launch_commands.py (1278 of 2449)
TIMEOUT: lldb-api :: functionalities/thread/break_after_join/TestBreakAfterJoin.py (1279 of 2449)
******************** TEST 'lldb-api :: functionalities/thread/break_after_join/TestBreakAfterJoin.py' FAILED ********************
Script:
--
C:/Users/tcwg/scoop/apps/python/current/python.exe C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/llvm-project/lldb\test\API\dotest.py -u CXXFLAGS -u CFLAGS --env LLVM_LIBS_DIR=C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./lib --env LLVM_INCLUDE_DIR=C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/include --env LLVM_TOOLS_DIR=C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin --arch aarch64 --build-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/lldb-test-build.noindex --lldb-module-cache-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/lldb-test-build.noindex/module-cache-lldb\lldb-api --clang-module-cache-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/lldb-test-build.noindex/module-cache-clang\lldb-api --executable C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin/lldb.exe --compiler C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin/clang.exe --dsymutil C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin/dsymutil.exe --make C:/Users/tcwg/scoop/shims/make.exe --llvm-tools-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./bin --lldb-obj-root C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/tools/lldb --lldb-libs-dir C:/Users/tcwg/llvm-worker/lldb-aarch64-windows/build/./lib --cmake-build-type Release --skip-category=watchpoint C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\llvm-project\lldb\test\API\functionalities\thread\break_after_join -p TestBreakAfterJoin.py
--
Exit Code: 15
Timeout: Reached timeout of 600 seconds

Command Output (stdout):
--
lldb version 23.0.0git (https://github.com/llvm/llvm-project.git revision c985f285e4911affa46ea79e21263cbaf4c8322f)
  clang revision c985f285e4911affa46ea79e21263cbaf4c8322f
  llvm revision c985f285e4911affa46ea79e21263cbaf4c8322f

--
Command Output (stderr):
--
UNSUPPORTED: LLDB (C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\build\bin\clang.exe-aarch64) :: test_dsym (TestBreakAfterJoin.BreakpointAfterJoinTestCase.test_dsym) (test case does not fall in any category of interest for this run) 


--

********************
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_failing_console.py (1280 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_failing_launch_commands.py (1281 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_invalid_launch_commands_and_console.py (1282 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_invalid_program.py (1283 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_no_lldbinit_flag.py (1284 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_shellExpandArguments_disabled.py (1285 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_shellExpandArguments_enabled.py (1286 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_stdio_redirection.py (1287 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_sourcePath.py (1288 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_stdio_redirection_and_console.py (1289 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_stopOnEntry.py (1290 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_termination.py (1291 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_terminate_commands.py (1292 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/TestDAP_launch_version.py (1293 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/launch/io/TestDAP_launch_io_integratedTerminal.py (1294 of 2449)
UNSUPPORTED: lldb-api :: tools/lldb-dap/locations/TestDAP_locations.py (1295 of 2449)

```

</details>

https://github.com/llvm/llvm-project/pull/181359