[llvm] [AMDGPU] Add wave reduce intrinsics for float types - 2 (PR #161815)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `ppc64le-flang-rhel-clang` running on `ppc64le-flang-rhel-test` while building `llvm` at step 6 "test-build-unified-tree-check-flang".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/157/builds/42376

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

```
Step 6 (test-build-unified-tree-check-flang) failure: 1200 seconds without output running [b'ninja', b'check-flang'], attempting to kill
...
PASS: Flang :: Transforms/dlti-dependency.fir (3997 of 4007)
PASS: Flang :: Driver/mrecip.f90 (3998 of 4007)
PASS: Flang :: Driver/target-cpu-features.f90 (3999 of 4007)
PASS: Flang :: Transforms/OpenACC/acc-implicit-data-fortran.F90 (4000 of 4007)
PASS: Flang :: Transforms/stack-arrays.f90 (4001 of 4007)
PASS: Flang :: Intrinsics/math-codegen.fir (4002 of 4007)
PASS: Flang :: Driver/use-module.f90 (4003 of 4007)
PASS: Flang :: Lower/OpenMP/rtl-flags.f90 (4004 of 4007)
PASS: Flang :: Driver/omp-driver-offload.f90 (4005 of 4007)
PASS: Flang :: Driver/linker-options.f90 (4006 of 4007)
command timed out: 1200 seconds without output running [b'ninja', b'check-flang'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=2962.167658
Step 7 (test-build-unified-tree-check-flang-rt) failure: 1200 seconds without output running [b'ninja', b'check-flang-rt'], attempting to kill
...
PASS: flang-rt-Unit :: Runtime/./RuntimeTests/210/248 (243 of 253)
PASS: flang-rt-Unit :: Runtime/./RuntimeTests/222/248 (244 of 253)
PASS: flang-rt-Unit :: Runtime/./RuntimeTests/223/248 (245 of 253)
PASS: flang-rt-Unit :: Runtime/./RuntimeTests/24/248 (246 of 253)
PASS: flang-rt-Unit :: Runtime/./RuntimeTests/71/248 (247 of 253)
PASS: flang-rt-Unit :: Runtime/./RuntimeTests/221/248 (248 of 253)
PASS: flang-rt-Unit :: Runtime/./RuntimeTests/212/248 (249 of 253)
PASS: flang-rt-Unit :: Runtime/./RuntimeTests/213/248 (250 of 253)
PASS: flang-rt-Unit :: Runtime/./RuntimeTests/219/248 (251 of 253)
PASS: flang-rt-Unit :: Runtime/./RuntimeTests/218/248 (252 of 253)
command timed out: 1200 seconds without output running [b'ninja', b'check-flang-rt'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=3918.547129

```

</details>

https://github.com/llvm/llvm-project/pull/161815