[clang] [CIR] cir.call with scalar return type (PR #135552)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-gcc-ubuntu` running on `sie-linux-worker3` while building `clang` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/174/builds/16360

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

```
Step 6 (test-build-unified-tree-check-all) failure: 1200 seconds without output running [b'ninja', b'check-all'], attempting to kill
...
PASS: mlgo-utils :: corpus/combine_training_corpus_test.py (90238 of 90248)
PASS: mlgo-utils :: corpus/extract_ir_script.test (90239 of 90248)
PASS: lld :: wasm/unresolved-symbols.s (90240 of 90248)
PASS: mlgo-utils :: corpus/make_corpus_test.py (90241 of 90248)
PASS: lld :: wasm/why-extract.s (90242 of 90248)
PASS: lld :: MachO/loh-adrp-add.s (90243 of 90248)
PASS: mlgo-utils :: corpus/extract_ir_test.py (90244 of 90248)
PASS: lld :: MinGW/driver.test (90245 of 90248)
PASS: libFuzzer-x86_64-default-Linux :: fork.test (90246 of 90248)
PASS: libFuzzer-x86_64-default-Linux :: fork_corpus_groups.test (90247 of 90248)
command timed out: 1200 seconds without output running [b'ninja', b'check-all'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=1860.176174

```

</details>

https://github.com/llvm/llvm-project/pull/135552