[llvm] Add support for fixed-point types (PR #129596)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-x86_64-debian-fast` running on `gribozavr4` while building `llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/56/builds/22282

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

```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'LLVM :: Bindings/OCaml/debuginfo.ml' FAILED ********************
Exit Code: 10

Command Output (stderr):
--
rm -rf /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp && mkdir -p /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp && cp /b/1/clang-x86_64-debian-fast/llvm.src/llvm/test/Bindings/OCaml/debuginfo.ml /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp/debuginfo.ml && cp /b/1/clang-x86_64-debian-fast/llvm.src/llvm/test/Bindings/OCaml/Utils/Testsuite.ml /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp/Testsuite.ml # RUN: at line 1
+ rm -rf /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp
+ mkdir -p /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp
+ cp /b/1/clang-x86_64-debian-fast/llvm.src/llvm/test/Bindings/OCaml/debuginfo.ml /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp/debuginfo.ml
+ cp /b/1/clang-x86_64-debian-fast/llvm.src/llvm/test/Bindings/OCaml/Utils/Testsuite.ml /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp/Testsuite.ml
/usr/bin/ocamlfind ocamlc -cclib -L/b/1/clang-x86_64-debian-fast/llvm.obj/lib  -g -w +A -package llvm.all_backends -package llvm.target -package llvm.analysis -package llvm.debuginfo -I /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp/ -linkpkg /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp/Testsuite.ml /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp/debuginfo.ml -o /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp/executable # RUN: at line 2
+ /usr/bin/ocamlfind ocamlc -cclib -L/b/1/clang-x86_64-debian-fast/llvm.obj/lib -g -w +A -package llvm.all_backends -package llvm.target -package llvm.analysis -package llvm.debuginfo -I /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp/ -linkpkg /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp/Testsuite.ml /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp/debuginfo.ml -o /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp/executable
/b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp/executable | /b/1/clang-x86_64-debian-fast/llvm.obj/bin/FileCheck /b/1/clang-x86_64-debian-fast/llvm.src/llvm/test/Bindings/OCaml/debuginfo.ml # RUN: at line 3
+ /b/1/clang-x86_64-debian-fast/llvm.obj/test/Bindings/OCaml/Output/debuginfo.ml.tmp/executable
+ /b/1/clang-x86_64-debian-fast/llvm.obj/bin/FileCheck /b/1/clang-x86_64-debian-fast/llvm.src/llvm/test/Bindings/OCaml/debuginfo.ml
FAILED: //module_level_tests #5
FAILED: //module_level_tests #6
FAILED: //module_level_tests #7
FAILED: //function_level_tests #1
FAILED: //function_level_tests #3
FAILED: //basic_block and instructions tests #4
FAILED: //global variable expression tests #3
FAILED: //type tests #1
FAILED: //type tests #2
FAILED: //type tests #4
FAILED: //type tests #10
FAILED: //type tests #11

--

********************


```

</details>

https://github.com/llvm/llvm-project/pull/129596