[llvm] [TLI] Add basic support for fdim libcall (PR #108702)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ve-ninja` running on `hpce-ve-main` while building `llvm` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/12/builds/6211

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

```
Step 4 (annotate) failure: 'python ../llvm-zorg/zorg/buildbot/builders/annotated/ve-linux.py ...' (failure)
...
[656/657] Running the LLVM regression tests
Unknown option: -C
usage: git [--version] [--help] [-c name=value]
           [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
           [-p|--paginate|--no-pager] [--no-replace-objects] [--bare]
           [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]
           <command> [<args>]
An error occurred retrieving the git revision: Command '['git', '-C', '/scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm', 'rev-parse', 'HEAD']' returned non-zero exit status 129.
-- Testing: 55362 tests, 48 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90
FAIL: LLVM :: tools/llvm-tli-checker/ps4-tli-check.yaml (52929 of 55362)
******************** TEST 'LLVM :: tools/llvm-tli-checker/ps4-tli-check.yaml' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 4: /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/yaml2obj /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml -DTYPE=ET_REL -DLABEL=Symbols -DZDAPV=_ZdaPv -o=/scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/test/tools/llvm-tli-checker/Output/ps4-tli-check.yaml.tmp1
+ /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/yaml2obj /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml -DTYPE=ET_REL -DLABEL=Symbols -DZDAPV=_ZdaPv -o=/scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/test/tools/llvm-tli-checker/Output/ps4-tli-check.yaml.tmp1
RUN: at line 5: llvm-tli-checker --triple=x86_64-scei-ps4 /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/test/tools/llvm-tli-checker/Output/ps4-tli-check.yaml.tmp1 | /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/FileCheck /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml
+ llvm-tli-checker --triple=x86_64-scei-ps4 /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/test/tools/llvm-tli-checker/Output/ps4-tli-check.yaml.tmp1
+ /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/FileCheck /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml
/scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml:37:10: error: CHECK: expected string not found in input
# CHECK: == Total TLI yes SDK yes: 253
         ^
<stdin>:25:27: note: scanning from here
>> Total TLI no SDK yes: 0
                          ^
<stdin>:26:1: note: possible intended match here
== Total TLI yes SDK yes: 256
^

Input file: <stdin>
Check file: /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml

-dump-input=help explains the following input dump.

Input was:
<<<<<<
            .
            .
            .
           20: << TLI yes SDK no : 'fmaximum_numl' 
           21: << TLI yes SDK no : 'fminimum_num' 
           22: << TLI yes SDK no : 'fminimum_numf' 
           23: << TLI yes SDK no : 'fminimum_numl' 
           24: << Total TLI yes SDK no: 18 
           25: >> Total TLI no SDK yes: 0 
check:37'0                               X error: no match found
           26: == Total TLI yes SDK yes: 256 
Step 8 (check-llvm) failure: check-llvm (failure)
...
[656/657] Running the LLVM regression tests
Unknown option: -C
usage: git [--version] [--help] [-c name=value]
           [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
           [-p|--paginate|--no-pager] [--no-replace-objects] [--bare]
           [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]
           <command> [<args>]
An error occurred retrieving the git revision: Command '['git', '-C', '/scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm', 'rev-parse', 'HEAD']' returned non-zero exit status 129.
-- Testing: 55362 tests, 48 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90
FAIL: LLVM :: tools/llvm-tli-checker/ps4-tli-check.yaml (52929 of 55362)
******************** TEST 'LLVM :: tools/llvm-tli-checker/ps4-tli-check.yaml' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 4: /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/yaml2obj /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml -DTYPE=ET_REL -DLABEL=Symbols -DZDAPV=_ZdaPv -o=/scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/test/tools/llvm-tli-checker/Output/ps4-tli-check.yaml.tmp1
+ /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/yaml2obj /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml -DTYPE=ET_REL -DLABEL=Symbols -DZDAPV=_ZdaPv -o=/scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/test/tools/llvm-tli-checker/Output/ps4-tli-check.yaml.tmp1
RUN: at line 5: llvm-tli-checker --triple=x86_64-scei-ps4 /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/test/tools/llvm-tli-checker/Output/ps4-tli-check.yaml.tmp1 | /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/FileCheck /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml
+ llvm-tli-checker --triple=x86_64-scei-ps4 /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/test/tools/llvm-tli-checker/Output/ps4-tli-check.yaml.tmp1
+ /scratch/buildbot/bothome/clang-ve-ninja/build/build_llvm/bin/FileCheck /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml
/scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml:37:10: error: CHECK: expected string not found in input
# CHECK: == Total TLI yes SDK yes: 253
         ^
<stdin>:25:27: note: scanning from here
>> Total TLI no SDK yes: 0
                          ^
<stdin>:26:1: note: possible intended match here
== Total TLI yes SDK yes: 256
^

Input file: <stdin>
Check file: /scratch/buildbot/bothome/clang-ve-ninja/llvm-project/llvm/test/tools/llvm-tli-checker/ps4-tli-check.yaml

-dump-input=help explains the following input dump.

Input was:
<<<<<<
            .
            .
            .
           20: << TLI yes SDK no : 'fmaximum_numl' 
           21: << TLI yes SDK no : 'fminimum_num' 
           22: << TLI yes SDK no : 'fminimum_numf' 
           23: << TLI yes SDK no : 'fminimum_numl' 
           24: << Total TLI yes SDK no: 18 
           25: >> Total TLI no SDK yes: 0 
check:37'0                               X error: no match found
           26: == Total TLI yes SDK yes: 256 

```

</details>

https://github.com/llvm/llvm-project/pull/108702