[llvm] [Float2Int] Make sure the CFP can be represented in the integer type (PR #167699)

[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` at step 6 "test".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/141/builds/12965

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

```
Step 6 (test) failure: build (failure)
...
PASS: lldb-api :: functionalities/breakpoint/move_nearest/TestMoveNearest.py (345 of 2352)
PASS: lldb-api :: functionalities/breakpoint/nested_breakpoint_commands/TestNestedBreakpointCommands.py (346 of 2352)
UNSUPPORTED: lldb-api :: functionalities/breakpoint/objc/TestObjCBreakpoints.py (347 of 2352)
PASS: lldb-api :: functionalities/breakpoint/same_cu_name/TestFileBreakpointsSameCUName.py (348 of 2352)
XFAIL: lldb-api :: functionalities/breakpoint/scripted_bkpt/was_hit/TestWasHit.py (349 of 2352)
PASS: lldb-api :: functionalities/breakpoint/scripted_bkpt/TestScriptedResolver.py (350 of 2352)
PASS: lldb-api :: functionalities/breakpoint/source_regexp/TestSourceRegexBreakpoints.py (351 of 2352)
PASS: lldb-api :: functionalities/breakpoint/serialize/TestBreakpointSerialization.py (352 of 2352)
PASS: lldb-api :: functionalities/breakpoint/step_over_breakpoint/TestStepOverBreakpoint.py (353 of 2352)
PASS: lldb-api :: functionalities/breakpoint/two_hits_one_actual/TestTwoHitsOneActual.py (354 of 2352)
FAIL: lldb-api :: functionalities/bt-interrupt/TestInterruptBacktrace.py (355 of 2352)
******************** TEST 'lldb-api :: functionalities/bt-interrupt/TestInterruptBacktrace.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\bt-interrupt -p TestInterruptBacktrace.py
--
Exit Code: 1

Command Output (stdout):
--
lldb version 22.0.0git (https://github.com/llvm/llvm-project.git revision edd8b29667716101ed026baf3aa4befb37ac132a)
  clang revision edd8b29667716101ed026baf3aa4befb37ac132a
  llvm revision edd8b29667716101ed026baf3aa4befb37ac132a
Skipping the following test categories: ['watchpoint', 'libc++', 'libstdcxx', 'dwo', 'dsym', 'gmodules', 'debugserver', 'objc', 'fork', 'pexpect']

Number of frames: 1


--
Command Output (stderr):
--
FAIL: LLDB (C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\build\bin\clang.exe-aarch64) :: test_backtrace_interrupt (TestInterruptBacktrace.TestInterruptingBacktrace.test_backtrace_interrupt)

======================================================================

FAIL: test_backtrace_interrupt (TestInterruptBacktrace.TestInterruptingBacktrace.test_backtrace_interrupt)

   Use RequestInterrupt followed by stack operations

----------------------------------------------------------------------

Traceback (most recent call last):

  File "C:\Users\tcwg\llvm-worker\lldb-aarch64-windows\llvm-project\lldb\packages\Python\lldbsuite\test\decorators.py", line 156, in wrapper

    return func(*args, **kwargs)

           ^^^^^^^^^^^^^^^^^^^^^


```

</details>

https://github.com/llvm/llvm-project/pull/167699