[llvm] [InstCombine][VectorCombine] Move bitcast vp.load fold into VectorCombine (PR #200321)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `profcheck` running on `profcheck-b1` while building `llvm` at step 5 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/223/builds/4186

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

```
Step 5 (annotate) failure: '../llvm-zorg/zorg/buildbot/builders/annotated/profcheck.sh --jobs=64' (failure)
...
    "/usr/bin/gcc"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /b/profcheck-build/build/CMakeFiles/CMakeScratch/TryCompile-TXNmMs
    
    Run Build Command(s):/usr/bin/ninja cmTC_5e428 && [1/2] Building C object CMakeFiles/cmTC_5e428.dir/testCCompiler.c.o
    [2/2] Linking C executable cmTC_5e428
    FAILED: cmTC_5e428 
    : && /usr/bin/gcc   CMakeFiles/cmTC_5e428.dir/testCCompiler.c.o -o cmTC_5e428   && :
    collect2: fatal error: cannot find ‘ld’
    compilation terminated.
    ninja: build stopped: subcommand failed.
    
    

  

  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:70 (project)


-- Configuring incomplete, errors occurred!
See also "/b/profcheck-build/build/CMakeFiles/CMakeOutput.log".
See also "/b/profcheck-build/build/CMakeFiles/CMakeError.log".

```

</details>

https://github.com/llvm/llvm-project/pull/200321