[clang] [clang][bytecode] Fix shifting negative values (PR #104663)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-windows` running on `sanitizer-windows` while building `clang` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/107/builds/1989

Here is the relevant piece of the build log for the reference:
```
Step 4 (annotate) failure: 'python ../llvm-zorg/zorg/buildbot/builders/annotated/sanitizer-windows.py ...' (failure)
...
[8/20] Building CXX object tools\lld\Common\CMakeFiles\lldCommon.dir\Version.cpp.obj
[9/20] Linking CXX static library lib\lldCommon.lib
[10/20] Building CXX object tools\clang\lib\AST\CMakeFiles\obj.clangAST.dir\ByteCode\Context.cpp.obj
[11/20] Building CXX object tools\clang\lib\AST\CMakeFiles\obj.clangAST.dir\ByteCode\InterpBuiltin.cpp.obj
[12/20] Building CXX object lib\CodeGen\AsmPrinter\CMakeFiles\LLVMAsmPrinter.dir\AsmPrinter.cpp.obj
[13/20] Linking CXX static library lib\LLVMAsmPrinter.lib
[14/20] Building CXX object tools\clang\lib\AST\CMakeFiles\obj.clangAST.dir\ByteCode\EvalEmitter.cpp.obj
[15/20] Building CXX object lib\LTO\CMakeFiles\LLVMLTO.dir\LTO.cpp.obj
[16/20] Linking CXX static library lib\LLVMLTO.lib
[17/20] Linking CXX executable bin\lld.exe
command timed out: 1200 seconds without output running ['python', '../llvm-zorg/zorg/buildbot/builders/annotated/sanitizer-windows.py', '--jobs=16'], attempting to kill
program finished with exit code 1
elapsedTime=1258.436000
Step 7 (stage 1 build) failure: stage 1 build (failure)
@@@BUILD_STEP stage 1 build@@@
Running: ninja -j 16 compiler-rt
[1/2] Building CXX object projects\compiler-rt\lib\asan\CMakeFiles\RTAsan_dynamic_version_script_dummy.x86_64.dir\dummy.cpp.obj
[2/2] Linking CXX shared library lib\clang\20\lib\windows\clang_rt.asan_dynamic-x86_64.dll
Running: ninja -j 16 clang lld
[1/20] Generating VCSRevision.h
[2/20] Generating VCSVersion.inc
[3/20] Building CXX object tools\clang\lib\Basic\CMakeFiles\obj.clangBasic.dir\Version.cpp.obj
[4/20] Building CXX object lib\Object\CMakeFiles\LLVMObject.dir\IRSymtab.cpp.obj
[5/20] Linking CXX static library lib\LLVMObject.lib
[6/20] Generating VCSVersion.inc
[7/20] Linking CXX static library lib\clangBasic.lib
[8/20] Building CXX object tools\lld\Common\CMakeFiles\lldCommon.dir\Version.cpp.obj
[9/20] Linking CXX static library lib\lldCommon.lib
[10/20] Building CXX object tools\clang\lib\AST\CMakeFiles\obj.clangAST.dir\ByteCode\Context.cpp.obj
[11/20] Building CXX object tools\clang\lib\AST\CMakeFiles\obj.clangAST.dir\ByteCode\InterpBuiltin.cpp.obj
[12/20] Building CXX object lib\CodeGen\AsmPrinter\CMakeFiles\LLVMAsmPrinter.dir\AsmPrinter.cpp.obj
[13/20] Linking CXX static library lib\LLVMAsmPrinter.lib
[14/20] Building CXX object tools\clang\lib\AST\CMakeFiles\obj.clangAST.dir\ByteCode\EvalEmitter.cpp.obj
[15/20] Building CXX object lib\LTO\CMakeFiles\LLVMLTO.dir\LTO.cpp.obj
[16/20] Linking CXX static library lib\LLVMLTO.lib
[17/20] Linking CXX executable bin\lld.exe

command timed out: 1200 seconds without output running ['python', '../llvm-zorg/zorg/buildbot/builders/annotated/sanitizer-windows.py', '--jobs=16'], attempting to kill
program finished with exit code 1
elapsedTime=1258.436000

```

https://github.com/llvm/llvm-project/pull/104663