[clang] [llvm] Fix Windows EH IP2State tables (remove +1 bias) (PR #144745)

[via llvm-commits]

dyung wrote:

@sivadeilra the tests are still failing at least on my MacOS bot after the fix in 9a7a6b24f8c88718ef1eea57bed07332e751c027. Can you take a look?

https://lab.llvm.org/buildbot/#/builders/190/builds/23988

```
******************** TEST 'Clang :: CodeGenCXX/microsoft-abi-eh-disabled.cpp' FAILED ********************
Exit Code: 1
Command Output (stderr):
--
/Users/buildbot/buildbot-root/aarch64-darwin/build/bin/clang --driver-mode=cl -c --target=x86_64-windows-msvc /EHs-c- -O2 /GS-    -Xclang=-import-call-optimization    /clang:-S /clang:-o- -- /Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/CodeGenCXX/microsoft-abi-eh-disabled.cpp 2>&1    | /Users/buildbot/buildbot-root/aarch64-darwin/build/bin/FileCheck /Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/CodeGenCXX/microsoft-abi-eh-disabled.cpp # RUN: at line 1
+ /Users/buildbot/buildbot-root/aarch64-darwin/build/bin/clang --driver-mode=cl -c --target=x86_64-windows-msvc /EHs-c- -O2 /GS- -Xclang=-import-call-optimization /clang:-S /clang:-o- -- /Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/CodeGenCXX/microsoft-abi-eh-disabled.cpp
+ /Users/buildbot/buildbot-root/aarch64-darwin/build/bin/FileCheck /Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/CodeGenCXX/microsoft-abi-eh-disabled.cpp
/Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/CodeGenCXX/microsoft-abi-eh-disabled.cpp:38:17: error: CHECK-LABEL: expected string not found in input
// CHECK-LABEL: .def "?normal_has_regions@@YAXXZ"
                ^
<stdin>:1:1: note: scanning from here
clang: warning: argument unused during compilation: '-c' [-Wunused-command-line-argument]
^
<stdin>:1:63: note: possible intended match here
clang: warning: argument unused during compilation: '-c' [-Wunused-command-line-argument]
                                                              ^
Input file: <stdin>
Check file: /Users/buildbot/buildbot-root/aarch64-darwin/llvm-project/clang/test/CodeGenCXX/microsoft-abi-eh-disabled.cpp
-dump-input=help explains the following input dump.
Input was:
<<<<<<
            1: clang: warning: argument unused during compilation: '-c' [-Wunused-command-line-argument] 
label:38'0     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
label:38'1                                                                   ?                            possible intended match
            2: clang (LLVM option parsing): Unknown command line argument '-x86-asm-syntax=intel'. Try: 'clang (LLVM option parsing) --help' 
label:38'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            3: clang (LLVM option parsing): Did you mean '--asan-stack=intel'? 
label:38'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>>>>>
```

https://github.com/llvm/llvm-project/pull/144745