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

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-armv8-quick` running on `linaro-clang-armv8-quick` while building `clang,llvm` at step 5 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/154/builds/19094

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

```
Step 5 (ninja check 1) failure: stage 1 checked (failure)
******************** TEST 'Clang :: CodeGenCXX/microsoft-abi-eh-disabled.cpp' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
/home/tcwg-buildbot/worker/clang-armv8-quick/stage1/bin/clang --driver-mode=cl -c --target=x86_64-windows-msvc /EHs-c- -O2 /GS-    -Xclang=-import-call-optimization    /clang:-S /clang:-o- /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGenCXX/microsoft-abi-eh-disabled.cpp 2>&1    | /home/tcwg-buildbot/worker/clang-armv8-quick/stage1/bin/FileCheck /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGenCXX/microsoft-abi-eh-disabled.cpp # RUN: at line 1
+ /home/tcwg-buildbot/worker/clang-armv8-quick/stage1/bin/clang --driver-mode=cl -c --target=x86_64-windows-msvc /EHs-c- -O2 /GS- -Xclang=-import-call-optimization /clang:-S /clang:-o- /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGenCXX/microsoft-abi-eh-disabled.cpp
+ /home/tcwg-buildbot/worker/clang-armv8-quick/stage1/bin/FileCheck /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/clang/test/CodeGenCXX/microsoft-abi-eh-disabled.cpp
/home/tcwg-buildbot/worker/clang-armv8-quick/llvm/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: /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/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     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>>>>>

--

********************


```

</details>

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