[ARM] Add writeback information to STC and LDC instructions.

[Rot127]

LDC and STC were missing the write-back register.

[XVilka]

Failure seems unrelated:

FAILED: unittests/tools/llvm-profgen/LLVMProfgenTests.exe
--
  | cmd.exe /C "cd . && C:\BuildTools\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe -E vs_link_exe --intdir=unittests\tools\llvm-profgen\CMakeFiles\LLVMProfgenTests.dir --rc="C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\rc.exe" --mt="C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\mt.exe" --manifests  -- C:\BuildTools\VC\Tools\MSVC\14.29.30133\bin\Hostx64\x64\link.exe /nologo unittests\tools\llvm-profgen\CMakeFiles\LLVMProfgenTests.dir\ContextCompressionTest.cpp.obj unittests\tools\llvm-profgen\CMakeFiles\LLVMProfgenTests.dir\__\__\__\resources\windows_version_resource.rc.res  /out:unittests\tools\llvm-profgen\LLVMProfgenTests.exe /implib:unittests\tools\llvm-profgen\LLVMProfgenTests.lib /pdb:unittests\tools\llvm-profgen\LLVMProfgenTests.pdb /version:0.0 /machine:x64 /STACK:10000000 /INCREMENTAL:NO /subsystem:console  lib\LLVMSupport.lib  lib\LLVMSupport.lib  lib\llvm_gtest_main.lib  lib\llvm_gtest.lib  lib\LLVMTestingSupport.lib  lib\llvm_gtest.lib  lib\LLVMSupport.lib  psapi.lib  shell32.lib  ole32.lib  uuid.lib  advapi32.lib  delayimp.lib  -delayload:shell32.dll  -delayload:ole32.dll  lib\LLVMDemangle.lib  kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib && cd ."
  | MT: command "C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\mt.exe /nologo /manifest unittests\tools\llvm-profgen\LLVMProfgenTests.exe.manifest /outputresource:unittests\tools\llvm-profgen\LLVMProfgenTests.exe;#1" failed (exit code 0x1f) with the following output:
  |  
  | mt.exe : general error c101008d: Failed to write the updated manifest to the resource of file "unittests\tools\llvm-profgen\LLVMProfgenTests.exe". Operation did not complete successfully because the file contains a virus or potentially unwanted software.
  | [9679/9687] Linking CXX executable unittests\tools\llvm-exegesis\LLVMExegesisTests.exe
  | [9681/9687] Linking CXX executable tools\clang\unittests\Tooling\ToolingTests.exe
  | ninja: build stopped: subcommand failed.

[SiliconA-Z]

Ping?

[Rot127]

It is still on the todo list. Sorry for letting it run stale. Will update it soon.

[Rot127]

I will eventually come back to this. But currently I won't find time to finish this. We accumulated a few other LLVM fixes in Capstone anyways.