Changes

[lldb/Test] Add missing stdio.h includes

Fixes error: implicit declaration of function 'printf' is invalid in C99
[-Werror,-Wimplicit-function-declaration]

[OpenMP] support build on msys2/mingw with clang or gcc

RTM Adaptive Locks are supported on msys2/mingw for clang and gcc.

Differential Revision: https://reviews.llvm.org/D81776

[HotColdSplit] Add test case for unlikely attribute in outlined function

Differential Revision: https://reviews.llvm.org/D85232

[AArch64][SVE] Widen narrow sdiv/udiv operations.

The SVE instruction set only supports sdiv/udiv for 32-bit and 64-bit
integers.  If we see an 8-bit or 16-bit divide, widen the operands to 32
bits, and narrow the result.

Differential Revision: https://reviews.llvm.org/D85170

[lldb-vscode ]Add Syntax Highlighting to Disassembly View

When lldb cannot find source file thus IDE renders a disassembly view, add syntax highlighting for constants, registers and final line comments for better debugging experience.
The original plain disassembly view looks like:
{F12401687}
An ideal view is like the screenshot attached.
{F12401515}

In this diff, the mimeType is a kind of media type for formatting the content in the response to a source request. Elements in the disassembly view, like constants, registers and final line comments are colored for highlighting.
A built-in support in the VSCode IDE for syntax highlighting will identify the which mimeType to apply and render the disassembly view as expected.

Reviewed By: wallace, clayborg

Differential Revision: https://reviews.llvm.org/D84555

GlobalISel: Add utilty for getting function argument live ins

Get the argument register and ensure there's a copy to the virtual
register. AMDGPU and AArch64 have similarish code to get the livein
value, and I also want to use this in multiple places.

This is a bit more aggressive about setting the register class than
the original function, but that's probably OK.

I think we're missing a few verifier checks for function live ins. I
noticed AArch64's calling convention code is not actually adding
liveins to functions, only the entry block (which apparently might not
matter that much?). There should probably be a verifier check that
entry block live ins are also live into the function. We also might
need a verifier check that the copy to the livein virtual register is
in the entry block.

[lldb/Test] Skip tests that try to get the remote environment

We don't support getting the remote environment. The gdb remote protocol
has no packet for that.

AMDGPU/GlobalISel: Select llvm.returnaddress

[llvm][NFC] Moved implementation of TrainingLogger outside of its decl

Also renamed a method - printTensor - to print; and added comments.

AMDGPU/GlobalISel: Use live in helper function for returnaddress

[lldb/Test] Add @skipIfRemote decorator to TestProcessList.py

lldb-platform contains a very minimal support for the qfProcessInfo
packet, only allowing the simplest query to get most of the testsuite
running, and returning very little information about the matched
processes.

[RDF] Remove uses of RDFRegisters::normalize (deprecate)

This function has been reduced to an identity function for some time.

[SelectionDAG][SVE] Support scalable vectors in getConstantFP()

Differential Revision: https://reviews.llvm.org/D85249