Reapply "[NFC][DebugInfo][DWARF] Create new low-level dwarf library (#…
(#145959)
    
This reapplies cbf781f0bdf2f680abbe784faedeefd6f84c246e, with fixes for
the shared-library build and the unconventional sanitizer-runtime build.

Original Description:

This is the culmination of a series of changes described in [1].
    
Although somewhat large by line count, it is almost entirely mechanical,
creating a new library in DebugInfo/DWARF/LowLevel. This new library has
very minimal dependencies, allowing it to be used from more places than
the normal DebugInfo/DWARF library--in particular from MC.
    
1.
https://discourse.llvm.org/t/rfc-debuginfo-dwarf-refactor-into-to-lower-and-higher-level-libraries/86665/2

…145081)"

This reverts commit cbf781f0bdf2f680abbe784faedeefd6f84c246e.

Breaks a couple of buildbots.

This is the culmination of a series of changes described in [1].
    
Although somewhat large by line count, it is almost entirely mechanical,
creating a new library in DebugInfo/DWARF/LowLevel. This new library has
very minimal dependencies, allowing it to be used from more places than
the normal DebugInfo/DWARF library--in particular from MC.
    
I am happy to put it in another location, or to structure it differently
if that makes sense. Some have suggested in BinaryFormat, but it is not
a great fit there. But if that makes more sense to the reviewers, I can
do that.
 
Another possibility would be to use pass-through headers to allow
clients who don't care to depend only on DebugInfo/DWARF. This would be
a much less invasive change, and perhaps easier for clients. But also a
system that hides details.

Either way, I'm open.

1.
https://discourse.llvm.org/t/rfc-debuginfo-dwarf-refactor-into-to-lower-and-higher-level-libraries/86665/2

Similar to the existing implementations for X86 and PPC, support
symbolizing branch targets for AArch64. Do not omit the address for ADRP
as the target is typically not at an intended location.

Pull Request: https://github.com/llvm/llvm-project/pull/145009

(Revised version of a previous, unreviewed, PR.)

Move all expression verification into its only client: DWARFVerifier.
Move all printing code (which was a mix of static and member functions)
into a separate class.

This is one in a series of refactoring PRs to separate dwarf
functionality into lower-level pieces usable without object files and
sections at build time. The code is already written this way via various
"if (section == nullptr)" and similar conditionals. So the functionality
itself is needed and exists, but only as a runtime feature. The goal of
these refactors is to remove the build-time dependencies, which will
allow the existing functionality to be used from lower-level parts of
the compiler. Particularly from lib/MC/.... More information at:


https://discourse.llvm.org/t/rfc-debuginfo-dwarf-refactor-into-to-lower-and-higher-level-libraries/86665

Fixes #141740.

Co-authored-by: Alexey Karyakin <quic-akaryaki@quicinc.com>
Co-authored-by: Sudharsan Veeravalli <quic_svs@quicinc.com>

These are identified by misc-include-cleaner.  I've filtered out those
that break builds.  Also, I'm staying away from llvm-config.h,
config.h, and Compiler.h, which likely cause platform- or
compiler-specific build failures.

Utilize the new extensions to the LLVM Offloading API to extend to
llvm-objdump to handle dumping fatbin offload bundles generated by HIP.
This extension to llvm-objdump adds the option --offload-fatbin.
Specifying this option will take the input object/executable and extract
all offload fatbin bundle entries into distinct code object files with
names reflecting the source file name combined with the Bundle Entry ID.
Users can also use the --arch-name option to filter offload fatbin
bundle entries by their target triple.

---------

Co-authored-by: dsalinas <dsalinas@MKM-L1-DSALINAS.amd.com>

llvm-objdump currently calls MCDisassembler::getInstruction with
unadjusted address and MCInstPrinter::printInst with adjusted address.
The decoded branch targets will be adjusted as expected for most targets
(as the getInstruction address is insignificant) but not for SystemZ
(where the getInstruction address is displayed).

Specify an adjust address to fix SystemZInstPrinter output.

The added test utilizes llvm/utils/update_test_body.py to make updates
easier and additionally checks that we don't adjust SHN_ABS symbol
addresses.

Pull Request: https://github.com/llvm/llvm-project/pull/140471

This reverts commit 910220b84fa18ce2cbb2e21dd53b9f3d0ae582a7.

Multiple buildbot failures have been reported:
https://github.com/llvm/llvm-project/pull/140128