[JITLink][COFF] Initial COFF support.

Adds initial COFF support in JITLink. This is able to run a hello world c program in x86 windows successfully.

Implemented
- COFF object loader
- Static local

[JITLink][COFF] Initial COFF support.

Adds initial COFF support in JITLink. This is able to run a hello world c program in x86 windows successfully.

Implemented
- COFF object loader
- Static local symbols
- Absolute symbols
- External symbols
- Weak external symbols
- Common symbols
- COFF jitlink-check support
- All COMDAT selection type execpt largest
- Implicit symobl size calculation
- Rel32 relocation with PLT stub.
- IMAGE_REL_AMD64_ADDR32NB relocation

Reviewed By: lhames

Differential Revision: https://reviews.llvm.org/D128968

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ManagedStatic: remove many straightforward uses in llvm

(Reapply after revert in e9ce1a588030d8d4004f5d7e443afe46245e9a92 due to
Fuchsia test failures. Removed changes in lib/ExecutionEngine/ other

ManagedStatic: remove many straightforward uses in llvm

(Reapply after revert in e9ce1a588030d8d4004f5d7e443afe46245e9a92 due to
Fuchsia test failures. Removed changes in lib/ExecutionEngine/ other
than error categories, to be checked in more detail and reapplied
separately.)

Bulk remove many of the more trivial uses of ManagedStatic in the llvm
directory, either by defining a new getter function or, in many cases,
moving the static variable directly into the only function that uses it.

Differential Revision: https://reviews.llvm.org/D129120

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Revert "ManagedStatic: remove many straightforward uses in llvm"

This reverts commit e6f1f062457c928c18a88c612f39d9e168f65a85.

Reverting due to a failure on the fuchsia-x86_64-linux buildbot.

ManagedStatic: remove many straightforward uses in llvm

Bulk remove many of the more trivial uses of ManagedStatic in the llvm
directory, either by defining a new getter function or, in many cases,

ManagedStatic: remove many straightforward uses in llvm

Bulk remove many of the more trivial uses of ManagedStatic in the llvm
directory, either by defining a new getter function or, in many cases,
moving the static variable directly into the only function that uses it.

Differential Revision: https://reviews.llvm.org/D129120

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[JITLink][RISCV] Refactor range checking and alignment checking

This patch refactors the range checking function to make it compatible with all relocation types and supports range checking for R_RIS

[JITLink][RISCV] Refactor range checking and alignment checking

This patch refactors the range checking function to make it compatible with all relocation types and supports range checking for R_RISCV_BRANCH. Moreover, it refactors the alignment check functions.

Reviewed By: StephenFan

Differential Revision: https://reviews.llvm.org/D117946

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[llvm] Use = default (NFC)

[JITLink] Use Section + Offset format for anon symbols in out-of-range errors.

The previous error message only provided the address of the anonymous symbol.
Knowing the containing section makes the

[JITLink] Use Section + Offset format for anon symbols in out-of-range errors.

The previous error message only provided the address of the anonymous symbol.
Knowing the containing section makes the error easier to diagnose at a glance.

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Re-apply "[JITLink] Update JITLink to use ExecutorAddr rather... " with fixes.

This re-applies 133f86e95492b2a00b944e070878424cfa73f87c, which was reverted in
c5965a411c635106a47738b8d2e24db822b7416

Re-apply "[JITLink] Update JITLink to use ExecutorAddr rather... " with fixes.

This re-applies 133f86e95492b2a00b944e070878424cfa73f87c, which was reverted in
c5965a411c635106a47738b8d2e24db822b7416f while I investigated bot failures.

The original failure contained an arithmetic conversion think-o (on line 419 of
EHFrameSupport.cpp) that could cause failures on 32-bit platforms. The issue
should be fixed in this patch.

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Revert "[JITLink] Update JITLink to use ExecutorAddr rather than..."

This reverts commit 133f86e95492b2a00b944e070878424cfa73f87c while I investigate
the bot failures at https://lab.llvm.org/buildbo

Revert "[JITLink] Update JITLink to use ExecutorAddr rather than..."

This reverts commit 133f86e95492b2a00b944e070878424cfa73f87c while I investigate
the bot failures at https://lab.llvm.org/buildbot#builders/186/builds/3370.

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[JITLink] Update JITLink to use ExecutorAddr rather than JITTargetAddress.

ExecutorAddr is the preferred representation for executor process addresses now.

[JITLink] Fix splitBlock if there are symbols span across the boundary

Fix `splitBlock` so that it can handle the case when the block being
split has symbols span across the split boundary. This is

[JITLink] Fix splitBlock if there are symbols span across the boundary

Fix `splitBlock` so that it can handle the case when the block being
split has symbols span across the split boundary. This is an error
case in general but for EHFrame splitting on macho platforms, there is an
anonymous symbol that marks the entire block. Current implementation
will leave a symbol that is out of bound of the underlying block. Fix
the problem by dropping such symbols when the block is split.

Reviewed By: lhames

Differential Revision: https://reviews.llvm.org/D113912

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[llvm][clang][NFC] updates inline licence info

Some files still contained the old University of Illinois Open Source
Licence header. This patch replaces that with the Apache 2 with LLVM
Exception li

[llvm][clang][NFC] updates inline licence info

Some files still contained the old University of Illinois Open Source
Licence header. This patch replaces that with the Apache 2 with LLVM
Exception licence.

Differential Revision: https://reviews.llvm.org/D107528

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[JITLink] Add support for moving blocks and symbols between sections.

LinkGraph::transferBlock can be used to move a block and all associated symbols
from one section to another.

LinkGraph::mergeSe

[JITLink] Add support for moving blocks and symbols between sections.

LinkGraph::transferBlock can be used to move a block and all associated symbols
from one section to another.

LinkGraph::mergeSections moves all blocks and sections from a source section to
a destination section.

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[JITLink] Fix symbol comparator in LinkGraph::dump.

The existing implementation did not provide a strict weak ordering.

[JITLink] Fix bogus format string.

[JITLink] Make LinkGraph debug dumps more readable.

This commit reorders some fields and fixes the width of others to try to
maintain more consistent columns. It also switches to long-hand scope
and

[JITLink] Make LinkGraph debug dumps more readable.

This commit reorders some fields and fixes the width of others to try to
maintain more consistent columns. It also switches to long-hand scope
and linkage names, since LinkGraph dumps aren't read often enough for
single-character codes to be memorable.

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[JITLink] Switch from StringRef to ArrayRef<char>, add some generic x86-64 utils

Adds utilities for creating anonymous pointers and jump stubs to x86_64.h. These
are used by the GOT and Stubs builde

[JITLink] Switch from StringRef to ArrayRef<char>, add some generic x86-64 utils

Adds utilities for creating anonymous pointers and jump stubs to x86_64.h. These
are used by the GOT and Stubs builder, but may also be used by pass writers who
want to create pointer stubs for indirection.

This patch also switches the underlying type for LinkGraph content from
StringRef to ArrayRef<char>. This avoids any confusion when working with buffers
that contain null bytes in the middle like, for example, a newly added null
pointer content array. ;)

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[JITLink] Improve out-of-range error messages.

Switches all backends to use the makeTargetOutOfRangeError function from
JITLink.h.

[JITLink][MachO][x86-64] Introduce generic x86-64 support.

This patch introduces generic x86-64 edge kinds, and refactors the MachO/x86-64
backend to use these edge kinds. This simplifies the implem

[JITLink][MachO][x86-64] Introduce generic x86-64 support.

This patch introduces generic x86-64 edge kinds, and refactors the MachO/x86-64
backend to use these edge kinds. This simplifies the implementation of the
MachO/x86-64 backend and makes it possible to write generic x86-64 passes and
utilities.

The new edge kinds are different from the original set used in the MachO/x86-64
backend. Several edge kinds that were not meaningfully distinguished in that
backend (e.g. the PCRelMinusN edges) have been merged into single edge kinds in
the new scheme (these edge kinds can be reintroduced later if we find a use for
them). At the same time, new edge kinds have been introduced to convey extra
information about the state of the graph. E.g. The Request*AndTransformTo**
edges represent GOT/TLVP relocations prior to synthesis of the GOT/TLVP
entries, and the 'Relaxable' suffix distinguishes edges that are candidates for
optimization from edges which should be left as-is (e.g. to enable runtime
redirection).

ELF/x86-64 will be refactored to use these generic edges at some point in the
future, and I anticipate a similar refactor to create a generic arm64 support
header too.

Differential Revision: https://reviews.llvm.org/D98305

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[JITLink][ORC] Make the LinkGraph available to modifyPassConfig.

This makes the target triple, graph name, and full graph content available
when making decisions about how to populate the linker pas

[JITLink][ORC] Make the LinkGraph available to modifyPassConfig.

This makes the target triple, graph name, and full graph content available
when making decisions about how to populate the linker pass pipeline.

Also updates the LLJITWithObjectLinkingLayerPlugin example to show more
API use, including use of the API changes in this patch.

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[JITLink] Remove some std::move(MemoryBufferRef) below createLinkGraphFromObject() (NFC)

[JITLink][ELF/x86-64] Add support for weak and hidden symbols.

[JITLink][ORC] Enable creation / linking of raw jitlink::LinkGraphs.

Separates link graph creation from linking. This allows raw LinkGraphs to be
created and passed to a link. ObjectLinkingLayer is

[JITLink][ORC] Enable creation / linking of raw jitlink::LinkGraphs.

Separates link graph creation from linking. This allows raw LinkGraphs to be
created and passed to a link. ObjectLinkingLayer is updated to support emission
of raw LinkGraphs in addition to object buffers.

Raw LinkGraphs can be created by in-memory compilers to bypass object encoding /
decoding (though this prevents caching, as LinkGraphs have do not have an
on-disk representation), and by utility code to add programatically generated
data structures to the JIT target process.

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[JITLink] Improve formatting for Edge, Block and Symbol debugging output.

[JITLink] Initial implementation of ELF / x86-64 support for JITLink.

This initial implementation supports section and symbol parsing, but no
relocation support. It enables JITLink to link and execu

[JITLink] Initial implementation of ELF / x86-64 support for JITLink.

This initial implementation supports section and symbol parsing, but no
relocation support. It enables JITLink to link and execute ELF relocatable
objects that do not require relocations.

Patch by Jared Wyles. Thanks Jared!

Differential Revision: https://reviews.llvm.org/D79832

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