[Object,ELFType] Rename TargetEndianness to Endianness (#86604)

`TargetEndianness` is long and unwieldy. "Target" in the name is confusing. Rename it to "Endianness".

I cannot find noticeable out

[Object,ELFType] Rename TargetEndianness to Endianness (#86604)

`TargetEndianness` is long and unwieldy. "Target" in the name is confusing. Rename it to "Endianness".

I cannot find noticeable out-of-tree users of `TargetEndianness`, but
keep `TargetEndianness` to make this patch safer. `TargetEndianness`
will be removed by a subsequent change.

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Use llvm::endianness::{big,little,native} (NFC)

Note that llvm::support::endianness has been renamed to
llvm::endianness while becoming an enum class as opposed to an
enum. This patch replaces suppo

Use llvm::endianness::{big,little,native} (NFC)

Note that llvm::support::endianness has been renamed to
llvm::endianness while becoming an enum class as opposed to an
enum. This patch replaces support::{big,little,native} with
llvm::endianness::{big,little,native}.

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[InterfaceStub] Use std::optional in ELFObjHandler.cpp (NFC)

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasv

[InterfaceStub] Use std::optional in ELFObjHandler.cpp (NFC)

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716

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[llvm] Don't use Optional::getValue (NFC)

[llvm] Don't use Optional::hasValue (NFC)

[llvm] Use value_or instead of getValueOr (NFC)

Use getValueOr (NFC)

[ifs] Add --strip-size flag

st_size may not be of importance to the abi if you are not using
copy relocations. This is helpful when you want to check the abi
of a shared object both when instrumente

[ifs] Add --strip-size flag

st_size may not be of importance to the abi if you are not using
copy relocations. This is helpful when you want to check the abi
of a shared object both when instrumented and not because asan
will increase the size of objects to include the redzone.

Differential revision: https://reviews.llvm.org/D124792

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Revert "[ifs] Add --strip-size flag"

This reverts commit b6b0fd6a940b7006ced344736decccffaa583b8a.

[ifs] Add --strip-size flag

st_size may not be of importance to the abi if you are not using
copy relocations. This is helpful when you want to check the abi
of a shared object both when instrumente

[ifs] Add --strip-size flag

st_size may not be of importance to the abi if you are not using
copy relocations. This is helpful when you want to check the abi
of a shared object both when instrumented and not because asan
will increase the size of objects to include the redzone.

Differential revision: https://reviews.llvm.org/D124792

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Cleanup includes: DebugInfo & CodeGen

Discourse thread: https://discourse.llvm.org/t/include-what-you-use-include-cleanup
Differential Revision: https://reviews.llvm.org/D121332

[ifs] Allow llvm-ifs to generate text stub from elf stub

ELF stubs generated from llvm-ifs lacks program headers, which prevents
llvm-ifs from parsing them properly as program headers are required b

[ifs] Allow llvm-ifs to generate text stub from elf stub

ELF stubs generated from llvm-ifs lacks program headers, which prevents
llvm-ifs from parsing them properly as program headers are required by
llvm's own ELF libraries. This patch adds a few workaround bypass this
limitation.

Differential Revision: https://reviews.llvm.org/D116769

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[ifs] Added missing DT_STRSZ to the .dynamic section

This patch adds DT_STRSZ into the dynamic section, which was absent
previously. This was a bug and caused failures in other tools.

Differential

[ifs] Added missing DT_STRSZ to the .dynamic section

This patch adds DT_STRSZ into the dynamic section, which was absent
previously. This was a bug and caused failures in other tools.

Differential Revision: https://reviews.llvm.org/D117058

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Remove unused "using" (NFC)

Identified by misc-unused-using-decls.

[LLVM][NFC]Inclusive language: remove occurances of sanity check/test from llvm

Part of work to use more inclusive language in clang/llvm. Rewording
some comments and change function and variable na

[LLVM][NFC]Inclusive language: remove occurances of sanity check/test from llvm

Part of work to use more inclusive language in clang/llvm. Rewording
some comments and change function and variable names.

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[llvm] Remove redundant calls to str() and c_str() (NFC)

Identified with readability-redundant-string-cstr.

[ifs][elfabi] Merge llvm-ifs/elfabi tools

This change merges llvm-elfabi and llvm-ifs tools.

Differential Revision: https://reviews.llvm.org/D100139

[ifs] Prepare llvm-ifs for elfabi/ifs merging.

This diff changes llvm-ifs to use unified IFS file format
and perform other renaming changes in preparation for the
merging between elfabi/ifs.

Differ

[ifs] Prepare llvm-ifs for elfabi/ifs merging.

This diff changes llvm-ifs to use unified IFS file format
and perform other renaming changes in preparation for the
merging between elfabi/ifs.

Differential Revision: https://reviews.llvm.org/D99810

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[elfabi] Prepare elfabi/ifs merging.

This change implements unified text stub format and command line
interface proposed in the elfabi/ifs merge plan.

Differential Revision: https://reviews.llvm.or

[elfabi] Prepare elfabi/ifs merging.

This change implements unified text stub format and command line
interface proposed in the elfabi/ifs merge plan.

Differential Revision: https://reviews.llvm.org/D99399

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[elfabi] Fix a bug when .dynsym contains no non-local symbol

This patch fixed a bug when elbabi was supplied with a tbe file
contains no non-local symbol. Before this patch, it wrote 0 to
sh_info of

[elfabi] Fix a bug when .dynsym contains no non-local symbol

This patch fixed a bug when elbabi was supplied with a tbe file
contains no non-local symbol. Before this patch, it wrote 0 to
sh_info of the .dynsym section, making the ELF stub file invalid.
This patch fixed this issue.

Differential Revision: https://reviews.llvm.org/D96930

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[llvm-elfabi] Support ELF file that lacks .gnu.hash section

Before this change, when reading ELF file, elfabi determines number of
entries in .dynsym by reading the .gnu.hash section. This change ma

[llvm-elfabi] Support ELF file that lacks .gnu.hash section

Before this change, when reading ELF file, elfabi determines number of
entries in .dynsym by reading the .gnu.hash section. This change makes
elfabi read section headers directly first. This change allows elfabi
works on ELF files which do not have .gnu.hash sections.

Differential Revision: https://reviews.llvm.org/D93362

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[llvm-elfabi] Add flag to preserve timestamp when output is the same

This change adds '--write-if-changed' flag to llvm-elfabi tool. When
enabled, llvm-elfabi will not overwrite the existing file if

[llvm-elfabi] Add flag to preserve timestamp when output is the same

This change adds '--write-if-changed' flag to llvm-elfabi tool. When
enabled, llvm-elfabi will not overwrite the existing file if the
content of the file will not be changed, which preserves the
timestamp.

Differential Revision: https://reviews.llvm.org/D92902

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Revert "[llvm-elfabi] Add flag to preserve timestamp when output is the same"

This reverts commit fddb41744958d21635a60622cfb4067122810bcc. which
causes test failures on Mac builders.

[llvm-elfabi] Add flag to preserve timestamp when output is the same

This change adds '--write-if-changed' flag to llvm-elfabi tool. When
enabled, llvm-elfabi will not overwrite the existing file if

[llvm-elfabi] Add flag to preserve timestamp when output is the same

This change adds '--write-if-changed' flag to llvm-elfabi tool. When
enabled, llvm-elfabi will not overwrite the existing file if the
content of the file will not be changed, which preserves the
timestamp.

Differential Revision: https://reviews.llvm.org/D92902

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[lib/Object, tools] - Make ELFObjectFile::getELFFile return reference.

We always have an object, so we don't have to return a pointer.

Differential revision: https://reviews.llvm.org/D92560