[XCOFF] refactor the XCOFF BeginSymName handling

Fixes #96810

[MC] Make MCSection::isVirtualSection non-virtual (#96920)

This method is called once per encoded instruction, but never changes
throughout the lifetime of a section. Store this information as a bi

[MC] Make MCSection::isVirtualSection non-virtual (#96920)

This method is called once per encoded instruction, but never changes
throughout the lifetime of a section. Store this information as a bit
flag in the MCSection instead.

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[MC] Change Subsection parameters from const MCExpr * to uint32_t

Follow-up to 05ba5c0648ae5e80d5afce270495bf3b1eef9af4. uint32_t is
preferred over const MCExpr * in the section stack uses because i

[MC] Change Subsection parameters from const MCExpr * to uint32_t

Follow-up to 05ba5c0648ae5e80d5afce270495bf3b1eef9af4. uint32_t is
preferred over const MCExpr * in the section stack uses because it
should only be evaluated once. Change the paramter type to match.

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[AIX][TOC] Add -mtocdata/-mno-tocdata options on AIX (#67999)

This patch enables support that the XL compiler had for AIX under
-qdatalocal/-qdataimported.

[AIX] [XCOFF] Add support for common and local common symbols in the TOC (#79530)

This patch adds support for common and local symbols in the TOC for AIX.
Note that we need to update isVirtualSecti

[AIX] [XCOFF] Add support for common and local common symbols in the TOC (#79530)

This patch adds support for common and local symbols in the TOC for AIX.
Note that we need to update isVirtualSection so as a common symbol in
TOC will have the symbol type XTY_CM and will be initialized when placed
in the TOC so sections with this type are no longer virtual.

---------

Co-authored-by: Zaara Syeda <syzaara@ca.ibm.com>

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[AIX] Handle ReadOnlyWithRel kind on AIX.

Summary: This patch handles the SectionKind of ReadOnlyWithRel on AIX. The failure was discovered during sanitizer enablement and occured with `-fsanitize-c

[AIX] Handle ReadOnlyWithRel kind on AIX.

Summary: This patch handles the SectionKind of ReadOnlyWithRel on AIX. The failure was discovered during sanitizer enablement and occured with `-fsanitize-coverage` option.

Reviewed By: hubert.reinterpretcast

Differential Revision: https://reviews.llvm.org/D157483

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std::optional::value => operator*/operator->

value() has undesired exception checking semantics and calls
__throw_bad_optional_access in libc++. Moreover, the API is unavailable without
_LIBCPP_NO_E

std::optional::value => operator*/operator->

value() has undesired exception checking semantics and calls
__throw_bad_optional_access in libc++. Moreover, the API is unavailable without
_LIBCPP_NO_EXCEPTIONS on older Mach-O platforms (see
_LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS).

This commit fixes LLVMAnalysis and its dependencies.

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[reland][Alignment][NFC] Use the Align type in MCSection

Differential Revision: https://reviews.llvm.org/D138653

Revert D138653 [Alignment][NFC] Use the Align type in MCSection"

This breaks the bolt project.
This reverts commit 409f0dc4a420db1c6b259d5ae965a070c169d930.

[Alignment][NFC] Use the Align type in MCSection

Differential Revision: https://reviews.llvm.org/D138653

[llvm] Use value instead of getValue (NFC)

Revert "Don't use Optional::hasValue (NFC)"

This reverts commit aa8feeefd3ac6c78ee8f67bf033976fc7d68bc6d.

Don't use Optional::hasValue (NFC)

Cleanup includes: DebugInfo & CodeGen

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

[MC] Fix letter case of some MCSection member functions

Cleanup LLVMMC headers

There's a few relevant forward declarations in there that may require downstream
adding explicit includes:

llvm/MC/MCContext.h no longer includes llvm/BinaryFormat/ELF.h, llv

Cleanup LLVMMC headers

There's a few relevant forward declarations in there that may require downstream
adding explicit includes:

llvm/MC/MCContext.h no longer includes llvm/BinaryFormat/ELF.h, llvm/MC/MCSubtargetInfo.h, llvm/MC/MCTargetOptions.h
llvm/MC/MCObjectStreamer.h no longer include llvm/MC/MCAssembler.h
llvm/MC/MCAssembler.h no longer includes llvm/MC/MCFixup.h, llvm/MC/MCFragment.h

Counting preprocessed lines required to rebuild llvm-project on my setup:
before: 1052436830
after: 1049293745

Which is significant and backs up the change in addition to the usual benefits of
decreasing coupling between headers and compilation units.

Discourse thread: https://discourse.llvm.org/t/include-what-you-use-include-cleanup
Differential Revision: https://reviews.llvm.org/D119244

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[PowerPC][AIX] Support toc-data attribute for read-only globals.

The patch handles the addition of constant global variables to the table
of contents.

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

[PowerPC][AIX] Support toc-data attribute for read-only globals.

The patch handles the addition of constant global variables to the table
of contents.

Differential Revision: https://reviews.llvm.org/D116181

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[XCOFF] support DWARF for 32-bit XCOFF for object output

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D97184

[XCOFF][AIX] Add Global Variables Directly to TOC for 32 bit AIX

Summary:
This patch implements the backend implementation of adding global variables
directly to the table of contents (TOC), rather

[XCOFF][AIX] Add Global Variables Directly to TOC for 32 bit AIX

Summary:
This patch implements the backend implementation of adding global variables
directly to the table of contents (TOC), rather than adding the address of the
variable to the TOC.
Currently, this patch will look for the "toc-data" attribute on symbols in the
IR, and then add those symbols to the TOC.
ATM, this is implemented for 32 bit AIX.

Reviewers: sfertile
Differential Revision: https://reviews.llvm.org/D101178

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[XCOFF][DebugInfo] support DWARF for XCOFF for assembly output.

Reviewed By: jasonliu

Differential Revision: https://reviews.llvm.org/D95518

[AIX][TLS] Generate TLS variables in assembly files

This patch allows generating TLS variables in assembly files on AIX.
Initialized and external uninitialized variables are generated with the
.csec

[AIX][TLS] Generate TLS variables in assembly files

This patch allows generating TLS variables in assembly files on AIX.
Initialized and external uninitialized variables are generated with the
.csect pseudo-op and local uninitialized variables are generated with
the .comm/.lcomm pseudo-ops. The patch also adds a check to
explicitly say that TLS is not yet supported on AIX.

Reviewed by: daltenty, jasonliu, lei, nemanjai, sfertile
Originally patched by: bsaleil
Commandeered by: NeHuang

Differential Revision: https://reviews.llvm.org/D96184

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[XCOFF][NFC] make StorageMappingClass/SymbolType member optional

This patch makes StorageMappingClass/SymbolType member optional in
class MCSectionXCOFF.

Non-csect sections like debug sections have

[XCOFF][NFC] make StorageMappingClass/SymbolType member optional

This patch makes StorageMappingClass/SymbolType member optional in
class MCSectionXCOFF.

Non-csect sections like debug sections have no such properties.

Reviewed By: hubert.reinterpretcast

Differential Revision: https://reviews.llvm.org/D96641

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[XCOFF][AIX] Use TE storage mapping class when large code model is enabled

Summary:
Use TE SMC instead of TC SMC in large code model mode,
so that large code model TOC entries could get placed after

[XCOFF][AIX] Use TE storage mapping class when large code model is enabled

Summary:
Use TE SMC instead of TC SMC in large code model mode,
so that large code model TOC entries could get placed after all
the small code model TOC entries, which reduces the chance of TOC overflow.

Reviewed By: Xiangling_L

Differential Revision: https://reviews.llvm.org/D85455

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[NFC][AIX] Remove spaces after the comma for '.csect' directive

To be consistent with other directives like '.comm', '.lcomm', we remove
the spaces after the comma for '.csect' on AIX.

Differential

[NFC][AIX] Remove spaces after the comma for '.csect' directive

To be consistent with other directives like '.comm', '.lcomm', we remove
the spaces after the comma for '.csect' on AIX.

Differential Revision: https://reviews.llvm.org/D80247

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[XCOFF][AIX] Emit correct alignment for csect

Summary:
This patch tries to emit the correct alignment result for both
object file generation path and assembly path.

Reviewed by: hubert.reinterpretc

[XCOFF][AIX] Emit correct alignment for csect

Summary:
This patch tries to emit the correct alignment result for both
object file generation path and assembly path.

Reviewed by: hubert.reinterpretcast, DiggerLin, daltenty

Differential Revision: https://reviews.llvm.org/D79127

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