[Sema] Remove unused includes (NFC) (#116461)

Identified with misc-include-cleaner.

[clang] Use {} instead of std::nullopt to initialize empty ArrayRef (#109399)

Follow up to #109133.

[NFC][Sema] Move `Sema::AssignmentAction` into its own scoped enum (#106453)

The primary motivation behind this is to allow the enum type to be
referred to earlier in the Sema.h file which is neede

[NFC][Sema] Move `Sema::AssignmentAction` into its own scoped enum (#106453)

The primary motivation behind this is to allow the enum type to be
referred to earlier in the Sema.h file which is needed for #106321.

It was requested in #106321 that a scoped enum be used (rather than
moving the enum declaration earlier in the Sema class declaration).
Unfortunately doing this creates a lot of churn as all use sites of the
enum constants had to be changed. Appologies to all downstream forks in
advanced.

Note the AA_ prefix has been dropped from the enum value names as they
are now redundant.

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[clang] Introduce `SemaPseudoObject` (#92646)

This patch moves `Sema` functions that handle pseudo-objects into the
new `SemaPseudoObject` class. This continues previous efforts to split
`Sema` up

[clang] Introduce `SemaPseudoObject` (#92646)

This patch moves `Sema` functions that handle pseudo-objects into the
new `SemaPseudoObject` class. This continues previous efforts to split
`Sema` up. Additional context can be found in #84184.
As usual, in order to help reviewing this, formatting changes are split
into a separate commit.

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[clang] Introduce `SemaObjC` (#89086)

This is continuation of efforts to split `Sema` up, following the
example of OpenMP, OpenACC, etc. Context can be found in
https://github.com/llvm/llvm-projec

[clang] Introduce `SemaObjC` (#89086)

This is continuation of efforts to split `Sema` up, following the
example of OpenMP, OpenACC, etc. Context can be found in
https://github.com/llvm/llvm-project/pull/82217 and
https://github.com/llvm/llvm-project/pull/84184.

I split formatting changes into a separate commit to help reviewing the
actual changes.

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[clang][NFC] Refactor `Sema::CheckedConversionKind`

Convert it to scoped enum, and move it to namespace scope to enable forward declarations.

[NFC][Clang] Improve const correctness for IdentifierInfo (#79365)

The IdentifierInfo isn't typically modified. Use 'const' wherever
possible.

[clang][NFC] Refactor `ObjCMethodDecl::ImplementationControl`

This patch moves `ObjCMethodDecl::ImplementationControl` to a DeclBase.h so that it's complete at the point where corresponsing bit-fiel

[clang][NFC] Refactor `ObjCMethodDecl::ImplementationControl`

This patch moves `ObjCMethodDecl::ImplementationControl` to a DeclBase.h so that it's complete at the point where corresponsing bit-field is declared. This patch also converts it to a scoped enum `clang::ObjCImplementationControl`.

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[clang] Use range-based for loops (NFC)

[C] Support _Generic expressions with a type operand

_Generic accepts an expression operand whose type is matched against a
list of associations. The expression operand is unevaluated, but the
type

[C] Support _Generic expressions with a type operand

_Generic accepts an expression operand whose type is matched against a
list of associations. The expression operand is unevaluated, but the
type matched is the type after lvalue conversion. This conversion loses
type information, which makes it more difficult to match against
qualified or incomplete types.

This extension allows _Generic to accept a type operand instead of an
expression operand. The type operand form does not undergo any
conversions and is matched directly against the association list.

This extension is also supported in C++ as we already supported
_Generic selection expressions there.

The RFC for this extension can be found at:
https://discourse.llvm.org/t/rfc-generic-selection-expression-with-a-type-operand/70388

Differential Revision: https://reviews.llvm.org/D149904

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[Sema] Use std::nullopt instead of None (NFC)

This patch mechanically replaces None with std::nullopt where the
compiler would warn if None were deprecated. The intent is to reduce
the amount of ma

[Sema] Use std::nullopt instead of None (NFC)

This patch mechanically replaces None with std::nullopt where the
compiler would warn if None were deprecated. The intent is to reduce
the amount of manual work required in migrating from Optional to
std::optional.

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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[clang] NFC: Rename rvalue to prvalue

This renames the expression value categories from rvalue to prvalue,
keeping nomenclature consistent with C++11 onwards.

C++ has the most complicated taxonomy

[clang] NFC: Rename rvalue to prvalue

This renames the expression value categories from rvalue to prvalue,
keeping nomenclature consistent with C++11 onwards.

C++ has the most complicated taxonomy here, and every other language
only uses a subset of it, so it's less confusing to use the C++ names
consistently, and mentally remap to the C names when working on that
context (prvalue -> rvalue, no xvalues, etc).

Renames:
* VK_RValue -> VK_PRValue
* Expr::isRValue -> Expr::isPRValue
* SK_QualificationConversionRValue -> SK_QualificationConversionPRValue
* JSON AST Dumper Expression nodes value category: "rvalue" -> "prvalue"

Signed-off-by: Matheus Izvekov <mizvekov@gmail.com>

Reviewed By: rsmith

Differential Revision: https://reviews.llvm.org/D103720

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Revert "[NFC, Refactor] Modernize StorageClass from Specifiers.h to a scoped enum (II)"

This reverts commit efc82c4ad2bcb256a4f4c20238d08cd3afba4d2d.

[NFC, Refactor] Modernize StorageClass from Specifiers.h to a scoped enum (II)

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D93765

Reland D81869 "Modify FPFeatures to use delta not absolute settings"
This reverts commit defd43a5b393bb63a902042adf578081b03b171d.
with correction to solve msan report

To solve https://bugs.llvm.org

Reland D81869 "Modify FPFeatures to use delta not absolute settings"
This reverts commit defd43a5b393bb63a902042adf578081b03b171d.
with correction to solve msan report

To solve https://bugs.llvm.org/show_bug.cgi?id=46166 where the
floating point settings in PCH files aren't compatible, rewrite
FPFeatures to use a delta in the settings rather than absolute settings.
With this patch, these floating point options can be benign.

Reviewers: rjmccall

Differential Revision: https://reviews.llvm.org/D81869

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Revert "Revert "Revert "Modify FPFeatures to use delta not absolute settings"""

This reverts commit 9518763d710bfbbf9315fa88972c55898be44a0e.
Memory sanitizer fails in CGFPOptionsRAII::CGFPOptionsRA

Revert "Revert "Revert "Modify FPFeatures to use delta not absolute settings"""

This reverts commit 9518763d710bfbbf9315fa88972c55898be44a0e.
Memory sanitizer fails in CGFPOptionsRAII::CGFPOptionsRAII dtor

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Revert "Revert "Modify FPFeatures to use delta not absolute settings""

This reverts commit b55d723ed61052b77e720dcffecac43abe873186.
Reapply Modify FPFeatures to use delta not absolute settings

To

Revert "Revert "Modify FPFeatures to use delta not absolute settings""

This reverts commit b55d723ed61052b77e720dcffecac43abe873186.
Reapply Modify FPFeatures to use delta not absolute settings

To solve https://bugs.llvm.org/show_bug.cgi?id=46166 where the
floating point settings in PCH files aren't compatible, rewrite
FPFeatures to use a delta in the settings rather than absolute settings.
With this patch, these floating point options can be benign.

Reviewers: rjmccall

Differential Revision: https://reviews.llvm.org/D81869

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Revert "Modify FPFeatures to use delta not absolute settings"

This reverts commit 3a748cbf86cea3844fada04eeff4cc64b01f67e0.
I'm reverting this commit because I forgot to format the commit message
pr

Revert "Modify FPFeatures to use delta not absolute settings"

This reverts commit 3a748cbf86cea3844fada04eeff4cc64b01f67e0.
I'm reverting this commit because I forgot to format the commit message
propertly. Sorry for the thrash.

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Modify FPFeatures to use delta not absolute settings

Reapply "Add support for #pragma float_control" with buildbot fixes
Add support for #pragma float_control

Reviewers: rjmccall, erichkeane, sepavloff

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

Reapply "Add support for #pragma float_control" with buildbot fixes
Add support for #pragma float_control

Reviewers: rjmccall, erichkeane, sepavloff

Differential Revision: https://reviews.llvm.org/D72841

This reverts commit fce82c0ed310174fe48e2402ac731b6340098389.

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Revert "Reapply "Add support for #pragma float_control" with improvements to"

This reverts commit 69aacaf699922ffe0450f567e21208c10c84731f.

Reapply "Add support for #pragma float_control" with improvements to
test cases
Add support for #pragma float_control

Reviewers: rjmccall, erichkeane, sepavloff

Differential Revision: https://revie

Reapply "Add support for #pragma float_control" with improvements to
test cases
Add support for #pragma float_control

Reviewers: rjmccall, erichkeane, sepavloff

Differential Revision: https://reviews.llvm.org/D72841

This reverts commit 85dc033caccaa6ab919d57f9759290be41240146, and makes
corrections to the test cases that failed on buildbots.

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Revert "Add support for #pragma float_control"

This reverts commit 4f1e9a17e9d28bdfd035313c96b3a5d4c91a7733.
due to fail on buildbot, sorry for the noise

Add support for #pragma float_control

Reviewers: rjmccall, erichkeane, sepavloff

Differential Revision: https://reviews.llvm.org/D72841

[NFC] Refactoring PropertyAttributeKind for ObjCPropertyDecl and ObjCDeclSpec.

This is a code clean up of the PropertyAttributeKind and
ObjCPropertyAttributeKind enums in ObjCPropertyDecl and ObjCDe

[NFC] Refactoring PropertyAttributeKind for ObjCPropertyDecl and ObjCDeclSpec.

This is a code clean up of the PropertyAttributeKind and
ObjCPropertyAttributeKind enums in ObjCPropertyDecl and ObjCDeclSpec that are
exactly identical. This non-functional change consolidates these enums
into one. The changes are to many files across clang (and comments in LLVM) so
that everything refers to the new consolidated enum in DeclObjCCommon.h.

2nd Landing Attempt...

Differential Revision: https://reviews.llvm.org/D77233

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