[lldb] Use value_or instead of getValueOr (NFC)

Adapt IRForTarget::RewriteObjCConstStrings() for D126689.

With opaque pointers, the LLVM IR expected by this function changed.

Adapt IRForTarget::RewriteObjCSelector() for D126689.

With opaque pointers, the LLVM IR expected by this function changed.

[lldb] Avoid pointer element type accesses

[lldb] Remove some uses of getPointerElementType()

While in the area, remove some uses of getPointerElementType()
that have obvious replacements.

[lldb] Remove uses of PointerType::getElementType()

This method has been deprecated and removed. I missed these usages
in lldb previously.

[lldb] Rename Logging.h to LLDBLog.h and clean up includes

Most of our code was including Log.h even though that is not where the
"lldb" log channel is defined (Log.h defines the generic logging
inf

[lldb] Rename Logging.h to LLDBLog.h and clean up includes

Most of our code was including Log.h even though that is not where the
"lldb" log channel is defined (Log.h defines the generic logging
infrastructure). This worked because Log.h included Logging.h, even
though it should.

After the recent refactor, it became impossible the two files include
each other in this direction (the opposite inclusion is needed), so this
patch removes the workaround that was put in place and cleans up all
files to include the right thing. It also renames the file to LLDBLog to
better reflect its purpose.

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[lldb] Convert "LLDB" log channel to the new API

Use isa instead of dyn_cast (NFC)

[lldb, mlir] Migrate from getNumArgOperands and arg_operands (NFC)

Note that getNumArgOperands and arg_operands are considered legacy
names. See llvm/include/llvm/IR/InstrTypes.h for details.

[IR] Add GEPOperator::indices() (NFC)

In order to mirror the GetElementPtrInst::indices() API.

Wanted to use this in the IRForTarget code, and was surprised to
find that it didn't exist yet.

[IRForTarget] Don't pass nullptr to GetElementPtrInst::Create() (NFC)

In one case use the source element type of the original GEP. In the
other the correct type isn't obvious to me, so use
getPointe

[IRForTarget] Don't pass nullptr to GetElementPtrInst::Create() (NFC)

In one case use the source element type of the original GEP. In the
other the correct type isn't obvious to me, so use
getPointerElementType() for now.

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[lldb] Replace default bodies of special member functions with = default;

Replace default bodies of special member functions with = default;

$ run-clang-tidy.py -header-filter='lldb' -checks='-*,mo

[lldb] Replace default bodies of special member functions with = default;

Replace default bodies of special member functions with = default;

$ run-clang-tidy.py -header-filter='lldb' -checks='-*,modernize-use-equals-default' -fix ,

https://clang.llvm.org/extra/clang-tidy/checks/modernize-use-equals-default.html

Differential revision: https://reviews.llvm.org/D104041

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[lldb][NFC] Remove misleading ModulePass base class for IRForTarget

IRForTarget is never used by a pass manager or any other interface that requires
this class to inherit from `Pass`.

Also IRForTar

[lldb][NFC] Remove misleading ModulePass base class for IRForTarget

IRForTarget is never used by a pass manager or any other interface that requires
this class to inherit from `Pass`.

Also IRForTarget doesn't implement the current interface correctly because it
uses the `runOnModule` return value to indicate success/failure instead of
changed/not-changed, so if this ever ends up being used as a pass it would most
likely not work as intended.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D102677

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[lldb][NFC] Cleanup IRForTarget member initializers

Note that the FunctionCallee members aren't pointer, so the nullptr was just
an alternative way to call the default constructor.

Thread ExecutionContextScope through GetByteSize where possible (NFC-ish)

This patch has no effect for C and C++. In more dynamic languages,
such as Objective-C and Swift GetByteSize() needs to call

Thread ExecutionContextScope through GetByteSize where possible (NFC-ish)

This patch has no effect for C and C++. In more dynamic languages,
such as Objective-C and Swift GetByteSize() needs to call into the
language runtime, so it's important to pass one in where possible. My
primary motivation for this is some work I'm doing on the Swift
branch, however, it looks like we are also seeing warnings in
Objective-C that this may resolve. Everything in the SymbolFile
hierarchy still passes in nullptrs, because we don't have an execution
context in SymbolFile, since SymbolFile transcends processes.

Differential Revision: https://reviews.llvm.org/D84267

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[lldb] Use std::make_unique<> (NFC)

Update the rest of lldb to use std::make_unique<>. I used clang-tidy to
automate this, which probably missed cases that are wrapped in ifdefs.

[IR] Replace all uses of CallBase::getCalledValue() with getCalledOperand().

This method has been commented as deprecated for a while. Remove
it and replace all uses with the equivalent getCalledOpe

[IR] Replace all uses of CallBase::getCalledValue() with getCalledOperand().

This method has been commented as deprecated for a while. Remove
it and replace all uses with the equivalent getCalledOperand().

I also made a few cleanups in here. For example, to removes use
of getElementType on a pointer when we could just use getFunctionType
from the call.

Differential Revision: https://reviews.llvm.org/D78882

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[lldb] Reformat 'Fix breakage introduced by llvm::LoadInst api change' (NFC)

[lldb] Fix breakeage introduced by llvm::LoadInst api change

[lldb] Re-add nullptr check to IRForTarget::RewriteObjCConstString log statement

The nullptr check here was removed in 4ef50a33b12825593a82ca8ea97158b7b71b348e
when I replaced (nearly) all log->Prin

[lldb] Re-add nullptr check to IRForTarget::RewriteObjCConstString log statement

The nullptr check here was removed in 4ef50a33b12825593a82ca8ea97158b7b71b348e
when I replaced (nearly) all log->Print to LLDB_LOG calls (which automatically
check for this stuff). But it seems this one call escaped my sed call.

Currently working on a test that can cover this code path but we can revert
this until I have found one.

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[lldb] Move clang-based files out of Symbol

Summary:
This change represents the move of ClangASTImporter, ClangASTMetadata,
ClangExternalASTSourceCallbacks, ClangUtil, CxxModuleHandler, and
TypeSyst

[lldb] Move clang-based files out of Symbol

Summary:
This change represents the move of ClangASTImporter, ClangASTMetadata,
ClangExternalASTSourceCallbacks, ClangUtil, CxxModuleHandler, and
TypeSystemClang from lldbSource to lldbPluginExpressionParserClang.h

This explicitly removes knowledge of clang internals from lldbSymbol,
moving towards a more generic core implementation of lldb.

Reviewers: JDevlieghere, davide, aprantl, teemperor, clayborg, labath, jingham, shafik

Subscribers: emaste, mgorny, arphaman, jfb, usaxena95, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D73661

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[lldb][NFC] Remove TypeSystemClang::GetASTContext calls in IRForTarget

Similar to previous commits, this just replaces the lookup in the
global map with the reference to the TypeSystemClang instance

[lldb][NFC] Remove TypeSystemClang::GetASTContext calls in IRForTarget

Similar to previous commits, this just replaces the lookup in the
global map with the reference to the TypeSystemClang instance we already
have in this context.

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Make llvm::StringRef to std::string conversions explicit.

This is how it should've been and brings it more in line with
std::string_view. There should be no functional change here.

This is mostly m

Make llvm::StringRef to std::string conversions explicit.

This is how it should've been and brings it more in line with
std::string_view. There should be no functional change here.

This is mostly mechanical from a custom clang-tidy check, with a lot of
manual fixups. It uncovers a lot of minor inefficiencies.

This doesn't actually modify StringRef yet, I'll do that in a follow-up.

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[lldb][NFC] Fix all formatting errors in .cpp file headers

Summary:
A *.cpp file header in LLDB (and in LLDB) should like this:
```
//===-- TestUtilities.cpp ----------------------------------------

[lldb][NFC] Fix all formatting errors in .cpp file headers

Summary:
A *.cpp file header in LLDB (and in LLDB) should like this:
```
//===-- TestUtilities.cpp -------------------------------------------------===//
```
However in LLDB most of our source files have arbitrary changes to this format and
these changes are spreading through LLDB as folks usually just use the existing
source files as templates for their new files (most notably the unnecessary
editor language indicator `-*- C++ -*-` is spreading and in every review
someone is pointing out that this is wrong, resulting in people pointing out that this
is done in the same way in other files).

This patch removes most of these inconsistencies including the editor language indicators,
all the different missing/additional '-' characters, files that center the file name, missing
trailing `===//` (mostly caused by clang-format breaking the line).

Reviewers: aprantl, espindola, jfb, shafik, JDevlieghere

Reviewed By: JDevlieghere

Subscribers: dexonsmith, wuzish, emaste, sdardis, nemanjai, kbarton, MaskRay, atanasyan, arphaman, jfb, abidh, jsji, JDevlieghere, usaxena95, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D73258

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