[clang][bytecode] Fix dummy handling for p2280r4 (#124396)

This makes some other problems show up like the fact that we didn't
suppress diagnostics during __builtin_constant_p evaluation.

[clang][bytecode] Fix discarding DerivedToBase casts (#123523)

[clang][bytecode][NFC] Use FixedPoint opaque int API (#123522)

Now that we have it, use it.

[clang][bytecode] Register decomposition holding vars (#123515)

[clang][bytecode][NFC] Simplify visitDeclRef (#123380)

Try to reduce indentation here.

[clang][bytecode] Revisit global variables separately (#123358)

Call `EvaluateAsInitializer()` explicitly here, so we don't abort the
evaluation of the `DeflRefExpr` just because the initializer of

[clang][bytecode] Revisit global variables separately (#123358)

Call `EvaluateAsInitializer()` explicitly here, so we don't abort the
evaluation of the `DeflRefExpr` just because the initializer of that
global variable failed.

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[clang][bytecode] Fix rejecting invalid sizeof expressions (#123332)

Emit the invalid note instead of nothing.

[clang][bytecode] Add InitLinkScope for toplevel Expr temporary (#123319)

[clang][bytecode][NFC] Simplify VisitCXXDefaultArgExpr (#123024)

We have `discard()` these days.

[clang][bytecode] Handle UETT_PtrAuthTypeDiscriminator (#122941)

[clang][bytecode] Add init link for the RVO ptr (#122904)

[clang][bytecode] Change the way we do init chains (#122871)

See the comment in Compiler<>::VisitCXXThisExpr.
We need to mark the InitList explicitly, so we later know what to refer
to when the init

[clang][bytecode] Change the way we do init chains (#122871)

See the comment in Compiler<>::VisitCXXThisExpr.
We need to mark the InitList explicitly, so we later know what to refer
to when the init chain is active.

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[clang][bytecode] Add support for typeid pointers (#121251)

Add it as another kind of pointer, saving both a `Type*` for the result
of the typeid() expression as well as one for the type of the type

[clang][bytecode] Add support for typeid pointers (#121251)

Add it as another kind of pointer, saving both a `Type*` for the result
of the typeid() expression as well as one for the type of the typeid
expression.

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[clang][bytecode] Create local scopes for if then/else statements (#120852)

In case those aren't compound statements.

[clang][bytecode] Remove a bitcast nullptr_t special case (#120188)

We still need to check the input pointer, so let this go through
BitCastPrim.

[clang][bytecode] Check primitive bit casts for indeterminate bits (#118954)

Record bits ranges of initialized bits and check them in
allInitialized().

[clang][bytecode] Not all null pointers are 0 (#118601)

Get the Value from the ASTContext instead.

[clang][bytecode] Fix `__extension__` handling for vector operators (#118482)

Don't reject them, but delegate to the subexpression.

[clang][bytecode] Fix discarded pointer subtractions (#118477)

We need to pop the value.

[clang][bytecode][NFC] Reject invalid FromTypes in emitBuiltinBitcast (#118274)

instead of silently accepting them and failing later.

[clang][bytecode] Support vector-to-vector bitcasts (#118230)

[clang][bytecode] Use bitcasts to cast from integer to vector (#117547)

In C, a cast from an integer to a vector is a CK_BitCast. Implement this
using the same code we use for __builtin_bit_cast.

[clang][bytecode] Support ImplicitValueInitExpr for multi-dim arrays (#117312)

The attached test case from
https://github.com/llvm/llvm-project/issues/117294 used to cause an
assertion because we ca

[clang][bytecode] Support ImplicitValueInitExpr for multi-dim arrays (#117312)

The attached test case from
https://github.com/llvm/llvm-project/issues/117294 used to cause an
assertion because we called classifPrim() on an array type.

The new result doesn't crash but isn't exactly perfect either. Since the
problem arises when evaluating an ImplicitValueInitExpr, we have no
proper source location to point to. Point to the caller instead.

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[AST] Migrate away from PointerUnion::{is,get} (NFC) (#117469)

Note that PointerUnion::{is,get} have been soft deprecated in
PointerUnion.h:

// FIXME: Replace the uses of is(), get() and dyn_c

[AST] Migrate away from PointerUnion::{is,get} (NFC) (#117469)

Note that PointerUnion::{is,get} have been soft deprecated in
PointerUnion.h:

// FIXME: Replace the uses of is(), get() and dyn_cast() with
// isa<T>, cast<T> and the llvm::dyn_cast<T>

I'm not touching PointerUnion::dyn_cast for now because it's a bit
complicated; we could blindly migrate it to dyn_cast_if_present, but
we should probably use dyn_cast when the operand is known to be
non-null.

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[clang][bytecode] Fix discarding __builtin_bit_cast calls (#114926)

Optionally prepare storage for the result and do the bitcast anyway, to
get the right diagnostic output.