Reapply "[clang] Avoid re-evaluating field bitwidth" (#122289)

Revert "[clang] Avoid re-evaluating field bitwidth (#117732)"

This reverts commit 81fc3add1e627c23b7270fe2739cdacc09063e54.

This breaks some LLDB tests, e.g.
SymbolFile/DWARF/x86/no_unique_address-

Revert "[clang] Avoid re-evaluating field bitwidth (#117732)"

This reverts commit 81fc3add1e627c23b7270fe2739cdacc09063e54.

This breaks some LLDB tests, e.g.
SymbolFile/DWARF/x86/no_unique_address-with-bitfields.cpp:

lldb: ../llvm-project/clang/lib/AST/Decl.cpp:4604: unsigned int clang::FieldDecl::getBitWidthValue() const: Assertion `isa<ConstantExpr>(getBitWidth())' failed.

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[clang] Avoid re-evaluating field bitwidth (#117732)

Save the bitwidth value as a `ConstantExpr` with the value set. Remove
the `ASTContext` parameter from `getBitWidthValue()`, so the latter
simply

[clang] Avoid re-evaluating field bitwidth (#117732)

Save the bitwidth value as a `ConstantExpr` with the value set. Remove
the `ASTContext` parameter from `getBitWidthValue()`, so the latter
simply returns the value from the `ConstantExpr` instead of
constant-evaluating the bitwidth expression every time it is called.

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[clang][bytecode] Consider start index when copying composite array (#121461)

... elements.

[clang][bytecode] Support pointers in __builtin_mem{move,cpy} (#120560)

Unfortunately, that means we can't use the __builtin_bit_cast
implementation for this.

[clang][bytecode] Fix memcmp/bcmp failures on big-endian hosts (#119851)

See the discussion in

https://github.com/llvm/llvm-project/pull/119678#issuecomment-2539680746
and
https://github.com/llvm/l

[clang][bytecode] Fix memcmp/bcmp failures on big-endian hosts (#119851)

See the discussion in

https://github.com/llvm/llvm-project/pull/119678#issuecomment-2539680746
and
https://github.com/llvm/llvm-project/pull/119544#issuecomment-2539678561

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[clang][bytecode] Handle __builtin_memcmp (#119544)

[clang][bytecode][NFC] Avoid calling ASTContext::getTypeSize() (#119392)

In the case of primitive arrays, we can do this once and reuse the value
for all elements.

[clang][bytecode] Check vector element types for eligibility (#119385)

Like we do in ExprConstant.cpp.

[clang][bytecode] Pass (float) BitWidth to DoBitCast (#119119)

In certain cases (i.e. long double on x86), the bit with we get from the
floating point semantics is different than the type size we co

[clang][bytecode] Pass (float) BitWidth to DoBitCast (#119119)

In certain cases (i.e. long double on x86), the bit with we get from the
floating point semantics is different than the type size we compute for
the BitCast instruction. Pass this along to DoBitCast, so in there we
can check only the relevant bits for being initialized.

This also fixes a weirdness we still had in DoBitCast.

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[clang][bytecode][NFC] Remove leftover debug output

[clang][bytecode] Check composite bitcasts for indeterminate bits (#118988)

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

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

[clang][bytecode] Fix bitcasting from null pointers (#116999)

[clang][bytecode] Pass __builtin_memcpy size along (#118649)

To DoBitCastPtr, so we know how many bytes we want to read.

[clang][bytecode] Initialize bases when bitcasting (#117179)

Base pointers do not get passed to the callback, so initialize them when iterating bases.

Reapply "[clang][bytecode] Handle bitcasts involving bitfields (#116843)"

This reverts commit 54db16221c92eb52efbea90ad5b5d2a1d00cda3e.

Check for existence of __SIZOEF_INT128__ so we don't run thos

Reapply "[clang][bytecode] Handle bitcasts involving bitfields (#116843)"

This reverts commit 54db16221c92eb52efbea90ad5b5d2a1d00cda3e.

Check for existence of __SIZOEF_INT128__ so we don't run those
tests on targets that don't have int128.

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Revert "[clang][bytecode] Handle bitcasts involving bitfields (#116843)"

This reverts commit 4b5e7fa4de54e00df007ae5e2675393fd046aa59.

This breaks builders:
https://lab.llvm.org/buildbot/#/builders

Revert "[clang][bytecode] Handle bitcasts involving bitfields (#116843)"

This reverts commit 4b5e7fa4de54e00df007ae5e2675393fd046aa59.

This breaks builders:
https://lab.llvm.org/buildbot/#/builders/154/builds/8464

I guess some more testing on 32 bit hosts is needed.

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[clang][bytecode] Handle bitcasts involving bitfields (#116843)

Copy the data one bit at a time, leaving optimizations for future work.
Adds a BitcastBuffer that takes care of pushing the bits in th

[clang][bytecode] Handle bitcasts involving bitfields (#116843)

Copy the data one bit at a time, leaving optimizations for future work.
Adds a BitcastBuffer that takes care of pushing the bits in the right
order.

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[clang][bytecode] Fix ToType/FromType diagnostic ordering (#116988)

We need to check the ToType first, then the FromType. Additionally,
remove qualifiers from the parent type of the field we're emit

[clang][bytecode] Fix ToType/FromType diagnostic ordering (#116988)

We need to check the ToType first, then the FromType. Additionally,
remove qualifiers from the parent type of the field we're emitting a
note for.

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[AST] Remove unused includes (NFC) (#116549)

Identified with misc-include-cleaner.

[clang][bytecode] Fix bitcasting packed bool vectors (#114937)

This is a special case we need to handle. We don't do bitcasting _into_
such vectors yet though.

[clang][bytecode] Support bitcasting into float fields (#114825)

[clang][bytecode][NFC] Remove unused parameter from pushData() (#114801)

[clang][bytecode][NFC] Fix a possible build warning (#114800)

InterpBuiltinBitCast.cpp:95:3: warning: non-void function does not
return a value in all control paths [-Wreturn-type]
95 | }

[clang][bytecode][NFC] Fix a possible build warning (#114800)

InterpBuiltinBitCast.cpp:95:3: warning: non-void function does not
return a value in all control paths [-Wreturn-type]
95 | }
| ^
1 warning generated.

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