InterpBuiltinBitCast.cpp File Reference (original) (raw)

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Functions
static bool	enumerateData (const Pointer &P, const Context &Ctx, Bits Offset, Bits BitsToRead, DataFunc F)
	We use this to recursively iterate over all fields and elements of a pointer and extract relevant data for a bitcast.

static bool	enumeratePointerFields (const Pointer &P, const Context &Ctx, Bits BitsToRead, DataFunc F)

static bool	CheckBitcastType (InterpState &S, CodePtr OpPC, QualType T, bool IsToType)

◆ BITCAST_TYPE_SWITCH

| #define BITCAST_TYPE_SWITCH | ( | | Expr, | | ----------------------------- | - | | ------------------------------------ | | | B | | | | | ) | | | |

Value:

do { \

switch (Expr) { \

TYPE_SWITCH_CASE(PT_Bool, B) \

default: \

llvm_unreachable("Unhandled bitcast type"); \

} \

} while (0)

This represents one expression.

Definition at line 40 of file InterpBuiltinBitCast.cpp.

◆ BITCAST_TYPE_SWITCH_FIXED_SIZE

| #define BITCAST_TYPE_SWITCH_FIXED_SIZE | ( | | Expr, | | ------------------------------------------ | - | | ------------------------------------ | | | B | | | | | ) | | | |

Value:

do { \

switch (Expr) { \

TYPE_SWITCH_CASE(PT_Bool, B) \

default: \

llvm_unreachable("Unhandled bitcast type"); \

} \

} while (0)

Definition at line 59 of file InterpBuiltinBitCast.cpp.

◆ DataFunc

Implement __builtin_bit_cast and related operations.

Since our internal representation for data is more complex than something we can simply memcpy or memcmp, we first bitcast all the data into a buffer, which we then later use to copy the data into the target. Used to iterate over pointer fields.

Definition at line 36 of file InterpBuiltinBitCast.cpp.

◆ CheckBitcastType()

Definition at line 170 of file InterpBuiltinBitCast.cpp.

References CheckBitcastType(), E, clang::Type::getAs(), clang::Type::getAsRecordDecl(), clang::Sema::getASTContext(), clang::ASTContext::getBaseElementType(), clang::ASTContext::getCharWidth(), clang::ASTContext::getFloatTypeSemantics(), clang::Stmt::getSourceRange(), clang::ASTContext::getTypeSize(), clang::Type::isArrayType(), clang::Type::isExtVectorBoolType(), clang::Type::isMemberPointerType(), clang::Type::isPointerType(), clang::Type::isRealFloatingType(), clang::Type::isUnionType(), and clang::T.

Referenced by CheckBitcastType(), clang::interp::DoBitCast(), and clang::interp::DoBitCastPtr().

◆ enumerateData()

We use this to recursively iterate over all fields and elements of a pointer and extract relevant data for a bitcast.

Definition at line 78 of file InterpBuiltinBitCast.cpp.