clang: clang::CodeGen::ArtificialLocation Class Reference

clang API Documentation

#include <CGDebugInfo.h>

Inheritance diagram for clang::CodeGen::ArtificialLocation:

Inheritance graph

Collaboration diagram for clang::CodeGen::ArtificialLocation:

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List of all members.

Public Member Functions
	ArtificialLocation (CodeGenFunction &CGF, CGBuilderTy &B)
void	Emit ()
	~ArtificialLocation ()
	Autorestore everything back to normal.

Detailed Description

ArtificialLocation - An RAII object that temporarily switches to an artificial debug location that has a valid scope, but no line information. This is useful when emitting compiler-generated helper functions that have no source location associated with them. The DWARF specification allows the compiler to use the special line number 0 to indicate code that can not be attributed to any source location.

This is necessary because passing an empty SourceLocation to CGDebugInfo::setLocation() will result in the last valid location being reused.

Definition at line 486 of file CGDebugInfo.h.

Constructor & Destructor Documentation

ArtificialLocation::ArtificialLocation	(	CodeGenFunction &	CGF,
		CGBuilderTy &	B
	)

Definition at line 80 of file CGDebugInfo.cpp.

References clang::CodeGen::SaveAndRestoreLocation::Builder, and clang::CodeGen::SaveAndRestoreLocation::DI.

ArtificialLocation::~ArtificialLocation ( )

Autorestore everything back to normal.

Definition at line 98 of file CGDebugInfo.cpp.

References clang::CodeGen::SaveAndRestoreLocation::Builder, and clang::CodeGen::SaveAndRestoreLocation::DI.

Member Function Documentation

void ArtificialLocation::Emit ( )

Set the current location to line 0, but within the current scope (= the top of the LexicalBlockStack).

Definition at line 86 of file CGDebugInfo.cpp.

References clang::CodeGen::SaveAndRestoreLocation::Builder, clang::CodeGen::SaveAndRestoreLocation::DI, clang::CodeGen::CGDebugInfo::EmitLocation(), and clang::CodeGen::SaveAndRestoreLocation::SavedLoc.

Referenced by clang::CodeGen::CodeGenFunction::GenerateCXXGlobalDtorsFunc(), and clang::CodeGen::CodeGenFunction::GenerateCXXGlobalInitFunc().

The documentation for this class was generated from the following files: