clang::CodeGen::CodeGenFunction::OMPPrivateScope Class Reference

The scope used to remap some variables as private in the OpenMP loop body (or other captured region emitted without outlining), and to restore old vars back on exit. More...

#include "/home/buildbot/as-worker-4/publish-doxygen-docs/llvm-project/clang/lib/CodeGen/CodeGenFunction.h"

Inheritance diagram for clang::CodeGen::CodeGenFunction::OMPPrivateScope:

Public Member Functions
	OMPPrivateScope (CodeGenFunction &CGF)
	Enter a new OpenMP private scope.
bool	addPrivate (const VarDecl *LocalVD, Address Addr)
	Registers LocalVD variable as a private with Addr as the address of the corresponding private variable.
bool	Privatize ()
	Privatizes local variables previously registered as private.
void	ForceCleanup ()
	~OMPPrivateScope ()
	Exit scope - all the mapped variables are restored.
bool	isGlobalVarCaptured (const VarDecl *VD) const
	Checks if the global variable is captured in current function.
void	restoreMap ()
	Restore all mapped variables w/o clean up.
Public Member Functions inherited from clang::CodeGen::CodeGenFunction::RunCleanupsScope
	RunCleanupsScope (CodeGenFunction &CGF)
	Enter a new cleanup scope.
	~RunCleanupsScope ()
	Exit this cleanup scope, emitting any accumulated cleanups.
bool	requiresCleanups () const
	Determine whether this scope requires any cleanups.
void	ForceCleanup (std::initializer_list< llvm::Value ** > ValuesToReload={})
	Force the emission of cleanups now, instead of waiting until this object is destroyed.

Additional Inherited Members
Protected Attributes inherited from clang::CodeGen::CodeGenFunction::RunCleanupsScope
bool	PerformCleanup
CodeGenFunction &	CGF

Detailed Description

The scope used to remap some variables as private in the OpenMP loop body (or other captured region emitted without outlining), and to restore old vars back on exit.

Definition at line 1164 of file CodeGenFunction.h.

Constructor & Destructor Documentation

OMPPrivateScope()

clang::CodeGen::CodeGenFunction::OMPPrivateScope::OMPPrivateScope ( CodeGenFunction &  CGF )

inlineexplicit

Enter a new OpenMP private scope.

Definition at line 1171 of file CodeGenFunction.h.

~OMPPrivateScope()

clang::CodeGen::CodeGenFunction::OMPPrivateScope::~OMPPrivateScope ( )

inline

Exit scope - all the mapped variables are restored.

Definition at line 1199 of file CodeGenFunction.h.

References ForceCleanup(), and clang::CodeGen::CodeGenFunction::RunCleanupsScope::PerformCleanup.

Member Function Documentation

addPrivate()

bool clang::CodeGen::CodeGenFunction::OMPPrivateScope::addPrivate ( const VarDecl *  LocalVD, Address  Addr  )

inline

Registers LocalVD variable as a private with Addr as the address of the corresponding private variable.

PrivateGen is the address of the generated private variable.

Returns

true if the variable is registered as private, false if it has been privatized already.

Definition at line 1178 of file CodeGenFunction.h.

References clang::CodeGen::CodeGenFunction::RunCleanupsScope::CGF, clang::CodeGen::CodeGenFunction::RunCleanupsScope::PerformCleanup, and clang::CodeGen::CodeGenFunction::OMPMapVars::setVarAddr().

Referenced by clang::CodeGen::CGOpenMPRuntime::emitReduction().

ForceCleanup()

void clang::CodeGen::CodeGenFunction::OMPPrivateScope::ForceCleanup ( )

inline

Definition at line 1193 of file CodeGenFunction.h.

References clang::CodeGen::CodeGenFunction::RunCleanupsScope::ForceCleanup(), and restoreMap().

Referenced by ~OMPPrivateScope().

isGlobalVarCaptured()

bool clang::CodeGen::CodeGenFunction::OMPPrivateScope::isGlobalVarCaptured ( const VarDecl *  VD ) const

inline

Checks if the global variable is captured in current function.

Definition at line 1205 of file CodeGenFunction.h.

References clang::CodeGen::CodeGenFunction::RunCleanupsScope::CGF, clang::VarDecl::getCanonicalDecl(), and clang::VarDecl::isLocalVarDeclOrParm().

Privatize()

bool clang::CodeGen::CodeGenFunction::OMPPrivateScope::Privatize ( )

inline

Privatizes local variables previously registered as private.

Registration is separate from the actual privatization to allow initializers use values of the original variables, not the private one. This is important, for example, if the private variable is a class variable initialized by a constructor that references other private variables. But at initialization original variables must be used, not private copies.

Returns

true if at least one variable was privatized, false otherwise.

Definition at line 1191 of file CodeGenFunction.h.

References clang::CodeGen::CodeGenFunction::OMPMapVars::apply(), and clang::CodeGen::CodeGenFunction::RunCleanupsScope::CGF.

Referenced by clang::CodeGen::CGOpenMPRuntime::emitReduction().

restoreMap()

void clang::CodeGen::CodeGenFunction::OMPPrivateScope::restoreMap ( )

inline

Restore all mapped variables w/o clean up.

This is usefully when we want to reference the original variables but don't want the clean up because that could emit lifetime end too early, causing backend issue #56913.

Definition at line 1213 of file CodeGenFunction.h.

References clang::CodeGen::CodeGenFunction::RunCleanupsScope::CGF, and clang::CodeGen::CodeGenFunction::OMPMapVars::restore().

Referenced by ForceCleanup().

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

• lib/CodeGen/CodeGenFunction.h