llvm::SubsumingPositionIterator Class Reference

A visitor class for IR positions. More...

#include "llvm/Transforms/IPO/Attributor.h"

Public Member Functions
LLVM_ABI	SubsumingPositionIterator (const IRPosition &IRP)
iterator	begin ()
iterator	end ()

Detailed Description

A visitor class for IR positions.

Given a position P, the SubsumingPositionIterator allows to visit "subsuming positions" wrt. attributes/information. Thus, if a piece of information holds for a subsuming position, it also holds for the position P.

The subsuming positions always include the initial position and then, depending on the position kind, additionally the following ones:

• for IRP_RETURNED:
  • the function (IRP_FUNCTION)
• for IRP_ARGUMENT:
  • the function (IRP_FUNCTION)
• for IRP_CALL_SITE:
  • the callee (IRP_FUNCTION), if known
• for IRP_CALL_SITE_RETURNED:
  • the callee (IRP_RETURNED), if known
  • the call site (IRP_FUNCTION)
  • the callee (IRP_FUNCTION), if known
• for IRP_CALL_SITE_ARGUMENT:
  • the argument of the callee (IRP_ARGUMENT), if known
  • the callee (IRP_FUNCTION), if known
  • the position the call site argument is associated with if it is not anchored to the call site, e.g., if it is an argument then the argument (IRP_ARGUMENT)

Definition at line 1123 of file Attributor.h.

Constructor & Destructor Documentation

SubsumingPositionIterator()

SubsumingPositionIterator::SubsumingPositionIterator

(

const IRPosition &

IRP

)

Definition at line 1269 of file Attributor.cpp.

References llvm::IRPosition::argument(), assert(), llvm::IRPosition::callsite_argument(), llvm::IRPosition::callsite_function(), llvm::cast(), llvm::dyn_cast(), llvm::dyn_cast_if_present(), llvm::IRPosition::function(), llvm::IRPosition::getAnchorScope(), llvm::IRPosition::getAnchorValue(), llvm::IRPosition::getAssociatedArgument(), llvm::IRPosition::getAssociatedValue(), getIntrinsicID(), llvm::IRPosition::getPositionKind(), llvm::IRPosition::IRP_ARGUMENT, llvm::IRPosition::IRP_CALL_SITE, llvm::IRPosition::IRP_CALL_SITE_ARGUMENT, llvm::IRPosition::IRP_CALL_SITE_RETURNED, llvm::IRPosition::IRP_FLOAT, llvm::IRPosition::IRP_FUNCTION, llvm::IRPosition::IRP_INVALID, llvm::IRPosition::IRP_RETURNED, llvm::isa(), llvm::IRPosition::returned(), and llvm::IRPosition::value().

Member Function Documentation

begin()

iterator llvm::SubsumingPositionIterator::begin ( )

inline

Definition at line 1129 of file Attributor.h.

end()

iterator llvm::SubsumingPositionIterator::end ( )

inline

Definition at line 1130 of file Attributor.h.

---

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

• include/llvm/Transforms/IPO/Attributor.h
• lib/Transforms/IPO/Attributor.cpp