LoopAnalysisManager.h File Reference

This header provides classes for managing per-loop analyses. More...

#include "llvm/IR/PassManager.h"
#include "llvm/Support/Compiler.h"

Go to the source code of this file.

Classes
struct	llvm::LoopStandardAnalysisResults
	The adaptor from a function pass to a loop pass computes these analyses and makes them available to the loop passes "for free". More...
class	llvm::LoopAnalysisManagerFunctionProxy::Result
	A specialized result for the LoopAnalysisManagerFunctionProxy which retains a LoopInfo reference. More...

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

Typedefs
typedef AnalysisManager< Loop, LoopStandardAnalysisResults & >	llvm::LoopAnalysisManager
	The loop analysis manager.
typedef InnerAnalysisManagerProxy< LoopAnalysisManager, Function >	llvm::LoopAnalysisManagerFunctionProxy
	A proxy from a LoopAnalysisManager to a Function.
typedef OuterAnalysisManagerProxy< FunctionAnalysisManager, Loop, LoopStandardAnalysisResults & >	llvm::FunctionAnalysisManagerLoopProxy
	A proxy from a FunctionAnalysisManager to a Loop.

Functions
LLVM_ABI PreservedAnalyses	llvm::getLoopPassPreservedAnalyses ()
	Returns the minimum set of Analyses that all loop passes must preserve.

Variables
template class LLVM_TEMPLATE_ABI	llvm::AllAnalysesOn< Loop >
	Extern template declaration for the analysis set for this IR unit.
template class LLVM_TEMPLATE_ABI	llvm::AnalysisManager< Loop, LoopStandardAnalysisResults & >
template class LLVM_TEMPLATE_ABI	llvm::OuterAnalysisManagerProxy< FunctionAnalysisManager, Loop, LoopStandardAnalysisResults & >

Detailed Description

This header provides classes for managing per-loop analyses.

These are typically used as part of a loop pass pipeline over the loop nests of a function.

Loop analyses are allowed to make some simplifying assumptions: 1) Loops are, where possible, in simplified form. 2) Loops are always in LCSSA form. 3) A collection of analysis results are available:

• LoopInfo
• DominatorTree
• ScalarEvolution
• AAManager

The primary mechanism to provide these invariants is the loop pass manager, but they can also be manually provided in order to reason about a loop from outside of a dedicated pass manager.

Definition in file LoopAnalysisManager.h.