LLVM
15.0.0git
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A collection of metadata nodes that might be associated with a memory access used by the alias-analysis infrastructure. More...
#include "llvm/IR/Metadata.h"
Public Member Functions | |
AAMDNodes ()=default | |
AAMDNodes (MDNode *T, MDNode *TS, MDNode *S, MDNode *N) | |
bool | operator== (const AAMDNodes &A) const |
bool | operator!= (const AAMDNodes &A) const |
operator bool () const | |
AAMDNodes | intersect (const AAMDNodes &Other) const |
Given two sets of AAMDNodes that apply to the same pointer, give the best AAMDNodes that are compatible with both (i.e. More... | |
AAMDNodes | shift (size_t Offset) const |
Create a new AAMDNode that describes this AAMDNode after applying a constant offset to the start of the pointer. More... | |
AAMDNodes | extendTo (ssize_t Len) const |
Create a new AAMDNode that describes this AAMDNode after extending it to apply to a series of bytes of length Len. More... | |
AAMDNodes | merge (const AAMDNodes &Other) const |
Given two sets of AAMDNodes applying to potentially different locations, determine the best AAMDNodes that apply to both. More... | |
AAMDNodes | concat (const AAMDNodes &Other) const |
Determine the best AAMDNodes after concatenating two different locations together. More... | |
Static Public Member Functions | |
static MDNode * | shiftTBAA (MDNode *M, size_t off) |
static MDNode * | shiftTBAAStruct (MDNode *M, size_t off) |
static MDNode * | extendToTBAA (MDNode *TBAA, ssize_t len) |
Public Attributes | |
MDNode * | TBAA = nullptr |
The tag for type-based alias analysis. More... | |
MDNode * | TBAAStruct = nullptr |
The tag for type-based alias analysis (tbaa struct). More... | |
MDNode * | Scope = nullptr |
The tag for alias scope specification (used with noalias). More... | |
MDNode * | NoAlias = nullptr |
The tag specifying the noalias scope. More... | |
A collection of metadata nodes that might be associated with a memory access used by the alias-analysis infrastructure.
Definition at line 652 of file Metadata.h.
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explicitdefault |
Definition at line 654 of file Metadata.h.
References T.
Determine the best AAMDNodes after concatenating two different locations together.
Different from merge
, where different locations should overlap each other, concat
puts non-overlapping locations together.
Definition at line 532 of file TypeBasedAliasAnalysis.cpp.
References llvm::MDNode::getMostGenericAliasScope(), llvm::MDNode::intersect(), NoAlias, Other, and Scope.
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inline |
Create a new AAMDNode that describes this AAMDNode after extending it to apply to a series of bytes of length Len.
A size of -1 denotes an unknown size.
Definition at line 719 of file Metadata.h.
References extendToTBAA(), NoAlias, Scope, TBAA, and TBAAStruct.
Definition at line 789 of file TypeBasedAliasAnalysis.cpp.
References llvm::ConstantInt::equalsInt(), llvm::ConstantInt::get(), llvm::ConstantAsMetadata::get(), llvm::MDNode::get(), llvm::MDNode::getContext(), llvm::ConstantInt::getType(), isStructPathTBAA(), and llvm::MDNode::operands().
Referenced by extendTo().
Given two sets of AAMDNodes that apply to the same pointer, give the best AAMDNodes that are compatible with both (i.e.
a set of nodes whose allowable aliasing conclusions are a subset of those allowable by both of the inputs). However, for efficiency reasons, do not create any new MDNodes.
Definition at line 695 of file Metadata.h.
References NoAlias, Other, Scope, TBAA, and TBAAStruct.
Given two sets of AAMDNodes applying to potentially different locations, determine the best AAMDNodes that apply to both.
Definition at line 523 of file TypeBasedAliasAnalysis.cpp.
References llvm::MDNode::getMostGenericAliasScope(), llvm::MDNode::getMostGenericTBAA(), llvm::MDNode::intersect(), NoAlias, Other, Scope, and TBAA.
Referenced by mergeConditionalStoreToAddress(), llvm::InstCombinerImpl::mergeStoreIntoSuccessor(), and llvm::promoteLoopAccessesToScalars().
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inlineexplicit |
Definition at line 664 of file Metadata.h.
References NoAlias, Scope, TBAA, and TBAAStruct.
Definition at line 662 of file Metadata.h.
Definition at line 657 of file Metadata.h.
References NoAlias, Scope, TBAA, and TBAAStruct.
Create a new AAMDNode that describes this AAMDNode after applying a constant offset to the start of the pointer.
Definition at line 706 of file Metadata.h.
References NoAlias, Scope, shiftTBAA(), shiftTBAAStruct(), TBAA, and TBAAStruct.
Definition at line 740 of file TypeBasedAliasAnalysis.cpp.
References isStructPathTBAA().
Referenced by shift().
Definition at line 759 of file TypeBasedAliasAnalysis.cpp.
References llvm::ConstantInt::get(), llvm::ConstantAsMetadata::get(), llvm::MDNode::get(), llvm::MDNode::getContext(), llvm::MDNode::getNumOperands(), llvm::MDNode::getOperand(), llvm::ConstantInt::getType(), llvm::ConstantInt::getZExtValue(), i, and llvm::size().
Referenced by shift().
MDNode* llvm::AAMDNodes::NoAlias = nullptr |
The tag specifying the noalias scope.
Definition at line 678 of file Metadata.h.
Referenced by llvm::ScopedNoAliasAAResult::alias(), concat(), extendTo(), llvm::DenseMapInfo< AAMDNodes >::getHashValue(), llvm::ScopedNoAliasAAResult::getModRefInfo(), intersect(), merge(), operator bool(), operator==(), llvm::MachineMemOperand::print(), and shift().
MDNode* llvm::AAMDNodes::Scope = nullptr |
The tag for alias scope specification (used with noalias).
Definition at line 675 of file Metadata.h.
Referenced by llvm::ScopedNoAliasAAResult::alias(), concat(), extendTo(), llvm::DenseMapInfo< AAMDNodes >::getHashValue(), llvm::ScopedNoAliasAAResult::getModRefInfo(), intersect(), merge(), operator bool(), operator==(), llvm::MachineMemOperand::print(), and shift().
MDNode* llvm::AAMDNodes::TBAA = nullptr |
The tag for type-based alias analysis.
Definition at line 669 of file Metadata.h.
Referenced by llvm::TypeBasedAAResult::alias(), extendTo(), llvm::DenseMapInfo< AAMDNodes >::getHashValue(), getMemcpyLoadsAndStores(), getMemmoveLoadsAndStores(), getMemsetStores(), llvm::TypeBasedAAResult::getModRefInfo(), intersect(), merge(), operator bool(), operator==(), llvm::TypeBasedAAResult::pointsToConstantMemory(), llvm::MachineMemOperand::print(), and shift().
MDNode* llvm::AAMDNodes::TBAAStruct = nullptr |
The tag for type-based alias analysis (tbaa struct).
Definition at line 672 of file Metadata.h.
Referenced by extendTo(), llvm::DenseMapInfo< AAMDNodes >::getHashValue(), getMemcpyLoadsAndStores(), getMemmoveLoadsAndStores(), getMemsetStores(), intersect(), operator bool(), operator==(), and shift().