LLVM  8.0.0svn
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llvm::LegalizeRuleSet Class Reference

#include "llvm/CodeGen/GlobalISel/LegalizerInfo.h"

Public Member Functions

 LegalizeRuleSet ()
 
bool isAliasedByAnother ()
 
void setIsAliasedByAnother ()
 
void aliasTo (unsigned Opcode)
 
unsigned getAlias () const
 
LegalizeRuleSetlegalIf (LegalityPredicate Predicate)
 The instruction is legal if predicate is true. More...
 
LegalizeRuleSetlegalFor (std::initializer_list< LLT > Types)
 The instruction is legal when type index 0 is any type in the given list. More...
 
LegalizeRuleSetlegalFor (std::initializer_list< std::pair< LLT, LLT >> Types)
 The instruction is legal when type indexes 0 and 1 is any type pair in the given list. More...
 
LegalizeRuleSetlegalForTypesWithMemSize (std::initializer_list< LegalityPredicates::TypePairAndMemSize > TypesAndMemSize)
 The instruction is legal when type indexes 0 and 1 along with the memory size is any type and size tuple in the given list. More...
 
LegalizeRuleSetlegalForCartesianProduct (std::initializer_list< LLT > Types)
 The instruction is legal when type indexes 0 and 1 are both in the given list. More...
 
LegalizeRuleSetlegalForCartesianProduct (std::initializer_list< LLT > Types0, std::initializer_list< LLT > Types1)
 The instruction is legal when type indexes 0 and 1 are both their respective lists. More...
 
LegalizeRuleSetlower ()
 The instruction is lowered. More...
 
LegalizeRuleSetlowerIf (LegalityPredicate Predicate)
 The instruction is lowered if predicate is true. More...
 
LegalizeRuleSetlowerIf (LegalityPredicate Predicate, LegalizeMutation Mutation)
 The instruction is lowered if predicate is true. More...
 
LegalizeRuleSetlowerFor (std::initializer_list< LLT > Types)
 The instruction is lowered when type index 0 is any type in the given list. More...
 
LegalizeRuleSetlowerFor (std::initializer_list< LLT > Types, LegalizeMutation Mutation)
 The instruction is lowered when type index 0 is any type in the given list. More...
 
LegalizeRuleSetlowerFor (std::initializer_list< std::pair< LLT, LLT >> Types)
 The instruction is lowered when type indexes 0 and 1 is any type pair in the given list. More...
 
LegalizeRuleSetlowerFor (std::initializer_list< std::pair< LLT, LLT >> Types, LegalizeMutation Mutation)
 The instruction is lowered when type indexes 0 and 1 is any type pair in the given list. More...
 
LegalizeRuleSetlowerForCartesianProduct (std::initializer_list< LLT > Types0, std::initializer_list< LLT > Types1)
 The instruction is lowered when type indexes 0 and 1 are both in their respective lists. More...
 
LegalizeRuleSetlowerForCartesianProduct (std::initializer_list< LLT > Types0, std::initializer_list< LLT > Types1, std::initializer_list< LLT > Types2)
 The instruction is lowered when when type indexes 0, 1, and 2 are all in their respective lists. More...
 
LegalizeRuleSetlibcallIf (LegalityPredicate Predicate)
 Like legalIf, but for the Libcall action. More...
 
LegalizeRuleSetlibcallFor (std::initializer_list< LLT > Types)
 
LegalizeRuleSetlibcallFor (std::initializer_list< std::pair< LLT, LLT >> Types)
 
LegalizeRuleSetlibcallForCartesianProduct (std::initializer_list< LLT > Types)
 
LegalizeRuleSetlibcallForCartesianProduct (std::initializer_list< LLT > Types0, std::initializer_list< LLT > Types1)
 
LegalizeRuleSetwidenScalarIf (LegalityPredicate Predicate, LegalizeMutation Mutation)
 Widen the scalar to the one selected by the mutation if the predicate is true. More...
 
LegalizeRuleSetnarrowScalarIf (LegalityPredicate Predicate, LegalizeMutation Mutation)
 Narrow the scalar to the one selected by the mutation if the predicate is true. More...
 
LegalizeRuleSetmoreElementsIf (LegalityPredicate Predicate, LegalizeMutation Mutation)
 Add more elements to reach the type selected by the mutation if the predicate is true. More...
 
LegalizeRuleSetfewerElementsIf (LegalityPredicate Predicate, LegalizeMutation Mutation)
 Remove elements to reach the type selected by the mutation if the predicate is true. More...
 
LegalizeRuleSetunsupported ()
 The instruction is unsupported. More...
 
LegalizeRuleSetunsupportedIf (LegalityPredicate Predicate)
 
LegalizeRuleSetunsupportedIfMemSizeNotPow2 ()
 
LegalizeRuleSetcustomIf (LegalityPredicate Predicate)
 
LegalizeRuleSetcustomFor (std::initializer_list< LLT > Types)
 
LegalizeRuleSetcustomForCartesianProduct (std::initializer_list< LLT > Types)
 
LegalizeRuleSetcustomForCartesianProduct (std::initializer_list< LLT > Types0, std::initializer_list< LLT > Types1)
 
LegalizeRuleSetwidenScalarToNextPow2 (unsigned TypeIdx, unsigned MinSize=0)
 Widen the scalar to the next power of two that is at least MinSize. More...
 
LegalizeRuleSetnarrowScalar (unsigned TypeIdx, LegalizeMutation Mutation)
 
LegalizeRuleSetminScalar (unsigned TypeIdx, const LLT &Ty)
 Ensure the scalar is at least as wide as Ty. More...
 
LegalizeRuleSetmaxScalar (unsigned TypeIdx, const LLT &Ty)
 Ensure the scalar is at most as wide as Ty. More...
 
LegalizeRuleSetmaxScalarIf (LegalityPredicate Predicate, unsigned TypeIdx, const LLT &Ty)
 Conditionally limit the maximum size of the scalar. More...
 
LegalizeRuleSetclampScalar (unsigned TypeIdx, const LLT &MinTy, const LLT &MaxTy)
 Limit the range of scalar sizes to MinTy and MaxTy. More...
 
LegalizeRuleSetmoreElementsToNextPow2 (unsigned TypeIdx)
 Add more elements to the vector to reach the next power of two. More...
 
LegalizeRuleSetclampMinNumElements (unsigned TypeIdx, const LLT &EltTy, unsigned MinElements)
 Limit the number of elements in EltTy vectors to at least MinElements. More...
 
LegalizeRuleSetclampMaxNumElements (unsigned TypeIdx, const LLT &EltTy, unsigned MaxElements)
 Limit the number of elements in EltTy vectors to at most MaxElements. More...
 
LegalizeRuleSetclampNumElements (unsigned TypeIdx, const LLT &MinTy, const LLT &MaxTy)
 Limit the number of elements for the given vectors to at least MinTy's number of elements and at most MaxTy's number of elements. More...
 
LegalizeRuleSetfallback ()
 Fallback on the previous implementation. More...
 
bool verifyTypeIdxsCoverage (unsigned NumTypeIdxs) const
 Check if there is no type index which is obviously not handled by the LegalizeRuleSet in any way at all. More...
 
LegalizeActionStep apply (const LegalityQuery &Query) const
 Apply the ruleset to the given LegalityQuery. More...
 

Detailed Description

Definition at line 268 of file LegalizerInfo.h.

Constructor & Destructor Documentation

◆ LegalizeRuleSet()

llvm::LegalizeRuleSet::LegalizeRuleSet ( )
inline

Definition at line 392 of file LegalizerInfo.h.

Member Function Documentation

◆ aliasTo()

void llvm::LegalizeRuleSet::aliasTo ( unsigned  Opcode)
inline

◆ apply()

LegalizeActionStep LegalizeRuleSet::apply ( const LegalityQuery Query) const

◆ clampMaxNumElements()

LegalizeRuleSet& llvm::LegalizeRuleSet::clampMaxNumElements ( unsigned  TypeIdx,
const LLT EltTy,
unsigned  MaxElements 
)
inline

◆ clampMinNumElements()

LegalizeRuleSet& llvm::LegalizeRuleSet::clampMinNumElements ( unsigned  TypeIdx,
const LLT EltTy,
unsigned  MinElements 
)
inline

◆ clampNumElements()

LegalizeRuleSet& llvm::LegalizeRuleSet::clampNumElements ( unsigned  TypeIdx,
const LLT MinTy,
const LLT MaxTy 
)
inline

Limit the number of elements for the given vectors to at least MinTy's number of elements and at most MaxTy's number of elements.

No effect if the type is not a vector or does not have the same element type as the constraints. The element type of MinTy and MaxTy must match.

Definition at line 706 of file LegalizerInfo.h.

References assert(), llvm::LLT::getElementType(), and llvm::LLT::getNumElements().

◆ clampScalar()

LegalizeRuleSet& llvm::LegalizeRuleSet::clampScalar ( unsigned  TypeIdx,
const LLT MinTy,
const LLT MaxTy 
)
inline

Limit the range of scalar sizes to MinTy and MaxTy.

Definition at line 648 of file LegalizerInfo.h.

References assert(), and llvm::LLT::isScalar().

Referenced by llvm::X86LegalizerInfo::X86LegalizerInfo().

◆ customFor()

LegalizeRuleSet& llvm::LegalizeRuleSet::customFor ( std::initializer_list< LLT Types)
inline

Definition at line 587 of file LegalizerInfo.h.

References llvm::LegalizeActions::Custom.

◆ customForCartesianProduct() [1/2]

LegalizeRuleSet& llvm::LegalizeRuleSet::customForCartesianProduct ( std::initializer_list< LLT Types)
inline

Definition at line 590 of file LegalizerInfo.h.

References llvm::LegalizeActions::Custom.

◆ customForCartesianProduct() [2/2]

LegalizeRuleSet& llvm::LegalizeRuleSet::customForCartesianProduct ( std::initializer_list< LLT Types0,
std::initializer_list< LLT Types1 
)
inline

Definition at line 594 of file LegalizerInfo.h.

References llvm::LegalizeActions::Custom.

◆ customIf()

LegalizeRuleSet& llvm::LegalizeRuleSet::customIf ( LegalityPredicate  Predicate)
inline

Definition at line 581 of file LegalizerInfo.h.

References llvm::LegalizeActions::Custom.

◆ fallback()

LegalizeRuleSet& llvm::LegalizeRuleSet::fallback ( )
inline

Fallback on the previous implementation.

This should only be used while porting a rule.

Definition at line 718 of file LegalizerInfo.h.

References llvm::ARM_AM::add, llvm::cl::apply(), Query(), and llvm::LegalizeActions::UseLegacyRules.

◆ fewerElementsIf()

LegalizeRuleSet& llvm::LegalizeRuleSet::fewerElementsIf ( LegalityPredicate  Predicate,
LegalizeMutation  Mutation 
)
inline

Remove elements to reach the type selected by the mutation if the predicate is true.

Definition at line 561 of file LegalizerInfo.h.

References llvm::LegalizeActions::FewerElements.

◆ getAlias()

unsigned llvm::LegalizeRuleSet::getAlias ( ) const
inline

Definition at line 402 of file LegalizerInfo.h.

◆ isAliasedByAnother()

bool llvm::LegalizeRuleSet::isAliasedByAnother ( )
inline

Definition at line 394 of file LegalizerInfo.h.

◆ legalFor() [1/2]

LegalizeRuleSet& llvm::LegalizeRuleSet::legalFor ( std::initializer_list< LLT Types)
inline

The instruction is legal when type index 0 is any type in the given list.

Definition at line 412 of file LegalizerInfo.h.

References llvm::LegalizeActions::Legal.

Referenced by llvm::MipsLegalizerInfo::MipsLegalizerInfo(), and llvm::X86LegalizerInfo::X86LegalizerInfo().

◆ legalFor() [2/2]

LegalizeRuleSet& llvm::LegalizeRuleSet::legalFor ( std::initializer_list< std::pair< LLT, LLT >>  Types)
inline

The instruction is legal when type indexes 0 and 1 is any type pair in the given list.

Definition at line 417 of file LegalizerInfo.h.

References llvm::LegalizeActions::Legal.

◆ legalForCartesianProduct() [1/2]

LegalizeRuleSet& llvm::LegalizeRuleSet::legalForCartesianProduct ( std::initializer_list< LLT Types)
inline

The instruction is legal when type indexes 0 and 1 are both in the given list.

That is, the type pair is in the cartesian product of the list.

Definition at line 431 of file LegalizerInfo.h.

References llvm::LegalizeActions::Legal.

Referenced by llvm::X86LegalizerInfo::X86LegalizerInfo().

◆ legalForCartesianProduct() [2/2]

LegalizeRuleSet& llvm::LegalizeRuleSet::legalForCartesianProduct ( std::initializer_list< LLT Types0,
std::initializer_list< LLT Types1 
)
inline

The instruction is legal when type indexes 0 and 1 are both their respective lists.

Definition at line 436 of file LegalizerInfo.h.

References llvm::LegalizeActions::Legal.

◆ legalForTypesWithMemSize()

LegalizeRuleSet& llvm::LegalizeRuleSet::legalForTypesWithMemSize ( std::initializer_list< LegalityPredicates::TypePairAndMemSize TypesAndMemSize)
inline

The instruction is legal when type indexes 0 and 1 along with the memory size is any type and size tuple in the given list.

Definition at line 422 of file LegalizerInfo.h.

References llvm::LegalizeActions::Legal, and llvm::LegalityPredicates::typePairAndMemSizeInSet().

◆ legalIf()

LegalizeRuleSet& llvm::LegalizeRuleSet::legalIf ( LegalityPredicate  Predicate)
inline

The instruction is legal if predicate is true.

Definition at line 405 of file LegalizerInfo.h.

References llvm::LegalizeActions::Legal.

◆ libcallFor() [1/2]

LegalizeRuleSet& llvm::LegalizeRuleSet::libcallFor ( std::initializer_list< LLT Types)
inline

Definition at line 514 of file LegalizerInfo.h.

References llvm::LegalizeActions::Libcall.

◆ libcallFor() [2/2]

LegalizeRuleSet& llvm::LegalizeRuleSet::libcallFor ( std::initializer_list< std::pair< LLT, LLT >>  Types)
inline

Definition at line 518 of file LegalizerInfo.h.

References llvm::LegalizeActions::Libcall.

◆ libcallForCartesianProduct() [1/2]

LegalizeRuleSet& llvm::LegalizeRuleSet::libcallForCartesianProduct ( std::initializer_list< LLT Types)
inline

Definition at line 522 of file LegalizerInfo.h.

References llvm::LegalizeActions::Libcall.

◆ libcallForCartesianProduct() [2/2]

LegalizeRuleSet& llvm::LegalizeRuleSet::libcallForCartesianProduct ( std::initializer_list< LLT Types0,
std::initializer_list< LLT Types1 
)
inline

Definition at line 526 of file LegalizerInfo.h.

References llvm::LegalizeActions::Libcall.

◆ libcallIf()

LegalizeRuleSet& llvm::LegalizeRuleSet::libcallIf ( LegalityPredicate  Predicate)
inline

Like legalIf, but for the Libcall action.

Definition at line 508 of file LegalizerInfo.h.

References llvm::LegalizeActions::Libcall.

◆ lower()

LegalizeRuleSet& llvm::LegalizeRuleSet::lower ( )
inline

The instruction is lowered.

Definition at line 442 of file LegalizerInfo.h.

References llvm::Lower.

◆ lowerFor() [1/4]

LegalizeRuleSet& llvm::LegalizeRuleSet::lowerFor ( std::initializer_list< LLT Types)
inline

The instruction is lowered when type index 0 is any type in the given list.

Keep type index 0 as the same type.

Definition at line 468 of file LegalizerInfo.h.

References llvm::LegalizeMutations::changeTo(), and llvm::Lower.

◆ lowerFor() [2/4]

LegalizeRuleSet& llvm::LegalizeRuleSet::lowerFor ( std::initializer_list< LLT Types,
LegalizeMutation  Mutation 
)
inline

The instruction is lowered when type index 0 is any type in the given list.

Definition at line 474 of file LegalizerInfo.h.

References llvm::Lower.

◆ lowerFor() [3/4]

LegalizeRuleSet& llvm::LegalizeRuleSet::lowerFor ( std::initializer_list< std::pair< LLT, LLT >>  Types)
inline

The instruction is lowered when type indexes 0 and 1 is any type pair in the given list.

Keep type index 0 as the same type.

Definition at line 480 of file LegalizerInfo.h.

References llvm::LegalizeMutations::changeTo(), and llvm::Lower.

◆ lowerFor() [4/4]

LegalizeRuleSet& llvm::LegalizeRuleSet::lowerFor ( std::initializer_list< std::pair< LLT, LLT >>  Types,
LegalizeMutation  Mutation 
)
inline

The instruction is lowered when type indexes 0 and 1 is any type pair in the given list.

Definition at line 486 of file LegalizerInfo.h.

References llvm::Lower.

◆ lowerForCartesianProduct() [1/2]

LegalizeRuleSet& llvm::LegalizeRuleSet::lowerForCartesianProduct ( std::initializer_list< LLT Types0,
std::initializer_list< LLT Types1 
)
inline

The instruction is lowered when type indexes 0 and 1 are both in their respective lists.

Definition at line 492 of file LegalizerInfo.h.

References llvm::Lower.

◆ lowerForCartesianProduct() [2/2]

LegalizeRuleSet& llvm::LegalizeRuleSet::lowerForCartesianProduct ( std::initializer_list< LLT Types0,
std::initializer_list< LLT Types1,
std::initializer_list< LLT Types2 
)
inline

The instruction is lowered when when type indexes 0, 1, and 2 are all in their respective lists.

Definition at line 499 of file LegalizerInfo.h.

References llvm::Lower.

◆ lowerIf() [1/2]

LegalizeRuleSet& llvm::LegalizeRuleSet::lowerIf ( LegalityPredicate  Predicate)
inline

The instruction is lowered if predicate is true.

Keep type index 0 as the same type.

Definition at line 451 of file LegalizerInfo.h.

References llvm::Lower.

◆ lowerIf() [2/2]

LegalizeRuleSet& llvm::LegalizeRuleSet::lowerIf ( LegalityPredicate  Predicate,
LegalizeMutation  Mutation 
)
inline

The instruction is lowered if predicate is true.

Definition at line 459 of file LegalizerInfo.h.

References llvm::Lower.

◆ maxScalar()

LegalizeRuleSet& llvm::LegalizeRuleSet::maxScalar ( unsigned  TypeIdx,
const LLT Ty 
)
inline

◆ maxScalarIf()

LegalizeRuleSet& llvm::LegalizeRuleSet::maxScalarIf ( LegalityPredicate  Predicate,
unsigned  TypeIdx,
const LLT Ty 
)
inline

Conditionally limit the maximum size of the scalar.

For example, when the maximum size of one type depends on the size of another such as extracting N bits from an M bit container.

Definition at line 635 of file LegalizerInfo.h.

References llvm::LegalizeMutations::changeTo(), llvm::LLT::getSizeInBits(), llvm::LegalizeActions::NarrowScalar, Query(), and llvm::LegalityPredicates::widerThan().

◆ minScalar()

LegalizeRuleSet& llvm::LegalizeRuleSet::minScalar ( unsigned  TypeIdx,
const LLT Ty 
)
inline

◆ moreElementsIf()

LegalizeRuleSet& llvm::LegalizeRuleSet::moreElementsIf ( LegalityPredicate  Predicate,
LegalizeMutation  Mutation 
)
inline

Add more elements to reach the type selected by the mutation if the predicate is true.

Definition at line 552 of file LegalizerInfo.h.

References llvm::LegalizeActions::MoreElements.

◆ moreElementsToNextPow2()

LegalizeRuleSet& llvm::LegalizeRuleSet::moreElementsToNextPow2 ( unsigned  TypeIdx)
inline

Add more elements to the vector to reach the next power of two.

No effect if the type is not a vector or the element count is a power of two.

Definition at line 657 of file LegalizerInfo.h.

References llvm::LegalizeActions::MoreElements, llvm::LegalizeMutations::moreElementsToNextPow2(), and llvm::LegalityPredicates::numElementsNotPow2().

◆ narrowScalar()

LegalizeRuleSet& llvm::LegalizeRuleSet::narrowScalar ( unsigned  TypeIdx,
LegalizeMutation  Mutation 
)
inline

◆ narrowScalarIf()

LegalizeRuleSet& llvm::LegalizeRuleSet::narrowScalarIf ( LegalityPredicate  Predicate,
LegalizeMutation  Mutation 
)
inline

Narrow the scalar to the one selected by the mutation if the predicate is true.

Definition at line 542 of file LegalizerInfo.h.

References llvm::LegalizeActions::NarrowScalar.

◆ setIsAliasedByAnother()

void llvm::LegalizeRuleSet::setIsAliasedByAnother ( )
inline

Definition at line 395 of file LegalizerInfo.h.

◆ unsupported()

LegalizeRuleSet& llvm::LegalizeRuleSet::unsupported ( )
inline

The instruction is unsupported.

Definition at line 570 of file LegalizerInfo.h.

References llvm::LegalizeActions::Unsupported.

◆ unsupportedIf()

LegalizeRuleSet& llvm::LegalizeRuleSet::unsupportedIf ( LegalityPredicate  Predicate)
inline

Definition at line 573 of file LegalizerInfo.h.

References llvm::LegalizeActions::Unsupported.

◆ unsupportedIfMemSizeNotPow2()

LegalizeRuleSet& llvm::LegalizeRuleSet::unsupportedIfMemSizeNotPow2 ( )
inline

◆ verifyTypeIdxsCoverage()

bool LegalizeRuleSet::verifyTypeIdxsCoverage ( unsigned  NumTypeIdxs) const

Check if there is no type index which is obviously not handled by the LegalizeRuleSet in any way at all.

Precondition
Type indices of the opcode form a dense [0, NumTypeIdxs) set.

Definition at line 87 of file LegalizerInfo.cpp.

References llvm::dbgs(), and LLVM_DEBUG.

Referenced by llvm::LegalizerInfo::verify().

◆ widenScalarIf()

LegalizeRuleSet& llvm::LegalizeRuleSet::widenScalarIf ( LegalityPredicate  Predicate,
LegalizeMutation  Mutation 
)
inline

Widen the scalar to the one selected by the mutation if the predicate is true.

Definition at line 533 of file LegalizerInfo.h.

References llvm::LegalizeActions::WidenScalar.

◆ widenScalarToNextPow2()

LegalizeRuleSet& llvm::LegalizeRuleSet::widenScalarToNextPow2 ( unsigned  TypeIdx,
unsigned  MinSize = 0 
)
inline

Widen the scalar to the next power of two that is at least MinSize.

No effect if the type is not a scalar or is a power of two.

Definition at line 601 of file LegalizerInfo.h.

References llvm::LegalityPredicates::sizeNotPow2(), llvm::LegalizeActions::WidenScalar, and llvm::LegalizeMutations::widenScalarToNextPow2().

Referenced by llvm::X86LegalizerInfo::X86LegalizerInfo().


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