llvm::TypeTestResolution Struct Reference

#include "llvm/IR/ModuleSummaryIndex.h"

Public Types
enum	Kind {   Unsat , ByteArray , Inline , Single ,   AllOnes , Unknown }
	Specifies which kind of type check we should emit for this byte array. More...

Public Attributes
enum llvm::TypeTestResolution::Kind	TheKind = Unknown
unsigned	SizeM1BitWidth = 0
	Range of size-1 expressed as a bit width.
uint64_t	AlignLog2 = 0
uint64_t	SizeM1 = 0
uint8_t	BitMask = 0
uint64_t	InlineBits = 0

Detailed Description

Definition at line 1216 of file ModuleSummaryIndex.h.

Member Enumeration Documentation

Kind

enum llvm::TypeTestResolution::Kind

Specifies which kind of type check we should emit for this byte array.

See http://clang.llvm.org/docs/ControlFlowIntegrityDesign.html for full details on each kind of check; the enumerators are described with reference to that document.

Enumerator
Unsat	Unsatisfiable type (i.e. no global has this type metadata)
ByteArray	Test a byte array (first example)
Inline	Inlined bit vector ("Short Inline Bit Vectors")
Single	Single element (last example in "Short Inline Bit Vectors")
AllOnes	All-ones bit vector ("Eliminating Bit Vector Checks for All-Ones Bit Vectors")
Unknown	Unknown (analysis not performed, don't lower)

Definition at line 1221 of file ModuleSummaryIndex.h.

Member Data Documentation

AlignLog2

uint64_t llvm::TypeTestResolution::AlignLog2 = 0

Definition at line 1241 of file ModuleSummaryIndex.h.

Referenced by llvm::yaml::MappingTraits< TypeTestResolution >::mapping(), and parseTypeIdSummaryRecord().

BitMask

uint8_t llvm::TypeTestResolution::BitMask = 0

Definition at line 1243 of file ModuleSummaryIndex.h.

Referenced by llvm::yaml::MappingTraits< TypeTestResolution >::mapping(), and parseTypeIdSummaryRecord().

InlineBits

uint64_t llvm::TypeTestResolution::InlineBits = 0

Definition at line 1244 of file ModuleSummaryIndex.h.

Referenced by llvm::yaml::MappingTraits< TypeTestResolution >::mapping(), and parseTypeIdSummaryRecord().

SizeM1

uint64_t llvm::TypeTestResolution::SizeM1 = 0

Definition at line 1242 of file ModuleSummaryIndex.h.

Referenced by llvm::yaml::MappingTraits< TypeTestResolution >::mapping(), and parseTypeIdSummaryRecord().

SizeM1BitWidth

unsigned llvm::TypeTestResolution::SizeM1BitWidth = 0

Range of size-1 expressed as a bit width.

For example, if the size is in range [1,256], this number will be 8. This helps generate the most compact instruction sequences.

Definition at line 1234 of file ModuleSummaryIndex.h.

Referenced by llvm::yaml::MappingTraits< TypeTestResolution >::mapping(), and parseTypeIdSummaryRecord().

TheKind

enum llvm::TypeTestResolution::Kind llvm::TypeTestResolution::TheKind = Unknown

Referenced by llvm::yaml::MappingTraits< TypeTestResolution >::mapping(), and parseTypeIdSummaryRecord().

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

• include/llvm/IR/ModuleSummaryIndex.h