This contains information for each constraint that we are lowering. More...
#include "llvm/CodeGen/TargetLowering.h"
Public Member Functions | |
| AsmOperandInfo (InlineAsm::ConstraintInfo Info) | |
| Copy constructor for copying from a ConstraintInfo. More... | |
| bool | isMatchingInputConstraint () const |
| Return true of this is an input operand that is a matching constraint like "4". More... | |
| unsigned | getMatchedOperand () const |
| If this is an input matching constraint, this method returns the output operand it matches. More... | |
 Public Member Functions inherited from llvm::InlineAsm::ConstraintInfo | |
| bool | hasMatchingInput () const |
| hasMatchingInput - Return true if this is an output constraint that has a matching input constraint. More... | |
| ConstraintInfo ()=default | |
| Default constructor. More... | |
| bool | Parse (StringRef Str, ConstraintInfoVector &ConstraintsSoFar) |
| Parse - Analyze the specified string (e.g. More... | |
| void | selectAlternative (unsigned index) |
| selectAlternative - Point this constraint to the alternative constraint indicated by the index. More... | |
Public Attributes | |
| std::string | ConstraintCode |
| This contains the actual string for the code, like "m". More... | |
| TargetLowering::ConstraintType | ConstraintType = TargetLowering::C_Unknown |
| Information about the constraint code, e.g. More... | |
| Value * | CallOperandVal = nullptr |
| If this is the result output operand or a clobber, this is null, otherwise it is the incoming operand to the CallInst. More... | |
| MVT | ConstraintVT = MVT::Other |
| The ValueType for the operand value. More... | |
| Public Attributes inherited from llvm::InlineAsm::ConstraintInfo | |
| ConstraintPrefix | Type = isInput |
| Type - The basic type of the constraint: input/output/clobber. More... | |
| bool | isEarlyClobber = false |
| isEarlyClobber - "&": output operand writes result before inputs are all read. More... | |
| int | MatchingInput = -1 |
| MatchingInput - If this is not -1, this is an output constraint where an input constraint is required to match it (e.g. More... | |
| bool | isCommutative = false |
| isCommutative - This is set to true for a constraint that is commutative with the next operand. More... | |
| bool | isIndirect = false |
| isIndirect - True if this operand is an indirect operand. More... | |
| ConstraintCodeVector | Codes |
| Code - The constraint code, either the register name (in braces) or the constraint letter/number. More... | |
| bool | isMultipleAlternative = false |
| isMultipleAlternative - '|': has multiple-alternative constraints. More... | |
| SubConstraintInfoVector | multipleAlternatives |
| multipleAlternatives - If there are multiple alternative constraints, this array will contain them. More... | |
| unsigned | currentAlternativeIndex = 0 |
| The currently selected alternative constraint index. More... | |
Detailed Description
This contains information for each constraint that we are lowering.
Definition at line 3547 of file TargetLowering.h.
Constructor & Destructor Documentation
◆ AsmOperandInfo()
|
inline |
Copy constructor for copying from a ConstraintInfo.
Definition at line 3566 of file TargetLowering.h.
Member Function Documentation
◆ getMatchedOperand()
| unsigned TargetLowering::AsmOperandInfo::getMatchedOperand | ( | ) | const |
If this is an input matching constraint, this method returns the output operand it matches.
Definition at line 3303 of file TargetLowering.cpp.
References assert().
◆ isMatchingInputConstraint()
| bool TargetLowering::AsmOperandInfo::isMatchingInputConstraint | ( | ) | const |
Return true of this is an input operand that is a matching constraint like "4".
Definition at line 3296 of file TargetLowering.cpp.
References assert().
Member Data Documentation
◆ CallOperandVal
| Value* llvm::TargetLowering::AsmOperandInfo::CallOperandVal = nullptr |
If this is the result output operand or a clobber, this is null, otherwise it is the incoming operand to the CallInst.
This gets modified as the asm is processed.
Definition at line 3560 of file TargetLowering.h.
Referenced by llvm::TargetLowering::ComputeConstraintToUse(), llvm::SparcTargetLowering::getSingleConstraintMatchWeight(), llvm::LanaiTargetLowering::getSingleConstraintMatchWeight(), llvm::AVRTargetLowering::getSingleConstraintMatchWeight(), llvm::ARMTargetLowering::getSingleConstraintMatchWeight(), llvm::SystemZTargetLowering::getSingleConstraintMatchWeight(), llvm::PPCTargetLowering::getSingleConstraintMatchWeight(), llvm::X86TargetLowering::getSingleConstraintMatchWeight(), llvm::TargetLowering::getSingleConstraintMatchWeight(), IsOperandAMemoryOperand(), and llvm::TargetLowering::ParseConstraints().
◆ ConstraintCode
| std::string llvm::TargetLowering::AsmOperandInfo::ConstraintCode |
This contains the actual string for the code, like "m".
TargetLowering picks the 'best' code from ConstraintInfo::Codes that most closely matches the operand.
Definition at line 3551 of file TargetLowering.h.
Referenced by ChooseConstraint(), llvm::TargetLowering::ComputeConstraintToUse(), and llvm::TargetLowering::ParseConstraints().
◆ ConstraintType
| TargetLowering::ConstraintType llvm::TargetLowering::AsmOperandInfo::ConstraintType = TargetLowering::C_Unknown |
Information about the constraint code, e.g.
Register, RegisterClass, Memory, Other, Unknown.
Definition at line 3555 of file TargetLowering.h.
Referenced by ChooseConstraint(), llvm::TargetLowering::ComputeConstraintToUse(), findMatchingInlineAsmOperand(), IsNonLocalValue(), and IsOperandAMemoryOperand().
◆ ConstraintVT
| MVT llvm::TargetLowering::AsmOperandInfo::ConstraintVT = MVT::Other |
The ValueType for the operand value.
Definition at line 3563 of file TargetLowering.h.
Referenced by llvm::TargetLowering::ComputeConstraintToUse(), and llvm::TargetLowering::ParseConstraints().
The documentation for this struct was generated from the following files:
- include/llvm/CodeGen/TargetLowering.h
- lib/CodeGen/SelectionDAG/TargetLowering.cpp
