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... | |
| bool | hasArg () const |
| Whether this constraint corresponds to an argument. 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/label. 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 4522 of file TargetLowering.h.
Constructor & Destructor Documentation
◆ AsmOperandInfo()
|
inline |
Copy constructor for copying from a ConstraintInfo.
Definition at line 4541 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 5317 of file TargetLowering.cpp.
References assert().
Referenced by llvm::InlineAsmLowering::lowerInlineAsm().
◆ isMatchingInputConstraint()
| bool TargetLowering::AsmOperandInfo::isMatchingInputConstraint | ( | ) | const |
Return true of this is an input operand that is a matching constraint like "4".
Definition at line 5310 of file TargetLowering.cpp.
References assert().
Referenced by llvm::InlineAsmLowering::lowerInlineAsm().
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 4535 of file TargetLowering.h.
Referenced by computeConstraintToUse(), llvm::TargetLowering::ComputeConstraintToUse(), llvm::InlineAsmLowering::lowerInlineAsm(), 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 4526 of file TargetLowering.h.
Referenced by chooseConstraint(), ChooseConstraint(), computeConstraintToUse(), llvm::TargetLowering::ComputeConstraintToUse(), llvm::X86TargetLowering::LowerAsmOutputForConstraint(), llvm::InlineAsmLowering::lowerInlineAsm(), 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 4530 of file TargetLowering.h.
Referenced by chooseConstraint(), ChooseConstraint(), computeConstraintToUse(), llvm::TargetLowering::ComputeConstraintToUse(), and llvm::InlineAsmLowering::lowerInlineAsm().
◆ ConstraintVT
| MVT llvm::TargetLowering::AsmOperandInfo::ConstraintVT = MVT::Other |
The ValueType for the operand value.
Definition at line 4538 of file TargetLowering.h.
Referenced by computeConstraintToUse(), llvm::TargetLowering::ComputeConstraintToUse(), llvm::X86TargetLowering::LowerAsmOutputForConstraint(), 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
