#include "llvm/IR/InlineAsm.h"
Public Member Functions | |
| bool | hasMatchingInput () const |
| hasMatchingInput - Return true if this is an output constraint that has a matching input constraint. | |
| ConstraintInfo ()=default | |
| Default constructor. | |
| bool | Parse (StringRef Str, ConstraintInfoVector &ConstraintsSoFar) |
| Parse - Analyze the specified string (e.g. | |
| void | selectAlternative (unsigned index) |
| selectAlternative - Point this constraint to the alternative constraint indicated by the index. | |
| bool | hasArg () const |
| Whether this constraint corresponds to an argument. | |
Public Attributes | |
| ConstraintPrefix | Type = isInput |
| Type - The basic type of the constraint: input/output/clobber/label. | |
| bool | isEarlyClobber = false |
| isEarlyClobber - "&": output operand writes result before inputs are all read. | |
| 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. | |
| bool | isCommutative = false |
| isCommutative - This is set to true for a constraint that is commutative with the next operand. | |
| bool | isIndirect = false |
| isIndirect - True if this operand is an indirect operand. | |
| ConstraintCodeVector | Codes |
| Code - The constraint code, either the register name (in braces) or the constraint letter/number. | |
| bool | isMultipleAlternative = false |
| isMultipleAlternative - '|': has multiple-alternative constraints. | |
| SubConstraintInfoVector | multipleAlternatives |
| multipleAlternatives - If there are multiple alternative constraints, this array will contain them. | |
| unsigned | currentAlternativeIndex = 0 |
| The currently selected alternative constraint index. | |
Detailed Description
Definition at line 123 of file InlineAsm.h.
Constructor & Destructor Documentation
◆ ConstraintInfo()
|
default |
Default constructor.
Member Function Documentation
◆ hasArg()
|
inline |
Whether this constraint corresponds to an argument.
Definition at line 179 of file InlineAsm.h.
References isIndirect, llvm::InlineAsm::isInput, and llvm::InlineAsm::isOutput.
◆ hasMatchingInput()
|
inline |
hasMatchingInput - Return true if this is an output constraint that has a matching input constraint.
Definition at line 140 of file InlineAsm.h.
References MatchingInput.
Referenced by llvm::TargetLowering::getConstraintPreferences(), Parse(), and llvm::TargetLowering::ParseConstraints().
◆ Parse()
| bool InlineAsm::ConstraintInfo::Parse | ( | StringRef | Str, |
| InlineAsm::ConstraintInfoVector & | ConstraintsSoFar | ||
| ) |
Parse - Analyze the specified string (e.g.
"=*&{eax}") and fill in the fields in this structure. If the constraint string is not understood, return true, otherwise return false.
"==&{eax}") and fill in the fields in this structure. If the constraint string is not understood, return true, otherwise return false.
Definition at line 78 of file InlineAsm.cpp.
References assert(), llvm::CallingConv::C, Codes, currentAlternativeIndex, hasMatchingInput(), I, llvm::InlineAsm::isClobber, isCommutative, isEarlyClobber, isIndirect, llvm::InlineAsm::isInput, llvm::InlineAsm::isLabel, isMultipleAlternative, llvm::InlineAsm::isOutput, llvm::InlineAsm::SubConstraintInfo::MatchingInput, MatchingInput, multipleAlternatives, and N.
◆ selectAlternative()
| void InlineAsm::ConstraintInfo::selectAlternative | ( | unsigned | index | ) |
selectAlternative - Point this constraint to the alternative constraint indicated by the index.
Definition at line 224 of file InlineAsm.cpp.
References llvm::InlineAsm::SubConstraintInfo::Codes, and llvm::InlineAsm::SubConstraintInfo::MatchingInput.
Member Data Documentation
◆ Codes
| ConstraintCodeVector llvm::InlineAsm::ConstraintInfo::Codes |
Code - The constraint code, either the register name (in braces) or the constraint letter/number.
Definition at line 154 of file InlineAsm.h.
Referenced by llvm::TargetLowering::ComputeConstraintToUse(), computeConstraintToUse(), llvm::TargetLowering::getConstraintPreferences(), and Parse().
◆ currentAlternativeIndex
| unsigned llvm::InlineAsm::ConstraintInfo::currentAlternativeIndex = 0 |
The currently selected alternative constraint index.
Definition at line 164 of file InlineAsm.h.
Referenced by Parse().
◆ isCommutative
| bool llvm::InlineAsm::ConstraintInfo::isCommutative = false |
isCommutative - This is set to true for a constraint that is commutative with the next operand.
Definition at line 144 of file InlineAsm.h.
Referenced by Parse().
◆ isEarlyClobber
| bool llvm::InlineAsm::ConstraintInfo::isEarlyClobber = false |
isEarlyClobber - "&": output operand writes result before inputs are all read.
This is only ever set for an output operand.
Definition at line 130 of file InlineAsm.h.
Referenced by llvm::InlineAsmLowering::lowerInlineAsm(), and Parse().
◆ isIndirect
| bool llvm::InlineAsm::ConstraintInfo::isIndirect = false |
isIndirect - True if this operand is an indirect operand.
This means that the address of the source or destination is present in the call instruction, instead of it being returned or passed in explicitly. This is represented with a '*' in the asm string.
Definition at line 150 of file InlineAsm.h.
Referenced by llvm::TargetLowering::getConstraintPreferences(), hasArg(), llvm::InlineAsmLowering::lowerInlineAsm(), Parse(), and llvm::TargetLowering::ParseConstraints().
◆ isMultipleAlternative
| bool llvm::InlineAsm::ConstraintInfo::isMultipleAlternative = false |
isMultipleAlternative - '|': has multiple-alternative constraints.
Definition at line 157 of file InlineAsm.h.
Referenced by Parse().
◆ MatchingInput
| int llvm::InlineAsm::ConstraintInfo::MatchingInput = -1 |
MatchingInput - If this is not -1, this is an output constraint where an input constraint is required to match it (e.g.
"0"). The value is the constraint number that matches this one (for example, if this is constraint #0 and constraint #4 has the value "0", this will be 4).
Definition at line 136 of file InlineAsm.h.
Referenced by hasMatchingInput(), Parse(), and llvm::TargetLowering::ParseConstraints().
◆ multipleAlternatives
| SubConstraintInfoVector llvm::InlineAsm::ConstraintInfo::multipleAlternatives |
multipleAlternatives - If there are multiple alternative constraints, this array will contain them.
Otherwise it will be empty.
Definition at line 161 of file InlineAsm.h.
Referenced by Parse(), and llvm::TargetLowering::ParseConstraints().
◆ Type
| ConstraintPrefix llvm::InlineAsm::ConstraintInfo::Type = isInput |
Type - The basic type of the constraint: input/output/clobber/label.
Definition at line 126 of file InlineAsm.h.
Referenced by llvm::InlineAsmLowering::lowerInlineAsm(), and llvm::TargetLowering::ParseConstraints().
The documentation for this struct was generated from the following files:
- include/llvm/IR/InlineAsm.h
- lib/IR/InlineAsm.cpp
