ExtraInstrArgs

Controls behavior of emitInstr functions

struct ExtraInstrArgs {

IrOpcode opcode;

IrArgSize argSize;

bool addUsers;

bool hasResult;

ubyte extraArgSlots;

IrIndex result;

IrIndex type;

}

Members

Variables

addUsers bool addUsers;: When true newly created instruction is added as a user of each argument
argSize IrArgSize argSize;: Always gets copied into InstrHeader.argSize
cond ubyte cond;: Gets copied into InstrHeader.cond when IrInstrFlags.hasCondition is set
extraArgSlots ubyte extraArgSlots;: Will be added to the number of allocated argument slots and to number of arguments
hasResult bool hasResult;: Is checked when instruction has variadic result (IrInstrFlags.hasVariadicResult) If hasResult is false, no result is allocated and result value is ignored If hasResult is true, then result is checked: If result is defined: then instrHeader.result is set to its value or else a new virtual register is created
opcode IrOpcode opcode;: Gets copied into InstrHeader.op when IrInstrFlags.isGeneric is set
result IrIndex result;: If instruction has variadic result, see docs on 'hasResult' If instruction always has result, then 'result' is used when defined when not defined, new virtual register is created If instruction always has no result, 'result' value is ignored
type IrIndex type;: When instruction has virtual regiter as result, result.type is set to 'type' Not set if 'result' is present

Meta

Source

See Implementation

vox ir ir_builder structs