public WasmOpcodeExecutor Visit(SelectOpcode opcode, WasmFunctionState state)
{
var condition = state.PopUI32();
switch (state.PeekType())
{
case WasmType.I32:
var i32right = state.PopUI32();
var i32left = state.PopUI32();
state.PushUI32(condition != 0 ? i32left : i32right);
break;
case WasmType.I64:
var i64right = state.PopUI64();
var i64left = state.PopUI64();
state.PushUI64(condition != 0 ? i64left : i64right);
break;
case WasmType.F32:
var f32right = state.PopF32();
var f32left = state.PopF32();
state.PushF32(condition != 0 ? f32left : f32right);
break;
case WasmType.F64:
var f64right = state.PopF64();
var f64left = state.PopF64();
state.PushF64(condition != 0 ? f64left : f64right);
break;
default:
throw new InvalidOperationException($"cannot select from {state.PeekType()} values");
}
return(this);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(SelectOpcode opcode, WasmNodeArg arg)
{
var condition = arg.Pop();
var second = arg.Pop();
var first = arg.Pop();
arg.Push(new SelectNode(condition, first, second));
return(null);
}
WasmMSILResult IWasmOpcodeVisitor <WasmMSILArg, WasmMSILResult> .Visit(SelectOpcode opcode, WasmMSILArg arg) => throw new NotImplementedException();
