use crate::cursor::{Cursor, FuncCursor};
use crate::flowgraph::ControlFlowGraph;
use crate::ir::{self, InstBuilder};
use crate::isa::TargetIsa;
pub fn expand_call(
inst: ir::Inst,
func: &mut ir::Function,
_cfg: &mut ControlFlowGraph,
isa: &dyn TargetIsa,
) {
let (func_ref, old_args) = match func.dfg[inst] {
ir::InstructionData::Call {
opcode,
ref args,
func_ref,
} => {
debug_assert_eq!(opcode, ir::Opcode::Call);
(func_ref, args.clone())
}
_ => panic!("Wanted call: {}", func.dfg.display_inst(inst, None)),
};
let ptr_ty = isa.pointer_type();
let sig = func.dfg.ext_funcs[func_ref].signature;
let callee = {
let mut pos = FuncCursor::new(func).at_inst(inst);
pos.use_srcloc(inst);
pos.ins().func_addr(ptr_ty, func_ref)
};
let mut new_args = ir::ValueList::default();
new_args.push(callee, &mut func.dfg.value_lists);
for i in 0..old_args.len(&func.dfg.value_lists) {
new_args.push(
old_args.as_slice(&func.dfg.value_lists)[i],
&mut func.dfg.value_lists,
);
}
func.dfg
.replace(inst)
.CallIndirect(ir::Opcode::CallIndirect, ptr_ty, sig, new_args);
}