ir_instr* ir_block_create_phi(ir_block*, lex_ctx, const char *label, int vtype);
ir_value* ir_phi_value(ir_instr*);
void ir_phi_add(ir_instr*, ir_block *b, ir_value *v);
ir_instr* ir_block_create_phi(ir_block*, lex_ctx, const char *label, int vtype);
ir_value* ir_phi_value(ir_instr*);
void ir_phi_add(ir_instr*, ir_block *b, ir_value *v);