static void arm_generate_code(FILE *output, const char *cup_name)
{
be_gas_emit_types = false;
be_gas_elf_type_char = '%';
be_begin(output, cup_name);
unsigned *const sp_is_non_ssa = rbitset_alloca(N_ARM_REGISTERS);
rbitset_set(sp_is_non_ssa, REG_SP);
arm_emit_file_prologue();
foreach_irp_irg(i, irg) {
if (!be_step_first(irg))
continue;
struct obstack *obst = be_get_be_obst(irg);
be_birg_from_irg(irg)->isa_link = OALLOCZ(obst, arm_irg_data_t);
be_birg_from_irg(irg)->non_ssa_regs = sp_is_non_ssa;
arm_select_instructions(irg);
be_step_schedule(irg);
be_timer_push(T_RA_PREPARATION);
be_sched_fix_flags(irg, &arm_reg_classes[CLASS_arm_flags], NULL, NULL, NULL);
be_timer_pop(T_RA_PREPARATION);
be_step_regalloc(irg, &arm_regalloc_if);
be_timer_push(T_EMIT);
arm_finish_graph(irg);
arm_emit_function(irg);
be_timer_pop(T_EMIT);
be_step_last(irg);
}
be_finish();
}
/**
* Transforms the standard Firm graph into an ARM firm graph.
*/
static void arm_select_instructions(ir_graph *irg)
{
/* transform nodes into assembler instructions */
be_timer_push(T_CODEGEN);
arm_transform_graph(irg);
be_timer_pop(T_CODEGEN);
be_dump(DUMP_BE, irg, "code-selection");
/* do local optimizations (mainly CSE) */
local_optimize_graph(irg);
/* do code placement, to optimize the position of constants */
place_code(irg);
}
