diff options
Diffstat (limited to 'gcc/global.c')
| -rw-r--r-- | gcc/global.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/gcc/global.c b/gcc/global.c index bdd33868d57..13b81736859 100644 --- a/gcc/global.c +++ b/gcc/global.c @@ -36,6 +36,8 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA #include "reload.h" #include "output.h" #include "toplev.h" +#include "tree-pass.h" +#include "timevar.h" /* This pass of the compiler performs global register allocation. It assigns hard register numbers to all the pseudo registers @@ -2474,3 +2476,50 @@ make_accurate_live_analysis (void) } free_bb_info (); } +/* Run old register allocator. Return TRUE if we must exit + rest_of_compilation upon return. */ +static void +rest_of_handle_global_alloc (void) +{ + bool failure; + + /* If optimizing, allocate remaining pseudo-regs. Do the reload + pass fixing up any insns that are invalid. */ + + if (optimize) + failure = global_alloc (dump_file); + else + { + build_insn_chain (get_insns ()); + failure = reload (get_insns (), 0); + } + + if (dump_enabled_p (pass_global_alloc.static_pass_number)) + { + timevar_push (TV_DUMP); + dump_global_regs (dump_file); + timevar_pop (TV_DUMP); + } + + gcc_assert (reload_completed || failure); + reload_completed = !failure; +} + +struct tree_opt_pass pass_global_alloc = +{ + "greg", /* name */ + NULL, /* gate */ + rest_of_handle_global_alloc, /* execute */ + NULL, /* sub */ + NULL, /* next */ + 0, /* static_pass_number */ + TV_GLOBAL_ALLOC, /* tv_id */ + 0, /* properties_required */ + 0, /* properties_provided */ + 0, /* properties_destroyed */ + 0, /* todo_flags_start */ + TODO_dump_func | + TODO_ggc_collect, /* todo_flags_finish */ + 'g' /* letter */ +}; + |