diff options
Diffstat (limited to 'gcc/postreload.c')
| -rw-r--r-- | gcc/postreload.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/gcc/postreload.c b/gcc/postreload.c index 6877cd39e34..d164ae17f10 100644 --- a/gcc/postreload.c +++ b/gcc/postreload.c @@ -44,6 +44,8 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA #include "toplev.h" #include "except.h" #include "tree.h" +#include "timevar.h" +#include "tree-pass.h" static int reload_cse_noop_set_p (rtx); static void reload_cse_simplify (rtx, rtx); @@ -1561,3 +1563,39 @@ move2add_note_store (rtx dst, rtx set, void *data ATTRIBUTE_UNUSED) reg_set_luid[i] = 0; } } + +static bool +gate_handle_postreload (void) +{ + return (optimize > 0); +} + + +static void +rest_of_handle_postreload (void) +{ + /* Do a very simple CSE pass over just the hard registers. */ + reload_cse_regs (get_insns ()); + /* reload_cse_regs can eliminate potentially-trapping MEMs. + Remove any EH edges associated with them. */ + if (flag_non_call_exceptions) + purge_all_dead_edges (); +} + +struct tree_opt_pass pass_postreload_cse = +{ + "postreload", /* name */ + gate_handle_postreload, /* gate */ + rest_of_handle_postreload, /* execute */ + NULL, /* sub */ + NULL, /* next */ + 0, /* static_pass_number */ + TV_RELOAD_CSE_REGS, /* tv_id */ + 0, /* properties_required */ + 0, /* properties_provided */ + 0, /* properties_destroyed */ + 0, /* todo_flags_start */ + TODO_dump_func, /* todo_flags_finish */ + 'o' /* letter */ +}; + |
