diff options
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index c1dacf487a0..c5778d1928b 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -44,6 +44,7 @@ along with GCC; see the file COPYING3. If not see struct target_optabs default_target_optabs; struct target_libfuncs default_target_libfuncs; +struct target_optabs *this_fn_optabs = &default_target_optabs; #if SWITCHABLE_TARGET struct target_optabs *this_target_optabs = &default_target_optabs; struct target_libfuncs *this_target_libfuncs = &default_target_libfuncs; @@ -6150,7 +6151,7 @@ init_optabs (void) libfunc_hash = htab_create_ggc (10, hash_libfunc, eq_libfunc, NULL); /* Fill in the optabs with the insns we support. */ - init_all_optabs (); + init_all_optabs (this_fn_optabs); /* The ffs function operates on `int'. Fall back on it if we do not have a libgcc2 function for that width. */ @@ -6207,6 +6208,38 @@ init_optabs (void) targetm.init_libfuncs (); } +/* Recompute the optabs and save them if they have changed. */ + +void +save_optabs_if_changed (tree fndecl) +{ + /* ?? If this fails, we should temporarily restore the default + target first (set_cfun (NULL) ??), do the rest of this function, + and then restore it. */ + gcc_assert (this_target_optabs == &default_target_optabs); + + struct target_optabs *tmp_optabs = (struct target_optabs *) + ggc_alloc_atomic (sizeof (struct target_optabs)); + tree optnode = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (fndecl); + + /* Generate a new set of optabs into tmp_optabs. */ + init_all_optabs (tmp_optabs); + + /* If the optabs changed, record it. */ + if (memcmp (tmp_optabs, this_target_optabs, sizeof (struct target_optabs))) + { + if (TREE_OPTIMIZATION_OPTABS (optnode)) + ggc_free (TREE_OPTIMIZATION_OPTABS (optnode)); + + TREE_OPTIMIZATION_OPTABS (optnode) = (unsigned char *) tmp_optabs; + } + else + { + TREE_OPTIMIZATION_OPTABS (optnode) = NULL; + ggc_free (tmp_optabs); + } +} + /* A helper function for init_sync_libfuncs. Using the basename BASE, install libfuncs into TAB for BASE_N for 1 <= N <= MAX. */ |