diff options
| author | Jeff Law <law@redhat.com> | 2004-09-20 21:19:00 -0600 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2004-09-20 21:19:00 -0600 |
| commit | 6f2aec072e075953002d9b9afb7aed7224e33d71 (patch) | |
| tree | d63342eb84f672e7ec05ab0664ccacf61232ea1a /gcc/tree.h | |
| parent | c162c75e43f4813cd30a1d4a693ce20f35a3f9fb (diff) | |
| download | gcc-6f2aec072e075953002d9b9afb7aed7224e33d71.zip gcc-6f2aec072e075953002d9b9afb7aed7224e33d71.tar.gz gcc-6f2aec072e075953002d9b9afb7aed7224e33d71.tar.bz2 | |
tree-ssanames.c (make_ssa_name): No longer need to clear, then initialize key elements here.
* tree-ssanames.c (make_ssa_name): No longer need to clear, then
initialize key elements here.
(release_ssa_name): Zero the released SSA_NAME here.
* tree.h (SSA_NAME_EQUIV, SET_SSA_NAME_EQUIV): New macros.
(struct tree_ssa_name): Add new "equiv" field.
* tree-ssa-dom.c (const_and_copies): Kill the global varray.
(tree_ssa_dominator_optimize): No longer allocate, resize or
clear CONST_AND_COPIES.
(get_value_for, set_value_for): Kill.
(thread_across_edge): Get/set the equivalency using
SSA_NAME_EQUIV and SET_SSA_NAME_EQUIV.
(restore_vars_to_original_value): Likewise.
(record_equivalences_from_phis): Likewise.
(record_dominating_conditions): Likewise.
(record_const_or_copy, record_equality): Likewise.
(lookup_avail_expr): Likewise.
(record_equivalences_from_stmt, cprop_operand): Likewise.
(cprop_into_successor_phis): No longer need to pass around
CONST_AND_COPIES. Callers updated. Get equivalences via
SSA_NAME_EQUIV.
(cprop_into_phis): Likewise.
Co-Authored-By: Jan Hubicka <jh@suse.cz>
From-SVN: r87787
Diffstat (limited to 'gcc/tree.h')
| -rw-r--r-- | gcc/tree.h | 13 |
1 files changed, 13 insertions, 0 deletions
@@ -1304,12 +1304,23 @@ struct tree_exp GTY(()) #define SSA_NAME_OCCURS_IN_ABNORMAL_PHI(NODE) \ SSA_NAME_CHECK (NODE)->common.asm_written_flag + /* Nonzero if this SSA_NAME expression is currently on the free list of SSA_NAMES. Using NOTHROW_FLAG seems reasonably safe since throwing has no meaning for an SSA_NAME. */ #define SSA_NAME_IN_FREE_LIST(NODE) \ SSA_NAME_CHECK (NODE)->common.nothrow_flag +#define SSA_NAME_EQUIV(NAME) __extension__ \ + ({ tree equiv = SSA_NAME_CHECK (NAME)->ssa_name.equiv; \ + if (equiv && TREE_CODE (equiv) == SSA_NAME) \ + equiv = ssa_name (SSA_NAME_VERSION (equiv)); \ + equiv; \ + }) + +#define SET_SSA_NAME_EQUIV(NAME, EQUIV)\ + SSA_NAME_CHECK (NAME)->ssa_name.equiv = (EQUIV); + /* Attributes for SSA_NAMEs for pointer-type variables. */ #define SSA_NAME_PTR_INFO(N) \ SSA_NAME_CHECK (N)->ssa_name.ptr_info @@ -1333,6 +1344,8 @@ struct tree_ssa_name GTY(()) /* _DECL wrapped by this SSA name. */ tree var; + tree equiv; + /* SSA version number. */ unsigned int version; |