diff options
Diffstat (limited to 'gcc/tree.h')
| -rw-r--r-- | gcc/tree.h | 22 |
1 files changed, 6 insertions, 16 deletions
@@ -1312,20 +1312,6 @@ struct tree_exp GTY(()) #define SSA_NAME_IN_FREE_LIST(NODE) \ SSA_NAME_CHECK (NODE)->common.nothrow_flag -/* If NAME is equivalent to some other SSA_NAME or an invariant, then - return the equivalent SSA_NAME or invariant, else return NULL. */ -#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; \ - }) - -/* Record that NAME (an SSA_NAME) is equivalent to 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 @@ -1357,8 +1343,12 @@ struct tree_ssa_name GTY(()) /* Pointer attributes used for alias analysis. */ struct ptr_info_def *ptr_info; - /* Value for SSA name used by GVN. */ - tree GTY((skip)) value_handle; + /* Value for SSA name used by various passes. + + Right now only invariants are allowed to persist beyond a pass in + this field; in the future we will allow VALUE_HANDLEs to persist + as well. */ + tree value_handle; /* Auxiliary information stored with the ssa name. */ PTR GTY((skip)) aux; |