diff options
| author | Richard Sandiford <richard.sandiford@arm.com> | 2015-06-25 17:16:02 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2015-06-25 17:16:02 +0000 |
| commit | 5d6678ae80850da572b28776ef9dd19b04d5fefd (patch) | |
| tree | af7ce16a0d3a01d46fbfdf11fee855773e841859 /gcc/tree-hash-traits.h | |
| parent | 910ee068dfe96a049298066301b2f48e00299789 (diff) | |
| download | gcc-5d6678ae80850da572b28776ef9dd19b04d5fefd.zip gcc-5d6678ae80850da572b28776ef9dd19b04d5fefd.tar.gz gcc-5d6678ae80850da572b28776ef9dd19b04d5fefd.tar.bz2 | |
tree-hash-traits.h (tree_ssa_name_hasher): New class.
gcc/
* tree-hash-traits.h (tree_ssa_name_hasher): New class.
* sese.c: Include tree-hash-traits.h.
(rename_map_hasher): Use tree_ssa_name_hasher.
From-SVN: r224969
Diffstat (limited to 'gcc/tree-hash-traits.h')
| -rw-r--r-- | gcc/tree-hash-traits.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/tree-hash-traits.h b/gcc/tree-hash-traits.h index 9a2fda7..1f4364f 100644 --- a/gcc/tree-hash-traits.h +++ b/gcc/tree-hash-traits.h @@ -53,4 +53,18 @@ tree_decl_hash::hash (tree t) return DECL_UID (t); } +/* Hash for SSA_NAMEs in the same function. Pointer equality is enough + here, but the SSA_NAME_VERSION is a better hash than the pointer + value and gives a predictable traversal order. */ +struct tree_ssa_name_hash : ggc_ptr_hash <tree_node> +{ + static inline hashval_t hash (tree); +}; + +inline hashval_t +tree_ssa_name_hash::hash (tree t) +{ + return SSA_NAME_VERSION (t); +} + #endif |