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authorTavian Barnes <tavianator@tavianator.com>2023-11-09 13:02:59 -0500
committerTavian Barnes <tavianator@tavianator.com>2023-11-09 15:35:37 -0500
commit0a5091a9005b485fccad689a4cbf081802860a5a (patch)
tree492e2b0f0ee76ddacf740d60bbbfa458cca1fc3d /src
parent026e8fbd248561396752552efa3cc04e0ac832b7 (diff)
downloadbfs-0a5091a9005b485fccad689a4cbf081802860a5a.tar.xz
config: New attr_target_clones() macro
Diffstat (limited to 'src')
-rw-r--r--src/config.h9
-rw-r--r--src/trie.c16
2 files changed, 17 insertions, 8 deletions
diff --git a/src/config.h b/src/config.h
index f19677c..3100cec 100644
--- a/src/config.h
+++ b/src/config.h
@@ -202,4 +202,13 @@
# endif
#endif
+/**
+ * Apply the target_clones attribute, if available.
+ */
+#if BFS_USE_TARGET_CLONES
+# define attr_target_clones(...) __attribute__((target_clones(__VA_ARGS__)))
+#else
+# define attr_target_clones(...)
+#endif
+
#endif // BFS_CONFIG_H
diff --git a/src/trie.c b/src/trie.c
index 23b70ff..cf55cee 100644
--- a/src/trie.c
+++ b/src/trie.c
@@ -94,10 +94,10 @@
bfs_static_assert(CHAR_WIDTH == 8);
-#if BFS_USE_TARGET_CLONES && (__i386__ || __x86_64__)
-# define TARGET_CLONES_POPCNT __attribute__((target_clones("popcnt", "default")))
+#if __i386__ || __x86_64__
+# define trie_clones attr_target_clones("popcnt", "default")
#else
-# define TARGET_CLONES_POPCNT
+# define trie_clones
#endif
/** Number of bits for the sparse array bitmap, aka the range of a nibble. */
@@ -192,7 +192,7 @@ static unsigned char trie_key_nibble(const void *key, size_t offset) {
* that case, the first mismatch between the key and the representative will be
* the depth at which to make a new branch to insert the key.
*/
-TARGET_CLONES_POPCNT
+trie_clones
static struct trie_leaf *trie_representative(const struct trie *trie, const void *key, size_t length) {
uintptr_t ptr = trie->root;
if (!ptr) {
@@ -271,7 +271,7 @@ static bool trie_check_prefix(struct trie_leaf *leaf, size_t skip, const char *k
}
}
-TARGET_CLONES_POPCNT
+trie_clones
static struct trie_leaf *trie_find_prefix_impl(const struct trie *trie, const char *key) {
uintptr_t ptr = trie->root;
if (!ptr) {
@@ -429,7 +429,7 @@ static size_t trie_mismatch(const struct trie_leaf *rep, const void *key, size_t
* | Z
* +--->...
*/
-TARGET_CLONES_POPCNT
+trie_clones
static struct trie_leaf *trie_node_insert(struct trie *trie, uintptr_t *ptr, struct trie_leaf *leaf, unsigned char nibble) {
struct trie_node *node = trie_decode_node(*ptr);
unsigned int size = count_ones(node->bitmap);
@@ -552,7 +552,7 @@ struct trie_leaf *trie_insert_str(struct trie *trie, const char *key) {
return trie_insert_mem(trie, key, strlen(key) + 1);
}
-TARGET_CLONES_POPCNT
+trie_clones
static struct trie_leaf *trie_insert_mem_impl(struct trie *trie, const void *key, size_t length) {
struct trie_leaf *rep = trie_representative(trie, key, length);
size_t mismatch = trie_mismatch(rep, key, length);
@@ -654,7 +654,7 @@ static int trie_collapse_node(struct trie *trie, uintptr_t *parent, struct trie_
return 0;
}
-TARGET_CLONES_POPCNT
+trie_clones
static void trie_remove_impl(struct trie *trie, struct trie_leaf *leaf) {
uintptr_t *child = &trie->root;
uintptr_t *parent = NULL;