This is my assembly freak side looking at generated code again. And
since create_delta() is certainly pretty high on the radar every bits
count. In this case shorter code is generated if hash_mask is not
copied to a local variable.
Signed-off-by: Nicolas Pitre <nico@xxxxxxx>
---
diff --git a/diff-delta.c b/diff-delta.c
index 26540d8..c618875 100644
--- a/diff-delta.c
+++ b/diff-delta.c
@@ -253,7 +253,7 @@ create_delta(const struct delta_index *i
const void *trg_buf, unsigned long trg_size,
unsigned long *delta_size, unsigned long max_size)
{
- unsigned int i, outpos, outsize, hash_mask, val;
+ unsigned int i, outpos, outsize, val;
int inscnt;
const unsigned char *ref_data, *ref_top, *data, *top;
unsigned char *out;
@@ -289,7 +289,6 @@ create_delta(const struct delta_index *i
ref_top = ref_data + index->src_size;
data = trg_buf;
top = trg_buf + trg_size;
- hash_mask = index->hash_mask;
outpos++;
val = 0;
@@ -304,7 +303,7 @@ create_delta(const struct delta_index *i
struct index_entry *entry;
val ^= U[data[-RABIN_WINDOW]];
val = ((val << 8) | *data) ^ T[val >> RABIN_SHIFT];
- i = val & hash_mask;
+ i = val & index->hash_mask;
for (entry = index->hash[i]; entry; entry = entry->next) {
const unsigned char *ref = entry->ptr;
const unsigned char *src = data;
-
: send the line "unsubscribe git" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html