Changeset 1841

Timestamp:

Oct 11, 2008, 10:04:46 PM (16 years ago)

Author:

bird

Message:

misc: some more unroll attemtps.

File:

• trunk/src/kmk/misc.c (modified) (2 diffs)

trunk/src/kmk/misc.c ¶

@@ -496 +496 @@
 end_of_token (const char *s)
 {
+#ifdef KMK
+    for (;;)
+      {
+        unsigned char ch0, ch1, ch2, ch3;
+
+        ch0 = *s;
+        if (MY_PREDICT_FALSE(isblank(ch0) || ch0 == '\0'))
+          return (char *)s;
+        ch1 = s[1];
+        if (MY_PREDICT_FALSE(isblank(ch1) || ch1 == '\0'))
+          return (char *)s + 1;
+        ch2 = s[2];
+        if (MY_PREDICT_FALSE(isblank(ch2) || ch2 == '\0'))
+          return (char *)s + 2;
+        ch3 = s[3];
+        if (MY_PREDICT_FALSE(isblank(ch3) || ch3 == '\0'))
+          return (char *)s + 3;
+
+        s += 4;
+      }
+
+#else
   while (*s != '\0' && !isblank ((unsigned char)*s))
     ++s;
   return (char *)s;
+#endif
 }
 
@@ -536 +559 @@
 next_token (const char *s)
 {
+#ifdef KMK
+  for (;;)
+    {
+      unsigned char ch0, ch1, ch2, ch3;
+
+      ch0 = *s;
+      if (MY_PREDICT_FALSE(!isblank(ch0)))
+          return (char *)s;
+      ch1 = s[1];
+      if (MY_PREDICT_FALSE(!isblank(ch1)))
+        return (char *)s + 1;
+      ch2 = s[2];
+      if (MY_PREDICT_FALSE(!isblank(ch2)))
+        return (char *)s + 2;
+      ch3 = s[3];
+      if (MY_PREDICT_TRUE(!isblank(ch3)))
+        return (char *)s + 3;
+
+      s += 4;
+    }
+
+#else  /* !KMK */
   while (isblank ((unsigned char)*s))
     ++s;
   return (char *)s;
+#endif /* !KMK */
 }