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Sprinkle a few strategic likely()'s 

Shrinks the code size by some 2% even.
This commit is contained in:
Behdad Esfahbod 2010-05-10 23:27:54 -04:00
parent 69cb28bc13
commit 4c20d8c057
2 changed files with 12 additions and 12 deletions
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4
src/hb-open-file-private.hh
View File

@ -168,7 +168,7 @@ struct TTCHeader
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
if (!u.header.version.sanitize (context)) return false;
if (unlikely (!u.header.version.sanitize (context))) return false;
switch (u.header.version) {
case 2: /* version 2 is compatible with version 1 */
case 1: return u.version1.sanitize (context);
@ -230,7 +230,7 @@ struct OpenTypeFontFile
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
if (!u.tag.sanitize (context)) return false;
if (unlikely (!u.tag.sanitize (context))) return false;
switch (u.tag) {
case CFFTag: /* All the non-collection tags */
case TrueTag:

20
src/hb-open-type-private.hh
View File

@ -386,7 +386,7 @@ struct IntType
inline bool operator != (const IntType<Type> &o) const { return v != o.v; }
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
return context->check_struct (this);
return likely (context->check_struct (this));
}
protected:
BEInt<Type, sizeof (Type)> v;
@ -482,7 +482,7 @@ struct GenericOffsetTo : OffsetType
inline bool sanitize (hb_sanitize_context_t *context, void *base) {
TRACE_SANITIZE ();
if (!context->check_struct (this)) return false;
if (unlikely (!context->check_struct (this))) return false;
unsigned int offset = *this;
if (unlikely (!offset)) return true;
Type &obj = StructAtOffset<Type> (base, offset);
@ -491,7 +491,7 @@ struct GenericOffsetTo : OffsetType
template <typename T>
inline bool sanitize (hb_sanitize_context_t *context, void *base, T user_data) {
TRACE_SANITIZE ();
if (!context->check_struct (this)) return false;
if (unlikely (!context->check_struct (this))) return false;
unsigned int offset = *this;
if (unlikely (!offset)) return true;
Type &obj = StructAtOffset<Type> (base, offset);
@ -547,7 +547,7 @@ struct GenericArrayOf
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
if (!likely (sanitize_shallow (context))) return false;
if (unlikely (!sanitize_shallow (context))) return false;
/* Note: for structs that do not reference other structs,
* we do not need to call their sanitize() as we already did
* a bound check on the aggregate array size, hence the return.
@ -564,20 +564,20 @@ struct GenericArrayOf
}
inline bool sanitize (hb_sanitize_context_t *context, void *base) {
TRACE_SANITIZE ();
if (!likely (sanitize_shallow (context))) return false;
if (unlikely (!sanitize_shallow (context))) return false;
unsigned int count = len;
for (unsigned int i = 0; i < count; i++)
if (!array[i].sanitize (context, base))
if (unlikely (!array[i].sanitize (context, base)))
return false;
return true;
}
template <typename T>
inline bool sanitize (hb_sanitize_context_t *context, void *base, T user_data) {
TRACE_SANITIZE ();
if (!likely (sanitize_shallow (context))) return false;
if (unlikely (!sanitize_shallow (context))) return false;
unsigned int count = len;
for (unsigned int i = 0; i < count; i++)
if (!array[i].sanitize (context, base, user_data))
if (unlikely (!array[i].sanitize (context, base, user_data)))
return false;
return true;
}
@ -658,7 +658,7 @@ struct HeadlessArrayOf
inline bool sanitize (hb_sanitize_context_t *context) {
TRACE_SANITIZE ();
if (!likely (sanitize_shallow (context))) return false;
if (unlikely (!sanitize_shallow (context))) return false;
/* Note: for structs that do not reference other structs,
* we do not need to call their sanitize() as we already did
* a bound check on the aggregate array size, hence the return.
@ -670,7 +670,7 @@ struct HeadlessArrayOf
unsigned int count = len ? len - 1 : 0;
Type *a = array;
for (unsigned int i = 0; i < count; i++)
if (!a[i].sanitize (context))
if (unlikely (!a[i].sanitize (context)))
return false;
return true;
}