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Broadening the use of branch hints

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More uses of macros 'likely'/'unlikely' (renamed to
'l_likely'/'l_unlikely'), both in range (extended to the
libraries) and in scope (extended to hooks, stack growth).
This commit is contained in:
Roberto Ierusalimschy
2021-02-24 11:14:44 -03:00
parent c03c527fd2
commit 59c88f846d
24 changed files with 162 additions and 141 deletions
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6
ldblib.c
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@@ -33,7 +33,7 @@ static const char *const HOOKKEY = "_HOOKKEY";
** checked.
*/
static void checkstack (lua_State *L, lua_State *L1, int n) {
if (L != L1 && !lua_checkstack(L1, n))
if (l_unlikely(L != L1 && !lua_checkstack(L1, n)))
luaL_error(L, "stack overflow");
}
@@ -213,7 +213,7 @@ static int db_getlocal (lua_State *L) {
lua_Debug ar;
const char *name;
int level = (int)luaL_checkinteger(L, arg + 1);
if (!lua_getstack(L1, level, &ar)) /* out of range? */
if (l_unlikely(!lua_getstack(L1, level, &ar))) /* out of range? */
return luaL_argerror(L, arg+1, "level out of range");
checkstack(L, L1, 1);
name = lua_getlocal(L1, &ar, nvar);
@@ -238,7 +238,7 @@ static int db_setlocal (lua_State *L) {
lua_Debug ar;
int level = (int)luaL_checkinteger(L, arg + 1);
int nvar = (int)luaL_checkinteger(L, arg + 2);
if (!lua_getstack(L1, level, &ar)) /* out of range? */
if (l_unlikely(!lua_getstack(L1, level, &ar))) /* out of range? */
return luaL_argerror(L, arg+1, "level out of range");
luaL_checkany(L, arg+3);
lua_settop(L, arg+3);