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8263450: Simplify LambdaForm.useCount

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Reviewed-by: rriggs
This commit is contained in:
Claes Redestad 2021-03-16 14:56:24 +00:00
parent 75ef6f580e
commit e33bfb3977
1 changed files with 10 additions and 12 deletions
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22
src/java.base/share/classes/java/lang/invoke/LambdaForm.java
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@ -1598,10 +1598,13 @@ class LambdaForm {
* Return 0 if the name is not used. * Return 0 if the name is not used.
*/ */
int useCount(Name n) { int useCount(Name n) {
if (arguments == null) return 0;
int count = 0; int count = 0;
for (int i = arguments.length; --i >= 0; ) { if (arguments != null) {
if (arguments[i] == n) ++count; for (Object argument : arguments) {
if (argument == n) {
count++;
}
}
} }
return count; return count;
} }
@ -1649,15 +1652,10 @@ class LambdaForm {
/** Return the number of times n is used as an argument or return value. */ /** Return the number of times n is used as an argument or return value. */
int useCount(Name n) { int useCount(Name n) {
int nmax = names.length; int count = (result == n.index) ? 1 : 0;
int end = lastUseIndex(n); int i = Math.max(n.index + 1, arity);
if (end < 0) return 0; while (i < names.length) {
int count = 0; count += names[i++].useCount(n);
if (end == nmax) { count++; end--; }
int beg = n.index() + 1;
if (beg < arity) beg = arity;
for (int i = beg; i <= end; i++) {
count += names[i].useCount(n);
} }
return count; return count;
} }