fix PyLongNumBits node (int / long specializations)

cosminbasca · cosminbasca · commit d78e31a25e20 · 2021-06-01T16:22:34.000+03:00
diff --git a/graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/ints/IntNodes.java b/graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/ints/IntNodes.java
@@ -87,12 +87,12 @@ public abstract static class PyLongNumBits extends Node {
 
         @Specialization
         static int doInt(int value) {
-            return Integer.bitCount(value);
+            return Integer.SIZE - Integer.numberOfLeadingZeros(Math.abs(value));
         }
 
         @Specialization
         static int doLong(long value) {
-            return Long.bitCount(value);
+            return Long.SIZE - Long.numberOfLeadingZeros(Math.abs(value));
         }
 
         @Specialization

Original file line number	Diff line number	Diff line change
`@@ -87,12 +87,12 @@ public abstract static class PyLongNumBits extends Node {`
`87`	`87`
`88`	`88`	`@Specialization`
`89`	`89`	`static int doInt(int value) {`
`90`		`- return Integer.bitCount(value);`
	`90`	`+ return Integer.SIZE - Integer.numberOfLeadingZeros(Math.abs(value));`
`91`	`91`	`}`
`92`	`92`
`93`	`93`	`@Specialization`
`94`	`94`	`static int doLong(long value) {`
`95`		`- return Long.bitCount(value);`
	`95`	`+ return Long.SIZE - Long.numberOfLeadingZeros(Math.abs(value));`
`96`	`96`	`}`
`97`	`97`
`98`	`98`	`@Specialization`