.

benchmark/src/vectorAddition.scala

@@ -74,14 +74,14 @@ class AddScalarBenchmark extends BLASBenchmark:
 
   @Benchmark
   def vecxt_add(bh: Blackhole) =
-    val add1 = vec.scalarPlus(4.5)
-    bh.consume(add1);
+    vec.scalarPlus(4.5)
+    bh.consume(vec);
   end vecxt_add
 
   @Benchmark
   def vecxt_add_vec(bh: Blackhole) =
-    val add1 = vec2 +:+= 4.5
-    bh.consume(add1);
+    vec2 +:+= 4.5
+    bh.consume(vec2);
   end vecxt_add_vec
 end AddScalarBenchmark
 

justfile

@@ -7,4 +7,4 @@ benchmark:
   mill benchmark.runJmh -jvmArgs --add-modules=jdk.incubator.vector -rf json
 
 benchmarkOnly:
-  mill benchmark.runJmh -jvmArgs --add-modules=jdk.incubator.vector -rf json vecxt.benchmark.IncrementBenchmark
+  mill benchmark.runJmh -jvmArgs --add-modules=jdk.incubator.vector -rf json vecxt.benchmark.AddScalarBenchmark

site/docs/_assets/plots/addScalar.vg.json

@@ -1,5 +1,6 @@
 {
   "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
+
   "data": {
     "url": "../../benchmarks/benchmark_history.json",
     "format": {

vecxt/jvm/src/package.scala

@@ -57,9 +57,21 @@ object extensions:
   end extension
   extension (vec: Array[Boolean])
     inline def countTrue: Int =
+      val species = VectorSpecies.ofBoolean(VectorSpecies.PREFERRED)
+      val length = species.length()
       var sum = 0
-      for i <- 0 until vec.length do if vec(i) then sum = sum + 1
-      end for
+      var i = 0
+
+      while i < species.loopBound(vec.length) do
+        sum += DoubleVector.fromArray(species, vec, i).compare(VectorOperators.EQ, true).trueCount
+        i += length
+      end while
+
+      while i < vec.length do
+        if vec(i) then
+          sum += 1
+          i += 1
+      end while
       sum
     end countTrue