8366588: VectorAPI: Re-intrinsify VectorMask.laneIsSet where the input index is a variable

src/hotspot/share/opto/vectorIntrinsics.cpp

@@ -2502,7 +2502,7 @@ bool LibraryCallKit::inline_vector_extract() {
   if (vector_klass == nullptr || vector_klass->const_oop() == nullptr ||
       elem_klass   == nullptr || elem_klass->const_oop()   == nullptr ||
       vlen         == nullptr || !vlen->is_con() ||
-      idx          == nullptr || !idx->is_con()) {
+      idx          == nullptr) {
     log_if_needed("  ** missing constant: vclass=%s etype=%s vlen=%s",
                     NodeClassNames[argument(0)->Opcode()],
                     NodeClassNames[argument(1)->Opcode()],

test/hotspot/jtreg/compiler/lib/ir_framework/IRNode.java

@@ -1417,6 +1417,11 @@ public class IRNode {
         beforeMatchingNameRegex(VECTOR_MASK_TO_LONG, "VectorMaskToLong");
     }
 
+    public static final String VECTOR_MASK_LANE_IS_SET = PREFIX + "VECTOR_MASK_LANE_IS_SET" + POSTFIX;
+    static {
+        beforeMatchingNameRegex(VECTOR_MASK_LANE_IS_SET, "ExtractUB");
+    }
+
     // Can only be used if avx512_vnni is available.
     public static final String MUL_ADD_VS2VI_VNNI = PREFIX + "MUL_ADD_VS2VI_VNNI" + POSTFIX;
     static {

test/hotspot/jtreg/compiler/vectorapi/VectorMaskLaneIsSetTest.java

@@ -0,0 +1,160 @@
+/*
+ * Copyright (c) 2025, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package compiler.vectorapi;
+
+import compiler.lib.ir_framework.*;
+import jdk.incubator.vector.*;
+import jdk.test.lib.Asserts;
+
+/**
+ * @test
+ * @bug 8366588
+ * @key randomness
+ * @library /test/lib /
+ * @summary VectorAPI: Re-intrinsify VectorMask.laneIsSet where the input index is a variable
+ * @modules jdk.incubator.vector
+ *
+ * @run driver compiler.vectorapi.VectorMaskLaneIsSetTest
+ */
+
+public class VectorMaskLaneIsSetTest {
+    static final VectorSpecies<Byte> B_SPECIES = ByteVector.SPECIES_MAX;
+    static final VectorSpecies<Short> S_SPECIES = ShortVector.SPECIES_MAX;
+    static final VectorSpecies<Integer> I_SPECIES = IntVector.SPECIES_MAX;
+    static final VectorSpecies<Float> F_SPECIES = FloatVector.SPECIES_MAX;
+    static final VectorSpecies<Long> L_SPECIES = LongVector.SPECIES_MAX;
+    static final VectorSpecies<Double> D_SPECIES = DoubleVector.SPECIES_MAX;
+    static final int LENGTH = 512;
+    static boolean[] ma;
+    static VectorMask<Byte> mask_b;
+    static VectorMask<Short> mask_s;
+    static VectorMask<Integer> mask_i;
+    static VectorMask<Long> mask_l;
+    static VectorMask<Float> mask_f;
+    static VectorMask<Double> mask_d;
+
+    static {
+        ma = new boolean[LENGTH];
+        for (int i = 0; i < LENGTH; i++) {
+            ma[i] = i % 2 == 0;
+        }
+        mask_b = VectorMask.fromArray(B_SPECIES, ma, 0);
+        mask_s = VectorMask.fromArray(S_SPECIES, ma, 0);
+        mask_i = VectorMask.fromArray(I_SPECIES, ma, 0);
+        mask_l = VectorMask.fromArray(L_SPECIES, ma, 0);
+        mask_f = VectorMask.fromArray(F_SPECIES, ma, 0);
+        mask_d = VectorMask.fromArray(D_SPECIES, ma, 0);
+    }
+
+    @Test
+    @IR(counts = { IRNode.VECTOR_MASK_LANE_IS_SET, "= 6" }, applyIfCPUFeature = { "asimd", "true" })
+    @IR(counts = { IRNode.VECTOR_MASK_TO_LONG, "= 6" }, applyIfCPUFeature = { "avx2", "true" })
+    public static void testVectorMaskLaneIsSetByte_const() {
+        Asserts.assertEquals(ma[0], mask_b.laneIsSet(0));
+        Asserts.assertEquals(ma[0], mask_s.laneIsSet(0));
+        Asserts.assertEquals(ma[0], mask_i.laneIsSet(0));
+        Asserts.assertEquals(ma[0], mask_l.laneIsSet(0));
+        Asserts.assertEquals(ma[0], mask_f.laneIsSet(0));
+        Asserts.assertEquals(ma[0], mask_d.laneIsSet(0));
+    }
+
+    @Test
+    @IR(counts = { IRNode.VECTOR_MASK_LANE_IS_SET, "= 1" }, applyIfCPUFeature = { "asimd", "true" })
+    @IR(counts = { IRNode.VECTOR_MASK_TO_LONG, "= 1" }, applyIfCPUFeature = { "avx", "true" })
+    public static boolean testVectorMaskLaneIsSet_Byte_variable(int i) {
+        return mask_b.laneIsSet(i);
+    }
+
+    @Run(test = "testVectorMaskLaneIsSet_Byte_variable")
+    public static void testVectorMaskLaneIsSet_Byte_variable_runner() {
+        Asserts.assertEquals(ma[0], testVectorMaskLaneIsSet_Byte_variable(0));
+    }
+
+    @Test
+    @IR(counts = { IRNode.VECTOR_MASK_LANE_IS_SET, "= 1" }, applyIfCPUFeature = { "asimd", "true" })
+    @IR(counts = { IRNode.VECTOR_MASK_TO_LONG, "= 1" }, applyIfCPUFeature = { "avx", "true" })
+    public static boolean testVectorMaskLaneIsSet_Short_variable(int i) {
+        return mask_s.laneIsSet(i);
+    }
+
+    @Run(test = "testVectorMaskLaneIsSet_Short_variable")
+    public static void testVectorMaskLaneIsSet_Short_variable_runner() {
+        Asserts.assertEquals(ma[0], testVectorMaskLaneIsSet_Short_variable(0));
+    }
+
+    @Test
+    @IR(counts = { IRNode.VECTOR_MASK_LANE_IS_SET, "= 1" }, applyIfCPUFeature = { "asimd", "true" })
+    @IR(counts = { IRNode.VECTOR_MASK_TO_LONG, "= 1" }, applyIfCPUFeature = { "avx", "true" })
+    public static boolean testVectorMaskLaneIsSet_Int_variable(int i) {
+        return mask_i.laneIsSet(i);
+    }
+
+    @Run(test = "testVectorMaskLaneIsSet_Int_variable")
+    public static void testVectorMaskLaneIsSet_Int_variable_runner() {
+        Asserts.assertEquals(ma[0], testVectorMaskLaneIsSet_Int_variable(0));
+    }
+
+    @Test
+    @IR(counts = { IRNode.VECTOR_MASK_LANE_IS_SET, "= 1" }, applyIfCPUFeature = { "asimd", "true" })
+    @IR(counts = { IRNode.VECTOR_MASK_TO_LONG, "= 1" }, applyIfCPUFeature = { "avx2", "true" })
+    public static boolean testVectorMaskLaneIsSet_Long_variable(int i) {
+        return mask_l.laneIsSet(i);
+    }
+
+    @Run(test = "testVectorMaskLaneIsSet_Long_variable")
+    public static void testVectorMaskLaneIsSet_Long_variable_runner() {
+        Asserts.assertEquals(ma[0], testVectorMaskLaneIsSet_Long_variable(0));
+    }
+
+    @Test
+    @IR(counts = { IRNode.VECTOR_MASK_LANE_IS_SET, "= 1" }, applyIfCPUFeature = { "asimd", "true" })
+    @IR(counts = { IRNode.VECTOR_MASK_TO_LONG, "= 1" }, applyIfCPUFeature = { "avx", "true" })
+    public static boolean testVectorMaskLaneIsSet_Float_variable(int i) {
+        return mask_f.laneIsSet(i);
+    }
+
+    @Run(test = "testVectorMaskLaneIsSet_Float_variable")
+    public static void testVectorMaskLaneIsSet_Float_variable_runner() {
+        Asserts.assertEquals(ma[0], testVectorMaskLaneIsSet_Float_variable(0));
+    }
+
+    @Test
+    @IR(counts = { IRNode.VECTOR_MASK_LANE_IS_SET, "= 1" }, applyIfCPUFeature = { "asimd", "true" })
+    @IR(counts = { IRNode.VECTOR_MASK_TO_LONG, "= 1" }, applyIfCPUFeature = { "avx2", "true" })
+    public static boolean testVectorMaskLaneIsSet_Double_variable(int i) {
+        return mask_d.laneIsSet(i);
+    }
+
+    @Run(test = "testVectorMaskLaneIsSet_Double_variable")
+    public static void testVectorMaskLaneIsSet_Double_variable_runner() {
+        Asserts.assertEquals(ma[0], testVectorMaskLaneIsSet_Double_variable(0));
+    }
+
+    public static void main(String[] args) {
+        TestFramework testFramework = new TestFramework();
+        testFramework.setDefaultWarmup(10000)
+                     .addFlags("--add-modules=jdk.incubator.vector")
+                     .start();
+    }
+}

test/micro/org/openjdk/bench/jdk/incubator/vector/VectorExtractBenchmark.java

@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2023, Arm Limited. All rights reserved.
+ * Copyright (c) 2025, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -28,7 +29,9 @@
 
 @OutputTimeUnit(TimeUnit.MILLISECONDS)
 @State(Scope.Thread)
-@Fork(jvmArgs = {"--add-modules=jdk.incubator.vector"})
+@Warmup(iterations = 5, time = 1)
+@Measurement(iterations = 5, time = 1)
+@Fork(value = 1, jvmArgs = {"--add-modules=jdk.incubator.vector"})
 public class VectorExtractBenchmark {
     private int idx = 0;
     private boolean[] res = new boolean[8];