--- old/test/hotspot/jtreg/compiler/c2/cr6340864/TestDoubleVect.java	2019-05-03 15:46:45.631455388 -0700
+++ new/test/hotspot/jtreg/compiler/c2/cr6340864/TestDoubleVect.java	2019-05-03 15:46:45.531455391 -0700
@@ -86,6 +86,7 @@
       test_divc_n(a0, a1);
       test_divv(a0, a1, -VALUE);
       test_diva(a0, a1, a3);
+      test_negc(a0, a1);
     }
     // Test and verify results
     System.out.println("Verification");
@@ -339,6 +340,16 @@
       for (int i=12; i<ARRLEN; i++) {
         errn += verify("test_diva_n: ", i, a0[i], ((ADD_INIT+i)/(-VALUE)));
       }
+      test_negc(a0, a1);
+      errn += verify("test_negc: ", 0, a0[0], (Double.NaN));
+      errn += verify("test_negc: ", 1, a0[1], (Double.NEGATIVE_INFINITY));
+      errn += verify("test_negc: ", 2, a0[2], (Double.POSITIVE_INFINITY));
+      errn += verify("test_negc: ", 3, a0[3], (double)(-Double.MAX_VALUE));
+      errn += verify("test_negc: ", 4, a0[4], (double)(-Double.MIN_VALUE));
+      errn += verify("test_negc: ", 5, a0[5], (double)(-Double.MIN_NORMAL));
+      for (int i=6; i<ARRLEN; i++) {
+        errn += verify("test_negc: ", i, a0[i], (double)(-((double)(ADD_INIT+i))));
+      }
 
     }
 
@@ -469,6 +480,13 @@
     end = System.currentTimeMillis();
     System.out.println("test_diva_n: " + (end - start));
 
+    start = System.currentTimeMillis();
+    for (int i=0; i<ITERS; i++) {
+      test_negc(a0, a1);
+    }
+    end = System.currentTimeMillis();
+    System.out.println("test_negc_n: " + (end - start));
+
     return errn;
   }
 
@@ -553,6 +571,11 @@
       a0[i] = (a1[i]/a2[i]);
     }
   }
+  static void test_negc(double[] a0, double[] a1) {
+    for (int i = 0; i < a0.length; i+=1) {
+      a0[i] = (double)(-((double)a1[i]));
+    }
+  }
 
   static int verify(String text, int i, double elem, double val) {
     if (elem != val && !(Double.isNaN(elem) && Double.isNaN(val))) {