--- old/test/hotspot/jtreg/compiler/c2/cr6340864/TestFloatVect.java	2019-04-30 17:18:55.850965222 -0700
+++ new/test/hotspot/jtreg/compiler/c2/cr6340864/TestFloatVect.java	2019-04-30 17:18:55.746965225 -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");
@@ -340,6 +341,17 @@
         errn += verify("test_diva_n: ", i, a0[i], ((ADD_INIT+i)/(-VALUE)));
       }
 
+      test_negc(a0, a1);
+      errn += verify("test_negc: ", 0, a0[0], (Float.NaN));
+      errn += verify("test_negc: ", 1, a0[1], (Float.NEGATIVE_INFINITY));
+      errn += verify("test_negc: ", 2, a0[2], (Float.POSITIVE_INFINITY));
+      errn += verify("test_negc: ", 3, a0[3], (float)(-Float.MAX_VALUE));
+      errn += verify("test_negc: ", 4, a0[4], (float)(-Float.MIN_VALUE));
+      errn += verify("test_negc: ", 5, a0[5], (float)(-Float.MIN_NORMAL));
+      for (int i=6; i<ARRLEN; i++) {
+        errn += verify("test_negc: ", i, a0[i], (float)(-((float)(ADD_INIT+i))));
+      }
+
     }
 
     if (errn > 0)
@@ -469,6 +481,13 @@
     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;
   }
 
@@ -554,6 +573,12 @@
     }
   }
 
+  static void test_negc(float[] a0, float[] a1) {
+    for (int i = 0; i < a0.length; i+=1) {
+      a0[i] = (float)(-((float)a1[i]));
+    }
+  }
+
   static int verify(String text, int i, float elem, float val) {
     if (elem != val && !(Float.isNaN(elem) && Float.isNaN(val))) {
       System.err.println(text + "[" + i + "] = " + elem + " != " + val);