diff --git a/test/hotspot/jtreg/compiler/c2/irTests/TestPhiDuplicatedConversion.java b/test/hotspot/jtreg/compiler/c2/irTests/TestPhiDuplicatedConversion.java
index 947d678a4f2..359b42f0fa2 100644
--- a/test/hotspot/jtreg/compiler/c2/irTests/TestPhiDuplicatedConversion.java
+++ b/test/hotspot/jtreg/compiler/c2/irTests/TestPhiDuplicatedConversion.java
@@ -114,13 +114,13 @@ public class TestPhiDuplicatedConversion {
     }
 
     @Test
-    @IR(counts = {IRNode.CONV, "1"}, applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"})
+    @IR(counts = {IRNode.CONV, "1"}, applyIfCPUFeatureOr = {"f16c", "true", "avx512vl", "true", "asimd", "true"})
     public static short float2HalfFloat(boolean c, float a, float b) {
         return c ? Float.floatToFloat16(a) : Float.floatToFloat16(b);
     }
 
     @Test
-    @IR(counts = {IRNode.CONV, "1"}, applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"})
+    @IR(counts = {IRNode.CONV, "1"}, applyIfCPUFeatureOr = {"f16c", "true", "avx512vl", "true", "asimd", "true"})
     public static float halfFloat2Float(boolean c, short a, short b) {
         return c ? Float.float16ToFloat(a) : Float.float16ToFloat(b);
     }
diff --git a/test/hotspot/jtreg/compiler/lib/ir_framework/test/IREncodingPrinter.java b/test/hotspot/jtreg/compiler/lib/ir_framework/test/IREncodingPrinter.java
index dd22eb6ba91..00698903482 100644
--- a/test/hotspot/jtreg/compiler/lib/ir_framework/test/IREncodingPrinter.java
+++ b/test/hotspot/jtreg/compiler/lib/ir_framework/test/IREncodingPrinter.java
@@ -83,6 +83,7 @@ public class IREncodingPrinter {
     private static final List<String> verifiedCPUFeatures = new ArrayList<String>( Arrays.asList(
         // x86
         "fma",
+        "f16c",
         // Intel SSE
         "sse",
         "sse2",