compiler/vectorization/TestFloat16VectorConvChain.java fails with non-standard AVX/SSE settings

The test fails with -XX:UseAVX=0 -XX:UseSSE=3

Failed IR Rules (1) of Methods (1)
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1) Method "public static void compiler.vectorization.TestFloat16VectorConvChain.test(short[],short[],short[])" - [Failed IR rules: 1]:
   * @IR rule 1: "@compiler.lib.ir_framework.IR(phase={DEFAULT}, applyIfPlatformAnd={}, applyIfCPUFeatureOr={}, counts={"_#V#VECTOR_CAST_HF2F#_", "_@any", ">= 1", "_#V#VECTOR_CAST_F2HF#_", "_@any", " >= 1"}, applyIfPlatform={}, failOn={}, applyIfPlatformOr={}, applyIfOr={}, applyIfCPUFeatureAnd={}, applyIf={}, applyIfCPUFeature={}, applyIfAnd={}, applyIfNot={})"
     > Phase "PrintIdeal":
       - counts: Graph contains wrong number of nodes:
         * Constraint 1: "(\\d+(\\s){2}(VectorCastHF2F.*)+(\\s){2}===.*vector[A-Za-z]\\[\\d+\\]:\\{float\\})"
           - Failed comparison: [found] 0 >= 1 [given]
           - No nodes matched!
         * Constraint 2: "(\\d+(\\s){2}(VectorCastF2HF.*)+(\\s){2}===.*vector[A-Za-z]\\[\\d+\\]:\\{short\\})"
           - Failed comparison: [found] 0 >= 1 [given]
           - No nodes matched!