RFR (T/XXS) 8225199: [Graal] compiler/jvmci/compilerToVM/IsMatureVsReprofileTest.java fails with -XX:CompileThresholdScaling=0.1

[Ekaterina Pavlova]

Hi,

compiler/jvmci/compilerToVM/IsMatureVsReprofileTest.java started to fail in Graal as JIT mode after switching -Xcomp
testing configuration to -XX:CompileThresholdScaling=0.1 configuration. The test is sensitive to this setting.
As suggested by Vladimir the fix is to return default value for CompileThresholdScaling back by adding -XX:CompileThresholdScaling=1.0 flag.

Please review this tiny fix.

     JBS: https://bugs.openjdk.java.net/browse/JDK-8225199
  webrev: http://cr.openjdk.java.net/~epavlova//8225199/webrev.00/index.html

thanks,
-katya