8145438: Guarantee failures since 8144028: Use AArch64 bit-test instructions in C2 Summary: Implement short and long versions of bit test instructions. Reviewed-by: kvn

^build/+
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^dist/+
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^drop/+
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^drop_included/+
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^webrev+
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/nbproject/private/+
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^.hgtip+
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.DS_Store+
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