RFR: 8234324: ARM32 build broken after 8231610

[christoph.goettschkes at microdoc.com]

Hi,

please review the following change, which fixes a compilation issue 
introduce with 8231610.

I already posted the patch on the mailing list, since I wasn't sure if I 
should create a new bug for this or not. Ioi already looked at it [1] and 
pointed out, that we are already using similar checks in HotSpot [2].

Bug: https://bugs.openjdk.java.net/browse/JDK-8234324
Webrev: https://cr.openjdk.java.net/~cgo/8234324/webrev.00/

-- Christoph

[1]
https://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/2019-November/037008.html
[2]
https://hg.openjdk.java.net/jdk/jdk/file/7bdc4f073c7f/src/hotspot/cpu/x86/nativeInst_x86.cpp#l446