[8u] RFR 8166140: C1: Possible integer overflow in LIRGenerator::generate_address on several platforms

[Zhengyu Gu]

I would like to backport this patch to 8u for parity with Oracle 8u331.

Bug: https://bugs.openjdk.java.net/browse/JDK-8166140
Patch: http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/f6c1ea29110e

The patch applies mostly cleanly, except ppc does not have compiler port 
in 8u.

8u webrev: http://cr.openjdk.java.net/~zgu/JDK-8166140-8u/webrev.00/

Test:
   compiler tests on Linux x86_64 and aarch64

Thanks,

-Zhengyu