yzhang [Wed, 28 Nov 2018 16:22:03 +0800] rev 53052
8213134: AArch64: vector shift failed with MaxVectorSize=8
Summary: add vshiftcnt instructions for vector64 and add vsra/vsrl instructions to AArch64 backend. To detect shift failures, MaxVectorSize options are added to jtreg test cases.
Reviewed-by: aph, kvn