RFR: 8343506: [s390x] multiple test failures with ubsan

[Amit Kumar]

On Mon, 4 Nov 2024 13:32:30 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

> I think the is_uimm* checks should take an `uint64_t`. See assembler_riscv.inline.hpp.

But aren't `julong` same as `uint64_t` ? 
I saw this in `globalDefinitions.hpp`

// Additional Java basic types

typedef uint8_t  jubyte;
typedef uint16_t jushort;
typedef uint32_t juint;
typedef uint64_t julong;

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PR Comment: https://git.openjdk.org/jdk/pull/21864#issuecomment-2454749491