RFR: 8303147: [s390x] fast & slow debug builds are broken [v3]

[Amit Kumar]

On Tue, 4 Apr 2023 03:42:54 GMT, Amit Kumar <amitkumar at openjdk.org> wrote:

>> This PR fixes broken fast debug and slow debug build for s390x-arch. tier1 test are completed and results are not affect after this patch.
>
> Amit Kumar has updated the pull request incrementally with three additional commits since the last revision:
> 
>  - updates assert condition
>  - Revert "build fix for s390x"
>    
>    This reverts commit bb0ae5d8340b8fd99c4c8d7ab5623739e4d2fa7a.
>  - Revert "use constant instead of enum"
>    
>    This reverts commit 820e288422e86e14323872dbe21550915e28c7e9.

`FrameMap::first_available_sp_in_frame` was non-zero for s390x & PPC, and set to 0 for all other archs. Initially factor was `4` so things were fine but now it changed to `2` which became problematic for us. Now we have modified asserts. 

Thanks to @RealLucy for suggestion & help. 

@TheRealMDoerr or @reinrich would one of you review this PR as well ?

Thanks.

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PR Comment: https://git.openjdk.org/jdk/pull/12825#issuecomment-1495304927