RFR: JDK-8331859 : [PPC64] Remove support for Power7 and older [v4]

[Suchismith Roy]

On Tue, 29 Apr 2025 14:50:52 GMT, Suchismith Roy <sroy at openjdk.org> wrote:

>> Suchismith Roy has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 27 commits:
>> 
>>  - Merge branch 'openjdk:master' into power8
>>  - mfdscr removal
>>  - indents
>>  - indents
>>  - mcpu flag
>>  - superword
>>  -  further cleanup
>>  - clean of power 7 instructions
>>  - Removal of older P7 Instructions
>>  - Removal of older P7 Instructions
>>  - ... and 17 more: https://git.openjdk.org/jdk/compare/1138a186...4aa520c2
>
> src/hotspot/cpu/ppc/ppc.ad line 10371:
> 
>> 10369:   ins_cost(DEFAULT_COST);
>> 10370: 
>> 10371:   expand %{
> 
> HI @TheRealMDoerr  
> I tried removing moveD2L_reg_stack as it is the only usage in ad file. 
> But the build fails . Any exception to this rule ?

Hi @TheRealMDoerr  could you explain this ?

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PR Review Comment: https://git.openjdk.org/jdk/pull/20262#discussion_r2071552158