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

[Suchismith Roy]

On Thu, 17 Apr 2025 16:29:50 GMT, Martin Doerr <mdoerr 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 10410:
> 
>> 10408: 
>> 10409: // Float to Int conversion, NaN is mapped to 0.
>> 10410: instruct convF2I_regF_ExEx(iRegIdst dst, regF src) %{
> 
> This instruct should be completely removed.

@TheRealMDoerr  There is expand after the instruction..so should it be completely removed ?

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PR Review Comment: https://git.openjdk.org/jdk/pull/20262#discussion_r2052103227