RFR: 8301838: PPC: continuation yield intrinsic: exception check not needed if yield succeeded [v2]

[Richard Reingruber]

On Wed, 8 Feb 2023 09:16:23 GMT, Richard Reingruber <rrich at openjdk.org> wrote:

>> Richard Reingruber has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - freeze(JavaThread* current, intptr_t* sp) returns int, so use 32bit compare
>>  - Remove duplicated return sequence as Lutz suggested
>
> src/hotspot/cpu/ppc/sharedRuntime_ppc.cpp line 1983:
> 
>> 1981:   Label L_pinned;
>> 1982: 
>> 1983:   __ cmpwi(CCR0, R3_RET, 0);
> 
> Since I'm at it: the call above returns `int` so it is better to use a 32bit compare.

@RealLucy please note this change.

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PR: https://git.openjdk.org/jdk/pull/12450