RFR: 8266950: Remove vestigial support for non-strict floating-point execution [v5]

[Vladimir Ivanov]

On Sun, 23 May 2021 23:14:08 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> As part of JEP 306, the vestiges of HotSpot support for non-strict floating-point execution can be removed. All methods implicitly have strictfp semantics so the explicit checks for is_strict() can be replaced by true and the code reformulated accordingly.
>> 
>> There are still some names that include "strict" that could potentially be renamed to remove it, but the fact we have to have strict fp semantics is still important on some platforms, so the names help reinforce that IMO.
>> 
>> Testing: tiers 1-3
>> 
>> Thanks,
>> David
>
> David Holmes has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains seven additional commits since the last revision:
> 
>  - Merge branch 'master' into jep-306
>  - The code for strict handling only applies to doubles.
>  - Add missing space
>  - lir_div_strictfp and lir_mul_strictfp
>  - Removed divDPR_reg_round as it has a false predicate and so is now unused
>  - Revert classFileParser changes as they will be handled by JDK-8266530
>  - 8266530: HotSpot changes for JEP 306
>    All methods are now implicitly strictfp so all code generation etc
>    uses the strict form.
>    There are still some names that include "strict" that could potentially
>    be renamed to rmeove it, but the fact we have to have strict fp semantics
>    is still important on some platforms, so the names help reinforce that IMO.

Marked as reviewed by vlivanov (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/3991