RFR: 8295159: DSO created with -ffast-math breaks Java floating-point arithmetic [v11]

[Andrew Haley]

On Thu, 19 Oct 2023 01:26:43 GMT, Joe Darcy <darcy at openjdk.org> wrote:

>> Andrew Haley has updated the pull request incrementally with three additional commits since the last revision:
>> 
>>  - Review feedback
>>  - Merge branch 'JDK-8295159' of https://github.com/theRealAph/jdk into JDK-8295159
>>  - Remove change to RestoreMXCSROnJNICalls
>
> src/hotspot/os/linux/os_linux.cpp line 1853:
> 
>> 1851: 
>> 1852: #ifndef IA32
>> 1853:     // Quickly test to make sure denormals are correctly handled.
> 
> Nit: I recommend using "subnormal" rather than "denormal" for general terminology on this point. While "denormal" was used in the original IEEE 754 standard from 1985, subsequent iterations of the standard using "subnormal" The term "subnormal" has also been used for the last several editions of JLS and JVMS.

I've long avoided "subnormal" because

subnormal in British English, adjective
3.  [old-fashioned, offensive] a person of low intelligence

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PR Review Comment: https://git.openjdk.org/jdk/pull/10661#discussion_r1365207067