RFR: 8279508: Auto-vectorize Math.round API [v11]

[Jatin Bhateja]

On Sun, 6 Mar 2022 09:31:27 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> Jatin Bhateja has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   8279508: Removing +LogCompilation flag.
>
> src/hotspot/cpu/x86/c2_MacroAssembler_x86.cpp line 4157:
> 
>> 4155:   ExternalAddress mxcsr_std(StubRoutines::x86::addr_mxcsr_std());
>> 4156:   ldmxcsr(new_mxcsr);
>> 4157:   movl(scratch, 1056964608);
> 
> What is 1056964608 ?

Raw bits corresponding to floating point value 0.5f.

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PR: https://git.openjdk.java.net/jdk/pull/7094