Integrated: 8285868: x86 intrinsics for floating point method isInfinite

[Srinivas Vamsi Parasa]

On Thu, 28 Apr 2022 23:02:47 GMT, Srinivas Vamsi Parasa <duke at openjdk.java.net> wrote:

> We develop optimized x86 intrinsics for the floating point class check methods `isNaN()`, `isFinite()` and `IsInfinite()` for Float and Double classes. JMH benchmarks show upto `~70% `improvement using` vfpclasss(s/d)` instructions.
> 
> 
> Benchmark (ns/op)	        Baseline Intrinsic(vfpclasss/d)	Speedup(%)
> FloatClassCheck.testIsFinite	0.562	          0.406	         28%
> FloatClassCheck.testIsInfinite	0.815	          0.383	         53%
> FloatClassCheck.testIsNaN	0.63	          0.382	         39%
> DoubleClassCheck.testIsFinite	0.565	          0.409	         28%
> DoubleClassCheck.testIsInfinite	0.812	          0.375	         54%
> DoubleClassCheck.testIsNaN	0.631	          0.38	         40%
> FPComparison.isFiniteDouble	332.638	          272.577	 18%
> FPComparison.isFiniteFloat	413.217	          331.825	 20%
> FPComparison.isInfiniteDouble	874.897	          240.632	 72%
> FPComparison.isInfiniteFloat	872.279	          321.269	 63%
> FPComparison.isNanDouble	286.566	          240.36	 16%
> FPComparison.isNanFloat	        346.123	          316.923	  8%

This pull request has now been integrated.

Changeset: 7f44f572
Author:    vamsi-parasa <srinivas.vamsi.parasa at intel.com>
Committer: Jatin Bhateja <jbhateja at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/7f44f572ea451a1f38b446a6ef64ffb27e3eb3fe
Stats:     513 lines in 18 files changed: 513 ins; 0 del; 0 mod

8285868: x86 intrinsics for floating point method isInfinite

Reviewed-by: kvn, jbhateja

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PR: https://git.openjdk.java.net/jdk/pull/8459