OpenJDK / jdk / jdk
changeset 41362:e09e871860a7
8154122: Intrinsify fused mac operations
Summary: added FMA intrinsics on x86
Reviewed-by: kvn, aph, darcy
| author | vdeshpande |
|---|---|
| date | Fri, 26 Aug 2016 12:20:09 -0700 |
| parents | a2d5b18586fa |
| children | 95fce77ec1b6 |
| files | jdk/src/java.base/share/classes/java/lang/Math.java jdk/test/java/lang/Math/FusedMultiplyAddTests.java |
| diffstat | 2 files changed, 8 insertions(+), 2 deletions(-) [+] |
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--- a/jdk/src/java.base/share/classes/java/lang/Math.java Tue Aug 30 09:30:07 2016 +0200 +++ b/jdk/src/java.base/share/classes/java/lang/Math.java Fri Aug 26 12:20:09 2016 -0700 @@ -1626,7 +1626,7 @@ * * @since 9 */ - // @HotSpotIntrinsicCandidate + @HotSpotIntrinsicCandidate public static double fma(double a, double b, double c) { /* * Infinity and NaN arithmetic is not quite the same with two @@ -1743,7 +1743,7 @@ * * @since 9 */ - // @HotSpotIntrinsicCandidate + @HotSpotIntrinsicCandidate public static float fma(float a, float b, float c) { /* * Since the double format has more than twice the precision
--- a/jdk/test/java/lang/Math/FusedMultiplyAddTests.java Tue Aug 30 09:30:07 2016 +0200 +++ b/jdk/test/java/lang/Math/FusedMultiplyAddTests.java Fri Aug 26 12:20:09 2016 -0700 @@ -221,6 +221,9 @@ {Double.MIN_VALUE, -0.0, +0.0, +0.0}, + + {1.0+Math.ulp(1.0), 1.0+Math.ulp(1.0), -1.0-2.0*Math.ulp(1.0), + Math.ulp(1.0)*Math.ulp(1.0)}, }; for (double[] testCase: testCases) @@ -344,6 +347,9 @@ {Float.MAX_VALUE, 2.0f, 1.0f, InfinityF}, + + {1.0f+Math.ulp(1.0f), 1.0f+Math.ulp(1.0f), -1.0f-2.0f*Math.ulp(1.0f), + Math.ulp(1.0f)*Math.ulp(1.0f)}, }; for (float[] testCase: testCases)