> This patch optimizes the following patterns: > For integer types: > > (XorV (VectorMaskCmp src1 src2 cond) (Replicate -1)) > => (VectorMaskCmp src1 src2 ncond) > (XorVMask (VectorMaskCmp src1 src2 cond) (MaskAll m1)) > => (VectorMaskCmp src1 src2 ncond) > > cond can be eq, ne, le, ge, lt, gt, ule, uge, ult and ugt, ncond is the > negative comparison of cond. > > For float and double types: > > (XorV (VectorMaskCast (VectorMaskCmp src1 src2 cond)) (Replicate -1)) > => (VectorMaskCast (VectorMaskCmp src1 src2 ncond)) > (XorVMask (VectorMaskCast (VectorMaskCmp src1 src2 cond)) (MaskAll m1)) > => (VectorMaskCast (VectorMaskCmp src1 src2 ncond)) > > cond can be eq or ne. > > Benchmarks on Nvidia Grace machine with 128-bit SVE2: With option > `-XX:UseSVE=2`: > > Benchmark Unit Before Score Error After > Score Error Uplift > testCompareEQMaskNotByte ops/s 7912127.225 2677.289518 > 10266136.26 8955.008548 1.29 > testCompareEQMaskNotDouble ops/s 884737.6799 446.963779 > 1179760.772 448.031844 1.33 > testCompareEQMaskNotFloat ops/s 1765045.787 682.332214 > 2359520.803 896.305743 1.33 > testCompareEQMaskNotInt ops/s 1787221.411 977.743935 > 2353952.519 960.069976 1.31 > testCompareEQMaskNotLong ops/s 895297.1974 673.44808 > 1178449.02 323.804205 1.31 > testCompareEQMaskNotShort ops/s 3339987.002 3415.2226 > 4712761.965 2110.862053 1.41 > testCompareGEMaskNotByte ops/s 7907615.16 4094.243652 > 10251646.9 9486.699831 1.29 > testCompareGEMaskNotInt ops/s 1683738.958 4233.813092 > 2352855.205 1251.952546 1.39 > testCompareGEMaskNotLong ops/s 854496.1561 8594.598885 > 1177811.493 521.1229 1.37 > testCompareGEMaskNotShort ops/s 3341860.309 1578.975338 > 4714008.434 1681.10365 1.41 > testCompareGTMaskNotByte ops/s 7910823.674 2993.367032 > 10245063.58 9774.75138 1.29 > testCompareGTMaskNotInt ops/s 1673393.928 3153.099431 > 2353654.521 1190.848583 1.4 > testCompareGTMaskNotLong ops/s 849405.9159 2432.858159 > 1177952.041 359.96413 1.38 > testCompareGTMaskNotShort ops/s 3339509.141 3339.976585 > 4711442.496 2673.364893 1.41 > testCompareLEMaskNotByte ops/s 7911340.004 3114.69191 > 10231626.5 27134.20035 1.29 > testCompareLEMaskNotInt ops/s 1675812.113 1340.969885 > 2353255.341 1452.4522 1.4 > testCompareLEMaskNotLong ops/s 848862.8036 6564.841731 > 1177763.623 539.290106 1.38 > testCompareLEMaskNotShort ops/s 3324951.54 2380.29473 > 4712116.251 1544.559684 1.41 > testCompareLTMaskNotByte ops/s 7910390.844 2630.861436 > 10239567.69 6487.441672 1.29 > testCompareLTMaskNotInt ops/s 1672180.09 995.238142 > 2353757.863 853.774734 1.4 > testCompareLTMaskNotLong ops/s 856502.26...
erifan has updated the pull request incrementally with one additional commit since the last revision: Support negating unsigned comparison for BoolTest::mask Added a static method `negate_mask(mask btm)` into BoolTest class to negate both signed and unsigned comparison. ------------- Changes: - all: https://git.openjdk.org/jdk/pull/24674/files - new: https://git.openjdk.org/jdk/pull/24674/files/ebbcc405..f51bf722 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=24674&range=07 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24674&range=06-07 Stats: 6 lines in 3 files changed: 2 ins; 3 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/24674.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/24674/head:pull/24674 PR: https://git.openjdk.org/jdk/pull/24674
