> The vector `"test"` api is implemented with vector `"compare"`. And the > masked `"test" `is implemented with `"test(op).and(m)"` which means > `"compare().and(m)"` finally. Since the masked vector `"compare"` has been > optimized with predicated instruction for archituctures that support the > feature, the masked `"test"` can also be optimized by implementing it with > the predicated compare. This could save the additional ` "and"` for > architectures that support the predicate feature. > > This patch optimized the masked `"test"` by implementing it with masked > `"compare"`. With this patch, the following codes for the` "IS_NEGATIVE"` op > for a DoubleVector with SVE: > > mov z19.d, #0 > cmpgt p1.d, p7/z, z19.d, z17.d > and p0.b, p7/z, p1.b, p0.b > > are optimized to: > > mov z19.d, #0 > cmpgt p0.d, p0/z, z19.d, z17.d > > Also update the jtreg tests for masked` "test" ` to make sure they are hot > enough to be compiled by c2.
Xiaohong Gong has updated the pull request incrementally with one additional commit since the last revision: Simply the testTemplate ------------- Changes: - all: https://git.openjdk.java.net/jdk/pull/7654/files - new: https://git.openjdk.java.net/jdk/pull/7654/files/41a9d56f..c90d2f49 Webrevs: - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7654&range=01 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7654&range=00-01 Stats: 197 lines in 49 files changed: 13 ins; 33 del; 151 mod Patch: https://git.openjdk.java.net/jdk/pull/7654.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/7654/head:pull/7654 PR: https://git.openjdk.java.net/jdk/pull/7654
