RFR: 8271078: jdk/incubator/vector/Float128VectorTests.java failed a subtest

Fri May 13 02:27:13 UTC 2022

This test was failing because the safepoint polling stub was only saving the low 8 bytes of XMM16-XMM31.  We need to save all 16 bytes by default.  I also added "wide" to the boolean parameter name to better reflect what it controls.  And I made the asserts in save_live_registers() match what we have in restore_live_registers().

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Commit messages:
 - save 16-byte vectors

Changes: https://git.openjdk.java.net/jdk/pull/8690/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8690&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8271078
  Stats: 27 lines in 1 file changed: 1 ins; 1 del; 25 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8690.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8690/head:pull/8690

PR: https://git.openjdk.java.net/jdk/pull/8690