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

[Dean Long]

On Fri, 13 May 2022 02:21:06 GMT, Dean Long <dlong at openjdk.org> wrote:

> 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().

I forgot generate_deopt_blob() wants to save wide vectors unconditionally.  I will revert the assert changes, as it's not critical for this fix.

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