tree 8e12788c5595994a1b3f5ad6e3e12e522a53f76f
parent 0121953a107817b76c12fc650f33667086e997a0
author David Benjamin <davidben@google.com> 1501017007 -0400
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1501103283 +0000

Detect if the kernel preserves %zmm registers.

Also clear AVX512 bits if %xmm and %ymm registers are not preserved. See
also upstream's 66bee01c822c5dd26679cad076c52b3d81199668.

Change-Id: I1bcaf4cf355e3ca0adb5d207ae6185f9b49c0245
Reviewed-on: https://boringssl-review.googlesource.com/18410
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>