Port 7f654693

Original Commit Message:

    Implement f32x4 and f64x2 nearest, trunc, ceil, and floor for ia32 and
    x64. arm and arm64 will follow in a future patch, now they just bail out
    into a runtime call.

R=zhin@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: Ida97cc498661a1f87dee95914fc4b7e75e55de80
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2416232Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#69972}