tree 38738817f9cc8764dae05bf7058b0ff8a59ad70e
parent 130aca718ed16be20e616e591a53de1d69f00d12
author Nicolas Capens <capn@google.com> 1477668290 -0400
committer Nicolas Capens <nicolascapens@google.com> 1477681528 +0000

Preserve rsi and rdi when using Microsoft x86-64 calling convention.

Also, their priority is lowered so that registers which are scratch on both
Unix and Windows are preferred by the register allocator.

BUG=swiftshader:22

Change-Id: Id55d8c8b8c106947e3041a082099069d7c6c6ed0
Reviewed-on: https://chromium-review.googlesource.com/404503
Reviewed-by: Jim Stichnoth <stichnot@chromium.org>
Tested-by: Jim Stichnoth <stichnot@chromium.org>