tree a78f800c9aebe0f91574eed06931e9b94f4ce8a5
parent cac003e8f33c970e233e4f9194930b7869f0b65a
author Jan Voung <jvoung@chromium.org> 1434664814 -0700
committer Jan Voung <jvoung@chromium.org> 1434664814 -0700

ARM: Assign "actuals" at call site to the appropriate GPR/stack slot.

Actually assign arguments to r0-r3 at the call site. Previously
this was left unhandled. There was only logic for pulling
formal parameters out of r0-r3.

Refactor the GPR counter and move it into a class so that the
rounding up for i64 arguments is in one place for callsites
and for pulling out of parameters. We might be able to use a
similar pattern to count the FP/SIMD registers later.

BUG= https://code.google.com/p/nativeclient/issues/detail?id=4076
R=stichnot@chromium.org

Review URL: https://codereview.chromium.org/1187513006.