Subzero: Fix register encodings.

Subzero: Fix register encodings.

Specifically, we were ending up with Encoded_Reg_xmm0=0 yet Encoded_Reg_xmm1=10, Encoded_Reg_xmm2=11, etc.

It's a mystery as to why this wasn't triggering any failures with filetype!=asm.

BUG= none
R=jpp@chromium.org

Committed: https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-subzero.git;a=commit;h=728c1d400bbf92053e3a3fcf1292810277844670

[Jim Stichnoth, 2015-07-14 23:33:19]

stichnot@chromium.org changed reviewers:
+ jpp@chromium.org, jvoung@chromium.org

[Jim Stichnoth, 2015-07-14 23:36:35]

https://codereview.chromium.org/1231973003/diff/1/src/IceRegistersX8632.h
File src/IceRegistersX8632.h (right):

https://codereview.chromium.org/1231973003/diff/1/src/IceRegistersX8632.h#new...
src/IceRegistersX8632.h:45: Encoded_##val = encode,
The problem here is that with the original code, you would end up with expanded
lines like:

  Encoded_Reg_xmm1 = Reg_xmm0 + 1,

when you actually want something more like:

  Encoded_Reg_xmm1 = Encoded_Reg_xmm0 + 1,

[John, 2015-07-15 00:33:09]

lgtm

[Jim Stichnoth, 2015-07-15 16:00:15]

Committed patchset #1 (id:1) manually as
728c1d400bbf92053e3a3fcf1292810277844670 (tree was closed).