ARM64: Use templates for simulated memory accesses.

ARM64: Use templates for simulated memory accesses.

This cleans up the memory interface somewhat, and also avoids a memcpy
call that the compiler can't optimise away.

BUG=
R=bmeurer@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=23640

[jbramley, 2014-09-03 10:51:26]

jacob.bramley@arm.com changed reviewers:
+ bmeurer@google.com, ulan@chromium.org

[jbramley, 2014-09-03 10:51:26]

https://codereview.chromium.org/536923002/diff/1/src/arm64/simulator-arm64.cc
File src/arm64/simulator-arm64.cc (right):

https://codereview.chromium.org/536923002/diff/1/src/arm64/simulator-arm64.cc...
src/arm64/simulator-arm64.cc:1503: case STR_d:   MemoryWrite<double>(address,
dreg(srcdst)); break;
`git cl format` doesn't like these one-line cases. I think it looks much tidier
this way. Should I follow git-cl-format strictly, or override it to allow
one-line cases?

[jbramley, 2014-09-03 10:52:08]

jacob.bramley@arm.com changed reviewers:
+ bmeurer@chromium.org
- bmeurer@google.com

[Benedikt Meurer, 2014-09-03 10:52:38]

I think it's OK for this case. LGTM

[jbramley, 2014-09-03 11:11:42]

Committed patchset #1 manually as 23640 (presubmit successful).