Fix cctest/test-cpu-profiler/FunctionApplySample fakiness on ARM simulator

Fix cctest/test-cpu-profiler/FunctionApplySample fakiness on ARM simulator

For STM and LDM instuctions with writeback update base register only after all registers have been saved/loaded. This guarantees that invariant sp <= fp is always true when iterating stack in the Sampler.

BUG=v8:2782
R=yangguo@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=15687

[Yang, 2013-07-16 09:03:04]

On 2013/07/15 17:30:16, Yury Semikhatsky wrote:

LGTM.

[yurys, 2013-07-16 09:34:17]

Committed patchset #1 manually as r15687 (presubmit successful).