Contribution of PowerPC port (continuation of 422063005) - PPC dir update

Contribution of PowerPC port (continuation of 422063005) - PPC dir update

Contribution of PowerPC port (continuation of 422063005, 817143002 and 866843003)
This patch brings the ppc directories up to date with our repo. We have
removed 5 individual optimizations which require changes in both the ppc and common
directories so they can be more easily reviewed on their own in subsequent patches.

Subsequent patches will cover:
- individual optimizations for PPC (5)
- remaining AIX changes not resolved by 4.8 compiler (4.8 is only recently available
for AIX)
- incremental updates required to ppc directories due to platform specific changes
made in google repos while we complete the above steps.

With the update there are still some timeouts seen when run in simulated mode which
may be a result of the missing optimizations.  Once we have the optimizations in
we will review the simulation results and address/exclude tests as necessary so that
the simulated runs are clean.

	new file:   src/compiler/ppc/code-generator-ppc.cc
	new file:   src/compiler/ppc/instruction-codes-ppc.h
	new file:   src/compiler/ppc/instruction-selector-ppc.cc
	new file:   src/compiler/ppc/linkage-ppc.cc
	modified:   src/ic/ppc/handler-compiler-ppc.cc
	modified:   src/ic/ppc/ic-compiler-ppc.cc
	modified:   src/ic/ppc/ic-ppc.cc
	modified:   src/ic/ppc/stub-cache-ppc.cc
	modified:   src/ppc/assembler-ppc.cc
	modified:   src/ppc/assembler-ppc.h
	modified:   src/ppc/builtins-ppc.cc
	modified:   src/ppc/code-stubs-ppc.cc
	modified:   src/ppc/code-stubs-ppc.h
	modified:   src/ppc/codegen-ppc.cc
	modified:   src/ppc/constants-ppc.h
	modified:   src/ppc/deoptimizer-ppc.cc
	modified:   src/ppc/disasm-ppc.cc
	modified:   src/ppc/full-codegen-ppc.cc
	modified:   src/ppc/interface-descriptors-ppc.cc
	modified:   src/ppc/lithium-codegen-ppc.cc
	modified:   src/ppc/lithium-codegen-ppc.h
	modified:   src/ppc/lithium-ppc.cc
	modified:   src/ppc/lithium-ppc.h
	modified:   src/ppc/macro-assembler-ppc.cc
	modified:   src/ppc/macro-assembler-ppc.h
	modified:   src/ppc/regexp-macro-assembler-ppc.cc
	modified:   src/ppc/regexp-macro-assembler-ppc.h
	modified:   src/ppc/simulator-ppc.cc
	modified:   src/ppc/simulator-ppc.h
	new file:   test/unittests/compiler/ppc/instruction-selector-ppc-unittest.cc

R=danno@chromium.org, svenpanne@chromium.org

BUG=

Committed: https://crrev.com/308d913a92fa2801ad768553aa650227206004c3
Cr-Commit-Position: refs/heads/master@{#26471}

[Sven Panne, 2015-02-05 07:54:28]

LGTM (basically rubber-stamped), but it needs a rebase. Feel free to tick the CQ
box after that.

Nit: s/Compliment/Complement/g, it't nice that the instructions try to be
polite, but... :-D

[michael_dawson, 2015-02-05 18:26:10]

New patchsets have been uploaded after l-g-t-m from svenpanne@chromium.org

[michael_dawson, 2015-02-05 18:39:09]

The CQ bit was checked by michael_dawson@ca.ibm.com

[commit-bot: I haz the power, 2015-02-05 18:39:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/901083004/20001

[commit-bot: I haz the power, 2015-02-05 19:02:00]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-02-05 19:02:17]

Patchset 2 (id:??) landed as
https://crrev.com/308d913a92fa2801ad768553aa650227206004c3
Cr-Commit-Position: refs/heads/master@{#26471}