Intel has updated their retpoline patches since we created our
original patch.  This CL updates our retpoline changes to match
the latest from Intel.

Bug: None
Test: Tested extensively in ChromeOS.  Built x86 platform & kernel
images in Android.

Change-Id: Id1a18cb1f1f4461832a017cb5c5d59e5400d9d08

This applies the Intel GCC code patches, to allow compiling
with appropriate flags for mitigating the indirect branch variant of
the speculative execution security flaw.

Bug: None
Test: This is already in place in ChromeOS and has been tested on
the ChromeOS kernels.

Change-Id: Ideffb433b697f1fe7e4ca2c1eaa968160abfcc8b

The kernel security team asked us to fix this bug
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46639
This CL does that.

Note: This CL depends on
https://android-review.googlesource.com/329799

Bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46639
Test: Ran build.py for all toolchain versions; used resulting
compilers to build bullhead, angler and fugu plaform images.
Ran checkbuild.py.

Change-Id: I1e1abf594cff56c6ed6dc228a1d084da18c11420

The previous version of the unified GCC compiler (Android & ChromeOS)
caused some ChromeOS tests to fail.  It also caused an Android NDK
test case to fail.  This CL fixes those problems.  In particular it
does the following:

- Fix some file formatting errors from previous unification patch.
- Update ChangeLog files to reflect Android backport patches.
- Find and incorporate a few missing pieces from the following backports
backports from trunk r221007, r221675, r222011, r212011, r214942,
r214957, r215012, r215016, r218115, r218733, r218746, r220491.  This
involved small changes in the following files:

 gcc/cfghoks.c
 gcc/cfgloop.c
 gcc/cfgloop.h
 gcc/except.c
 gcc/loop-init.c
 gcc/omp-low.c

- Fix minor Android test case regression introduced in the previous
unification patch.

Change-Id: I482e3a34e3ed97c7ba609fe2954b4781f02ec617

This CL updates Android's GCC to match ChromeOS's GCC (with
appropriate patches applied in both places to make sure no
cherry-picked changes are lost).

Change-Id: I390140c449b0e5df9ee78a06268319c8c510302f

* changes:
  backport fix for PR65735
  backport patch to fix PR65177
  backport patch to fix PR65048
  backport patch for PR 64878: do not jump thread across more than one back-edge
  port revision 219584 from linaro/gcc-4_9-branch

	PR tree-optimization/65735
	* tree-ssa-threadedge.c (fsm_find_control_statement_thread_paths):
	Remove visited_phis argument, add visited_bbs, avoid recursing into the
	same bb rather than just into the same phi node.
	(thread_through_normal_block): Adjust caller.

	* gcc.c-torture/compile/pr65735.c: New test.

        PR tree-optimization/65177
        * tree-ssa-threadupdate.c (verify_seme): Renamed verify_jump_thread.
        (bb_in_bbs): New.
        (duplicate_seme_region): Renamed duplicate_thread_path.  Redirect all
        edges not adjacent on the path to the original code.

        * gcc.dg/tree-ssa/ssa-dom-thread-10.c: New.

PR tree-optimization/65048
	* tree-ssa-threadupdate.c (valid_jump_thread_path): New.
	(thread_through_all_blocks): Call valid_jump_thread_path.      Remove invalid
	FSM jump-thread paths.

 PR tree-optimization/65048
 * gcc.dg/tree-ssa/ssa-dom-thread-9.c: New.

2015-02-04  Sebastian Pop  <s.pop@samsung.com>
            Brian Rzycki  <b.rzycki@samsung.com>

	PR tree-optimization/64878
	* tree-ssa-threadedge.c: Include tree-ssa-loop.h.
	(fsm_find_control_statement_thread_paths): Add parameter seen_loop_phi.
	Stop recursion at loop phi nodes after having visited a loop phi node.

	* testsuite/gcc.dg/tree-ssa/ssa-dom-thread-8.c: New.