Trailing whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209608 91177308-0d34-0410-b5e6-96231b3b80d8
Reformat linefeeds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209609 91177308-0d34-0410-b5e6-96231b3b80d8
Just check the entire string.

Thanks to David Blaikie for the suggestion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209610 91177308-0d34-0410-b5e6-96231b3b80d8
DwarfUnit: Remove some misleading no-op code introduced in r204162.

Post commit review feedback from Manman called this out, but it looks
like it slipped through the cracks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209611 91177308-0d34-0410-b5e6-96231b3b80d8
DebugInfo: Test linkonce-odr functions under LTO.

This was previously regressed/broken by r192749 (reverted due to this
issue in r192938) and I was about to break it again by accident with
some more invasive changes that deal with the subprogram lists. So to
avoid that and further issues - here's a test.

It's a pretty basic test - in both r192749 and my impending case, this
test would crash, but checking the basics (that we put a subprogram in
just one of the two CUs) seems like a good start.

We still get this wrong in weird ways if the linkonce-odr function
happens to not be identical in the metadata (because it's defined in two
different files (hence the # line directives in this test), etc) even
though it meets the language requirements (identical token stream) for
such a thing. That results in two subprogram DIEs, but only one of them
gets the parameter and high/low pc information, etc. We probably need to
use the DIRef infrastructure to deduplicate functions as we do types to
address this issue - or perhaps teach the BC linker to remove the
duplicate entries in subprogram lists?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209614 91177308-0d34-0410-b5e6-96231b3b80d8
Make the LoopRotate pass's maximum header size configurable both programmatically
and via the command line, mirroring similar functionality in LoopUnroll.  In
situations where clients used custom unrolling thresholds, their intent could
previously be foiled by LoopRotate having a hardcoded threshold.


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[AArch64] Add a regression test for the load store optimizer.

We have a couple of regression tests for load/store pairing, but (to my knowledge) there are no regression tests for the load/store + add/sub folding.

As a first step towards increased test coverage of this area, this commit adds a test for one instance of a load + add to pre-indexed load transformation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209618 91177308-0d34-0410-b5e6-96231b3b80d8
Remove accidentally committed whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209619 91177308-0d34-0410-b5e6-96231b3b80d8
AArch64: remove empty ARM64 directories from svn.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209621 91177308-0d34-0410-b5e6-96231b3b80d8
[asan] decrease asan-instrumentation-with-call-threshold from 10000 to 7000, see PR17409

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[AArch64] Add more regression tests for the load/store optimization pass.

Cover the following cases:

  ldr X, [x0, #32]
   ...
  add x0, x0, #32
   ->
  ldr X, [x0, #32]!

with X being either w1, x1, s0, d0 or q0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209624 91177308-0d34-0410-b5e6-96231b3b80d8
[AArch64] Add store + add folding regression tests for the load/store optimization pass.

Add tests for the following transform:

 str X, [x0, #32]
  ...
 add x0, x0, #32
  ->
 str X, [x0, #32]!

with X being either w1, x1, s0, d0 or q0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209627 91177308-0d34-0410-b5e6-96231b3b80d8
Convert a few loops to use ranges.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209628 91177308-0d34-0410-b5e6-96231b3b80d8
Some cleanup for r209568.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209634 91177308-0d34-0410-b5e6-96231b3b80d8
AArch64: simplify calling conventions slightly.

We can eliminate the custom C++ code in favour of some TableGen to
check the same things. Functionality should be identical, except for a
buffer overrun that was present in the C++ code and meant webkit
failed if any small argument needed to be passed on the stack.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209636 91177308-0d34-0410-b5e6-96231b3b80d8
AArch64: force i1 to be zero-extended at an ABI boundary.

This commit is debatable. There are two possible approaches, neither
of which is really satisfactory:

1. Use "@foo(i1 zeroext)" to mean an extension to 32-bits on Darwin,
   and 8 bits otherwise.
2. Redefine "@foo(i1)" to mean that the i1 is extended by the caller
   to 8 bits. This goes against the spirit of "zeroext" I think, but
   it's a bit of a vague construct anyway (by definition you're going
   to extend to the amount required by the ABI, that's why it's the
   ABI!).

This implements option 2. The DAG machinery really isn't setup for the
first (there's a fairly strong assumption that "zeroext" goes to at
least the smallest register size), and even if it was the resulting
DAG looks like it would be inferior in many cases.

Theoretically we could add AssertZext nodes in the consumers of
ABI-passed values too now, but this actually seems to make the code
worse in practice by making truncation proceed in two steps. The code
produced is equally valid if we continue to assume only the low bit is
defined.

Should fix PR19850

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209637 91177308-0d34-0410-b5e6-96231b3b80d8
[PPC] Use alias symbols in address computation.

This seems to match what gcc does for ppc and what every other llvm
backend does.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209638 91177308-0d34-0410-b5e6-96231b3b80d8
Use existing helper function.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209639 91177308-0d34-0410-b5e6-96231b3b80d8
Fix link.

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