[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206142 91177308-0d34-0410-b5e6-96231b3b80d8
Add back some typecasts I accidentally lost in r206142.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206143 91177308-0d34-0410-b5e6-96231b3b80d8
Use APInt arithmetic, fixed typo. Thanks to Benjamin Kramer for noticing that.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206144 91177308-0d34-0410-b5e6-96231b3b80d8
tools: address possible non-null terminated filenames

If a filename is a multiple of 18 characters, there will be no null-terminator.
This will result in an invalid access by the constructed StringRef.  Add a test
case to exercise this and fix that handling.  Address this same vulnerability in
llvm-readobj as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206145 91177308-0d34-0410-b5e6-96231b3b80d8
tools: simplify symbol handling in objdump

Rather than switching behaviour on whether a previous symbol has an auxiliary
symbol record for the next count of elements, simply iterate over the auxiliary
symbols right after processing the current symbol entry.  This makes the
behaviour much simpler to follow and similar to llvm-readobj and yaml2obj.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206146 91177308-0d34-0410-b5e6-96231b3b80d8
[Allocator] Switch the BumpPtrAllocator to use a vector of pointers to
slabs rather than embedding a singly linked list in the slabs
themselves. This has a few advantages:

- Better utilization of the slab's memory by not wasting 16-bytes at the
  front.
- Simpler allocation strategy by not having a struct packed at the
  front.
- Avoids paging every allocated slab in just to traverse them for
  deallocating or dumping stats.

The latter is the really nice part. Folks have complained from time to
time bitterly that tearing down a BumpPtrAllocator, even if it doesn't
run any destructors, pages in all of the memory allocated. Now it won't.
=]

Also resolves a FIXME with the scaling of the slab sizes. The scaling
now disregards specially sized slabs for allocations larger than the
threshold.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206147 91177308-0d34-0410-b5e6-96231b3b80d8
Fix the compile from r206147 in release builds by moving a variable
declaration outside of #ifndef NDEBUG -- its used elsewhere. Sorry for
the noise.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206148 91177308-0d34-0410-b5e6-96231b3b80d8
[Allocator] Make the underlying allocator a template instead of an
abstract interface. The only user of this functionality is the JIT
memory manager and it is quite happy to have a custom type here. This
removes a virtual function call and a lot of unnecessary abstraction
from the common case where this is just a *very* thin vaneer around
a call to malloc.

Hopefully still no functionality changed here. =]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206149 91177308-0d34-0410-b5e6-96231b3b80d8
Don't assert in BasicTTI::getMemoryOpCost for non-simple types

BasicTTI::getMemoryOpCost must explicitly check for non-simple types; setting
AllowUnknown=true with TLI->getSimpleValueType is not sufficient because, for
example, non-power-of-two vector types return non-simple EVTs (not MVT::Other).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206150 91177308-0d34-0410-b5e6-96231b3b80d8
[cleanup] Normalize YAMLParser.h's doxygen markers with '\foo' instead
of '@foo'. The slash variant is prefered in LLVM and the file was
already using a mixture. =/

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206151 91177308-0d34-0410-b5e6-96231b3b80d8
[Allocator] Hoist the external helper function into a namespace scope
declaration. GCC 4.7 appears to get hopelessly confused by declaring
this function within a member function of a class template. Go figure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206152 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r206045, "Fix shift by constants for vector."

It broke some builders, at least, i686.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206153 91177308-0d34-0410-b5e6-96231b3b80d8
Whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206154 91177308-0d34-0410-b5e6-96231b3b80d8
[XCore] Don't create invalid MKMSK instructions inside loadImmediate().

Summary:
Previously loadImmediate() would produce MKMSK instructions with invalid
immediate values such as mkmsk r0, 9. Fix this by checking the mask size
is valid.

Reviewers: robertlytton

Reviewed By: robertlytton

CC: llvm-commits

Differential Revision: http://reviews.llvm.org/D3289

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206163 91177308-0d34-0410-b5e6-96231b3b80d8
Display the name of the project failing the url check in the release script

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206164 91177308-0d34-0410-b5e6-96231b3b80d8
ARM64: start porting regression test suite from AArch64

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206166 91177308-0d34-0410-b5e6-96231b3b80d8
ARM64: optimise (cmp x, (sub 0, y)) to (cmn x, y).

This transformation is only valid when being used for an EQ or NE
comparison since the flags change otherwise.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206167 91177308-0d34-0410-b5e6-96231b3b80d8
ARM64: add support for AArch64's addsub_ext.ll

There was one definite issue in ARM64 (the off-by-1 check for whether
a shift could be folded in) and one difference that is probably
correct: ARM64 didn't fold nodes with multiple uses into the
arithmetic operations unless optimising for code size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206168 91177308-0d34-0410-b5e6-96231b3b80d8
ARM64: enable more regression tests from AArch64

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206169 91177308-0d34-0410-b5e6-96231b3b80d8
ARM64: add patterns for csXYZ with reversed operands.

AArch64 tests for this, and it's obviously a good idea. Have to invert the
condition code, of course.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206170 91177308-0d34-0410-b5e6-96231b3b80d8