This fixes three issues related to Thumb literal loads:

1. The offset range for Thumb1 PC relative loads is [0..1020] and not [-1024..1020]
2. Thumb2 PC relative loads may define the PC, so the restriction placed on target register is removed
3. Removes unneeded alias between "ldr.n" and t1LDRpci. ".n" is actually stripped by both tablegen
and the ASM parser, so this alias rule really does nothing

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188466 91177308-0d34-0410-b5e6-96231b3b80d8

Conflicts:

	test/MC/ARM/thumb-diagnostics.s

Change-Id: Iee7066b2d2a3839be6c5618ee26805c25208e178
Drive-by fix for a doxygen comment in MachineInstr.h.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188467 91177308-0d34-0410-b5e6-96231b3b80d8
Constify the function parameters.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188469 91177308-0d34-0410-b5e6-96231b3b80d8
DataFlowSanitizer: Add a debugging feature to help us track nonzero labels.

Summary:
When the -dfsan-debug-nonzero-labels parameter is supplied, the code
is instrumented such that when a call parameter, return value or load
produces a nonzero label, the function __dfsan_nonzero_label is called.
The idea is that a debugger breakpoint can be set on this function
in a nominally label-free program to help identify any bugs in the
instrumentation pass causing labels to be introduced.

Reviewers: eugenis

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1405

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188472 91177308-0d34-0410-b5e6-96231b3b80d8
Use a reference instead of making an unnecessary copy. Also use 'const'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188483 91177308-0d34-0410-b5e6-96231b3b80d8
Make a few more things const.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188484 91177308-0d34-0410-b5e6-96231b3b80d8
make arm-reserve-r9 available for all ARM

r9 is defined as a platform-specific register in the ARM EABI.
It can be reserved for a special purpose or be used as a general
purpose register. Add support for reserving r9 for all ARM, while
leaving the IOS usage unchanged.

Patch by Jeroen Hofstee.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188485 91177308-0d34-0410-b5e6-96231b3b80d8
make arm-use-movt available for all ARM

Before this patch this flag is IOS specific, but is also
useful for bare project like bootloaders / kernels etc,
since movw / movt prevents simple relocation. Therefore
make this flag more commonly available.

note: this patch depends on a similiar rename in clang

Patch by Jeroen Hofstee.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188487 91177308-0d34-0410-b5e6-96231b3b80d8
Fixing a corner-case bug in strchr and strrchr lib call optimizations where
the input character is not converted to char before comparing with zero.

The patch was discussed in this thread:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20130812/184069.html

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188489 91177308-0d34-0410-b5e6-96231b3b80d8
Support X86_64_GOTLoad relocations in RuntimeDyldMachO by treating them the
same way as X86_64_GOT relocations. The 'Load' part of GOTLoad is just an
optimization hint for the linker anyway, and can be safely ignored.

This patch also fixes some minor issues with the relocations introduced while
processing an X86_64_GOT[Load]: the addend for the GOT entry should always be
zero, and the addend for the replacement relocation at the original offset
should be the same as the addend of the relocation being replaced.

I haven't come up with a good way of testing this yet, but I'm working on it.

This fixes <rdar://problem/14651564>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188499 91177308-0d34-0410-b5e6-96231b3b80d8
[lit] Remove some done TODOs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188502 91177308-0d34-0410-b5e6-96231b3b80d8
[tests] Fix refacto in r187764 that effectively disabled SimplifyCFG tests. :(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188503 91177308-0d34-0410-b5e6-96231b3b80d8
Fix spelling

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188506 91177308-0d34-0410-b5e6-96231b3b80d8
Don't do FoldCmpLoadFromIndexedGlobal for non inbounds GEPs

This path wasn't tested before without a datalayout,
so add some more tests and re-run with and without one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188507 91177308-0d34-0410-b5e6-96231b3b80d8
Tighten up the yamilizer so it stops eliding empty sequences if the embedded empty sequence is the first key/value in a map which is itself in a sequence.

Patch with help from Nick Kledzik.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188508 91177308-0d34-0410-b5e6-96231b3b80d8
CMake: polish the Windows packaging rules

This tweaks the CMake rules for building an installation package on Windows:
 - Sets license file (otherwise nsis shows an ugly default)
 - Adds LLVM logo
 - Shows "do you want to add this to the system path" dialog.

Differential Revision: http://llvm-reviews.chandlerc.com/D1414

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188509 91177308-0d34-0410-b5e6-96231b3b80d8
InstCombine: Simplify if(x!=0 && x!=-1).

When both constants are positive or both constants are negative,
InstCombine already simplifies comparisons like this, but when
it's exactly zero and -1, the operand sorting ends up reversed
and the pattern fails to match. Handle that special case.

Follow up for rdar://14689217

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188512 91177308-0d34-0410-b5e6-96231b3b80d8
[tests] Cleanup initialization of test suffixes.

 - Instead of setting the suffixes in a bunch of places, just set one master
   list in the top-level config. We now only modify the suffix list in a few
   suites that have one particular unique suffix (.ml, .mc, .yaml, .td, .py).

 - Aside from removing the need for a bunch of lit.local.cfg files, this enables
   4 tests that were inadvertently being skipped (one in
   Transforms/BranchFolding, a .s file each in DebugInfo/AArch64 and
   CodeGen/PowerPC, and one in CodeGen/SI which is now failing and has been
   XFAILED).

 - This commit also fixes a bunch of config files to use config.root instead of
   older copy-pasted code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188513 91177308-0d34-0410-b5e6-96231b3b80d8

Conflicts:

	test/lit.cfg

Change-Id: I108141edb663888d90aa897881878a61ccf8ffbd