Don't relocate with sections if there might be a paired relocation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205240 91177308-0d34-0410-b5e6-96231b3b80d8
R600: Compute masked bits for min and max

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205242 91177308-0d34-0410-b5e6-96231b3b80d8
Add an optional ability to expand larger BUILD_VECTORs with shuffles

This adds the ability to expand large (meaning with more than two unique
defined values) BUILD_VECTOR nodes in terms of SCALAR_TO_VECTOR and (legal)
vector shuffles. There is now no limit of the size we are capable of expanding
this way, although we don't currently do this for vectors with many unique
values because of the default implementation of TLI's
shouldExpandBuildVectorWithShuffles function.

There is currently no functional change to any existing targets because the new
capabilities are not used unless some target overrides the TLI
shouldExpandBuildVectorWithShuffles function. As a result, I've not included a
test case for the new functionality in this commit, but regression tests will
(at least) be added soon when I commit support for the PPC QPX vector
instruction set.

The benefit of committing this now is that it makes the
shouldExpandBuildVectorWithShuffles callback, which had to be added for other
reasons regardless, fully functional. I suspect that other targets will
also benefit from tuning the heuristic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205243 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Implement shouldConvertConstantLoadToIntImm

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205244 91177308-0d34-0410-b5e6-96231b3b80d8
Fix MSVC warning.

This patch is to fix the following warning when compiled with MSVC 64 bit.

  warning C4334: '<<' : result of 32-bit shift implicitly converted to 64
  bits (was 64-bit shift intended?)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205245 91177308-0d34-0410-b5e6-96231b3b80d8
Change shouldSplitVectorElementType to better match the description.

Pass the entire vector type, and not just the element.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205247 91177308-0d34-0410-b5e6-96231b3b80d8
Register allocator: set CSRFirstUseCost to 5 for ARM64.

A value of 5 means if we have a split or spill option that has a really
low cost (1 << 14 is the entry frequency), we will choose to spill
or split the really cold path before using a callee-saved register.

This gives us the performance benefit on SPECInt2k and is also conservative.

rdar://16162005


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205248 91177308-0d34-0410-b5e6-96231b3b80d8
R600/SI: Remove leftover pattern splitting 64-bit ors.

It's now matched to the scalar 64-bit or and split later if
necessary.'

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205252 91177308-0d34-0410-b5e6-96231b3b80d8
[X86] Adjust cost of FP_TO_UINT v4f64->v4i32 as well

Pretty obvious follow-on to r205159 to also handle conversion from double
besides float.

Fixes <rdar://problem/16373208>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205253 91177308-0d34-0410-b5e6-96231b3b80d8
[Stackmaps] Update the stackmap format to use 64-bit relocations for the function address and properly align all entries.

This commit updates the stackmap format to version 1 to indicate the
reorganizaion of several fields. This was done in order to align stackmap
entries to their natural alignment and to minimize padding.

Fixes <rdar://problem/16005902>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205254 91177308-0d34-0410-b5e6-96231b3b80d8
Shifting into the sign bit is UB as discussed on IRC. Explicitly use the
BitWord type for the constants to avoid this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205257 91177308-0d34-0410-b5e6-96231b3b80d8
Revert "SLPVectorizer: Ignore users that are insertelements we can reschedule them"

This reverts commit r205018.

Conflicts:
	lib/Transforms/Vectorize/SLPVectorizer.cpp
	test/Transforms/SLPVectorizer/X86/insert-element-build-vector.ll

This is breaking libclc build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205260 91177308-0d34-0410-b5e6-96231b3b80d8
lit: Set a base directory for compiler-rt tests

Setting this parameter enables llvm-lit to run on source directories for
compiler-rt test suites that implement magic in their lit.cfg.

<rdar://problem/16458307>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205262 91177308-0d34-0410-b5e6-96231b3b80d8
Move partial/runtime unrolling late in the pipeline

The generic (concatenation) loop unroller is currently placed early in the
standard optimization pipeline. This is a good place to perform full unrolling,
but not the right place to perform partial/runtime unrolling. However, most
targets don't enable partial/runtime unrolling, so this never mattered.

However, even some x86 cores benefit from partial/runtime unrolling of very
small loops, and follow-up commits will enable this. First, we need to move
partial/runtime unrolling late in the optimization pipeline (importantly, this
is after SLP and loop vectorization, as vectorization can drastically change
the size of a loop), while keeping the full unrolling where it is now. This
change does just that.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205264 91177308-0d34-0410-b5e6-96231b3b80d8
MCJIT: ensure that cygwin is identified properly

Cygwin is now a proper environment rather than an OS.  This updates the MCJIT
tests to avoid execution on Cygwin.  This fixes native cygwin tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205266 91177308-0d34-0410-b5e6-96231b3b80d8
Comment to describe the debug_loc.dwo constants

Code review feedback from Eric Christopher on r204697

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205268 91177308-0d34-0410-b5e6-96231b3b80d8
Add a comment about type-uniquing ObjC types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205277 91177308-0d34-0410-b5e6-96231b3b80d8
LTO type uniquing: store the Decl field of a DIImportedEntity as a DIRef.
No other functionality changes, DIBuilder testcase is included in a paired
CFE commit.

This relaxes the assertion in isScopeRef to also accept subclasses of
DIScope.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205279 91177308-0d34-0410-b5e6-96231b3b80d8
Remove FIXMEs. The scope of a Variable is always a lexical scope; there is
nothing to be gained from switching this over to a DIScopeRef.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205281 91177308-0d34-0410-b5e6-96231b3b80d8
DebugInfo: Emit relocation to debug_line section when emitting asm for asm

I don't think this is reachable by any frontend (why would you transform
asm to asm+debug info?) but it helps tidy up some of this code, avoid
the weird special case of "emit the first CU, store the label, then emit
the rest" in MCDwarfLineTable::Emit by instead having the
DWARF-for-assembly case use the same codepath as DwarfDebug.cpp, by
registering the label of the debug_line section, thus causing it to be
emitted. (with a special case in asm output to just emit the label since
asm output uses the .loc directives, etc, rather than the debug_loc
directly)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205286 91177308-0d34-0410-b5e6-96231b3b80d8