Disable profiling tests for Hexagon since it doesn't support JIT.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177917 91177308-0d34-0410-b5e6-96231b3b80d8
Couple more sets of tidying.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177920 91177308-0d34-0410-b5e6-96231b3b80d8
Add an optimizer-side test case for ARC bug <rdar://13195034>, fixed
in the frontend with @clang.arc.use.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177928 91177308-0d34-0410-b5e6-96231b3b80d8
Disable some unsafe-fp-math DAG-combine transformation after legalization.
For instance, following transformation will be disabled:
    x + x + x => 3.0f * x;

The problem of these transformations is that it introduces a FP constant, which
following Instruction-Selection pass cannot handle.

Reviewed by Nadav, thanks a lot!

rdar://13445387


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177933 91177308-0d34-0410-b5e6-96231b3b80d8
Annotate shifts and rotates with SchedRW lists.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177935 91177308-0d34-0410-b5e6-96231b3b80d8
Annotate X86InstrCompiler.td with SchedRW lists.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177936 91177308-0d34-0410-b5e6-96231b3b80d8
Remove IIC_DEFAULT from X86Schedule.td

All the instructions tagged with IIC_DEFAULT had nothing in common, and
we already have a NoItineraries class to represent untagged
instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177937 91177308-0d34-0410-b5e6-96231b3b80d8
Introduce a tiny CMake project to gather Subversion revision information and place it into a header.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177938 91177308-0d34-0410-b5e6-96231b3b80d8
Add a scheduling model for Intel Sandy Bridge microarchitecture.

The model isn't hooked up by this patch because the instruction set
isn't fully annotated yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177942 91177308-0d34-0410-b5e6-96231b3b80d8
Add an -mcpu option to a test that is apparently scheduler-sensitive.

This should fix the clang-atom-d2700-ubuntu-rel buildbot.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177943 91177308-0d34-0410-b5e6-96231b3b80d8
Enhance folding of (extract_subvec (insert_subvec V1, V2, IIdx), EIdx)

- Handle the case where the result of 'insert_subvect' is bitcasted
  before 'extract_subvec'. This removes the redundant insertf128/extractf128
  pair on unaligned 256-bit vector load/store on vectors of non 64-bit integer.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177945 91177308-0d34-0410-b5e6-96231b3b80d8
Revise alignment checking/calculation on 256-bit unaligned memory access

- It's still considered aligned when the specified alignment is larger
  than the natural alignment;
- The new alignment for the high 128-bit vector should be min(16,
  alignment) as the pointer is advanced by 16, a power-of-2 offset.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177947 91177308-0d34-0410-b5e6-96231b3b80d8
Added documentation to LangRef for the intrinsic llvm.ptr.annotation.* which for some reason was never written.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177950 91177308-0d34-0410-b5e6-96231b3b80d8
[ObjCARC Annotations] Implemented ARC annotation metadata to expose the ARC data flow analysis state in the IR via metadata.

Previously the inner works of the data flow analysis in ObjCARCOpts was hard to
get out of the optimizer for analysis of bugs or testing. All of the current ARC
unit tests are based off of testing the effect of the data flow
analysis (i.e. what statements are removed or moved, etc.). This creates
weakness in the current unit testing regimem since we are not actually testing
what effects various instructions have on the modeled pointer state.
Additionally in order to analyze a bug in the optimizer, one would need to track
by hand what the optimizer was actually doing either through use of DEBUG
statements or through the usage of a debugger, both yielding large loses in
developer productivity.

This patch deals with these two issues by providing ARC annotation
metadata that annotates instructions with the state changes that they cause in
various pointers as well as provides metadata to annotate provenance sources.

Specifically, we introduce the following metadata types:

1. llvm.arc.annotation.bottomup.
2. llvm.arc.annotation.topdown.
3. llvm.arc.annotation.provenancesource.

llvm.arc.annotation.{bottomup,topdown}: These annotations describes a state
change in a pointer when we are visiting instructions bottomup/topdown
respectively. The output format for both is the same:

  !1 = metadata !{metadata !"(test,%x)", metadata !"S_Release", metadata !"S_Use"}

The first element is a string tuple with the following format:

  (function,variable name)

The second two elements of the metadata show the previous state of the
pointer (in this case S_Release) and the new state of the pointer (S_Use). We
write the metadata in such a manner to ensure that it is easy for outside tools
to parse. This is important since I am currently working on a tool for taking
this information and pretty printing it besides the IR and that can be used for
LIT style testing via the generation of an index.

llvm.arc.annotation.provenancesource: This metadata is used to annotate
instructions which act as provenance sources, i.e. ones that introduce a
new (from the optimizer's perspective) non-argument pointer to track. This
enables cross-referencing in between provenance sources and the state changes
that occur to them.

This is still a work in progress. Additionally I plan on committing
later today additions to the annotations that annotate at the top/bottom
of basic blocks the state of the various pointers being tracked.

*NOTE* The metadata support is conditionally compiled into libObjCARCOpts only
when we are producing a debug build of llvm/clang and even so are
disabled by default. To enable the annotation metadata, pass in
-enable-objc-arc-annotations to opt.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177951 91177308-0d34-0410-b5e6-96231b3b80d8
[ObjCARC Annotations] Added support for displaying the state of pointers at the bottom/top of BBs of the ARC dataflow analysis for both bottomup and topdown analyses.

This will allow for verification and analysis of the merge function of
the data flow analyses in the ARC optimizer.

The actual implementation of this feature is by introducing calls to
the functions llvm.arc.annotation.{bottomup,topdown}.{bbstart,bbend}
which are only declared. Each such call takes in a pointer to a global
with the same name as the pointer whose provenance is being tracked and
a pointer whose name is one of our Sequence states and points to a
string that contains the same name.

To ensure that the optimizer does not consider these annotations in any
way, I made it so that the annotations are considered to be of IC_None
type.

A test case is included for this commit and the previous
ObjCARCAnnotation commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177952 91177308-0d34-0410-b5e6-96231b3b80d8
Temporarily XFAIL this test until Michael can look at it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177953 91177308-0d34-0410-b5e6-96231b3b80d8
Hmm...not failing...odd

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177955 91177308-0d34-0410-b5e6-96231b3b80d8
Remove testcase. It's failing on some platforms but not others.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177956 91177308-0d34-0410-b5e6-96231b3b80d8
Add a new watchdog timer interface. The interface does not permit handling timeouts, so
it's only really useful if you're going to crash anyways. Use it in the pretty stack trace
printer to kill the compiler if we hang while printing the stack trace.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177962 91177308-0d34-0410-b5e6-96231b3b80d8
Add missing file to cmake build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177963 91177308-0d34-0410-b5e6-96231b3b80d8