Commit Graph

110816 Commits

Author SHA1 Message Date
Aaron Ballman
7e1839ff01 Silencing a -Wsequence-point warning, and the resulting undefined behavior. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223926 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 14:14:54 +00:00
David Majnemer
895316336e ConstantFold: div undef, 0 should fold to undef, not zero
Dividing by zero yields an undefined value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223924 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 09:14:55 +00:00
David Majnemer
6578f1beb1 InstSimplify: [al]shr exact undef, %X -> undef
Exact shifts always keep the non-zero bits of their input.  This means
it keeps it's undef bits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223923 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 09:14:52 +00:00
Michael Kuperstein
89db49fb9b [X86] Make a code path in EltsFromConsecutiveLoads work only on vectors it expects
EltsFromConsecutiveLoads was apparently only ever called for 128-bit vectors, and assumed this implicitly. r223518 started calling it for AVX-sized vectors, causing the code path that had this assumption to crash.
This adds a check to make this path fire only for 128-bit vectors.

Differential Revision: http://reviews.llvm.org/D6579

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223922 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 08:46:12 +00:00
David Majnemer
1297775557 InstSimplify: div %X, 0 -> undef
We already optimized rem %X, 0 to undef, we should do the same for div.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223919 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 07:52:18 +00:00
Craig Topper
f492c9e612 Use unique_ptr instead of DeleteContainerSeconds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223918 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 06:18:57 +00:00
Eric Fiselier
bd11260981 [LIT] Add support for UNSUPPORTED tag to TestRunner.parseIntegratedTestScript
Summary:
This patch gives me just enough to leverage the existing functionality in `TestRunner` for use in `libc++` and `libc++abi` .

It does the following:
* Adds the `UNSUPPORTED` tag to `TestRunner.parseIntegratedTestScript`.
* Allows `parseIntegratedTestScript` to return an empty script if a script is not required by the caller.



Reviewers: ddunbar, EricWF

Reviewed By: EricWF

Subscribers: cfe-commits, llvm-commits

Differential Revision: http://reviews.llvm.org/D6589

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223915 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 03:42:09 +00:00
David Majnemer
fda17198fd DataLayout: Provide nicer diagnostics for malformed strings
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223911 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 02:36:41 +00:00
David Majnemer
09df76443e AsmParser: Don't allow null bytes in BB labels
Since Value objects can't have null bytes in their name, we shouldn't
allow them in the labels of basic blocks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223907 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 02:10:35 +00:00
Duncan P. N. Exon Smith
0e6679635a IR: Move call to dropAllReferences() to MDNode subclasses
Don't call `dropAllReferences()` from `MDNode::~MDNode()`, call it
directly from `~MDNodeFwdDecl()` and `~GenericMDNode()`.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223904 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:45:04 +00:00
David Majnemer
bf13927f3b DataLayout: Be more verbose when diagnosing problems in pointer specs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223903 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:38:28 +00:00
David Majnemer
0178ab55a5 I didn't intend to commit this with r223898
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223899 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:17:48 +00:00
David Majnemer
ef6e5490e3 DataLayout: Move asserts over to report_fatal_error
As indicated by the tests, it is possible to feed the AsmParser an
invalid datalayout string.  We should verify the result of parsing this
string regardless of whether or not we have assertions enabled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223898 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:17:08 +00:00
Matthias Braun
5e40bd7d5f MachineVerifier: Allow physreg use if just a subreg is defined.
We can't mark partially undefined registers, so we have to allow reading
a register in the machine verifier if just parts of a register are
defined.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223896 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:13:13 +00:00
Matthias Braun
8f08516992 MachineVerifier: Allow LiveInterval segments to end at a partial write.
In the subregister liveness tracking case we do not create implicit
reads on partial register writes anymore, still we need to produce a new
SSA value for partial writes so the live segment has to end.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223895 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:13:11 +00:00
Matthias Braun
8f08002f03 VirtRegMap: Improve block live-in info if subregister liveness is available.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223894 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:13:08 +00:00
Matthias Braun
d7965336f9 MCRegisterInfo: Add MCSubRegIndexIterator.
This iterator iterates over subregister and their associated subregister indices
at the same time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223893 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:13:06 +00:00
Matthias Braun
668132490c VirtRegMap: No implicit defs/uses for super registers with subreg liveness tracking.
Adding the implicit defs/uses to the superregisters is semantically questionable
but was not dangerous before as the register allocator never assigned the same
register to two overlapping LiveIntervals even when the actually live
subregisters do not overlap. With subregister liveness tracking enabled this
does actually happen and leads to subsequent bugs if we don't stop adding
the superregister defs/uses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223892 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:13:04 +00:00
Matthias Braun
0fc28990e4 LiveRegMatrix: Respect subregister liveness when allocating registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223891 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:13:01 +00:00
Matthias Braun
7b54b4de26 LiveIntervalUnion: Allow specification of liverange when unifying/extracting.
This allows it to add subregister ranges into the union.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223890 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:59 +00:00
Matthias Braun
84cc6ec889 Tablegen'erate lanemasks for register units.
Now we can relate lanemasks in a virtual register to register units.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223889 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:56 +00:00
Matthias Braun
08c7b086a9 RegisterCoalescer: Preserve subregister liveranges.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223888 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:52 +00:00
Matthias Braun
f2f0589b02 LiveInterval: Add removeEmptySubRanges().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223887 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:40 +00:00
Matthias Braun
6e616d2e97 LiveIntervalAnalysis: Add subregister aware variants pruneValue().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223886 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:36 +00:00
Matthias Braun
c080fce9d5 LiveInterval: Introduce LiveQuery accessor for dead or live out values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223885 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:33 +00:00
Matthias Braun
7fbeb8d1b9 Add a flag to enable/disable subregister liveness.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223884 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:30 +00:00
Matthias Braun
4402447964 LiveIntervalAnalysis: Adapt repairIntervalsInRange() to subregister liveness.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223883 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:26 +00:00
Matthias Braun
c7db66d496 LiveRangeEdit: Adapt eliminateDeadDef() to subregister liveness.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223882 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:23 +00:00
Matthias Braun
dc08729288 LiveIntervalAnalysis: Adapt handleMove() to subregister ranges.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223881 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:20 +00:00
Matthias Braun
e59399c28c LiveIntervalAnalysis: Update SubRanges in shrinkToUses().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223880 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:18 +00:00
Matthias Braun
6cdf1d9a8f LiveIntervalAnalysis: Make computeDeadValues() private.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223879 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:15 +00:00
Matthias Braun
c66fa840bf LiveIntervalAnalysis: Compute subregister ranges.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223878 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:12 +00:00
Matthias Braun
01ddf04b63 LiveInterval: Add support to track liveness of subregisters.
This code adds the required data structures. Algorithms to compute it follow.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223877 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:10 +00:00
Matthias Braun
5874714ac3 LiveInterval: Add a 'covers' operation to LiveRange.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223876 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:06 +00:00
Matthias Braun
fd9bbbb541 LiveInterval: Add const version of LiveRange::advanceTo().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223875 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:02 +00:00
Matthias Braun
6fed9cabfd Add function that translates subregister lane masks to other subregs.
This works like the composeSubRegisterIndices() function but transforms
a subregister lane mask instead of a subregister index.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223874 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:12:00 +00:00
Matthias Braun
2d1536af06 Let tablegen compute maximum lanemask for regs/regclasses.
Let tablegen compute the combination of subregister lanemasks for all
subregisters in a register/register class. This is preparation for further
work subregister allocation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223873 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 01:11:56 +00:00
David Majnemer
eca84264a7 AsmParser: Don't crash if a null byte is inside a quoted string
We don't allow Value* to have names which contain null bytes.  The
AsmParser should reject .ll files that try to do this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223869 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 00:43:17 +00:00
Philip Reames
f8225ab80f Extend some comments around GCModuleInfo, GCFunctionInfo, & GCStrategy
Nothing particularly interesting here, just documenting the way the code currently works before I start changing it...



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223866 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 00:30:11 +00:00
Nico Weber
24d058a523 cmake: Make SVNVersion.inc work on Windows if svn is called svn.bat.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223864 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 00:10:21 +00:00
Rafael Espindola
d3732d9095 Simplify the handling of aliases in the gold plugin.
The complicated situation is when we have to keep an alias but drop a GV
that is part of the aliasee.

We used to clone the dropped GV and make the clone internal. This is wasteful
as we know the original will be dropped.

With this patch what is done instead is set the linkage of the original to
internal and replace all uses (but the one in the alias) with a new
declaration that takes the name of the old GV. This saves us from having
to copy the body.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223863 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 00:09:35 +00:00
Ahmed Bougacha
605c40341b [ARM] Combine base-updating/post-incrementing vector load/stores.
We used to only combine intrinsics, and turn them into VLD1_UPD/VST1_UPD
when the base pointer is incremented after the load/store.

We can do the same thing for generic load/stores.

Note that we can only combine the first load/store+adds pair in
a sequence (as might be generated for a v16f32 load for instance),
because other combines turn the base pointer addition chain (each
computing the address of the next load, from the address of the last
load) into independent additions (common base pointer + this load's
offset).

Differential Revision: http://reviews.llvm.org/D6585


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223862 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-10 00:07:37 +00:00
Philip Reames
3490d23337 Remove the Module pointer from GCStrategy and GCMetadataPrinter
In the current implementation, GCStrategy is a part of the ownership structure for the gc metadata which describes a Module. It also contains a reference to the module in question. As a result, GCStrategy instances are essentially Module specific.

I plan to transition away from this design. Instead, a GCStrategy will be owned by the LLVMContext. It will be a lightweight policy object which contains no information about the Modules or Functions involved, but can be easily reached given a Function.

The first step in this transition is to remove the direct Module reference from GCStrategy. This also requires removing the single user of this reference, the GCMetadataPrinter hierarchy. In theory, this will allow the lifetime of the printers to be scoped to the LLVMContext as well, but in practice, I'm not actually changing that. (Yet?)

An alternate design would have been to move the direct Module reference into the GCMetadataPrinter and change the keying of the owning maps to explicitly key off both GCStrategy and Module. I'm open to doing it that way instead, but didn't see much value in preserving the per Module association for GCMetadataPrinters.

The next change in this sequence will be to start unwinding the intertwined ownership between GCStrategy, GCModuleInfo, and GCFunctionInfo.

Differential Revision: http://reviews.llvm.org/D6566



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223859 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-09 23:57:54 +00:00
Duncan P. N. Exon Smith
ea614a5025 IR: Fix memory corruption in MDNode new/delete
There were two major problems with `MDNode` memory management.

 1. `MDNode::operator new()` called a placement array constructor for
    `MDOperand`.  What?  Each operand needs to be placed individually.

 2. `MDNode::operator delete()` failed to destruct the `MDOperand`s at
    all.

Frankly it's hard to understand how this worked locally, how this
survived an LTO bootstrap, or how it worked on most of the bots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223858 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-09 23:56:39 +00:00
David Majnemer
d465762cfd Forgot to add test for r223856
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223857 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-09 23:51:14 +00:00
David Majnemer
4f5424e74e AsmParser: Verifier that the contents of a hex integer are hex
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223856 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-09 23:50:38 +00:00
Kaelyn Takata
df7bc4ec73 Rename static functiom "map" to be more descriptive and to avoid
potential confusion with the std::map type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223853 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-09 23:32:46 +00:00
Duncan P. N. Exon Smith
ae5224d468 IR: Metadata: Detect an RAUW recursion
Speculatively handle a recursion in
`GenericMDNode::handleChangedOperand()`.  I'm hoping this fixes the
failing hexagon bot [1].

[1]: http://lab.llvm.org:8011/builders/llvm-hexagon-elf/builds/13434

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223849 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-09 23:04:59 +00:00
Michael Zolotukhin
c9f47d8821 Remove redundant variable.
Tested by adding assert(LoopVectorPreHeader == VecPreheader) on LLVM
test suite and SPECs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223847 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-09 22:45:07 +00:00
Colin LeMahieu
7d7b761cd0 [Hexagon] [NFC] Cleaning up unused classes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223845 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-09 22:33:26 +00:00