Commit Graph

367 Commits

Author SHA1 Message Date
Aaron Ballman e77ffe35bf Fixing some -Wcast-qual warnings; NFC.
llvm-svn: 221454
2014-11-06 14:32:30 +00:00
Justin Holewinski 3d140fcfd1 [NVPTX] Add NVPTXLowerStructArgs pass
This works around the limitation that PTX does not allow .param space
loads/stores with arbitrary pointers.

If a function has a by-val struct ptr arg, say foo(%struct.x *byval %d), then
add the following instructions to the first basic block :

%temp = alloca %struct.x, align 8
%tt1 = bitcast %struct.x * %d to i8 *
%tt2 = llvm.nvvm.cvt.gen.to.param %tt2
%tempd = bitcast i8 addrspace(101) * to %struct.x addrspace(101) *
%tv = load %struct.x addrspace(101) * %tempd
store %struct.x %tv, %struct.x * %temp, align 8

The above code allocates some space in the stack and copies the incoming
struct from param space to local space. Then replace all occurences of %d
by %temp.

Fixes PR21465.

llvm-svn: 221377
2014-11-05 18:19:30 +00:00
Duncan P. N. Exon Smith c5754a65e6 IR: MDNode => Value: NamedMDNode::getOperator()
Change `NamedMDNode::getOperator()` from returning `MDNode *` to
returning `Value *`.  To reduce boilerplate at some call sites, add a
`getOperatorAsMDNode()` for named metadata that's expected to only
return `MDNode` -- for now, that's everything, but debug node named
metadata (such as llvm.dbg.cu and llvm.dbg.sp) will soon change.  This
is part of PR21433.

Note that there's a follow-up patch to clang for the API change.

llvm-svn: 221375
2014-11-05 18:16:03 +00:00
Duncan P. N. Exon Smith 3872d0084c IR: MDNode => Value: Instruction::getMetadata()
Change `Instruction::getMetadata()` to return `Value` as part of
PR21433.

Update most callers to use `Instruction::getMDNode()`, which wraps the
result in a `cast_or_null<MDNode>`.

llvm-svn: 221024
2014-11-01 00:10:31 +00:00
Jingyue Wu ea51161a94 [NVPTX] aligned byte-buffers for vector return types
Summary:
Fixes PR21100 which is caused by inconsistency between the declared return type
and the expected return type at the call site. The new behavior is consistent
with nvcc and the NVPTXTargetLowering::getPrototype function.

Test Plan: test/Codegen/NVPTX/vector-return.ll

Reviewers: jholewinski

Reviewed By: jholewinski

Subscribers: llvm-commits, meheff, eliben, jholewinski

Differential Revision: http://reviews.llvm.org/D5612

llvm-svn: 220607
2014-10-25 03:46:16 +00:00
Rafael Espindola c606bfe660 Fix a bit of confusion about .set and produce more readable assembly.
Every target we support has support for assembly that looks like

a = b - c
.long a

What is special about MachO is that the above combination suppresses the
production of a relocation.

With this change we avoid producing the intermediary labels when they don't
add any value.

llvm-svn: 220256
2014-10-21 01:17:30 +00:00
Benjamin Kramer 2c99e413ba Reduce double set lookups. NFC.
llvm-svn: 219505
2014-10-10 15:32:50 +00:00
Benjamin Kramer c6cc58e703 Remove unnecessary copying or replace it with moves in a bunch of places.
NFC.

llvm-svn: 219061
2014-10-04 16:55:56 +00:00
Tilmann Scheller 383b4fff4c [NVPTX] Remove dead code.
Found by the Clang static analyzer.

llvm-svn: 218874
2014-10-02 15:12:48 +00:00
Aaron Ballman 0bb041b5f4 Reverting NFC changes from r218050. Instead, the warning was disabled for GCC in r218059, so these changes are no longer required.
llvm-svn: 218062
2014-09-18 17:34:23 +00:00
Aaron Ballman 11fa97fa32 Fixing a bunch of -Woverloaded-virtual warnings due to hiding getSubtargetImpl from the base class. NFC.
llvm-svn: 218050
2014-09-18 13:27:14 +00:00
Benjamin Kramer 8c90fd71f7 Add override to overriden virtual methods, remove virtual keywords.
No functionality change. Changes made by clang-tidy + some manual cleanup.

llvm-svn: 217028
2014-09-03 11:41:21 +00:00
Eric Christopher 79cc1e3ae7 Reinstate "Nuke the old JIT."
Approved by Jim Grosbach, Lang Hames, Rafael Espindola.

This reinstates commits r215111, 215115, 215116, 215117, 215136.

llvm-svn: 216982
2014-09-02 22:28:02 +00:00
Craig Topper fd38cbebda Remove 'virtual' keyword from methods markedwith 'override' keyword.
llvm-svn: 216823
2014-08-30 16:48:34 +00:00
Craig Topper 6dc4a8bc2c Fix some cases where StringRef was being passed by const reference. Remove const from some other StringRefs since its implicitly const already.
llvm-svn: 216820
2014-08-30 16:48:02 +00:00
Jingyue Wu cb83a155c1 [NVPTX] Make the alignment an explicit argument to ldu/ldg
Summary:
Instead of specifying the alignment as metadata which may be destroyed by
transformation passes, make the alignment the second argument to ldu/ldg
intrinsic calls.

Test Plan:
ldu-ldg.ll
ldu-i8.ll
ldu-reg-plus-offset.ll

Reviewers: eliben, meheff, jholewinski

Reviewed By: meheff, jholewinski

Subscribers: jholewinski, llvm-commits

Differential Revision: http://reviews.llvm.org/D5093

llvm-svn: 216731
2014-08-29 15:30:20 +00:00
Dylan Noblesmith c9e2a2709e Revert "NVPTX: remove another raw delete call"
This reverts commit r216364.

llvm-svn: 216430
2014-08-26 02:03:35 +00:00
Dylan Noblesmith 130589f804 NVPTX: remove another raw delete call
llvm-svn: 216364
2014-08-25 01:59:32 +00:00
Dylan Noblesmith 802b6ce8de NVPTX: remove raw delete call
Also make members that are never accessed outside the class
private.

llvm-svn: 216363
2014-08-25 01:59:29 +00:00
Duncan P. N. Exon Smith 7b859ff22c NVPTX: Use RAUW instead of reinventing the wheel
This code had a homemade RAUW that was incorrect when a user was a
constant: instead of calling `replaceUsersWithOnConstant()` it would
incorrectly update the operand in-place, invalidating
`LLVMContextImpl::ExprConstants`.  RAUW does the job better.

The ValueHandle that `GVMap` is holding onto needs to be removed first,
so this commit also removes each variable from the map on-the-fly.

Since deletions from `ExprConstants` use a linear search that compares
directly on the pointer value (instead of using the key), there isn't an
obvious way to expose this with a testcase.

llvm-svn: 215953
2014-08-19 00:20:02 +00:00
Benjamin Kramer a7c40ef022 Canonicalize header guards into a common format.
Add header guards to files that were missing guards. Remove #endif comments
as they don't seem common in LLVM (we can easily add them back if we decide
they're useful)

Changes made by clang-tidy with minor tweaks.

llvm-svn: 215558
2014-08-13 16:26:38 +00:00
Hal Finkel b216ca55af [NVPTX] Remove MemIntrinsicSDNode/MemSDNode duplicate checking
As of r214452, isa<MemSDNode> will return true for nodes for which
isa<MemIntrinsicSDNode> will return true (classof now respects the actual class
hierarchy). So we no longer need to check for both MemIntrinsicSDNode and
MemSDNode separately.

No functionality change intended.

llvm-svn: 215523
2014-08-13 04:59:51 +00:00
Sylvestre Ledru 469de19a09 Fix typos:
* libaries => libraries
* avaiable => available

llvm-svn: 215366
2014-08-11 18:04:46 +00:00
Joerg Sonnenberger 752b91bd82 If available, pass down the Fixup object to EvaluateAsRelocatable.
At least on PowerPC, the interpretation of certain modifiers depends on
the context they appear in.

llvm-svn: 215310
2014-08-10 11:35:12 +00:00
Eric Christopher b9fd9ed37e Temporarily Revert "Nuke the old JIT." as it's not quite ready to
be deleted. This will be reapplied as soon as possible and before
the 3.6 branch date at any rate.

Approved by Jim Grosbach, Lang Hames, Rafael Espindola.

This reverts commits r215111, 215115, 215116, 215117, 215136.

llvm-svn: 215154
2014-08-07 22:02:54 +00:00
Rafael Espindola f8b27c41e8 Nuke the old JIT.
I am sure we will be finding bits and pieces of dead code for years to
come, but this is a good start.

Thanks to Lang Hames for making MCJIT a good replacement!

llvm-svn: 215111
2014-08-07 14:21:18 +00:00
Eric Christopher fc6de428c8 Have MachineFunction cache a pointer to the subtarget to make lookups
shorter/easier and have the DAG use that to do the same lookup. This
can be used in the future for TargetMachine based caching lookups from
the MachineFunction easily.

Update the MIPS subtarget switching machinery to update this pointer
at the same time it runs.

llvm-svn: 214838
2014-08-05 02:39:49 +00:00
Eric Christopher d913448b38 Remove the TargetMachine forwards for TargetSubtargetInfo based
information and update all callers. No functional change.

llvm-svn: 214781
2014-08-04 21:25:23 +00:00
Aaron Ballman 08c0b5aa31 Improve some const-correctness to remove a -Wcast-qual warning. No functional changes intended.
llvm-svn: 214503
2014-08-01 12:34:58 +00:00
Louis Gerbarg 67474e3755 Make sure no loads resulting from load->switch DAGCombine are marked invariant
Currently when DAGCombine converts loads feeding a switch into a switch of
addresses feeding a load the new load inherits the isInvariant flag of the left
side. This is incorrect since invariant loads can be reordered in cases where it
is illegal to reoarder normal loads.

This patch adds an isInvariant parameter to getExtLoad() and updates all call
sites to pass in the data if they have it or false if they don't. It also
changes the DAGCombine to use that data to make the right decision when
creating the new load.

llvm-svn: 214449
2014-07-31 21:45:05 +00:00
Aaron Ballman 53201af4d5 Fixing a -Wcast-qual warning in GCC. No functional changes.
llvm-svn: 214399
2014-07-31 12:55:49 +00:00
Justin Holewinski 2cb5e181d1 [NVPTX] Silence a GCC warning found by the buildbots
The cast to NVPTXTargetLowering was missing a 'const', but let's
just access the right pointer through the subtarget anyway.

llvm-svn: 213793
2014-07-23 20:23:47 +00:00
Justin Holewinski ecca715b3c [NVPTX] mul.wide generation works for any smaller integer source types, not just the next smaller power of two
llvm-svn: 213784
2014-07-23 18:46:03 +00:00
Justin Holewinski 511664dc76 [NVPTX] Make sure we do not generate MULWIDE ISD nodes when optimizations are disabled
With optimizations disabled, we disable the isel patterns for mul.wide; but we
were still generating MULWIDE ISD nodes.  Now, we only try to generate MULWIDE
ISD nodes in DAGCombine if the optimization level is not zero.

llvm-svn: 213773
2014-07-23 17:40:45 +00:00
Tim Northover 9e108a0e3a NVPTX: support fpext/fptrunc to and from f16.
llvm-svn: 213377
2014-07-18 13:01:43 +00:00
Tim Northover 5e54fe14a4 NVPTX: support direct f16 <-> f64 conversions via intrinsics.
Clang may well start emitting these soon, and while it may not be
directly relevant for OpenCL or GLSL, the instructions were just
sitting there waiting to be used.

llvm-svn: 213356
2014-07-18 08:30:10 +00:00
Justin Holewinski 428cf0e49a [NVPTX] Improve handling of FP fusion
We now consider the FPOpFusion flag when determining whether
to fuse ops.  We also explicitly emit add.rn when fusion is
disabled to prevent ptxas from fusing the operations on its
own.

llvm-svn: 213287
2014-07-17 18:10:09 +00:00
Justin Holewinski e5a1173f67 [NVPTX] Add missing .v4 qualifier on vector store instruction
llvm-svn: 213276
2014-07-17 16:58:56 +00:00
Justin Holewinski 18cfe7d634 [NVPTX] Flag surface/texture query instructions with IsTexSurfQuery
Also, add some tests to make sure we can handle surface/texture
queries on both Fermi and Kepler+.

llvm-svn: 213268
2014-07-17 14:51:33 +00:00
Justin Holewinski 9a2350e459 [NVPTX] Add more surface/texture intrinsics, including CUDA unified texture fetch
This also uses TSFlags to mark machine instructions that are surface/texture
accesses, as well as the vector width for surface operations.  This is used
to simplify some of the switch statements that need to detect surface/texture
instructions

llvm-svn: 213256
2014-07-17 11:59:04 +00:00
Tim Northover fd7e424935 CodeGen: extend f16 conversions to permit types > float.
This makes the two intrinsics @llvm.convert.from.f16 and
@llvm.convert.to.f16 accept types other than simple "float". This is
only strictly needed for the truncate operation, since otherwise
double rounding occurs and there's no way to represent the strict IEEE
conversion. However, for symmetry we allow larger types in the extend
too.

During legalization, we can expand an "fp16_to_double" operation into
two extends for convenience, but abort when the truncate isn't legal. A new
libcall is probably needed here.

Even after this commit, various target tweaks are needed to actually use the
extended intrinsics. I've put these into separate commits for clarity, so there
are no actual tests of f64 conversion here.

llvm-svn: 213248
2014-07-17 10:51:23 +00:00
Justin Holewinski ac451066f4 [NVPTX] Honor alignment on vector loads/stores
We were not considering the stated alignment on vector loads/stores,
leading us to generate vector instructions even when we do not have
sufficient alignment.

Now, for IR like:

  %1 = load <4 x float>, <4 x float>* %ptr, align 4

we will generate correct, conservative PTX like:

  ld.f32 ... [%ptr]
  ld.f32 ... [%ptr+4]
  ld.f32 ... [%ptr+8]
  ld.f32 ... [%ptr+12]

Or if we have an alignment of 8 (for example), we can
generate code like:

  ld.v2.f32 ... [%ptr]
  ld.v2.f32 ... [%ptr+8]

llvm-svn: 213186
2014-07-16 19:45:35 +00:00
Justin Holewinski 3e037d98e6 [NVPTX] Rename registers %fl -> %fd and %rl -> %rd
This matches the internal behavior of NVIDIA tools like libnvvm.

llvm-svn: 213168
2014-07-16 16:26:58 +00:00
David Majnemer 8bce66b093 CodeGen: Stick constant pool entries in COMDAT sections for WinCOFF
COFF lacks a feature that other object file formats support: mergeable
sections.

To work around this, MSVC sticks constant pool entries in special COMDAT
sections so that each constant is in it's own section.  This permits
unused constants to be dropped and it also allows duplicate constants in
different translation units to get merged together.

This fixes PR20262.

Differential Revision: http://reviews.llvm.org/D4482

llvm-svn: 213006
2014-07-14 22:57:27 +00:00
NAKAMURA Takumi c3b3897e8a NVPTX/LLVMBuild.txt: Add "Scalar" to required_libraries. It is really referenced.
llvm-svn: 212918
2014-07-14 02:52:19 +00:00
Chandler Carruth 9d010fffe1 [codegen,aarch64] Add a target hook to the code generator to control
vector type legalization strategies in a more fine grained manner, and
change the legalization of several v1iN types and v1f32 to be widening
rather than scalarization on AArch64.

This fixes an assertion failure caused by scalarizing nodes like "v1i32
trunc v1i64". As v1i64 is legal it will fail to scalarize v1i32.

This also provides a foundation for other targets to have more granular
control over how vector types are legalized.

Patch by Hao Liu, reviewed by Tim Northover. I'm committing it to allow
some work to start taking place on top of this patch as it adds some
really important hooks to the backend that I'd like to immediately start
using. =]

http://reviews.llvm.org/D4322

llvm-svn: 212242
2014-07-03 00:23:43 +00:00
Justin Holewinski 9982f06aa3 [NVPTX] Use GreatestCommonDivisor64 from MathExtras instead of using our own. Thanks Hal!
llvm-svn: 211952
2014-06-27 19:36:25 +00:00
Justin Holewinski a0d531f031 [NVPTX] Add reflect intrinsic (better than matching by function name)
Also clean up some of the logic in NVVMReflect.cpp while we're messing around in there.

llvm-svn: 211948
2014-06-27 18:36:11 +00:00
Justin Holewinski a8071856a6 [NVPTX] Handle all possible vector types in getSetCCResultType, not just the ones representable as MVTs
llvm-svn: 211947
2014-06-27 18:36:08 +00:00
Justin Holewinski 2739c0175c [NVPTX] Add 'b' asm constraint
llvm-svn: 211946
2014-06-27 18:36:06 +00:00
Justin Holewinski b5db95e465 [NVPTX] Simplify some argument lowering logic
llvm-svn: 211945
2014-06-27 18:36:04 +00:00
Justin Holewinski e519a4301b [NVPTX] Do not process samplers in GenericToNVVM
llvm-svn: 211944
2014-06-27 18:36:02 +00:00
Justin Holewinski 549c773619 [NVPTX] Error out if initializer is given for variable in an address space that does not support initialization
llvm-svn: 211943
2014-06-27 18:36:01 +00:00
Justin Holewinski 773ca40f5d [NVPTX] Add support for .managed variables for UVM
llvm-svn: 211942
2014-06-27 18:35:58 +00:00
Justin Holewinski d73767a80a [NVPTX] Emit .weak linkage for link_once, weak, available_externally, and common linkage
llvm-svn: 211941
2014-06-27 18:35:56 +00:00
Justin Holewinski 73cb5de546 [NVPTX] Variables that start with llvm. or nvvm. are reserved and should not be emitted
llvm-svn: 211940
2014-06-27 18:35:53 +00:00
Justin Holewinski b926d9d446 [NVPTX] Fix handling of ldg/ldu intrinsics.
The address space of the pointer must be global (1) for these intrinsics.  There must also be alignment metadata attached to the intrinsic calls, e.g.

%val = tail call i32 @llvm.nvvm.ldu.i.global.i32.p1i32(i32 addrspace(1)* %ptr), !align !0

!0 = metadata !{i32 4}

llvm-svn: 211939
2014-06-27 18:35:51 +00:00
Justin Holewinski 6e40f63e41 [NVPTX] Clean up argument lowering code and properly handle alignment for structs and vectors
llvm-svn: 211938
2014-06-27 18:35:44 +00:00
Justin Holewinski d7d8fe0e9c [NVPTX] Add missing boolean vector contents flag
llvm-svn: 211937
2014-06-27 18:35:42 +00:00
Justin Holewinski 360a5cfcd3 [NVPTX] Add support for [SHL,SRA,SRL]_PARTS
llvm-svn: 211936
2014-06-27 18:35:40 +00:00
Justin Holewinski eafe26d082 [NVPTX] Implement fma and imad contraction as target DAGCombiner patterns
This also introduces DAGCombiner patterns for mul.wide to multiply two smaller integers and produce a larger integer

llvm-svn: 211935
2014-06-27 18:35:37 +00:00
Justin Holewinski 832e09b4d9 [NVPTX] Add support for efficient rotate instructions on SM 3.2+
llvm-svn: 211934
2014-06-27 18:35:33 +00:00
Justin Holewinski 7be57de6b8 [NVPTX] Add missing isel patterns for 64-bit atomics
llvm-svn: 211933
2014-06-27 18:35:30 +00:00
Justin Holewinski ca7a4f136d [NVPTX] Add isel patterns for bit-field extract (bfe)
llvm-svn: 211932
2014-06-27 18:35:27 +00:00
Justin Holewinski 10c25968d8 [NVPTX] Add support for isspacep instruction
llvm-svn: 211931
2014-06-27 18:35:24 +00:00
Justin Holewinski 124fc1951f [NVPTX] Add support for envreg reads
llvm-svn: 211930
2014-06-27 18:35:21 +00:00
Justin Holewinski 602fa5b5d1 [NVPTX] Add target options for PTX 3.2/4.0 and SM 5.0 (Maxwell)
Default PTX version is set to PTX 3.2

llvm-svn: 211929
2014-06-27 18:35:18 +00:00
Justin Holewinski c3f31ebe6e [NVPTX] Update sub-target feature detection
llvm-svn: 211928
2014-06-27 18:35:16 +00:00
Justin Holewinski 6dca83987c [NVPTX] Directly control the Machine SSA passes that are invoked for NVPTX.
NVPTX is a bit special in the optimizations it requires, so this gives
us better control over the backend optimization pipeline.

llvm-svn: 211927
2014-06-27 18:35:14 +00:00
Justin Holewinski 7d5bf66f61 [NVPTX] Emit .weak when linkage is not external, internal, or private
llvm-svn: 211926
2014-06-27 18:35:10 +00:00
Justin Holewinski 0da758571c [NVPTX] Just use getTypeAllocSize() when computing return value size for structures and vectors
llvm-svn: 211925
2014-06-27 18:35:08 +00:00
Eric Christopher 493f91b6de Move NVPTX subtarget dependent variables from the target machine
to the subtarget.

llvm-svn: 211860
2014-06-27 04:33:14 +00:00
Eric Christopher 2ecb77e31f Use the target lowering we can get off of the DAG rather than off
of the cached target machine.

llvm-svn: 211858
2014-06-27 03:45:49 +00:00
Eric Christopher dd440f8727 Move the constructor for NVPTXFrameLowering into the implementation
file in preparation for the subtarget move.

llvm-svn: 211847
2014-06-27 02:05:24 +00:00
Eric Christopher f0dad2670d Remove unnecessary caching of the TargetMachine on NVPTXFrameLowering.
Adjust the constructor accordingly.

llvm-svn: 211846
2014-06-27 02:05:22 +00:00
Eric Christopher d8132862a9 Rework the logic for setting the TargetName. This appears to
be shorter and identical in goal.

llvm-svn: 211845
2014-06-27 02:05:19 +00:00
Eric Christopher e032a8c0bd Remove caching of the target machine in NVPTXInstrInfo and
update constructor accordingly.

llvm-svn: 211840
2014-06-27 01:27:08 +00:00
Eric Christopher a1869461e1 Remove comment that duplicated information in the constructor
that it's after.

llvm-svn: 211839
2014-06-27 01:27:06 +00:00
Eric Christopher e8f50281a9 Remove commented out code.
llvm-svn: 211838
2014-06-27 01:27:05 +00:00
Eric Christopher c22ad16bc6 Remove extraneous parens and extraneous const cast (and fix the
prototype for the function to patch what we were returning).

llvm-svn: 211837
2014-06-27 01:27:03 +00:00
Alp Toker e69170a110 Revert "Introduce a string_ostream string builder facilty"
Temporarily back out commits r211749, r211752 and r211754.

llvm-svn: 211814
2014-06-26 22:52:05 +00:00
Alp Toker 614717388c Introduce a string_ostream string builder facilty
string_ostream is a safe and efficient string builder that combines opaque
stack storage with a built-in ostream interface.

small_string_ostream<bytes> additionally permits an explicit stack storage size
other than the default 128 bytes to be provided. Beyond that, storage is
transferred to the heap.

This convenient class can be used in most places an
std::string+raw_string_ostream pair or SmallString<>+raw_svector_ostream pair
would previously have been used, in order to guarantee consistent access
without byte truncation.

The patch also converts much of LLVM to use the new facility. These changes
include several probable bug fixes for truncated output, a programming error
that's no longer possible with the new interface.

llvm-svn: 211749
2014-06-26 00:00:48 +00:00
Rafael Espindola e2c6624475 Move expression visitation logic up to MCStreamer.
Remove the duplicate from MCRecordStreamer. No functionality change.

llvm-svn: 211714
2014-06-25 15:45:33 +00:00
Rafael Espindola 2be1281d43 Simplify the visitation of target expressions. No functionality change.
llvm-svn: 211707
2014-06-25 15:29:54 +00:00
Craig Topper 2a30d7889f Replace some assert(0)'s with llvm_unreachable.
llvm-svn: 211141
2014-06-18 05:05:13 +00:00
Tom Stellard 3787b12255 SelectionDAG: Don't use MVT::Other to determine legality of ISD::SELECT_CC
The SelectionDAG bad a special case for ISD::SELECT_CC, where it would
allow targets to specify:

setOperationAction(ISD::SELECT_CC, MVT::Other, Expand);

to indicate that they wanted to expand ISD::SELECT_CC for all types.
This wasn't applied correctly everywhere, and it makes writing new
DAG patterns with ISD::SELECT_CC difficult.

llvm-svn: 210541
2014-06-10 16:01:29 +00:00
Alp Toker 5c53639492 Fix typos
llvm-svn: 210401
2014-06-07 21:23:09 +00:00
Eric Christopher 0dd8d486b3 Have TargetSelectionDAGInfo take a DataLayout initializer rather than
a TargetMachine since the only thing it wants is DataLayout.

llvm-svn: 210366
2014-06-06 19:04:48 +00:00
Rafael Espindola 64c1e18033 Allow alias to point to an arbitrary ConstantExpr.
This  patch changes GlobalAlias to point to an arbitrary ConstantExpr and it is
up to MC (or the system assembler) to decide if that expression is valid or not.

This reduces our ability to diagnose invalid uses and how early we can spot
them, but it also lets us do things like

@test5 = alias inttoptr(i32 sub (i32 ptrtoint (i32* @test2 to i32),
                                 i32 ptrtoint (i32* @bar to i32)) to i32*)

An important implication of this patch is that the notion of aliased global
doesn't exist any more. The alias has to encode the information needed to
access it in its metadata (linkage, visibility, type, etc).

Another consequence to notice is that getSection has to return a "const char *".
It could return a NullTerminatedStringRef if there was such a thing, but when
that was proposed the decision was to just uses "const char*" for that.

llvm-svn: 210062
2014-06-03 02:41:57 +00:00
Alp Toker 5f83e477c3 Update a couple of header inclusion guards
llvm-svn: 209980
2014-05-31 21:26:09 +00:00
Jingyue Wu 69a6685c8d Test commit.
The keyword "virtual" is not necessary.

llvm-svn: 209501
2014-05-23 06:30:12 +00:00
Saleem Abdulrasool 9f664c1083 Target: change member from reference to pointer
This is a preliminary step to help ease the construction of CallLoweringInfo.
Changing the construction to a chained function pattern requires that the
parameter be nullable.  However, rather than copying the vector, save a pointer
rather than the reference to permit a late binding of the arguments.

llvm-svn: 209080
2014-05-17 21:50:01 +00:00
Eli Bendersky a108a65df2 Add an optimization that does CSE in a group of similar GEPs.
This optimization merges the common part of a group of GEPs, so we can compute
each pointer address by adding a simple offset to the common part.

The optimization is currently only enabled for the NVPTX backend, where it has
a large payoff on some benchmarks.

Review: http://reviews.llvm.org/D3462

Patch by Jingyue Wu.

llvm-svn: 207783
2014-05-01 18:38:36 +00:00
Craig Topper 2d2aa0ca1f Use makeArrayRef insted of calling ArrayRef<T> constructor directly. I introduced most of these recently.
llvm-svn: 207616
2014-04-30 07:17:30 +00:00
Craig Topper ee7b0f3956 De-virtualize or remove some methods that have no overrides nor override anything. In some cases remove all together if there are no callers either.
llvm-svn: 207610
2014-04-30 05:53:27 +00:00
Craig Topper 2865c986d1 [C++11] Add 'override' keywords and remove 'virtual'. Additionally add 'final' and leave 'virtual' on some methods that are marked virtual without overriding anything and have no obvious overrides themselves. NVPTX edition
llvm-svn: 207505
2014-04-29 07:57:44 +00:00
Craig Topper e73658ddbb [C++] Use 'nullptr'.
llvm-svn: 207394
2014-04-28 04:05:08 +00:00
Craig Topper 64941d9786 Convert SelectionDAG::getMergeValues to use ArrayRef.
llvm-svn: 207374
2014-04-27 19:20:57 +00:00
Craig Topper 59f626d9d5 Replace std::vector with SmallVector for some small, known size vectors.
llvm-svn: 207330
2014-04-26 19:29:47 +00:00
Craig Topper 206fcd450a Convert getMemIntrinsicNode to take ArrayRef of SDValue instead of pointer and size.
llvm-svn: 207329
2014-04-26 19:29:41 +00:00