Commit Graph

16639 Commits

Author SHA1 Message Date
Nico Weber eb9488b151 Fix a TODO in X86CallFrameOptimization to not rely on a codegen artifact.
This happens to make X86CallFrameOptimization in -O0 / FastISel builds as well,
but it's not clear if the pass should run in that setup.

http://reviews.llvm.org/D22314

llvm-svn: 275320
2016-07-13 21:38:27 +00:00
Quentin Colombet 545e558b82 [MIR] Print on the given output instead of stderr.
Currently the MIR framework prints all its outputs (errors and actual
representation) on stderr.

This patch fixes that by printing the regular output in the output
specified with -o.

Differential Revision: http://reviews.llvm.org/D22251

llvm-svn: 275314
2016-07-13 20:36:03 +00:00
Matt Arsenault f071102647 AMDGPU: Remove last AMDIL intrinsics
llvm-svn: 275309
2016-07-13 19:42:06 +00:00
Andrew Kaylor 346dd7f1bd Reverting r275284 due to platform-specific test failures
llvm-svn: 275304
2016-07-13 19:09:16 +00:00
Simon Pilgrim 5d664af3c3 [X86][SSE] Regenerate truncated shift test
Check SSE2 and AVX2 implementations

llvm-svn: 275300
2016-07-13 18:50:10 +00:00
Simon Pilgrim 631643e7d9 Regenerate test
llvm-svn: 275299
2016-07-13 18:46:37 +00:00
Krzysztof Parzyszek cb4dd7656b Move mempcpy_call.ll to X86 subdirectory
llvm-svn: 275294
2016-07-13 18:28:45 +00:00
Andrew Kaylor 12cccdd731 Fix for Bug 26903, adds support to inline __builtin_mempcpy
Patch by Sunita Marathe

Differential Revision: http://reviews.llvm.org/D21920

llvm-svn: 275284
2016-07-13 17:25:11 +00:00
Matthias Braun 512424f28a PatchableFunction: Skip pseudos that do not create code
This fixes http://llvm.org/PR28524

llvm-svn: 275278
2016-07-13 16:37:29 +00:00
Sanjay Patel 610a2f6525 [x86][SSE/AVX] optimize pcmp results better (PR28484)
We know that pcmp produces all-ones/all-zeros bitmasks, so we can use that behavior to avoid unnecessary constant loading.

One could argue that load+and is actually a better solution for some CPUs (Intel big cores) because shifts don't have the
same throughput potential as load+and on those cores, but that should be handled as a CPU-specific later transformation if
it ever comes up. Removing the load is the more general x86 optimization. Note that the uneven usage of vpbroadcast in the
test cases is filed as PR28505:
https://llvm.org/bugs/show_bug.cgi?id=28505

Differential Revision: http://reviews.llvm.org/D22225

llvm-svn: 275276
2016-07-13 16:04:07 +00:00
Simon Pilgrim a99368fa35 [X86][AVX512] Add support for VPERMILPD/VPERMILPS variable shuffle mask comments
llvm-svn: 275272
2016-07-13 15:45:36 +00:00
Simon Pilgrim 48d8340760 [X86][AVX] Add support for target shuffle combining to VPERMILPS variable shuffle mask
Added AVX512F VPERMILPS shuffle decoding support

llvm-svn: 275270
2016-07-13 15:10:43 +00:00
Tom Stellard 418beb7671 AMDGPU/SI: Add support for R_AMDGPU_GOTPCREL
Reviewers: rafael, ruiu, tony-tye, arsenm, kzhuravl

Subscribers: arsenm, llvm-commits, kzhuravl

Differential Revision: http://reviews.llvm.org/D21484

llvm-svn: 275268
2016-07-13 14:23:33 +00:00
Matt Arsenault 0056868c4a AMDGPU: Fold out no-op kill intrinsics
llvm-svn: 275253
2016-07-13 06:04:22 +00:00
Tim Northover 72eebfa4b0 GlobalISel: freeze reserved regs after IRTranslator.
We can freeze the registers after the MachineFrameInfo has been configured (by
telling it about calls, inline asm, ...). This doesn't happen at all yet, but
will be part of IR translation.

Fixes -verify-machineinstrs assertion.

llvm-svn: 275221
2016-07-12 22:23:42 +00:00
Matt Arsenault 786724a22e AMDGPU: Follow up to r275203
I meant to squash this into it.

llvm-svn: 275220
2016-07-12 21:41:32 +00:00
Nemanja Ivanovic f0407e3902 The test case I added is PowerPC specific but I accidentally
had it in the wrong directory. Moved it to CodeGen/PowerPC.

Sorry about the noise.

llvm-svn: 275218
2016-07-12 21:24:08 +00:00
Nemanja Ivanovic b43bb6141e [Power9] Add codegen for VSX word insert/extract instructions
This patch corresponds to review:
http://reviews.llvm.org/D20239

It adds exploitation of XXINSERTW and XXEXTRACTUW instructions that
are useful in some cases for inserting and extracting vector elements of
v4[if]32 vectors.

llvm-svn: 275215
2016-07-12 21:00:10 +00:00
Simon Pilgrim 6fa71da4a4 [X86][AVX] Add support for target shuffle combining to VPERM2F128/VPERM2I128
llvm-svn: 275212
2016-07-12 20:27:32 +00:00
Matthias Braun 96ec47db74 X86FixupBWInsts: No need for forward liveness analysis.
With r274952 and r275201 in place there are no cases left where a
forward liveness analysis yields different results than a backward one.
So we can remove the forward stepping logic.

Differential Revision: http://reviews.llvm.org/D22083

llvm-svn: 275204
2016-07-12 19:04:30 +00:00
Matt Arsenault 657f871a4e AMDGPU: Fix verifier error with kill intrinsic
Don't create a terminator in the middle of the block.
We should probably get rid of this intrinsic.

llvm-svn: 275203
2016-07-12 19:01:23 +00:00
Wei Ding 5b2636a152 AMDGPU: Add LLVM IR Intrinsic for v_lerp_u8
Differential Revision: http://reviews.llvm.org/D22239

llvm-svn: 275197
2016-07-12 18:02:14 +00:00
Haicheng Wu 711ca868fc [AArch64] Set FMOVS0 and FMOVD0 as isAsCheapAsAMove when needed.
If a subtarget has both ZCZeroing and CustomCheapAsMoveHandling features (now
only Kryo has both), set FMOVS0 and FMOVD0 isAsCheapAsAMove.

Differential Revision: http://reviews.llvm.org/D22256

llvm-svn: 275178
2016-07-12 15:31:41 +00:00
Nemanja Ivanovic eebbcb6d57 [PowerPC] Cannonicalize applicable vector shift immediates as swaps
This patch corresponds to review:
http://reviews.llvm.org/D21358

Vector shifts that have the same semantics as a vector swap are cannonicalized
as such to provide additional opportunities for swap removal optimization to
remove unnecessary swaps.

llvm-svn: 275168
2016-07-12 12:16:27 +00:00
Nicolai Haehnle 7968c34586 AMDGPU: Unify MOVRELSOffset and MOVRELDOffset
Summary:
Previously, constant index insertelements would be turned into SI_INDIRECT_DST,
which is bound to prevent some optimization opportunities. Worse, it mislead
the heuristic that decides whether immediates should be lowered to S_MOV_B32
or V_MOV_B32 in a way that resulted in unnecessary v_readfirstlanes.

Reviewers: arsenm, tstellarAMD

Subscribers: arsenm, kzhuravl, llvm-commits

Differential Revision: http://reviews.llvm.org/D22217

llvm-svn: 275160
2016-07-12 08:12:16 +00:00
Craig Topper a6e6febe2c [AVX512] Remove masked logic op intrinsics and autoupgrade them to native IR.
llvm-svn: 275155
2016-07-12 05:27:53 +00:00
NAKAMURA Takumi e92e2124f6 llvm/test/CodeGen/AMDGPU/selected-stack-object.ll REQUIRES +Asserts, since it expects assertion failure.
llvm-svn: 275144
2016-07-12 02:18:09 +00:00
Haicheng Wu 1e39574e9f [Kryo] Enable ZCZeroing feature
This feature uses immediate #0 to zero a register.

Differential Revision: http://reviews.llvm.org/D19985

llvm-svn: 275143
2016-07-12 02:04:01 +00:00
Nico Weber c7bf646a99 Teach FastISel about thiscall (and, hence, about callee-pop).
http://reviews.llvm.org/D22115

llvm-svn: 275135
2016-07-12 01:30:35 +00:00
Matt Arsenault 45f8216cee AMDGPU: Remove superfluous string attributes from tests
Also fix v_mac.ll not testing right thing for fneg

llvm-svn: 275129
2016-07-11 23:35:48 +00:00
Nicolai Haehnle c06bfa1daa AMDGPU: Treat texture gather instructions more like other MIMG instructions
Summary:
Setting MIMG to 0 has a bunch of unexpected side effects, including that
isVMEM returns false which leads to incorrect treatment in the hazard
recognizer. The reason I noticed it is that it also leads to incorrect
treatment in VGPR-to-SGPR copies, which is one cause of the referenced bug.

The only reason why MIMG was set to 0 is to signal the special handling of
dmasks, but that can be checked differently.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96877

Reviewers: arsenm, tstellarAMD

Subscribers: arsenm, kzhuravl, llvm-commits

Differential Revision: http://reviews.llvm.org/D22210

llvm-svn: 275113
2016-07-11 21:59:43 +00:00
Nicolai Haehnle f52c3cf272 AMDGPU: fix local stack slot allocation bugs
Summary:
The main bug fix here is using the 32-bit encoding of V_ADD_I32 in
materializeFrameBaseRegister and resolveFrameIndex, so that arbitrary
immediates work.

The second part is that we may now require the SegmentWaveByteOffset
even when there are initially no stack objects and VGPR spilling isn't
enabled, for stack slots that are allocated later. This means that some
bits become effectively dead and can be cleaned up.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96602
Tested-by: Kai Wasserbäch <kai@dev.carbon-project.org>

Reviewers: arsenm, tstellarAMD

Subscribers: arsenm, llvm-commits, kzhuravl

Differential Revision: http://reviews.llvm.org/D21551

llvm-svn: 275108
2016-07-11 21:44:40 +00:00
Quentin Colombet fb82c7bc94 [X86] Fix tailcall return address clobber bug.
This bug (llvm.org/PR28124) was introduced by r237977, which refactored
the tail call  sequence to be generated in two passes instead of one.

Unfortunately, the stack adjustment produced by the first pass was not
recognized by X86FrameLowering::mergeSPUpdates() in all cases, causing
code such as the following, which clobbers the return address, to be
generated:

popl    %edi
popl    %edi
pushl   %eax
jmp     tailcallee              # TAILCALL

To fix the problem, the entire stack adjustment is performed in
X86ExpandPseudo::ExpandMI() for tail calls.

Patch by Magnus Lång <margnus1@gmail.com>

Differential Revision: http://reviews.llvm.org/D21325

llvm-svn: 275103
2016-07-11 21:03:03 +00:00
Michael Kuperstein cfbac5f361 [X86] Disable FixupSetCC for CodeGenOpt::None
It is an optimization pass, and should not run at -O0. Especially since Fast RA
will not do the required register coalescing anyway, so it's a loss even from
the optimization standpoint.

This also works around (but doesn't quite fix) PR28489.

llvm-svn: 275099
2016-07-11 20:40:44 +00:00
Chad Rosier 4f0dad1674 [IPRA] Properly compute register usage at call sites.
Differential Revision: http://reviews.llvm.org/D21395
Patch by Vivek Pandya.
PR28144

llvm-svn: 275087
2016-07-11 18:45:49 +00:00
Zhan Jun Liau def708a0f9 [SystemZ] Recognize Load On Condition Immediate (LOCHI/LOGHI) opportunities
Summary: Add support for the z13 instructions LOCHI and LOCGHI which
conditionally load immediate values.  Add target instruction info hooks so
that if conversion will allow predication of LHI/LGHI.

Author: RolandF

Reviewers: uweigand

Subscribers: zhanjunl

Commiting on behalf of Roland.

Differential Revision: http://reviews.llvm.org/D22117

llvm-svn: 275086
2016-07-11 18:45:03 +00:00
Sanjay Patel 8f1d408c74 [x86] make some of the tests 256-bit for testing diversity
llvm-svn: 275070
2016-07-11 15:08:37 +00:00
Sanjay Patel b428951990 [x86] specify triple to avoid bot failures
llvm-svn: 275067
2016-07-11 14:17:54 +00:00
Sanjay Patel 0d38830aca [x86] update checks
llvm-svn: 275064
2016-07-11 14:07:31 +00:00
Zlatko Buljan cba9f80ba8 [mips][microMIPS] Implement LDC1, SDC1, LDC2, SDC2, LWC1, SWC1, LWC2 and SWC2 instructions and add CodeGen support
Differential Revision: http://reviews.llvm.org/D18824

llvm-svn: 275050
2016-07-11 07:41:56 +00:00
Elena Demikhovsky d84f337953 AVX-512: DAG lowering for scalar MIN/MAX commutable ops
DAG lowering was missing for the scalar FMINC, FMAXC nodes.
The nodes are generated only in the "unsafe-fp-math" mode.
Added tests.

llvm-svn: 275048
2016-07-11 06:08:06 +00:00
Craig Topper 7ee070e7bc [AVX512] Add support for 512-bit ANDN now that all ones build vectors survive long enough to allow the matching.
llvm-svn: 275046
2016-07-11 05:36:53 +00:00
Craig Topper 516e14cd8e [AVX512] Use vpternlog with an immediate of 0xff to create 512-bit all one vectors.
llvm-svn: 275045
2016-07-11 05:36:48 +00:00
Jan Vesely 2fa28c330c AMDGPU/R600: Add implicitarg.ptr intrinsic
Differential Revision: http://reviews.llvm.org/D21622

llvm-svn: 275024
2016-07-10 21:20:29 +00:00
Simon Pilgrim 2191faa433 [X86][SSE] Add support for target shuffle combining to PSHUFLW/PSHUFHW
llvm-svn: 275022
2016-07-10 21:02:47 +00:00
Sanjay Patel ccd08fc8c4 [x86, SSE, AVX] add tests for icmp+zext (PR28484)
Note the inconsistent vpbroadcast generation for AVX2; another bug.

llvm-svn: 275020
2016-07-10 20:45:14 +00:00
Simon Pilgrim 51c786bd91 [X86][SSE] Added tests for combining shuffles to PSHUFLW/PSHUFHW
llvm-svn: 275019
2016-07-10 20:19:56 +00:00
Marcin Koscielnicki cf7cc724a7 [SystemZ] Utilize Test Data Class instructions.
This adds a new SystemZ-specific intrinsic, llvm.s390.tdc.f(32|64|128),
which maps straight to the test data class instructions.  A new IR pass
is added to recognize instructions that can be converted to TDC and
perform the necessary replacements.

Differential Revision: http://reviews.llvm.org/D21949

llvm-svn: 275016
2016-07-10 14:41:22 +00:00
Craig Topper 0b0954570a [AVX512] Add support for lowering to 512-bit SHUFPS.
llvm-svn: 275011
2016-07-10 05:55:53 +00:00
Simon Pilgrim 606126e848 [X86][SSE] Add support for target shuffle combining to INSERTPS
llvm-svn: 274990
2016-07-09 21:47:55 +00:00
Simon Pilgrim 890b415902 [X86][SSE] Regenerate vector shift tests
llvm-svn: 274987
2016-07-09 20:55:20 +00:00
Matt Arsenault c1e6a45f2e AMDGPU: Merge / reorganize tests
llvm-svn: 274972
2016-07-09 08:02:28 +00:00
Matt Arsenault b2cb5f8105 AMDGPU: Simplify tests with per function subtargets
llvm-svn: 274971
2016-07-09 07:55:03 +00:00
Matt Arsenault dfec5ce032 AMDGPU: Fix fdiv lowering when f32 denormals supported
Also fix test not actually using function labels.

llvm-svn: 274969
2016-07-09 07:48:11 +00:00
Craig Topper 70610cf7b6 [X86] Remove and autoupgrade 512-bit non-temporal store intrinsics.
llvm-svn: 274966
2016-07-09 04:38:27 +00:00
Matt Arsenault 1322b6f8bb AMDGPU: Improve offset folding for register indexing
llvm-svn: 274954
2016-07-09 01:13:56 +00:00
Matthias Braun 152e7c8b12 VirtRegMap: Replace some identity copies with KILL instructions.
An identity COPY like this:
   %AL = COPY %AL, %EAX<imp-def>
has no semantic effect, but encodes liveness information: Further users
of %EAX only depend on this instruction even though it does not define
the full register.

Replace the COPY with a KILL instruction in those cases to maintain this
liveness information. (This reverts a small part of r238588 but this
time adds a comment explaining why a KILL instruction is useful).

llvm-svn: 274952
2016-07-09 00:19:07 +00:00
Jacques Pienaar 9e70127b0a [lanai] Update test to use peephole-opt and not peephole-opts
llvm-svn: 274945
2016-07-08 22:28:29 +00:00
Matt Arsenault 3fb8f9eabf Reapply r274829 with fix for FP vectors
llvm-svn: 274937
2016-07-08 21:25:33 +00:00
Nico Weber 28410c6846 Revert r274829, it caused PR28472.
llvm-svn: 274916
2016-07-08 19:52:19 +00:00
Simon Pilgrim 0a0e0d4e8e [X86] Regenerated bitreverse tests to demonstrate what is going on.
llvm-svn: 274915
2016-07-08 19:51:08 +00:00
Simon Pilgrim aaaeedb8cb [X86] Added bitreverse tests for non-legal types
Requested on D21578

llvm-svn: 274914
2016-07-08 19:48:33 +00:00
Simon Pilgrim 950419f948 [X86][AVX2] Add support for target shuffle combining to VPERMPD/VPERMQ
llvm-svn: 274908
2016-07-08 19:23:29 +00:00
Simon Pilgrim b600ba3b79 [X86][AVX] Added combine test that should simplify to insertps
llvm-svn: 274884
2016-07-08 17:01:42 +00:00
Matt Arsenault 44540a3db2 PeepholeOptimizer: Make pass name match DEBUG_TYPE
llvm-svn: 274874
2016-07-08 16:29:11 +00:00
Chris Dewhurst 3202f065b8 [Sparc] Leon errata fix passes.
Errata fixes for various errata in different versions of the Leon variants of the Sparc 32 bit processor.

The nature of the errata are listed in the comments preceding the errata fix passes. Relevant unit tests are implemented for each of these.

Note: Running clang-format has changed a few other lines too, unrelated to the implemented errata fixes. These have been left in as this keeps the code formatting consistent.

Differential Revision: http://reviews.llvm.org/D21960

llvm-svn: 274856
2016-07-08 15:33:56 +00:00
Sjoerd Meijer 1ee119f897 Do not expand SDIV when compiling for minimum code size
Differential Revision: http://reviews.llvm.org/D22139

llvm-svn: 274855
2016-07-08 15:32:01 +00:00
Sjoerd Meijer 46c4c3d31c Addressing post-commit comments regarding not expanding UDIV;
we don't expand only when compiling for minimum code size.

llvm-svn: 274847
2016-07-08 14:17:09 +00:00
Sjoerd Meijer a625af3feb Code size optimisation: don't expand a div to a mul and and a shift sequence.
As a result, the urem instruction will not be expanded to a sequence of umull,
lsrs, muls and sub instructions, but just a call to __aeabi_uidivmod.

Differential Revision: http://reviews.llvm.org/D22131

llvm-svn: 274843
2016-07-08 12:54:43 +00:00
Simon Pilgrim 828c731880 [X86][SSE] Accept any shuffle mask that is all zeroes
Until we have a better way to extract constants through bitcasted build vectors (and how to handle undefs of partial lanes etc.) at least accept build vectors that are all zeroes.

llvm-svn: 274833
2016-07-08 10:39:12 +00:00
Matt Arsenault c3a6fe6ecd Bug 28444: Fix assertion when extract_vector_elt has mismatched type
For some reason extract_vector_elt is sometimes allowed to have
a different result type than the vector element type.

llvm-svn: 274829
2016-07-08 07:05:00 +00:00
Craig Topper f7bf6de0af [AVX512] Remove and autoupgrade a duplicate set of 512-bit masked shift intrinsics.
I'm not sure if clang ever used these builtin names or not.

llvm-svn: 274827
2016-07-08 06:14:47 +00:00
Wei Mi 90d195a5fd [PM] Port UnreachableBlockElim to the new Pass Manager
Differential Revision: http://reviews.llvm.org/D22124

llvm-svn: 274824
2016-07-08 03:32:49 +00:00
Saleem Abdulrasool eb059b0e0a ARM: support high registers in __builtin_longjmp on WoA
Windows on ARM uses a pure thumb-2 environment.  This means that it can select a
high register when doing a __builtin_longjmp.  We would use a tLDRi which would
truncate the register to a low register.  Use a t2LDRi12 to get the full
register file access.  Tweak the code to just load into PC, as that is an
interworking branch on all supported cores anyways.

llvm-svn: 274815
2016-07-08 00:48:22 +00:00
Jacques Pienaar 6d3eecc843 [lanai] Use peephole optimizer to generate more conditional ALU operations.
Summary:
* Similiar to the ARM backend yse the peephole optimizer to generate more conditional ALU operations;
* Add predicated type with default always true to RR instructions in LanaiInstrInfo.td;
* Move LanaiSetflagAluCombiner into optimizeCompare;
* The ASM parser can currently only handle explicitly specified CC, so specify ".t" (true) where needed in the ASM test;
* Remove unused MachineOperand flags;

Reviewers: eliben

Subscribers: aemerson

Differential Revision: http://reviews.llvm.org/D22072

llvm-svn: 274807
2016-07-07 23:36:04 +00:00
Michael Kuperstein 3e3652aef2 Recommit r274692 - [X86] Transform setcc + movzbl into xorl + setcc
xorl + setcc is generally the preferred sequence due to the partial register
stall setcc + movzbl suffers from. As a bonus, it also encodes one byte smaller.
This fixes PR28146.

The original commit tried inserting an 8bit-subreg into a GR32 (not GR32_ABCD)
which was not appreciated by fast regalloc on 32-bit.

llvm-svn: 274802
2016-07-07 22:50:23 +00:00
Chad Rosier 112d0e996b [AArch64] Change the preferred alignment for char and short to word alignment.
The commit reinstates r273279, which was informally approved.

Original Review: http://reviews.llvm.org/D21414

This reverts commit ca632c91aaa7cafc50942f890c49f727a046ace1.

llvm-svn: 274790
2016-07-07 20:02:18 +00:00
Tim Northover 1d106c5fc2 tests: accept different TargetOpcode values.
These tests don't actually care about the internal opcode number, but have to
be updated whenever we add a new one for GlobalISel. That's bad.

llvm-svn: 274774
2016-07-07 17:51:42 +00:00
Michael Kuperstein edb38a94f8 Revert r274692 to check whether this is what breaks windows selfhost.
llvm-svn: 274771
2016-07-07 16:55:35 +00:00
Justin Bogner a466cc33fa NVPTX: Remove the legacy ptx intrinsics
- Rename the ptx.read.* intrinsics to nvvm.read.ptx.sreg.* - some but
  not all of these registers were already accessible via the nvvm
  name.
- Rename ptx.bar.sync nvvm.bar.sync, to match nvvm.bar0.

There's a fair amount of code motion here, but it's all very
mechanical.

llvm-svn: 274769
2016-07-07 16:40:17 +00:00
Chad Rosier 3972953efd Revert "[AArch64] Change the preferred alignment for char and short to word alignment"
This reverts commit r273279 as the change was not properly approved.

llvm-svn: 274768
2016-07-07 16:37:29 +00:00
Craig Topper d5d2a35013 [AVX512] Zero extend the result of vpcmpeq/vpcmpgt and similar intrinsics in the autoupgrade code. This currently results in worse codegen but is needed for correctness.
llvm-svn: 274736
2016-07-07 06:11:07 +00:00
Manman Ren 524ca27b90 Add testing coverage for r274582.
llvm-svn: 274693
2016-07-06 22:01:28 +00:00
Michael Kuperstein 1ef6c59b1d [X86] Transform setcc + movzbl into xorl + setcc
xorl + setcc is generally the preferred sequence due to the partial register
stall setcc + movzbl suffers from. As a bonus, it also encodes one byte smaller.

This fixes PR28146.

Differential Revision: http://reviews.llvm.org/D21774

llvm-svn: 274692
2016-07-06 21:56:18 +00:00
Matthias Braun ad0032a649 AArch64: Change modeling of zero cycle zeroing.
On CPUs with the zero cycle zeroing feature enabled "movi v.2d" should
be used to zero a vector register. This was previously done at
instruction selection time, however the register coalescer sometimes
widened multiple vregs to the Q width because of that leading to extra
spills. This patch leaves the decision on how to zero a register to the
AsmPrinter phase where it doesn't affect register allocation anymore.

This patch also sets isAsCheapAsAMove=1 on FMOVS0, FMOVD0.

This fixes http://llvm.org/PR27454, rdar://25866262

Differential Revision: http://reviews.llvm.org/D21826

llvm-svn: 274686
2016-07-06 21:39:33 +00:00
Justin Lebar 6f9d01bbd5 [NVPTX] Add sm_60, sm_61, sm_62 targets to LLVM.
Reviewers: tra

Subscribers: jholewinski, llvm-commits

Differential Revision: http://reviews.llvm.org/D22068

llvm-svn: 274674
2016-07-06 21:06:10 +00:00
Justin Bogner a463537a36 NVPTX: Replace uses of cuda.syncthreads with nvvm.barrier0
Everywhere where cuda.syncthreads or __syncthreads is used, use the
properly namespaced nvvm.barrier0 instead.

llvm-svn: 274664
2016-07-06 20:02:45 +00:00
Elliot Colp bc2cfc2291 [SystemZ] Remove AND mask of bottom 6 bits when result is used for shift/rotate
On SystemZ, shift and rotate instructions only use the bottom 6 bits of the shift/rotate amount.
Therefore, if the amount is ANDed with an immediate mask that has all of the bottom 6 bits set, we
can remove the AND operation entirely.

Differential Revision: http://reviews.llvm.org/D21854

llvm-svn: 274650
2016-07-06 18:13:11 +00:00
Kit Barton f9d0a40573 Ensure all uses of permute instructions feed vector stores
There is a problem in VSXSwapRemoval where it is incorrectly removing permute instructions.
In this case, the permute is feeding both a vector store and also a non-store instruction. In this case, the permute cannot be removed.

The fix is to simply look at all the uses of the vector register defined by the permute and ensure that all the uses are vector store instructions.

This problem was reported in PR 27735 (https://llvm.org/bugs/show_bug.cgi?id=27735).

Test case based on the original problem reported.

Phabricator Review: http://reviews.llvm.org/D21802

llvm-svn: 274645
2016-07-06 18:03:52 +00:00
Tim Shen 1c3c0afc53 [DAGCombiner] Fix visitSTORE to continue processing current SDNode, if findBetterNeighborChains doesn't actually CombineTo it.
Summary:
findBetterNeighborChains may or may not find a better chain for each node it finds, which include the node ("St") that visitSTORE is currently processing. If no better chain is found for St, visitSTORE should continue instead of return SDValue(St, 0), as if it's CombinedTo'ed.

This fixes bug 28130. There might be other ways to make the test pass (see D21409). I think both of the patches are fixing actual bugs revealed by the same testcase.

Reviewers: echristo, wschmidt, hfinkel, kbarton, amehsan, arsenm, nemanjai, bogner

Subscribers: mehdi_amini, nemanjai, llvm-commits

Differential Revision: http://reviews.llvm.org/D21692

llvm-svn: 274644
2016-07-06 17:44:03 +00:00
Simon Pilgrim 118da63a9d [X86][SSE] Added test cases for missed opportunities to combine pshufb to pslldq/psrldq
llvm-svn: 274631
2016-07-06 15:09:48 +00:00
Elena Demikhovsky ad0a56f3da Re-commit of 274613.
The prev commit failed on compilation.
A minor change in one pattern in lib/Target/X86/X86InstrAVX512.td fixes the failure.

llvm-svn: 274626
2016-07-06 14:15:43 +00:00
Diana Picus b772e409ba [ARM] Do not test for CPUs, use SubtargetFeatures. Also remove 2 flags.
This is a follow-up for r273544.

The end goal is to get rid of the isSwift / isCortexXY / isWhatever methods.

This commit also removes two command-line flags that weren't used in any of the
tests: widen-vmovs and swift-partial-update-clearance. The former may be easily
replaced with the mattr mechanism, but the latter may not (as it is a subtarget
property, and not a proper feature).

Differential Revision: http://reviews.llvm.org/D21797

llvm-svn: 274620
2016-07-06 11:22:11 +00:00
Elena Demikhovsky 02ced295aa Reverted 274613 due to compilation failue.
llvm-svn: 274615
2016-07-06 09:11:49 +00:00
Elena Demikhovsky 5a4f2476fd AVX-512: Optimization for patterns with i1 scalar type
The patch removes redundant kmov instructions (not all, we still have a lot of work here) and redundant "and" instructions after "setcc".
I use "AssertZero" marker between X86ISD::SETCC node and "truncate" to eliminate extra "and $1" instruction.
I also changed zext, aext and trunc patterns in the .td file. It allows to remove extra "kmov" instruictions.

This patch fixes https://llvm.org/bugs/show_bug.cgi?id=28173.

Fast ISEL mode is not supported correctly for AVX-512. ICMP/FCMP scalar instruction should return result in k-reg. It will be fixed in one of the next patches. I redirected handling of "cmp" to the DAG builder mode. (The code looks worse in one specific test case, but without this fix the new patch fails).

Differential revision: http://reviews.llvm.org/D21956

llvm-svn: 274613
2016-07-06 09:01:20 +00:00
Nicolai Haehnle e40530ea7b AMDGPU: Fix return of non-void-returning shaders
Summary:
Since "AMDGPU: Fix verifier errors in SILowerControlFlow", the logic that
ensures that a non-void-returning shader falls off the end of the last
basic block was effectively disabled, since SI_RETURN is now used.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96731

Reviewers: arsenm, tstellarAMD

Subscribers: arsenm, kzhuravl, llvm-commits

Differential Revision: http://reviews.llvm.org/D21975

llvm-svn: 274612
2016-07-06 08:35:17 +00:00
Tim Northover e6ae6767d9 AArch64: TableGenerate system instruction operands.
The way the named arguments for various system instructions are handled at the
moment has a few problems:

  - Large-scale duplication between AArch64BaseInfo.h and AArch64BaseInfo.cpp
  - That weird Mapping class that I have no idea what I was on when I thought
    it was a good idea.
  - Searches are performed linearly through the entire list.
  - We print absolutely all registers in upper-case, even though some are
    canonically mixed case (SPSel for example).
  - The ARM ARM specifies sysregs in terms of 5 fields, but those are relegated
    to comments in our implementation, with a slightly opaque hex value
    indicating the canonical encoding LLVM will use.

This adds a new TableGen backend to produce efficiently searchable tables, and
switches AArch64 over to using that infrastructure.

llvm-svn: 274576
2016-07-05 21:23:04 +00:00
Balaram Makam d4acd7ed10 Revert r259387: "AArch64: Implement missed conditional compare sequences."
This reverts commit r259387 because it inserts illegal code after legalization
    in some backends where i64 OR type is illegal for example.

llvm-svn: 274573
2016-07-05 20:24:05 +00:00
Simon Pilgrim bec6543d17 [X86][AVX2] Add support for target shuffle combining to BROADCAST
Only support broadcast from vector register so far - memory folding support will have to wait.

llvm-svn: 274572
2016-07-05 20:11:29 +00:00
Simon Pilgrim 48adedffb7 [X86][AVX512] Fixed decoding of permd/permpd variable mask shuffles + enabled them for target shuffle combining
Corrected element mask masking to extract the bottom index bits (now matches the perm2 implementation but for unary inputs).

llvm-svn: 274571
2016-07-05 18:31:17 +00:00
Saleem Abdulrasool 4d950ef892 ARM: fix `-mlong-calls` for WoA
Not all code-paths set the relocation model to static for Windows.  This
currently breaks on Windows ARM with `-mlong-calls` when built with clang.
Loosen the assertion to what it was previously.  We would ideally ensure that
all the configuration sets Windows to static relocation model.

llvm-svn: 274570
2016-07-05 18:30:52 +00:00
Matt Arsenault 2d79389508 DAGCombiner: Fold away vector extract of insert with the same index
This only really matters when the index is non-constant since the
constant case already gets taken care of by other combines.

llvm-svn: 274569
2016-07-05 18:25:02 +00:00
Tim Northover 01dff9d18a AArch64: use correct SDValue # when looking for bitfield placement.
The other use really does only care about the SDNode (it checks the
opcode against a whitelist), but bitFieldPlacement can be misled if
the node produces multiple results.

Patch by Ismail Badawi.

llvm-svn: 274567
2016-07-05 18:02:57 +00:00
Matt Arsenault ffc8275f2b AMDGPU: Fix folding SGPRs into madak/madmk src0
Because of the special immediate operand, the constant
bus is already used so SGPRs are never useful.

r263212 changed the name of the immediate operand, which
broke the verifier check for the restriction.

llvm-svn: 274564
2016-07-05 17:09:01 +00:00
Simon Pilgrim 4e96fbf3c1 [X86][AVX512] Autoupgrade the BROADCAST intrinsics
llvm-svn: 274550
2016-07-05 13:58:47 +00:00
Simon Pilgrim 1e91654b38 [X86][AVX512BW] Added BROADCAST intrinsics fast-isel generic IR tests
llvm-svn: 274545
2016-07-05 13:16:05 +00:00
James Molloy ae5ff990ae [Thumb] Reapply r272251 with a fix for PR28348 (mk 2)
The important thing I was missing was ensuring newly added constants were kept in topological order. Repositioning the node is correct if the constant is newly added (so it has no topological ordering) but wrong if it already existed - positioning it next in the worklist would break the topological ordering.

Original commit message:
  [Thumb] Select a BIC instead of AND if the immediate can be encoded more optimally negated

  If an immediate is only used in an AND node, it is possible that the immediate can be more optimally materialized when negated. If this is the case, we can negate the immediate and use a BIC instead;

    int i(int a) {
      return a & 0xfffffeec;
    }

  Used to produce:
      ldr r1, [CONSTPOOL]
      ands r0, r1
    CONSTPOOL: 0xfffffeec

  And now produces:
      movs    r1, #255
      adds    r1, #20  ; Less costly immediate generation
      bics    r0, r1

llvm-svn: 274543
2016-07-05 12:37:13 +00:00
Simon Pilgrim 20ede63a33 [X86][AVX512] Added BROADCAST intrinsics fast-isel generic IR tests
llvm-svn: 274537
2016-07-05 10:15:14 +00:00
Nemanja Ivanovic 44513e545f [PowerPC] - Legalize vector types by widening instead of integer promotion
This patch corresponds to review:
http://reviews.llvm.org/D20443

It changes the legalization strategy for illegal vector types from integer
promotion to widening. This only applies for vectors with elements of width
that is a multiple of a byte since we have hardware support for vectors with
1, 2, 3, 8 and 16 byte elements.
Integer promotion for vectors is quite expensive on PPC due to the sequence
of breaking apart the vector, extending the elements and reconstituting the
vector. Two of these operations are expensive.
This patch causes between minor and major improvements in performance on most
benchmarks. There are very few benchmarks whose performance regresses. These
regressions can be handled in a subsequent patch with a DAG combine (similar
to how this patch handles int -> fp conversions of illegal vector types).

llvm-svn: 274535
2016-07-05 09:22:29 +00:00
Simon Pilgrim dea33cc2f3 [X86][AVX512] Added VSHUFPD intrinsics fast-isel generic IR tests
llvm-svn: 274534
2016-07-05 09:10:07 +00:00
Simon Pilgrim 8a01915bd2 [X86][AVX512VL] Added VSHUFPD/VSHUFPS intrinsics fast-isel generic IR tests
llvm-svn: 274533
2016-07-05 09:09:41 +00:00
Simon Pilgrim 3ad040909a [X86][AVX512] Add support for lowering shuffles to VSHUFPD
llvm-svn: 274520
2016-07-04 20:41:24 +00:00
James Molloy c3b4ed4a70 Revert "[Thumb] Reapply r272251 with a fix for PR28348"
This reverts commit r274510 - it made green dragon unhappy.

llvm-svn: 274512
2016-07-04 17:14:24 +00:00
James Molloy 9f019835ef [Thumb] Reapply r272251 with a fix for PR28348
We were using DAG->getConstant instead of DAG->getTargetConstant. This meant that we could inadvertently increase the use count of a constant if stars aligned, which it did in this testcase. Increasing the use count of the constant could cause ISel to fall over (because DAGToDAG lowering assumed the constant had only one use!)

Original commit message:
  [Thumb] Select a BIC instead of AND if the immediate can be encoded more optimally negated

  If an immediate is only used in an AND node, it is possible that the immediate can be more optimally materialized when negated. If this is the case, we can negate the immediate and use a BIC instead;

    int i(int a) {
      return a & 0xfffffeec;
    }

  Used to produce:
      ldr r1, [CONSTPOOL]
      ands r0, r1
    CONSTPOOL: 0xfffffeec

  And now produces:
      movs    r1, #255
      adds    r1, #20  ; Less costly immediate generation
      bics    r0, r1

llvm-svn: 274510
2016-07-04 16:35:41 +00:00
Simon Pilgrim 02d435d2f4 [X86][AVX512] Autoupgrade the VPERMPD/VPERMQ intrinsics
llvm-svn: 274506
2016-07-04 14:19:05 +00:00
Simon Pilgrim 8b82fce537 [X86][AVX512] Added VPERMPD/VPERMQ intrinsics fast-isel generic IR tests
llvm-svn: 274503
2016-07-04 13:43:10 +00:00
Simon Pilgrim 9fca300cbe [X86][AVX512] Autoupgrade the VPERMILPD/VPERMILPS intrinsics
llvm-svn: 274498
2016-07-04 12:40:54 +00:00
Simon Pilgrim c8cf2ddb6d [X86][AVX512] Added VPERMILPD/VPERMILPS intrinsics fast-isel generic IR tests
Added PSHUFD tests as well

llvm-svn: 274493
2016-07-04 11:07:50 +00:00
Craig Topper d83f818a3e [CodeGen] Make the code that detects a if a shuffle is really a concatenation of the inputs more general purpose.
We can now handle concatenation of each source multiple times. The previous code just checked for each source to appear once in either order.

This also now handles an entire source vector sized piece having undef indices correctly. We now concat with UNDEF instead of using one of the sources. This is responsible for the test case change.

llvm-svn: 274483
2016-07-04 06:19:35 +00:00
Simon Pilgrim 7f096de0b8 [X86][AVX512] Add support for 512-bit shuffle lowering to VPERMPD/VPERMQ
llvm-svn: 274473
2016-07-03 19:50:06 +00:00
Craig Topper d1eca0f32c [CodeGen] Teach OR combine of shuffles involving zero vectors to better handle undef indices.
Undef indices can now be treated as zeros. Or if its undef ORed with zero, we will keep the undef.

llvm-svn: 274472
2016-07-03 19:37:12 +00:00
Craig Topper 8e826d5abe [X86] Add tests to show that the DAG combine for OR of shuffles with zero vectors doesn't handle undefs as well as it could. Fix coming in another commit.
llvm-svn: 274471
2016-07-03 19:37:10 +00:00
Haicheng Wu b71b2f622a [MBB] add a missing corner case in UpdateTerminator()
After the block placement, if a block ends with a conditional branch, but the
next block is not its successor. The conditional branch should be changed to
unconditional branch.  This patch fixes PR28307, PR28297, PR28402.

Differential Revision: http://reviews.llvm.org/D21811

llvm-svn: 274470
2016-07-03 19:14:17 +00:00
Simon Pilgrim 68ea80649b [X86][AVX512] Add support for VPERMPD/VPERMQ masked shuffle comments
llvm-svn: 274469
2016-07-03 18:40:24 +00:00
Simon Pilgrim a0d73835b2 [X86][AVX512] Add support for 512-bit shuffle decoding of VPERMPD/VPERMQ
llvm-svn: 274468
2016-07-03 18:27:37 +00:00
Simon Pilgrim dbd6db0dc7 [X86][AVX512] Add support for VPALIGNR/PSHUFD/PSHUFHW/PSHUFLW masked shuffle comments
llvm-svn: 274466
2016-07-03 15:00:51 +00:00
Simon Pilgrim 598bdb6bfe [X86][AVX512] Add support for UNPCK masked shuffle comments
llvm-svn: 274464
2016-07-03 14:26:21 +00:00
Simon Pilgrim 1f59076196 [X86][AVX512] Add support for VPERM/VSHUF masked shuffle comments
llvm-svn: 274462
2016-07-03 13:55:41 +00:00
Simon Pilgrim 68f438a036 [X86][AVX512] Add support for PMOVZX masked shuffle comments
llvm-svn: 274461
2016-07-03 13:33:28 +00:00
Simon Pilgrim 7c2fbdc101 [X86][AVX512] Add support for masked shuffle comments
This patch adds support for including the avx512 mask register information in the mask/maskz versions of shuffle instruction comments.

This initial version just adds support for MOVDDUP/MOVSHDUP/MOVSLDUP to reduce the mass of test regenerations, other shuffle instructions can be added in due course.

Differential Revision: http://reviews.llvm.org/D21953

llvm-svn: 274459
2016-07-03 13:08:29 +00:00
Simon Pilgrim 129b720c18 [X86][AVX512] Add support for lowering shuffles to VPERMILPS
llvm-svn: 274458
2016-07-03 12:47:21 +00:00
Simon Pilgrim 99e8a1aa0b [X86][AVX512] Add support for lowering shuffles to VPERMILPD
llvm-svn: 274450
2016-07-02 20:20:12 +00:00
Simon Pilgrim 72052f6de9 [X86][AVX512VL] Add fast-isel MOVDDUP/MOVSLDUP/MOVSHDUP shuffle tests
llvm-svn: 274448
2016-07-02 19:22:46 +00:00
Simon Pilgrim cde7c54baa [X86][AVX512] Add support for 512-bit PSHUFB lowering
llvm-svn: 274444
2016-07-02 18:14:31 +00:00
Simon Pilgrim 77dda7c2e0 [X86][AVX512] Converted the MOVDDUP/MOVSLDUP/MOVSHDUP masked intrinsics to generic IR
llvm-svn: 274443
2016-07-02 17:16:41 +00:00
Simon Pilgrim 19adee9d84 [X86][AVX512] Autoupgrade the MOVDDUP/MOVSLDUP/MOVSHDUP intrinsics
llvm-svn: 274439
2016-07-02 14:42:35 +00:00
Simon Pilgrim f040d8c061 [X86][AVX512] Add support for lowering shuffles to MOVDDUP/MOVSLDUP/MOVSHDUP
llvm-svn: 274436
2016-07-02 12:45:03 +00:00
Simon Pilgrim 5e95390957 [X86][AVX512] Add test cases that should lower to MOVSLDUP/MOVSHDUP
llvm-svn: 274435
2016-07-02 12:20:35 +00:00
Simon Pilgrim a6f262a1f9 [X86][AVX512] Add fast-isel shuffle tests
Its not worth trying to write out tests for all the avx512f builtins yet, just adding tests for lowering of generic IR as we transition to it (shuffles mainly right now).

llvm-svn: 274434
2016-07-02 12:13:29 +00:00
Matt Arsenault accddacb70 TII: Fix inlineasm size counting comments as insts
The main problem was counting comments on their own
line as instructions.

llvm-svn: 274405
2016-07-01 23:26:50 +00:00
Matt Arsenault 7f681ac7a9 AMDGPU: Add feature for unaligned access
llvm-svn: 274398
2016-07-01 23:03:44 +00:00
Matt Arsenault 8af47a09e5 AMDGPU: Expand unaligned accesses early
Due to visit order problems, in the case of an unaligned copy
the legalized DAG fails to eliminate extra instructions introduced
by the expansion of both unaligned parts.

llvm-svn: 274397
2016-07-01 22:55:55 +00:00
Matt Arsenault 327bb5ad82 AMDGPU: Improve load/store of illegal types.
There was a combine before to handle the simple copy case.
Split this into handling loads and stores separately.

We might want to change how this handles some of the vector
extloads, since this can result in large code size increases.

llvm-svn: 274394
2016-07-01 22:47:50 +00:00
Dehao Chen 7b2c997736 Specify mtriple for the frame-order.ll test.
Summary: original test may have different bahavior on different bot, specifically it broke llvm-clang-lld-x86_64-scei-ps4-ubuntu-fast

Reviewers: majnemer

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D21931

llvm-svn: 274368
2016-07-01 17:35:13 +00:00
Dehao Chen ad2b4e1334 Do not count debug instructions when counting number of uses to reorder frame objects.
Summary: The code generation should be independent of the debug info.

Reviewers: zansari, davidxl, mkuper, majnemer

Subscribers: majnemer, llvm-commits

Differential Revision: http://reviews.llvm.org/D21911

llvm-svn: 274357
2016-07-01 15:40:25 +00:00
Nikolay Haustov beb24f5b20 Resubmit r268719 - AMDGPU/SI: Add amdgpu_kernel calling convention. Part 2.
This was reverted in r268740 because of problems with corresponding Clang change.
Clang change was updated and resubmitted in r274220.

Check calling convention in AMDGPUMachineFunction::isKernel

This will be used for AMDGPU_HSA_KERNEL symbol type in output ELF.

Also, in the future unused non-kernels may be optimized.

Reviewers: tstellarAMD, arsenm

Subscribers: arsenm, joker.eph, llvm-commits

Differential Revision: http://reviews.llvm.org/D19917

llvm-svn: 274341
2016-07-01 10:00:58 +00:00
Yunzhong Gao b386955adc Add an artificial line-0 debug location when the compiler emits a call to
__stack_chk_fail(). This avoids a compiler crash.

Differential Revision: http://reviews.llvm.org/D21818

llvm-svn: 274263
2016-06-30 18:49:04 +00:00
Etienne Bergeron 078d8f69b6 revert http://reviews.llvm.org/D21101
llvm-svn: 274251
2016-06-30 17:52:24 +00:00
Etienne Bergeron 47cf4eabe6 [exceptions] Upgrade exception handlers when stack protector is used
Summary:
MSVC provide exception handlers with enhanced information to deal with security buffer feature (/GS).

To be more secure, the security cookies (GS and SEH) are validated when unwinding the stack.

The following code:
```
void f() {}

void foo() {
  __try {
    f();
  } __except(1) {
    f();
  }
}
```

Reviewers: majnemer, rnk

Subscribers: thakis, llvm-commits, chrisha

Differential Revision: http://reviews.llvm.org/D21101

llvm-svn: 274239
2016-06-30 15:36:59 +00:00
Jonas Paulsson 25e193da4c [SystemZ] Let z13 also support FeatureMiscellaneousExtensions.
This processor feature had been left out by mistake from the z13
ProcessorModel.

This time with updated test case. Thanks, Hans.

Reviewed by Ulrich Weigand.

llvm-svn: 274216
2016-06-30 07:13:56 +00:00