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6 years agos/LLVM_ON_WIN32/_WIN32/, llvm
Nico Weber [Sun, 29 Apr 2018 00:45:03 +0000 (00:45 +0000)]
s/LLVM_ON_WIN32/_WIN32/, llvm

LLVM_ON_WIN32 is set exactly with MSVC and MinGW (but not Cygwin) in
HandleLLVMOptions.cmake, which is where _WIN32 defined too.  Just use the
default macro instead of a reinvented one.

See thread "Replacing LLVM_ON_WIN32 with just _WIN32" on llvm-dev and cfe-dev.
No intended behavior change.

This moves over all uses of the macro, but doesn't remove the definition
of it in (llvm-)config.h yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331127 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[LLVM-C] Add DIBuilder bindings to create import declarations
Robert Widmann [Sat, 28 Apr 2018 22:32:07 +0000 (22:32 +0000)]
[LLVM-C] Add DIBuilder bindings to create import declarations

Summary: Add bindings to create import declarations for modules, functions, types, and other entities.  This wraps the conveniences available in the existing DIBuilder API, but these seem C++-specific.

Reviewers: whitequark, harlanhaskins, deadalnix

Reviewed By: whitequark

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D46167

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331123 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Restrict many of the InstAliases to either to only att or intel syntax. NFCI
Craig Topper [Sat, 28 Apr 2018 18:46:11 +0000 (18:46 +0000)]
[X86] Restrict many of the InstAliases to either to only att or intel syntax. NFCI

Many of these aliases exist to give one syntax or the other a slightly different mnemonic and the other variant gets a duplicate of its normal mnemonic

This patch restricts a lot of these to only one variant so we don't get the duplication.

This removes a lot of duplicate entries from the matcher table. It also reduces the number of warnings printed when you enable the ambiguous match warning in tablegen.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331117 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Remove unnecessary rotate-carry folded InstRW overrides.
Simon Pilgrim [Sat, 28 Apr 2018 18:45:16 +0000 (18:45 +0000)]
[X86] Remove unnecessary rotate-carry folded InstRW overrides.

Merge some remaining instregex entries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331116 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[globalisel][legalizerinfo] Introduce dedicated extending loads and add lowerings...
Daniel Sanders [Sat, 28 Apr 2018 18:14:50 +0000 (18:14 +0000)]
[globalisel][legalizerinfo] Introduce dedicated extending loads and add lowerings for them

Summary:
Previously, a extending load was represented at (G_*EXT (G_LOAD x)).
This had a few drawbacks:
* G_LOAD had to be legal for all sizes you could extend from, even if
  registers didn't naturally hold those sizes.
* All sizes you could extend from had to be allocatable just in case the
  extend went missing (e.g. by optimization).
* At minimum, G_*EXT and G_TRUNC had to be legal for these sizes. As we
  improve optimization of extends and truncates, this legality requirement
  would spread without considerable care w.r.t when certain combines were
  permitted.
* The SelectionDAG importer required some ugly and fragile pattern
  rewriting to translate patterns into this style.

This patch begins changing the representation to:
* (G_[SZ]EXTLOAD x)
* (G_LOAD x) any-extends when MMO.getSize() * 8 < ResultTy.getSizeInBits()
which resolves these issues by allowing targets to work entirely in their
native register sizes, and by having a more direct translation from
SelectionDAG patterns.

This patch introduces the new generic instructions and new variation on
G_LOAD and adds lowering for them to convert back to the existing
representations.

Depends on D45466

Reviewers: ab, aditya_nandakumar, bogner, rtereshin, volkan, rovka, aemerson, javed.absar

Reviewed By: aemerson

Subscribers: aemerson, kristof.beyls, javed.absar, llvm-commits

Differential Revision: https://reviews.llvm.org/D45540

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331115 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[LLVM-C] Miscellaneous Cleanups in DIBuilder Bindings
Robert Widmann [Sat, 28 Apr 2018 18:13:39 +0000 (18:13 +0000)]
[LLVM-C] Miscellaneous Cleanups in DIBuilder Bindings

Summary:
* rL328953 does not include bindings for LLVMDIBuilderCreateClassType and LLVMDIBuilderCreateBitFieldMemberType despite declaring their prototypes.  Provide these bindings now.
* Switch to more precise types with specific numeric limits matching the DIBuilder's C++ API.

Reviewers: harlanhaskins, whitequark, deadalnix

Reviewed By: whitequark

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D46168

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331114 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[InstCombine] Canonicalize variable mask in masked merge
Roman Lebedev [Sat, 28 Apr 2018 15:45:07 +0000 (15:45 +0000)]
[InstCombine] Canonicalize variable mask in masked merge

Summary:
Masked merge has a pattern of: `((x ^ y) & M) ^ y`.
But, there is no difference between `((x ^ y) & M) ^ y` and `((x ^ y) & ~M) ^ x`,
We should canonicalize the pattern to non-inverted mask.

https://rise4fun.com/Alive/Yol

Reviewers: spatel, craig.topper

Reviewed By: spatel

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D45664

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331112 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[InstCombine][NFC] Add tests for variable mask canonicalization in masked merge
Roman Lebedev [Sat, 28 Apr 2018 15:45:00 +0000 (15:45 +0000)]
[InstCombine][NFC] Add tests for variable mask canonicalization in masked merge

Summary:
Masked merge has a pattern of: `((x ^ y) & M) ^ y`.
But, there is no difference between `((x ^ y) & M) ^ y` and `((x ^ y) & ~M) ^ x`,
We should canonicalize the pattern to non-inverted mask.

Differential Revision: https://reviews.llvm.org/D45663

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331111 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Remove unnecessary shift/rotate folded InstRW overrides.
Simon Pilgrim [Sat, 28 Apr 2018 15:32:19 +0000 (15:32 +0000)]
[X86] Remove unnecessary shift/rotate folded InstRW overrides.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331110 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[llvm-mca][X86] Add double shift resource tests to all relevant models
Simon Pilgrim [Sat, 28 Apr 2018 15:18:49 +0000 (15:18 +0000)]
[llvm-mca][X86] Add double shift resource tests to all relevant models

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331109 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[llvm-mca][X86] Add shift/rotate resource tests to all relevant models
Simon Pilgrim [Sat, 28 Apr 2018 14:56:18 +0000 (14:56 +0000)]
[llvm-mca][X86] Add shift/rotate resource tests to all relevant models

I intend to add further instruction tests to the resources-x86_64.s test file as required, but this initial commit is to help remove a load of unnecessary InstRW overrides in a future patch

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331108 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86][SSE] Stop hard coding some instruction scheduler classes.
Simon Pilgrim [Sat, 28 Apr 2018 14:08:51 +0000 (14:08 +0000)]
[X86][SSE] Stop hard coding some instruction scheduler classes.

Make these arguments to the multiclass to allow easier specialization.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331107 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86][HW] Cleanup Haswell model. NFCI.
Simon Pilgrim [Sat, 28 Apr 2018 14:06:28 +0000 (14:06 +0000)]
[X86][HW] Cleanup Haswell model. NFCI.

Moved LAHF/SAHF to instrs instead of instregex.

Removed some unnecessary instregex entries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331106 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Remove mayLoad flag from BNDMK/BNDCL/BNDCN/BNDCU.
Craig Topper [Sat, 28 Apr 2018 06:58:27 +0000 (06:58 +0000)]
[X86] Remove mayLoad flag from BNDMK/BNDCL/BNDCN/BNDCU.

The instruction documentation specifically says that these instruction don't access memory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331105 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Change memory operand of BNDMK/BNDCL/BNDCU/BNDCN/BNDST to anymem.
Craig Topper [Sat, 28 Apr 2018 06:58:26 +0000 (06:58 +0000)]
[X86] Change memory operand of BNDMK/BNDCL/BNDCU/BNDCN/BNDST to anymem.

These instruction don't use their memory operands as normal memory operands. They're just used as addresses. They don't have a size because they aren't directly representing a load or store.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331104 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[SCEV] Touch the unsused stats variables for product build.
Serguei Katkov [Sat, 28 Apr 2018 06:41:35 +0000 (06:41 +0000)]
[SCEV] Touch the unsused stats variables for product build.

This is a fix by elimination compiler warnings considered as errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331103 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Remove REX.W from 64-bit mode BND instructions.
Craig Topper [Sat, 28 Apr 2018 06:02:40 +0000 (06:02 +0000)]
[X86] Remove REX.W from 64-bit mode BND instructions.

As far as I can tell from the docs, the instructions are automatically 64-bit in 64-bit mode. We don't need REX.W.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331102 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Rename BNDMOV instructions and hide redundant instruction encoding from the...
Craig Topper [Sat, 28 Apr 2018 06:02:39 +0000 (06:02 +0000)]
[X86] Rename BNDMOV instructions and hide redundant instruction encoding from the assembler.

Favor the 0x1a encoding for register/register move to match gas.

The instructions used RM and MR in their name along with rr/rm/mr at the end. To make more consistent with other instructions remove the RM/MR and use rr/rm/mr/rr_REV.

Hide the _REV encoding from the assembler but leave it for the disassembler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331101 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[NFC] Add some tests that demonstrate unrecognized three-way comparison patterns
Max Kazantsev [Sat, 28 Apr 2018 04:38:21 +0000 (04:38 +0000)]
[NFC] Add some tests that demonstrate unrecognized three-way comparison patterns

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331100 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[SCEV] Reduce the number of invocation to non trivial getExact function
Serguei Katkov [Sat, 28 Apr 2018 03:53:36 +0000 (03:53 +0000)]
[SCEV] Reduce the number of invocation to non trivial getExact function

The invocation of getExact in ScalarEvolution::getBackedgeTakenInfo is used
only for getting statistic and for assert.
Even if statistics is disabled, the code related to it will be eliminated
the invocation to getExact itself will not be eliminated
because it may have side-effects like creation of new SCEVs.

So do invocation only when we collect statistics or executes asserts.

Reviewers: mkazantsev, sanjoy, javed.absar
Reviewed By: javed.absar
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D46178

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331099 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[MachineOutliner] Add defs to calls + don't track liveness on outlined functions
Jessica Paquette [Fri, 27 Apr 2018 23:36:35 +0000 (23:36 +0000)]
[MachineOutliner] Add defs to calls + don't track liveness on outlined functions

This commit makes it so that if you outline a def of some register, then the
call instruction created by the outliner actually reflects that the register
is defined by the call. It also makes it so that outlined functions don't
have the TracksLiveness property.

Outlined calls shouldn't break liveness assumptions that someone might make.

This also un-XFAILs the noredzone test, and updates the calls test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331095 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[LoopGuardWidening] Make PostDomTree optional
Philip Reames [Fri, 27 Apr 2018 23:15:56 +0000 (23:15 +0000)]
[LoopGuardWidening] Make PostDomTree optional

The effect of doing so is not disrupting the LoopPassManager when mixing this pass with other loop passes.  This should help locality of access substaintially and avoids the cost of computing PostDom.

The assumption here is that the full GuardWidening (which does use PostDom) is run as a canonicalization before loop opts and that this version is just catching cases exposed by other loop passes.  (i.e. LoopPredication, IndVarSimplify, LoopUnswitch, etc..)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331094 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[DAGCombiner] Fix a case of 1 in non-splat vector pow2 divisor
Heejin Ahn [Fri, 27 Apr 2018 22:23:11 +0000 (22:23 +0000)]
[DAGCombiner] Fix a case of 1 in non-splat vector pow2 divisor

Summary:
D42479 (rL329525) enabled SDIV combine for pow2 non-splat vector
dividers. But when there is a 1 in a vector, the instruction sequence to
be generated involves shifting a value by the number of its bit widths,
which is undefined
(https://github.com/llvm-mirror/llvm/blob/c64f4dbfe31e509f9c1092b951e524b056245af8/lib/CodeGen/SelectionDAG/DAGCombiner.cpp#L6000-L6006).

Especially, in architectures that do not support vector instructions,
each of element in a vector will be computed separately using scalar
operations, and then the resulting value will be undef for '1' values
in a vector.

(All 1's vector is fine; only vectors mixed with 1 and others will be
affected.)

Reviewers: RKSimon, jgravelle-google

Subscribers: jfb, dschuff, sbc100, jgravelle-google, llvm-commits

Differential Revision: https://reviews.llvm.org/D46161

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331092 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Make the STTNI flag intrinsics use the flags from pcmpestrm/pcmpistrm if the...
Craig Topper [Fri, 27 Apr 2018 22:15:33 +0000 (22:15 +0000)]
[X86] Make the STTNI flag intrinsics use the flags from pcmpestrm/pcmpistrm if the mask instrinsics are also used in the same basic block.

Summary:
Previously the flag intrinsics always used the index instructions even if a mask instruction also exists.

To fix fix this I've created a single ISD node type that returns index, mask, and flags. The SelectionDAG CSE process will merge all flavors of intrinsics with the same inputs to a s ingle node. Then during isel we just have to look at which results are used to know what instruction to generate. If both mask and index are used we'll need to emit two instructions. But for all other cases we can emit a single instruction.

Since I had to do manual isel anyway, I've removed the pseudo instructions and custom inserter code that was working around tablegen limitations with multiple implicit defs.

I've also renamed the recently added sse42.ll test case to sttni.ll since it focuses on that subset of the sse4.2 instructions.

Reviewers: chandlerc, RKSimon, spatel

Reviewed By: chandlerc

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D46202

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331091 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFix a bug that prevents global variables from having a DW_OP_deref.
Adrian Prantl [Fri, 27 Apr 2018 22:05:31 +0000 (22:05 +0000)]
Fix a bug that prevents global variables from having a DW_OP_deref.

For local variables the first DW_OP_deref is consumed by turning the
location kind into a memeory location, but that only makes sense for
values that are in a register to begin with, which cannot happen for
global variables that are attached to a symbol.

rdar://problem/39741860

This reapplies r330970 after fixing an uncovered bug in r331086 and
working around the situation caused by it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331090 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[FastISel] Actually enable local value sinking by default
Reid Kleckner [Fri, 27 Apr 2018 21:51:25 +0000 (21:51 +0000)]
[FastISel] Actually enable local value sinking by default

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331088 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[FastISel] Fix local value sinking algorithmic complexity
Reid Kleckner [Fri, 27 Apr 2018 21:48:51 +0000 (21:48 +0000)]
[FastISel] Fix local value sinking algorithmic complexity

Now local value sinking only scans and numbers instructions added
between the current flush point and the last flush point. This ensures
that ISel is overall linear in the size of the BB.

Fixes PR37010 and re-enables local value sinking by default.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331087 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFix a bug in GlobalOpt's handling of DIExpressions.
Adrian Prantl [Fri, 27 Apr 2018 21:41:36 +0000 (21:41 +0000)]
Fix a bug in GlobalOpt's handling of DIExpressions.

This patch adds support for fragment expressions
TryToShrinkGlobalToBoolean() which were previously just dropped.

Thanks to Reid Kleckner for providing me a reproducer!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331086 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[PatternMatch] Stabilize the matching order of commutative matchers
Roman Lebedev [Fri, 27 Apr 2018 21:23:20 +0000 (21:23 +0000)]
[PatternMatch] Stabilize the matching order of commutative matchers

Summary:
Currently, we
1. match `LHS` matcher to the `first` operand of binary operator,
2. and then match `RHS` matcher to the `second` operand of binary operator.
If that does not match, we swap the `LHS` and `RHS` matchers:
1. match `RHS` matcher to the `first` operand of binary operator,
2. and then match `LHS` matcher to the `second` operand of binary operator.

This works ok.
But it complicates writing of commutative matchers, where one would like to match
(`m_Value()`) the value on one side, and use (`m_Specific()`) it on the other side.

This is additionally complicated by the fact that `m_Specific()` stores the `Value *`,
not `Value **`, so it won't work at all out of the box.

The last problem is trivially solved by adding a new `m_c_Specific()` that stores the
`Value **`, not `Value *`. I'm choosing to add a new matcher, not change the existing
one because i guess all the current users are ok with existing behavior,
and this additional pointer indirection may have performance drawbacks.
Also, i'm storing pointer, not reference, because for some mysterious-to-me reason
it did not work with the reference.

The first one appears trivial, too.
Currently, we
1. match `LHS` matcher to the `first` operand of binary operator,
2. and then match `RHS` matcher to the `second` operand of binary operator.
If that does not match, we swap the ~~`LHS` and `RHS` matchers~~ **operands**:
1. match ~~`RHS`~~ **`LHS`** matcher to the ~~`first`~~ **`second`** operand of binary operator,
2. and then match ~~`LHS`~~ **`RHS`** matcher to the ~~`second`~ **`first`** operand of binary operator.

Surprisingly, `$ ninja check-llvm` still passes with this.
But i expect the bots will disagree..

The motivational unittest is included.
I'd like to use this in D45664.

Reviewers: spatel, craig.topper, arsenm, RKSimon

Reviewed By: craig.topper

Subscribers: xbolva00, wdng, llvm-commits

Differential Revision: https://reviews.llvm.org/D45828

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331085 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Merge some x87 instruction instregex single matches. NFCI.
Simon Pilgrim [Fri, 27 Apr 2018 21:14:19 +0000 (21:14 +0000)]
[X86] Merge some x87 instruction instregex single matches. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331084 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Reassociate] add a test with debug info; NFC
Sanjay Patel [Fri, 27 Apr 2018 21:14:15 +0000 (21:14 +0000)]
[Reassociate] add a test with debug info; NFC

As suggested in D45842
(although still not sure if we're going to advance that),
we must invalidate references to instructions that have
been recycled (operands were changed, so result is different).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331083 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAttempt to fix remaining build failures after r331071 by changing the tuple to a...
Daniel Sanders [Fri, 27 Apr 2018 21:03:27 +0000 (21:03 +0000)]
Attempt to fix remaining build failures after r331071 by changing the tuple to a struct

Some of the bots were failing in a different way to the others. These were
unable to compare tuples. Fix this by changing to a struct, thereby avoiding
the quirks of tuples.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331081 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[LICM] Reduce nesting with an early return [NFC]
Philip Reames [Fri, 27 Apr 2018 20:58:30 +0000 (20:58 +0000)]
[LICM] Reduce nesting with an early return [NFC]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331080 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[MustExecute/LICM] Special case first instruction in throwing header
Philip Reames [Fri, 27 Apr 2018 20:44:01 +0000 (20:44 +0000)]
[MustExecute/LICM] Special case first instruction in throwing header

We currently have a hard to solve analysis problem around the order of instructions within a potentially throwing block.  We can't cheaply determine whether a given instruction is before the first potential throw in the block.  While we're working on that in the background, special case the first instruction within the header.

why this particular special case?  Well, headers are guaranteed to execute if the loop does, and it turns out we tend to produce this form in practice.

In a follow on patch, I tend to extend LICM with an alternate approach which works for any instruction in the header before the first throw, but this is the best I can come up with other users of the analysis (such as store promotion.)

Note: I can't show the difference in the analysis result since we're ORing in the expensive instruction walk used by SCEV.  Using the full walk is not suitable for a general solution.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331079 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoELFObjectWriter: Allow one unique symver per symbol
Vlad Tsyrklevich [Fri, 27 Apr 2018 20:32:34 +0000 (20:32 +0000)]
ELFObjectWriter: Allow one unique symver per symbol

Summary:
Only allow a single unique .symver alias per symbol. This matches the
behavior of gas. I noticed that we ignored multiple mismatched symver
directives looking at https://reviews.llvm.org/D45798

Reviewers: pcc, tejohnson, espindola

Reviewed By: pcc

Subscribers: emaste, arichardson, llvm-commits, kcc

Differential Revision: https://reviews.llvm.org/D45845

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331078 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[LV] Common duplicate vector load/store address calculation (NFC)
Daniel Neilson [Fri, 27 Apr 2018 20:29:18 +0000 (20:29 +0000)]
[LV] Common duplicate vector load/store address calculation (NFC)

Summary:
Commoning some obviously copy/paste code in
InnerLoopVectorizer::vectorizeMemoryInstruction

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331076 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAttempt to fix build failure after r331071 using std::make_tuple
Daniel Sanders [Fri, 27 Apr 2018 20:17:44 +0000 (20:17 +0000)]
Attempt to fix build failure after r331071 using std::make_tuple

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331074 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[PostRASink] extend the live-in check for all aliased registers
Jun Bum Lim [Fri, 27 Apr 2018 19:59:20 +0000 (19:59 +0000)]
[PostRASink] extend the live-in check for all aliased registers

Extend the live-in check for all aliased registers so that we can
allow sinking Copy instructions when only implicit def is in successor's
live-in.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331072 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[globalisel][legalizerinfo] Add support for legalization based on the MachineMemOperand
Daniel Sanders [Fri, 27 Apr 2018 19:48:53 +0000 (19:48 +0000)]
[globalisel][legalizerinfo] Add support for legalization based on the MachineMemOperand

Summary:
Currently only the memory size is supported but others can be added as
needed.

narrowScalar for G_LOAD and G_STORE now correctly update the
MachineMemOperand and will refuse to legalize atomics since those need more
careful expansions to maintain atomicity.

Reviewers: ab, aditya_nandakumar, bogner, rtereshin, aemerson, javed.absar

Reviewed By: aemerson

Subscribers: aemerson, rovka, kristof.beyls, javed.absar, llvm-commits

Differential Revision: https://reviews.llvm.org/D45466

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331071 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[llvm-objcopy] Add --weaken-symbol (-W) option
Paul Semel [Fri, 27 Apr 2018 19:16:27 +0000 (19:16 +0000)]
[llvm-objcopy] Add --weaken-symbol (-W) option

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331070 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[llvm-objcopy] Add --globalize-symbol option
Paul Semel [Fri, 27 Apr 2018 19:09:44 +0000 (19:09 +0000)]
[llvm-objcopy] Add --globalize-symbol option

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331068 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[CodeGen] Use RegUnits to track register aliases (NFC)
Jun Bum Lim [Fri, 27 Apr 2018 18:44:37 +0000 (18:44 +0000)]
[CodeGen] Use RegUnits to track register aliases (NFC)

Summary: Use RegUnits to track register aliases in PostRASink and AArch64LoadStoreOptimizer.

Reviewers: thegameg, mcrosier, gberry, qcolombet, sebpop, MatzeB, t.p.northover, javed.absar

Reviewed By: thegameg, sebpop

Subscribers: javed.absar, llvm-commits, kristof.beyls

Differential Revision: https://reviews.llvm.org/D45695

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331066 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Split WriteFBlend/WriteFVarBlend/WriteFVarShuffle into XMM and YMM/ZMM schedule...
Simon Pilgrim [Fri, 27 Apr 2018 18:19:48 +0000 (18:19 +0000)]
[X86] Split WriteFBlend/WriteFVarBlend/WriteFVarShuffle into XMM and YMM/ZMM scheduler classes

This removes all the WriteFBlend/WriteFVarBlend InstRW overrides - some WriteFVarShuffle remain to be fixed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331065 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[AMDGPU][Waitcnt] Update a few tests to use default waitcnt pass (si-insert-waitcnts...
Mark Searles [Fri, 27 Apr 2018 17:59:15 +0000 (17:59 +0000)]
[AMDGPU][Waitcnt] Update a few tests to use default waitcnt pass (si-insert-waitcnts) rather than old pass (si-insert-waits); this is a small step towards the overall goal of removing the old waitcnt pass, which is no longer maintained.

Differential Revision: https://reviews.llvm.org/D46154

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331062 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[GuardWidening] Add some clarifying comments about heuristics [NFC]
Philip Reames [Fri, 27 Apr 2018 17:41:37 +0000 (17:41 +0000)]
[GuardWidening] Add some clarifying comments about heuristics [NFC]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331061 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[LoopGuardWidening] Split out a loop pass version of GuardWidening
Philip Reames [Fri, 27 Apr 2018 17:29:10 +0000 (17:29 +0000)]
[LoopGuardWidening] Split out a loop pass version of GuardWidening

The idea is to have a pass which performs the same transformation as GuardWidening, but can be run within a loop pass manager without disrupting the pass manager structure.  As demonstrated by the test case, this doesn't quite get there because of issues with post dom, but it gives a good step in the right direction.  the motivation is purely to reduce compile time since we can now preserve locality during the loop walk.

This patch only includes a legacy pass.  A follow up will add a new style pass as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331060 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[docs] add fp-cast-overflow-workaround options to release notes
Sanjay Patel [Fri, 27 Apr 2018 16:33:35 +0000 (16:33 +0000)]
[docs] add fp-cast-overflow-workaround options to release notes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331059 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[MC] Undo spurious commit added into r331052.
Nirav Dave [Fri, 27 Apr 2018 16:16:06 +0000 (16:16 +0000)]
[MC] Undo spurious commit added into r331052.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331055 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Split WriteFHadd into XMM and YMM/ZMM scheduler classes
Simon Pilgrim [Fri, 27 Apr 2018 16:11:57 +0000 (16:11 +0000)]
[X86] Split WriteFHadd into XMM and YMM/ZMM scheduler classes

This removes all the HADD/HSUB PS/PD InstRW overrides.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331054 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[MC] Provide default value for IsResolved.
Nirav Dave [Fri, 27 Apr 2018 16:11:24 +0000 (16:11 +0000)]
[MC] Provide default value for IsResolved.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331052 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86][AVX] Split WriteFLogic into XMM and YMM/ZMM scheduler classes
Simon Pilgrim [Fri, 27 Apr 2018 15:50:33 +0000 (15:50 +0000)]
[X86][AVX] Split WriteFLogic into XMM and YMM/ZMM scheduler classes

This removes all the AND/ANDN/OR/XOR PS/PD InstRW overrides.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331051 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[mips] Analyze and provide selection patterns microMIPSR6 branches
Simon Dardis [Fri, 27 Apr 2018 15:49:49 +0000 (15:49 +0000)]
[mips] Analyze and provide selection patterns microMIPSR6 branches

These branches were previously unanalyzable and unselectable. Add them and
recognize how to generate their inverses.

Reviewers: smaksimovic, atanasyan, abeserminji

Differential Revision: https://reviews.llvm.org/D46113

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331050 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[MC] Modify MCAsmStreamer to always build MCAssembler. NFCI.
Nirav Dave [Fri, 27 Apr 2018 15:45:54 +0000 (15:45 +0000)]
[MC] Modify MCAsmStreamer to always build MCAssembler. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331048 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[MC] Allow MCAssembler to be constructed without all subcomponents. NFCI.
Nirav Dave [Fri, 27 Apr 2018 15:45:27 +0000 (15:45 +0000)]
[MC] Allow MCAssembler to be constructed without all subcomponents. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331047 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[AArch64] Place the first ldp at the end when ReverseCSRRestoreSeq is true
Francis Visoiu Mistrih [Fri, 27 Apr 2018 15:30:54 +0000 (15:30 +0000)]
[AArch64] Place the first ldp at the end when ReverseCSRRestoreSeq is true

Put the first ldp at the end, so that the load-store optimizer can run
and merge the ldp and the add into a post-index ldp.

This didn't work in case no frame was needed and resulted in code size
regressions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331044 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[CMake] Enable warnings for runtimes
Kostya Kortchinsky [Fri, 27 Apr 2018 15:10:50 +0000 (15:10 +0000)]
[CMake] Enable warnings for runtimes

Summary:
`HandleLLVMOptions` adds `-w` to the cflags if `LLVM_ENABLE_WARNINGS` is not on.
With `-w`, `check_cxx_compiler_flag` doesn't error out for unsupported flags
(for example `-mcrc` on x86_64), and those flags end up being detected as
working - and really they aren't.

I am not entirely sure what the best way to solve this is, but setting
`LLVM_ENABLE_WARNINGS` prior to including `HandleLLVMOptions` does the job.

Reviewers: phosek, beanz

Reviewed By: phosek

Subscribers: mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D46079

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331042 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[SystemZ] Remove scheduling info from some Pseudo instructions (NFC).
Jonas Paulsson [Fri, 27 Apr 2018 14:09:03 +0000 (14:09 +0000)]
[SystemZ]  Remove scheduling info from some Pseudo instructions (NFC).

If the MachineInstr uses a custom inserter and is then erased after
instruction selection, there is no use for mapping it to a sched class.

Review: Ulrich Weigand

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331040 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[LoopInterchange] Allow some loops with PHI nodes in the exit block.
Florian Hahn [Fri, 27 Apr 2018 13:52:51 +0000 (13:52 +0000)]
[LoopInterchange] Allow some loops with PHI nodes in the exit block.

We currently support LCSSA PHI nodes in the outer loop exit, if their
incoming values do not come from the outer loop latch or if the
outer loop latch has a single predecessor. In that case, the outer loop latch
will be executed only if the inner loop gets executed. If we have multiple
predecessors for the outer loop latch, it may be executed even if the inner
loop does not get executed.

This is a first step to support the case described in
https://bugs.llvm.org/show_bug.cgi?id=30472

Reviewers: efriedma, karthikthecool, mcrosier

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D43237

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331037 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[AArch64] Codegen for v8.2A dot product intrinsics
Oliver Stannard [Fri, 27 Apr 2018 13:45:32 +0000 (13:45 +0000)]
[AArch64] Codegen for v8.2A dot product intrinsics

This adds IR intrinsics for the AArch64 dot-product instructions introduced in
v8.2-A.

Differential revisioon: https://reviews.llvm.org/D46107

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331036 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[NVPTX] Turn on Loop/SLP vectorization
Benjamin Kramer [Fri, 27 Apr 2018 13:36:05 +0000 (13:36 +0000)]
[NVPTX] Turn on Loop/SLP vectorization

Since PTX has grown a <2 x half> datatype vectorization has become more
important. The late LoadStoreVectorizer intentionally only does loads
and stores, but now arithmetic has to be vectorized for optimal
throughput too.

This is still very limited, SLP vectorization happily creates <2 x half>
if it's a legal type but there's still a lot of register moving
happening to get that fed into a vectorized store. Overall it's a small
performance win by reducing the amount of arithmetic instructions.

I haven't really checked what the loop vectorizer does to PTX code, the
cost model there might need some more tweaks. I didn't see it causing
harm though.

Differential Revision: https://reviews.llvm.org/D46130

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331035 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[X86] Replace some system instruction instregex single matches with instrs entry...
Simon Pilgrim [Fri, 27 Apr 2018 13:32:42 +0000 (13:32 +0000)]
[X86] Replace some system instruction instregex single matches with instrs entry. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331034 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[mips] Fix how compiler fuse instructions to fmadd/fmsub
Aleksandar Beserminji [Fri, 27 Apr 2018 13:30:27 +0000 (13:30 +0000)]
[mips] Fix how compiler fuse instructions to fmadd/fmsub

This patch makes compiler does not fuse fmul and fadd/fsub into
fmadd/fmsub by default. Instead, -fp-contract=fast option can
be used when such behavior is desired.

Differential Revision: https://reviews.llvm.org/D46057

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331033 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[ARM] Codegen for v8.2A dot product intrinsics
Oliver Stannard [Fri, 27 Apr 2018 12:50:40 +0000 (12:50 +0000)]
[ARM] Codegen for v8.2A dot product intrinsics

This adds IR intrinsics for the ARM dot-product instructions introduced in
v8.2-A.

Differential revision: https://reviews.llvm.org/D46106

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331032 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[RISCV] Add remat.ll test case
Alex Bradbury [Fri, 27 Apr 2018 11:50:30 +0000 (11:50 +0000)]
[RISCV] Add remat.ll test case

This test case demonstrates suboptimal codegen due to the fact that simple
constants aren't recognised as rematerialisable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331028 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[ARM] Enable misched for R52.
David Green [Fri, 27 Apr 2018 11:29:49 +0000 (11:29 +0000)]
[ARM] Enable misched for R52.

Back when the R52 schedule was added in rL286949, there was no way
to enable machine schedules in ARM for specific cores. Since then a
target feature has been added. This enables the feature for R52,
removing the need to manually specify compiler flags.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331027 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[IR] Do not assume that function pointers are aligned
Mikhail Maltsev [Fri, 27 Apr 2018 09:12:12 +0000 (09:12 +0000)]
[IR] Do not assume that function pointers are aligned

Summary:
The value tracking analysis uses function alignment to infer that the
least significant bits of function pointers are known to be zero.
Unfortunately, this is not correct for ARM targets: the least
significant bit of a function pointer stores the ARM/Thumb state
information (i.e., the LSB is set for Thumb functions and cleared for
ARM functions).

The original approach (https://reviews.llvm.org/D44781) introduced a
new field for function pointer alignment in the DataLayout structure
to address this. But it seems unlikely that optimizations based on
function pointer alignment would bring much benefit in practice to
justify the additional maintenance burden, so this patch simply
assumes that function pointer alignment is always unknown.

Reviewers: javed.absar, efriedma

Reviewed By: efriedma

Subscribers: kristof.beyls, llvm-commits, hfinkel, rogfer01

Differential Revision: https://reviews.llvm.org/D46110

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331025 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[mips] Add support for Virtualization ASE
Petar Jovanovic [Fri, 27 Apr 2018 09:12:08 +0000 (09:12 +0000)]
[mips] Add support for Virtualization ASE

This includes

  Instructions: tlbginv, tlbginvf, tlbgp, tlbgr, tlbgwi, tlbgwr, hypcall
                mfgc0, mtgc0, mfhgc0, mthgc0, dmfgc0, dmtgc0,

  Assembler directives: .set virt, .set novirt, .module virt, .module novirt

  Attribute: virt

  .MIPS.abiflags: VZ (0x100)

Patch by Vladimir Stefanovic.

Differential Revision: https://reviews.llvm.org/D44905

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331024 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[SCEV] Add trivial case handling for umin utilities. NFC.
Serguei Katkov [Fri, 27 Apr 2018 08:02:50 +0000 (08:02 +0000)]
[SCEV] Add trivial case handling for umin utilities. NFC.

Reviewers: sanjoy, mkazantsev
Reviewed By: mkazantsev
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D46175

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331022 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[SCEV] Introduce bulk umin creation utilities
Serguei Katkov [Fri, 27 Apr 2018 03:56:53 +0000 (03:56 +0000)]
[SCEV] Introduce bulk umin creation utilities

Add new umin creation method which accepts a list of operands.

SCEV does not represents umin which is required in getExact, so
it transforms umin to umax with not. As a result the transformation of
tree of max to max with several operands does not work.
We just use the new introduced method for creation umin from several operands.

Reviewers: sanjoy, mkazantsev
Reviewed By: sanjoy
Subscribers: javed.absar, llvm-commits
Differential Revision: https://reviews.llvm.org/D46047

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331015 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoRevert "[SimplifyLibcalls] Replace locked IO with unlocked IO"
Matt Morehouse [Fri, 27 Apr 2018 01:48:09 +0000 (01:48 +0000)]
Revert "[SimplifyLibcalls] Replace locked IO with unlocked IO"

This reverts r331002 due to sanitizer bot breakage.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331011 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[LowerTypeTests] Mark .cfi.jumptable nounwind.
Eli Friedman [Fri, 27 Apr 2018 00:32:24 +0000 (00:32 +0000)]
[LowerTypeTests] Mark .cfi.jumptable nounwind.

It doesn't unwind, and the wrong marking leads to the creation of an
.eh_frame section when it isn't necessary.

Differential Revision: https://reviews.llvm.org/D46082

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331008 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[MachineOutliner] Don't outline from functions with a section marking.
Eli Friedman [Fri, 27 Apr 2018 00:21:34 +0000 (00:21 +0000)]
[MachineOutliner] Don't outline from functions with a section marking.

The program might have unusual expectations for functions; for example,
the Linux kernel's build system warns if it finds references from .text
to .init.data.

I'm not sure this is something we actually want to make any guarantees
about (there isn't any explicit rule that would disallow outlining
in this case), but we might want to be conservative anyway.

Differential Revision: https://reviews.llvm.org/D46091

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331007 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agotypo
Sam Clegg [Fri, 27 Apr 2018 00:17:24 +0000 (00:17 +0000)]
typo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331006 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[WebAssembly] Section symbols must have local binding
Sam Clegg [Fri, 27 Apr 2018 00:17:21 +0000 (00:17 +0000)]
[WebAssembly] Section symbols must have local binding

Summary: Also test for symbols information in test/MC/WebAssembly/debug-info.ll.

Subscribers: jfb, dschuff, jgravelle-google, aheejin, sunfish, JDevlieghere, llvm-commits

Differential Revision: https://reviews.llvm.org/D46160

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331005 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[SimplifyLibcalls] Replace locked IO with unlocked IO
David Bolvansky [Thu, 26 Apr 2018 22:31:43 +0000 (22:31 +0000)]
[SimplifyLibcalls] Replace locked IO with unlocked IO

Summary: If file stream arg is not captured and source is fopen, we could replace IO calls by unlocked IO ("_unlocked" function variants) to gain better speed,

Reviewers: efriedma, RKSimon, spatel, sanjoy, hfinkel, majnemer

Subscribers: lebedev.ri, llvm-commits

Differential Revision: https://reviews.llvm.org/D45736

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331002 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[MCA] [NFC] Remove unused Index formal from ResourceManager::issueInstruction
Matt Davis [Thu, 26 Apr 2018 22:30:40 +0000 (22:30 +0000)]
[MCA] [NFC] Remove unused Index formal from ResourceManager::issueInstruction

Summary: The instruction index was never referenced in the body.  Just a minor cleanup.

Reviewers: andreadb

Reviewed By: andreadb

Subscribers: javed.absar, gbedwell, llvm-commits

Differential Revision: https://reviews.llvm.org/D46142

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331001 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[Docs] Escape the @ symbol, so that it appears in documentation output. [NFC]
Matt Davis [Thu, 26 Apr 2018 21:55:45 +0000 (21:55 +0000)]
[Docs] Escape the @ symbol, so that it appears in documentation output. [NFC]

Summary:
The '@' character is a special character in Doxygen.  In a handful of cases we were not escaping this character which resulted in llvm intrinsics not being rendered properly.  Specifically, the @llvm part was removed.

For example, see https://llvm.org/doxygen/classllvm_1_1AssumptionCache.html.  There are a few references to '.assume' without the @llvm. prefix.  This patch corrects this.

Reviewers: sanjoy

Reviewed By: sanjoy

Subscribers: llvm-commits, sanjoy

Differential Revision: https://reviews.llvm.org/D45981

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330998 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[x86] Revert r330322 (& r330323): Lowering x86 adds/addus/subs/subus intrinsics
Chandler Carruth [Thu, 26 Apr 2018 21:46:01 +0000 (21:46 +0000)]
[x86] Revert r330322 (& r330323): Lowering x86 adds/addus/subs/subus intrinsics

The LLVM commit introduces a crash in LLVM's instruction selection.

I filed http://llvm.org/PR37260 with the test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330997 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[InstCombine][NFC] Regenerate checks in or-xor.ll
Roman Lebedev [Thu, 26 Apr 2018 21:41:56 +0000 (21:41 +0000)]
[InstCombine][NFC] Regenerate checks in or-xor.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330996 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFix WAsm dwarfdump.ll test on Windows
Reid Kleckner [Thu, 26 Apr 2018 21:13:59 +0000 (21:13 +0000)]
Fix WAsm dwarfdump.ll test on Windows

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330995 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[InstCombine][NFC] Regenerate checks in and-or-not.ll
Roman Lebedev [Thu, 26 Apr 2018 21:13:09 +0000 (21:13 +0000)]
[InstCombine][NFC] Regenerate checks in and-or-not.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330994 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoRevert "Fix a bug that prevents global variables from having a DW_OP_deref."
Adrian Prantl [Thu, 26 Apr 2018 20:59:58 +0000 (20:59 +0000)]
Revert "Fix a bug that prevents global variables from having a DW_OP_deref."

This reverts commit r3309704 while investigating bot breakage.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330993 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[InstCombine] Simplify Add with remainder expressions as operands.
Sanjoy Das [Thu, 26 Apr 2018 20:52:28 +0000 (20:52 +0000)]
[InstCombine] Simplify Add with remainder expressions as operands.

Summary:
Simplify integer add expression X % C0 + (( X / C0 ) % C1) * C0 to
X % (C0 * C1).  This is a common pattern seen in code generated by the XLA
GPU backend.

Add test cases for this new optimization.

Patch by Bixia Zheng!

Reviewers: sanjoy

Reviewed By: sanjoy

Subscribers: efriedma, craig.topper, lebedev.ri, llvm-commits, jlebar

Differential Revision: https://reviews.llvm.org/D45976

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330992 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAdd test cases to prepare for the optimization that simplifies Add with
Sanjoy Das [Thu, 26 Apr 2018 20:52:27 +0000 (20:52 +0000)]
Add test cases to prepare for the optimization that simplifies Add with
remainder expressions as operands.

Summary:
Add test cases to prepare for the new optimization that Simplifies integer add
expression X % C0 + (( X / C0 ) % C1) * C0 to X % (C0 * C1).

Patch by Bixia Zheng!

Reviewers: sanjoy

Reviewed By: sanjoy

Subscribers: jlebar, llvm-commits

Differential Revision: https://reviews.llvm.org/D46017

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330991 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[GlobalISel] Reporting rules covered as part of the InstructionSelect's debug-only...
Roman Tereshin [Thu, 26 Apr 2018 20:22:17 +0000 (20:22 +0000)]
[GlobalISel] Reporting rules covered as part of the InstructionSelect's debug-only printing

The main goal of this change is to make it much easier to track which
rules are actually covered by Testgen'erated regression tests.

Reviewers: aemerson, dsanders

Differential Revision: https://reviews.llvm.org/D46095

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330988 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[InstCombine][NFC] add2.ll: add a few commutative checks.
Roman Lebedev [Thu, 26 Apr 2018 20:07:17 +0000 (20:07 +0000)]
[InstCombine][NFC] add2.ll: add a few commutative checks.

Fixes some missing test coverage in InstCombineAddSub.cpp, visitAdd()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330986 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[InstCombine][NFC] Autogenerate checks in add2.ll
Roman Lebedev [Thu, 26 Apr 2018 20:07:12 +0000 (20:07 +0000)]
[InstCombine][NFC] Autogenerate checks in add2.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330985 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[mips] Accept 32-bit offsets for lb and lbu commands
Simon Atanasyan [Thu, 26 Apr 2018 19:55:28 +0000 (19:55 +0000)]
[mips] Accept 32-bit offsets for lb and lbu commands

`lb` and `lbu` commands accepts 16-bit signed offsets. But GAS accepts
larger offsets for these commands. If an offset does not fit in 16-bit
range, `lb` command is translated into lui/lb or lui/addu/lb series.
It's interesting that initially LLVM assembler supported this feature,
but later it was broken.

This patch restores support for 32-bit offsets. It replaces `mem_simm16`
operand for `LB` and `LBu` definitions by the new `mem_simmptr` operand.
This operand is intended to check that offset fits to the same size as
using for pointers. Later we will be able to extend this rule and
accepts 64-bit offsets when it is possible.

Some issues remain:
- The regression also affects LD, SD, LH, LHU commands. I'm going
  to fix them by a separate patch.

- GAS accepts any 32-bit values as an offset. Now LLVM accepts signed
  16-bit values and this patch extends the range to signed 32-bit offsets.
  In other words, the following code accepted by GAS and still triggers
  an error by LLVM:
```
  lb      $4, 0x80000004

  # gas
  lui     a0, 0x8000
    lb      a0, 4(a0)
```

- In case of 64-bit pointers GAS accepts a 64-bit offset and translates
  it to the li/dsll/lb series of commands. LLVM still rejects it.
  Probably this feature has never been implemented in LLVM. This issue
  is for a separate patch.
```
  lb      $4, 0x800000001

  # gas
  li      a0, 0x8000
  dsll    a0, a0, 0x14
  lb      a0, 4(a0)
```

Differential Revision: https://reviews.llvm.org/D45020

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330983 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[WebAssembly] Write DWARF data into wasm object file
Sam Clegg [Thu, 26 Apr 2018 19:27:28 +0000 (19:27 +0000)]
[WebAssembly] Write DWARF data into wasm object file

- Writes ".debug_XXX" into corresponding custom sections.
- Writes relocation records into "reloc.debug_XXX" sections.

Patch by Yury Delendik!

Differential Revision: https://reviews.llvm.org/D44184

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330982 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoDAG: Fix not legalizing vector fcanonicalizes
Matt Arsenault [Thu, 26 Apr 2018 19:21:37 +0000 (19:21 +0000)]
DAG: Fix not legalizing vector fcanonicalizes

If an fcanoncialize was done on a vector type that was legal,

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330981 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU: Extend extract_vector_elt fneg combine to fabs
Matt Arsenault [Thu, 26 Apr 2018 19:21:32 +0000 (19:21 +0000)]
AMDGPU: Extend extract_vector_elt fneg combine to fabs

Fixes a regression in a future commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330980 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoAMDGPU: Consolidate SubtargetPredicate definitions
Matt Arsenault [Thu, 26 Apr 2018 19:21:26 +0000 (19:21 +0000)]
AMDGPU: Consolidate SubtargetPredicate definitions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330979 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoSpecify REQUIRES: default_triple in a few tests
Justin Bogner [Thu, 26 Apr 2018 19:15:25 +0000 (19:15 +0000)]
Specify REQUIRES: default_triple in a few tests

These were all failing when specifying LLVM_DEFAULT_TARGET_TRIPLE=''.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330977 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[AArch64] Fix scavenged spill slot base when stack realignment required.
Geoff Berry [Thu, 26 Apr 2018 18:50:45 +0000 (18:50 +0000)]
[AArch64] Fix scavenged spill slot base when stack realignment required.

Summary:
Use the FP for scavenged spill slot accesses to prevent corruption of
the callee-save region when the SP is re-aligned.

Based on problem and patch reported by @paulwalker-arm

This is an alternative to solution proposed in D45770

Reviewers: t.p.northover, paulwalker-arm, thegameg, javed.absar

Subscribers: qcolombet, mcrosier, paulwalker-arm, kristof.beyls, rengolin, javed.absar, llvm-commits

Differential Revision: https://reviews.llvm.org/D46063

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330976 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[NFC][InstCombine] rem.ll: add a few commutative tests.
Roman Lebedev [Thu, 26 Apr 2018 18:44:37 +0000 (18:44 +0000)]
[NFC][InstCombine] rem.ll: add a few commutative tests.

This closes a gap in missing test coverage in
isKnownToBeAPowerOfTwo() from ValueTracking.cpp

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330975 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[NFC][InstCombine] Regenerate rem.ll test
Roman Lebedev [Thu, 26 Apr 2018 18:44:32 +0000 (18:44 +0000)]
[NFC][InstCombine] Regenerate rem.ll test

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330974 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[llvm-objcopy] Implement --redefine-sym option
Alexander Shaposhnikov [Thu, 26 Apr 2018 18:28:17 +0000 (18:28 +0000)]
[llvm-objcopy] Implement --redefine-sym option

This diff implements --redefine-sym option
for changing the name of a symbol.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D46029

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330973 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoaugmenting description for fcmp fmf - NFC
Michael Berg [Thu, 26 Apr 2018 18:17:58 +0000 (18:17 +0000)]
augmenting description for fcmp fmf - NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330972 91177308-0d34-0410-b5e6-96231b3b80d8

6 years agoFix a bug that prevents global variables from having a DW_OP_deref.
Adrian Prantl [Thu, 26 Apr 2018 18:17:04 +0000 (18:17 +0000)]
Fix a bug that prevents global variables from having a DW_OP_deref.

For local variables the first DW_OP_deref is consumed by turning the
location kind into a memeory location, but that only makes sense for
values that are in a register to begin with, which cannot happen for
global variables that are attached to a symbol.

rdar://problem/39741860

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330970 91177308-0d34-0410-b5e6-96231b3b80d8

6 years ago[WebAssembly] Add version to object file metadata
Sam Clegg [Thu, 26 Apr 2018 18:15:32 +0000 (18:15 +0000)]
[WebAssembly] Add version to object file metadata

Summary: See https://github.com/WebAssembly/tool-conventions/issues/54

Subscribers: jfb, dschuff, jgravelle-google, aheejin, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D46069

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330969 91177308-0d34-0410-b5e6-96231b3b80d8