Will Newton [Wed, 26 Nov 2014 10:36:03 +0000 (10:36 +0000)]
Update ARM ELF relocations to ABI 2.09
Add R_ARM_IRELATIVE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222817
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Lang Hames [Wed, 26 Nov 2014 07:39:03 +0000 (07:39 +0000)]
[MCJIT] Re-enable GDB registration (temporarily disabled in r222811), but check
that we actually have an object to register first.
For MachO objects, RuntimeDyld::LoadedObjectInfo::getObjectForDebug returns an
empty OwningBinary<ObjectFile> which was causing crashes in the GDB registration
code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222812
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Lang Hames [Wed, 26 Nov 2014 07:25:26 +0000 (07:25 +0000)]
[MCJIT] Temporarily disable automatic JIT debugger registration.
The RuntimeDyld cleanup patch r222810 turned on GDB registration for MachO
objects. I expected this to be harmless, but it seems to have broken on
MacsOS. Temporarily disabling debugger registration while I dig in to what's
gone wrong.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222811
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Lang Hames [Wed, 26 Nov 2014 06:53:26 +0000 (06:53 +0000)]
[MCJIT] Clean up RuntimeDyld's quirky object-ownership/modification scheme.
Previously, when loading an object file, RuntimeDyld (1) took ownership of the
ObjectFile instance (and associated MemoryBuffer), (2) potentially modified the
object in-place, and (3) returned an ObjectImage that managed ownership of the
now-modified object and provided some convenience methods. This scheme accreted
over several years as features were tacked on to RuntimeDyld, and was both
unintuitive and unsafe (See e.g. http://llvm.org/PR20722).
This patch fixes the issue by removing all ownership and in-place modification
of object files from RuntimeDyld. Existing behavior, including debugger
registration, is preserved.
Noteworthy changes include:
(1) ObjectFile instances are now passed to RuntimeDyld by const-ref.
(2) The ObjectImage and ObjectBuffer classes have been removed entirely, they
existed to model ownership within RuntimeDyld, and so are no longer needed.
(3) RuntimeDyld::loadObject now returns an instance of a new class,
RuntimeDyld::LoadedObjectInfo, which can be used to construct a modified
object suitable for registration with the debugger, following the existing
debugger registration scheme.
(4) The JITRegistrar class has been removed, and the GDBRegistrar class has been
re-written as a JITEventListener.
This should fix http://llvm.org/PR20722 .
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222810
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Craig Topper [Wed, 26 Nov 2014 04:11:14 +0000 (04:11 +0000)]
Remove neverHasSideEffects support from TableGen CodeGenInstruction. Everyone should use hasSideEffects now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222809
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Richard Smith [Wed, 26 Nov 2014 03:44:47 +0000 (03:44 +0000)]
Try to make the modules buildbot happy again.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222808
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Eric Christopher [Wed, 26 Nov 2014 02:57:33 +0000 (02:57 +0000)]
Reformat with gofmt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222806
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Eric Christopher [Wed, 26 Nov 2014 02:54:24 +0000 (02:54 +0000)]
Make SetMCJITOptimizationLevel more of a method and pass options
as a reference. Move closer to the type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222805
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Eric Christopher [Wed, 26 Nov 2014 02:27:46 +0000 (02:27 +0000)]
Make sure that the go bindings call LLVMInitializeMCJITCompilerOptions
so that they initialize the code generation model to the correct
(non-zero) default model.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222804
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Craig Topper [Wed, 26 Nov 2014 00:46:26 +0000 (00:46 +0000)]
Replace neverHasSideEffects=1 with hasSideEffects=0 in all .td files.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222801
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Simon Pilgrim [Tue, 25 Nov 2014 22:34:59 +0000 (22:34 +0000)]
[X86][SSE] Improvements to byte shift shuffle matching
Since (v)pslldq / (v)psrldq instructions resolve to a single input argument it is useful to match it much earlier than we currently do - this prevents more complicated shuffles (notably insertion into a zero vector) matching before it.
Differential Revision: http://reviews.llvm.org/D6409
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222796
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Colin LeMahieu [Tue, 25 Nov 2014 22:15:44 +0000 (22:15 +0000)]
[Hexagon] Adding add64 and sub64 instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222795
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Colin LeMahieu [Tue, 25 Nov 2014 21:39:57 +0000 (21:39 +0000)]
Reverting 222792
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222793
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Colin LeMahieu [Tue, 25 Nov 2014 21:30:28 +0000 (21:30 +0000)]
[Hexagon] Adding compare with immediate instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222792
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Colin LeMahieu [Tue, 25 Nov 2014 21:23:07 +0000 (21:23 +0000)]
[Hexagon] Adding NOP encoding bits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222791
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Peter Collingbourne [Tue, 25 Nov 2014 21:05:04 +0000 (21:05 +0000)]
Go bindings: add DIBuilder.InsertValueAtEnd
Expose llvm::DIBuilder::insertDbgValueIntrinsic as
DIBuilder.InsertValueAtEnd in the Go bindings, to support attaching
debug metadata to register values.
Patch by Andrew Wilkins!
Differential Revision: http://reviews.llvm.org/D6374
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222790
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Matt Arsenault [Tue, 25 Nov 2014 21:03:22 +0000 (21:03 +0000)]
R600/SI: Only use one DEBUG()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222789
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Rafael Espindola [Tue, 25 Nov 2014 20:56:56 +0000 (20:56 +0000)]
This test requires asserts because of -stats.
Sorry about that.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222788
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Rafael Espindola [Tue, 25 Nov 2014 20:52:49 +0000 (20:52 +0000)]
gold plugin: call llvm_shutdown so that -stats works.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222787
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Cameron McInally [Tue, 25 Nov 2014 20:41:51 +0000 (20:41 +0000)]
[AVX512] Add 512b integer shift by variable intrinsics and patterns.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222786
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Colin LeMahieu [Tue, 25 Nov 2014 20:22:24 +0000 (20:22 +0000)]
[Hexagon] [NFC] Adding trailing whitespace to test files.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222785
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Colin LeMahieu [Tue, 25 Nov 2014 20:20:09 +0000 (20:20 +0000)]
[Hexagon] Adding C2_mux instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222784
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Craig Topper [Tue, 25 Nov 2014 20:11:34 +0000 (20:11 +0000)]
Remove unncessary check for Int_* and *_Int in AsmMatcherEmitter. These are all marked isCodeGenOnly these days.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222783
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Craig Topper [Tue, 25 Nov 2014 20:11:31 +0000 (20:11 +0000)]
Use range-based for loops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222782
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Craig Topper [Tue, 25 Nov 2014 20:11:29 +0000 (20:11 +0000)]
Remove dead code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222781
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Craig Topper [Tue, 25 Nov 2014 20:11:27 +0000 (20:11 +0000)]
Remove unused MaxSize variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222780
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Craig Topper [Tue, 25 Nov 2014 20:11:25 +0000 (20:11 +0000)]
Move a vector instead of copying it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222779
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Craig Topper [Tue, 25 Nov 2014 20:11:23 +0000 (20:11 +0000)]
Remove space before tab in all AVX512 mnemonic strings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222778
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Hans Wennborg [Tue, 25 Nov 2014 18:45:23 +0000 (18:45 +0000)]
Remove useless rdar:// comment from switch_to_lookup_table.ll test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222772
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Colin LeMahieu [Tue, 25 Nov 2014 18:20:52 +0000 (18:20 +0000)]
[Hexagon] Replacing cmp* instructions with ones that contain encoding bits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222771
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Colin LeMahieu [Tue, 25 Nov 2014 18:03:08 +0000 (18:03 +0000)]
Cleaning out google tests from MC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222770
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Hans Wennborg [Tue, 25 Nov 2014 17:23:05 +0000 (17:23 +0000)]
LazyValueInfo: Actually re-visit partially solved block-values in solveBlockValue()
If solveBlockValue() needs results from predecessors that are not already
computed, it returns false with the intention of resuming when the dependencies
have been resolved. However, the computation would never be resumed since an
'overdefined' result had been placed in the cache, preventing any further
computation.
The point of placing the 'overdefined' result in the cache seems to have been
to break cycles, but we can check for that when inserting work items in the
BlockValue stack instead. This makes the "stop and resume" mechanism of
solveBlockValue() work as intended, unlocking more analysis.
Using this patch shaves 120 KB off a 64-bit Chromium build on Linux.
I benchmarked compiling bzip2.c at -O2 but couldn't measure any difference in
compile time.
Tests by Jiangning Liu from r215343 / PR21238, Pete Cooper, and me.
Differential Revision: http://reviews.llvm.org/D6397
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222768
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Joerg Sonnenberger [Tue, 25 Nov 2014 17:14:22 +0000 (17:14 +0000)]
Small model and JIT generally don't go well with each other.
On LP64 platforms, it will work or not depending on the choosen memory
layout, so neither PASS nor XFAIL is appropiate.
As UNSUPPORTED as per-test target doesn't exist (yet), remove the test
instead to unbreak the builds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222767
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Rafael Espindola [Tue, 25 Nov 2014 15:33:40 +0000 (15:33 +0000)]
Set the body of a new struct as soon as it is created.
This changes the order in which different types are passed to get, but
one order is not inherently better than the other.
The main motivation is that this simplifies linkDefinedTypeBodies now that
it is only linking "real" opaque types. It is also means that we only have to
call it once and that we don't need getImpl.
A small change in behavior is that we don't copy type names when resolving
opaque types. This is an improvement IMHO, but it can be added back if
desired. A test is included with the new behavior.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222764
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Evgeniy Stepanov [Tue, 25 Nov 2014 15:24:07 +0000 (15:24 +0000)]
[msan] Annotate zlib functions for MemorySanitizer.
Mark destination buffer in zlib::compress and zlib::decompress as fully
initialized.
When building LLVM with system zlib and MemorySanitizer instrumentation,
MSan does not observe memory writes in zlib code and erroneously considers
zlib output buffers as uninitialized, resulting in false use-of-uninitialized
memory reports. This change helps MSan understand the state of that memory
and prevents such reports.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222763
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Rafael Espindola [Tue, 25 Nov 2014 14:35:53 +0000 (14:35 +0000)]
Misc style fixes. NFC.
This just reduces the noise in the next patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222761
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Joerg Sonnenberger [Tue, 25 Nov 2014 13:37:55 +0000 (13:37 +0000)]
Reapply 222538 and update tests to explicitly request small code model
and PIC:
Allow FDE references outside the +/-2GB range supported by PC relative
offsets for code models other than small/medium. For JIT application,
memory layout is less controlled and can result in truncations
otherwise.
Patch from Akos Kiss.
Differential Revision: http://reviews.llvm.org/D6079
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222760
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Joerg Sonnenberger [Tue, 25 Nov 2014 13:28:56 +0000 (13:28 +0000)]
Mark as explicit failing on x86-64 -- small memory model doesn't agree
with default address selections.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222759
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Rafael Espindola [Tue, 25 Nov 2014 13:19:46 +0000 (13:19 +0000)]
Remove a bit of duplicated code.
Exactly the same checks are present in areTypesIsomorphic.
This might have been a premature performance optimization. I cannot reproduce
any slowdown with this patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222758
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Chandler Carruth [Tue, 25 Nov 2014 10:50:41 +0000 (10:50 +0000)]
Revert r222746: That commit did not update any tests and caused two R600
tests to start failing.
Original commit log: R600/SI: Disable commutativity for MIN/MAX_LEGACY
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222753
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Zoran Jovanovic [Tue, 25 Nov 2014 10:50:00 +0000 (10:50 +0000)]
[mips][micromips] Use call instructions with short delay slots
Differential Revision: http://reviews.llvm.org/D6338
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222752
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Chandler Carruth [Tue, 25 Nov 2014 10:09:51 +0000 (10:09 +0000)]
[InstCombine] Change LLVM To canonicalize toward the value type being
stored rather than the pointer type.
This change is analogous to r220138 which changed the canonicalization
for loads. The rationale is the same: memory does not have a type,
operations (and thus the values they produce) have a type. We should
match that type as closely as possible rather than reading some form of
semantics into the pointer type.
With this change, loads and stores should no longer be made with
nonsensical types for the values that tehy load and store. This is
particularly important when trying to match specific loaded and stored
types in the process of doing other instcombines, which is what led me
down this twisty maze of miscanonicalization.
I've put quite some effort into looking through IR to find places where
LLVM's optimizer was being unreasonably conservative in the face of
mismatched load and store types, however it is possible (let's say,
likely!) I have missed some. If you see regressions here, or from
r220138, the likely cause is some part of LLVM failing to cope with load
and store types differing. Test cases appreciated, it is important that
we root all of these out of LLVM.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222748
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Marek Olsak [Tue, 25 Nov 2014 09:49:23 +0000 (09:49 +0000)]
R600/SI: Disable commutativity for MIN/MAX_LEGACY
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222746
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Charlie Turner [Tue, 25 Nov 2014 09:30:09 +0000 (09:30 +0000)]
Correctly handle Tag_CPU_arch_profile.
Fix ARMAttributeParser::CPU_arch_profile so that it doesn't switch on the value
'0' as a legal value of this build attribute.
Change-Id: Ie05a08900a82bb10b78c841b437df747ce3bb38e
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222743
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Suyog Sarda [Tue, 25 Nov 2014 08:44:56 +0000 (08:44 +0000)]
Change the test case file to use FileCheck instead of grep. NFC.
Change by Ankur Garg.
Differential Revision: http://reviews.llvm.org/D6382
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222740
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Chandler Carruth [Tue, 25 Nov 2014 08:20:27 +0000 (08:20 +0000)]
Revert r220349 to re-instate r220277 with a fix for PR21330 -- quite
clearly only exactly equal width ptrtoint and inttoptr casts are no-op
casts, it says so right there in the langref. Make the code agree.
Original log from r220277:
Teach the load analysis to allow finding available values which require
inttoptr or ptrtoint cast provided there is datalayout available.
Eventually, the datalayout can just be required but in practice it will
always be there today.
To go with the ability to expose available values requiring a ptrtoint
or inttoptr cast, helpers are added to perform one of these three casts.
These smarts are necessary to finish canonicalizing loads and stores to
the operational type requirements without regressing fundamental
combines.
I've added some test cases. These should actually improve as the load
combining and store combining improves, but they may fundamentally be
highlighting some missing combines for select in addition to exercising
the specific added logic to load analysis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222739
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Matt Arsenault [Tue, 25 Nov 2014 07:53:06 +0000 (07:53 +0000)]
R600/SI: Fix allocating flat_scr_lo / flat_scr_hi
Only the super register flat_scr was marked as reserved,
so in some cases with high register usage it would still
try to allocate the subregisters.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222737
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David Majnemer [Tue, 25 Nov 2014 07:45:56 +0000 (07:45 +0000)]
Forgot to add a file for r222734
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222736
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David Majnemer [Tue, 25 Nov 2014 07:43:14 +0000 (07:43 +0000)]
COFF: Add back an assertion that is superseded by r222124
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222735
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David Majnemer [Tue, 25 Nov 2014 07:42:36 +0000 (07:42 +0000)]
COFF: Add another test for r222124
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222734
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Rafael Espindola [Tue, 25 Nov 2014 06:16:27 +0000 (06:16 +0000)]
Use a range loop. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222730
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Rafael Espindola [Tue, 25 Nov 2014 06:11:24 +0000 (06:11 +0000)]
Style fix: don't indent inside a namemespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222729
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Rafael Espindola [Tue, 25 Nov 2014 06:07:51 +0000 (06:07 +0000)]
Remove a nested anonymous namespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222728
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Rafael Espindola [Tue, 25 Nov 2014 05:59:24 +0000 (05:59 +0000)]
Fix overly aggressive type merging.
If we find out that two types are *not* isomorphic, we learn nothing about
opaque sub types in both the source and destination.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222727
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Simon Atanasyan [Tue, 25 Nov 2014 05:57:55 +0000 (05:57 +0000)]
[Object][Mips] Return address of MIPS symbol with cleared microMIPS indicator bit
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222726
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Rafael Espindola [Tue, 25 Nov 2014 04:43:59 +0000 (04:43 +0000)]
Link the type of aliases.
They are not more or less "well typed" than GlobalVariables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222725
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Rafael Espindola [Tue, 25 Nov 2014 04:28:31 +0000 (04:28 +0000)]
Don't repeat name in comment or duplicate comment. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222724
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Rafael Espindola [Tue, 25 Nov 2014 04:26:19 +0000 (04:26 +0000)]
Use range loops. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222723
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Juergen Ributzka [Tue, 25 Nov 2014 04:16:15 +0000 (04:16 +0000)]
[FastISel][AArch64] Fix and extend the tbz/tbnz pattern matching.
The pattern matching failed to recognize all instances of "-1", because when
comparing against "-1" we didn't use an APInt of the same bitwidth.
This commit fixes this and also adds inverse versions of the conditon to catch
more cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222722
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Rafael Espindola [Tue, 25 Nov 2014 03:47:57 +0000 (03:47 +0000)]
Add an interesting test that we already get right. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222720
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David Majnemer [Tue, 25 Nov 2014 02:55:48 +0000 (02:55 +0000)]
InstSimplify: Handle some simple tautological comparisons
This handles cases where we are comparing a masked value against itself.
The analysis could be further improved by making it recursive but such
expense is not currently justified.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222716
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David Blaikie [Tue, 25 Nov 2014 02:26:22 +0000 (02:26 +0000)]
Revert "unique_ptrify LLVMContextImpl::CAZConstants"
Missed the complexities of how these elements are destroyed.
This reverts commit r222714.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222715
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David Blaikie [Tue, 25 Nov 2014 02:13:54 +0000 (02:13 +0000)]
unique_ptrify LLVMContextImpl::CAZConstants
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222714
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Hal Finkel [Tue, 25 Nov 2014 00:30:11 +0000 (00:30 +0000)]
[PowerPC] Add the 'attn' instruction
The attn instruction is not part of the Power ISA, but is documented in the A2
user manual, and is accepted by the GNU assembler for the A2 and the POWER4+.
Reported as part of PR21650.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222712
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Hal Finkel [Mon, 24 Nov 2014 23:45:21 +0000 (23:45 +0000)]
[PowerPC] Implement combineRepeatedFPDivisors
This does not matter on newer cores (where we can use reciprocal estimates in
fast-math mode anyway), but for older cores this allows us to generate better
fast-math code where we have multiple FDIVs with a common divisor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222710
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Philip Reames [Mon, 24 Nov 2014 23:44:28 +0000 (23:44 +0000)]
Factor check for the assume intrinsic out of checks in computeKnownBitsFromAssume
We were matching against the assume intrinsic in every check. Since we know that it must be an assume, this is just wasted work. Somewhat surprisingly, matching an intrinsic id is actually relatively expensive. It devolves to a string construction and comparison in Function::isIntrinsic.
I originally spotted this because it showed up in a performance profile of my compiler. I've since discovered a separate issue which seems to be the actual root cause, but this is minor perf goodness regardless.
I'm likely to follow up with another change to factor out the comparison matching. There's no need to match the compare instruction in every single one of the tests.
Differential Revision: http://reviews.llvm.org/D6312
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222709
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Philip Reames [Mon, 24 Nov 2014 23:24:24 +0000 (23:24 +0000)]
Incorporate review comments from r221742
This change implements the comment and style changes Sean requested during post commit review with r221742. Sorry for the delay.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222707
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Matt Arsenault [Mon, 24 Nov 2014 23:15:18 +0000 (23:15 +0000)]
Bug 21610: Canonicalize min/max fcmp selects to use ordered comparisons
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222705
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Matt Arsenault [Mon, 24 Nov 2014 23:03:17 +0000 (23:03 +0000)]
Convert test to FileCheck and use CHECK-LABEL
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222704
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Philip Reames [Mon, 24 Nov 2014 22:32:43 +0000 (22:32 +0000)]
Clarify wording in the LangRef around !invariant.load
Clarify the wording around !invariant.load to properly reflect the semantics of such loads with respect to control dependence and location lifetime. To the best of my knowledge, the revised wording respects the actual implementation and understanding of issues involved highlighted in the recent 'Optimization hints for "constant" loads' thread on LLVMDev.
In particular, I'm aiming for the following results:
- To clarify that an invariant.load can fault and must respect control dependence. In particular, it is not sound to unconditionally pull an invariant load out of a loop if that loop would potentially never execute.
- To clarify that the invariant nature of a given pointer does not preclude the modification of that location through a pointer which is unrelated to the load operand. In particular, initializing a location and then passing a pointer through an opaque intrinsic which produces a new unrelated pointer, should behave as expected provided that the intrinsic is memory dependent on the initializing store.
- To clarify that storing a value to an invariant location is defined. It can not, for example, be considered unreachable. The value stored can be assumed to be equal to the value of any previous (or following!) invariant load, but the store itself is defined.
I recommend that anyone interested in using !invariant.load, or optimizing for them, read over the discussion in the review thread. A number of motivating examples are discussed.
Differential Revision: http://reviews.llvm.org/D6346
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222700
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Rafael Espindola [Mon, 24 Nov 2014 21:18:14 +0000 (21:18 +0000)]
Add a disable-output option to the gold plugin.
This corresponds to the opt option and is handy for profiling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222687
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Rafael Espindola [Mon, 24 Nov 2014 20:53:26 +0000 (20:53 +0000)]
Remove the unused FindUsedTypes pass.
It was dead since r134829.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222684
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Rafael Espindola [Mon, 24 Nov 2014 20:44:36 +0000 (20:44 +0000)]
Add and use Type::subtypes. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222682
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Rafael Espindola [Mon, 24 Nov 2014 20:35:59 +0000 (20:35 +0000)]
Pass the .ll files to llvm-link directly. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222681
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Sergey Dmitrouk [Mon, 24 Nov 2014 19:40:07 +0000 (19:40 +0000)]
Correct path to regression tests in ExtendingLLVM
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222678
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Chad Rosier [Mon, 24 Nov 2014 18:57:58 +0000 (18:57 +0000)]
[AArch64] Fix clobber computation in A57LoadBalancing pass.
Extremely difficult to reproduce, so no test case included.
PR21637
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222677
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Colin LeMahieu [Mon, 24 Nov 2014 18:55:32 +0000 (18:55 +0000)]
Removing unused variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222676
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Kostya Serebryany [Mon, 24 Nov 2014 18:49:53 +0000 (18:49 +0000)]
[asan/coverage] change the way asan coverage instrumentation is done: instead of setting the guard to 1 in the generated code, pass the pointer to guard to __sanitizer_cov and set it there. No user-visible functionality change expected
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222675
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Ulrich Weigand [Mon, 24 Nov 2014 18:09:47 +0000 (18:09 +0000)]
[PowerPC] Fix PR 21652 - copy st_other bits on symbol assignment
When processing an assignment in the integrated assembler that sets
a symbol to the value of another symbol, we need to copy the st_other
bits that encode the local entry point offset.
Modeled after MipsTargetELFStreamer::emitAssignment handling of the
ELF::STO_MIPS_MICROMIPS flag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222672
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Paul Robinson [Mon, 24 Nov 2014 18:05:29 +0000 (18:05 +0000)]
More long path name support on Windows, this time in program execution.
Allows long paths for the executable and redirected stdin/stdout/stderr.
Addresses PR21563.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222671
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Colin LeMahieu [Mon, 24 Nov 2014 18:04:42 +0000 (18:04 +0000)]
[Hexagon] Adding asrh instruction, removing unused multiclasses.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222670
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Colin LeMahieu [Mon, 24 Nov 2014 17:44:19 +0000 (17:44 +0000)]
[Hexagon] Adding aslh instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222668
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Colin LeMahieu [Mon, 24 Nov 2014 17:11:34 +0000 (17:11 +0000)]
[Hexagon] Adding zxth instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222662
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Colin LeMahieu [Mon, 24 Nov 2014 16:50:40 +0000 (16:50 +0000)]
Adding const iterator to MCInst. reviews.llvm.org/D6359
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222661
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Colin LeMahieu [Mon, 24 Nov 2014 16:48:43 +0000 (16:48 +0000)]
[Hexagon] Adding zxtb instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222660
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David Majnemer [Mon, 24 Nov 2014 16:41:13 +0000 (16:41 +0000)]
InstCombine: Don't create an unused instruction
We would create an instruction but not inserting it.
Not inserting the unused instruction would lead us to verification
failure.
This fixes PR21653.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222659
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Jozef Kolek [Mon, 24 Nov 2014 16:14:10 +0000 (16:14 +0000)]
[mips][microMIPS] Fix JRADDIUSP instruction
Fix JRADDIUSP instruction, remove delay slot flag because this instruction
doesn't have delay slot.
Differential Revision: http://reviews.llvm.org/D6365
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222658
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Yaron Keren [Mon, 24 Nov 2014 14:51:41 +0000 (14:51 +0000)]
Added comment about llvm_execute_on_thread waiting for thread to complete.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222654
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Jozef Kolek [Mon, 24 Nov 2014 14:39:13 +0000 (14:39 +0000)]
[mips][microMIPS] Implement LBU16, LHU16, LW16, SB16, SH16 and SW16 instructions
Differential Revision: http://reviews.llvm.org/D5122
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222653
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Jozef Kolek [Mon, 24 Nov 2014 14:25:53 +0000 (14:25 +0000)]
[mips][microMIPS] Implement 16-bit instructions registers including ZERO instead of S0
Implement microMIPS 16-bit instructions register set: $0, $2-$7 and $17.
Differential Revision: http://reviews.llvm.org/D5780
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222652
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Simon Atanasyan [Mon, 24 Nov 2014 14:17:33 +0000 (14:17 +0000)]
[Mips] Update MIPS relocations list
No functional changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222651
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Craig Topper [Mon, 24 Nov 2014 14:09:52 +0000 (14:09 +0000)]
Replace a comment that says 'unreachable' with llvm_unreachable in TableGen AsmWriter output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222650
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Aaron Ballman [Mon, 24 Nov 2014 14:03:16 +0000 (14:03 +0000)]
Removing a variable that is initialized but never read. The original author has been alerted to the warning, in case this variable is meant to be used. Fixes -Werror builds in the meantime.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222649
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Jozef Kolek [Mon, 24 Nov 2014 13:29:59 +0000 (13:29 +0000)]
[mips][microMIPS] Implement disassembler support for 16-bit instructions
With the help of new method readInstruction16() two bytes are read and
decodeInstruction() is called with DecoderTableMicroMips16, if this fails
four bytes are read and decodeInstruction() is called with
DecoderTableMicroMips32.
Differential Revision: http://reviews.llvm.org/D6149
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222648
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Andrea Di Biagio [Mon, 24 Nov 2014 12:23:15 +0000 (12:23 +0000)]
[X86] Improved target specific combine on VSELECT dag nodes.
This patch teaches function 'transformVSELECTtoBlendVECTOR_SHUFFLE' how to
convert VSELECT dag nodes to shuffles on targets that do not have SSE4.1.
On pre-SSE4.1 targets, we can still perform blend operations using movss/movsd.
Also, removed a target specific combine that performed a premature lowering of
VSELECT nodes to target specific MOVSS/MOVSD nodes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222647
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David Majnemer [Mon, 24 Nov 2014 07:26:20 +0000 (07:26 +0000)]
InstCombine: Don't assume DataLayout is always available
We tried to get the result of DataLayout::getLargestLegalIntTypeSize but
we didn't have a DataLayout. This resulted in opt crashing.
This fixes PR21651.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222645
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Duncan P. N. Exon Smith [Mon, 24 Nov 2014 03:13:02 +0000 (03:13 +0000)]
Support: Add *cast_or_null<> for pointer wrappers
Fill in omission of `cast_or_null<>` and `dyn_cast_or_null<>` for types
that wrap pointers (e.g., smart pointers).
Type traits need to be slightly stricter than for `cast<>` and
`dyn_cast<>` to resolve ambiguities with simple types.
There didn't seem to be any unit tests for pointer wrappers, so I tested
`isa<>`, `cast<>`, and `dyn_cast<>` while I was in there.
This only supports pointer wrappers with a conversion to `bool` to check
for null. If in the future it's useful to support wrappers without such
a conversion, it should be a straightforward incremental step to use the
`simplify_type` machinery for the null check. In that case, the unit
tests should be updated to remove the `operator bool()` from the
`pointer_wrappers::PTy`.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222644
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Craig Topper [Mon, 24 Nov 2014 02:08:35 +0000 (02:08 +0000)]
Detect best type for some static index tables instead of just using uint32_t to reduce total data size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222643
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Elena Demikhovsky [Sun, 23 Nov 2014 15:21:53 +0000 (15:21 +0000)]
Converted back to Unix format (after my last commit 222632)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222636
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Michael Kuperstein [Sun, 23 Nov 2014 13:09:06 +0000 (13:09 +0000)]
[X86] Fixes bug in build_vector v4x32 lowering
r222375 made some improvements to build_vector lowering of v4x32 and v4xf32 into an insertps, but it missed a case where:
1. A single extracted element is used twice.
2. The lower of the two non-zero indexes should be preserved, and the higher should be used for the dest mask.
This caused a crash, since the source value for the insertps ends-up uninitialized.
Differential Revision: http://reviews.llvm.org/D6377
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222635
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