Hal Finkel [Wed, 10 Sep 2014 21:05:52 +0000 (21:05 +0000)]
[AlignmentFromAssumptions] Don't divide by zero for unknown starting alignment
The routine that determines an alignment given some SCEV returns zero if the
answer is unknown. In a case where we could determine the increment of an
AddRec but not the starting alignment, we would compute the integer modulus by
zero (which is illegal and traps). Prevent this by returning early if either
the start or increment alignment is unknown (zero).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217544
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Dan Liew [Wed, 10 Sep 2014 20:43:03 +0000 (20:43 +0000)]
[sphinx cleanup]
Fix sphinx warning introduced by r217537
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217541
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Gerolf Hoflehner [Wed, 10 Sep 2014 20:31:57 +0000 (20:31 +0000)]
[AArch64] Revert r216141 for cyclone
The increase of the interleave factor to 4 has side-effects
like performance losses eg. due to reminder loops being executed
more frequently and may increase code size. It requires more
analysis and careful heuristic tuning. Expect double digit gains
in small benchmarks like lowercase.c and losses in puzzle.c.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217540
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Gerolf Hoflehner [Wed, 10 Sep 2014 20:24:03 +0000 (20:24 +0000)]
[PassManager] Adding Hidden attribute to EnableMLSM option
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217539
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Gerolf Hoflehner [Wed, 10 Sep 2014 19:55:29 +0000 (19:55 +0000)]
[MergedLoadStoreMotion] Move pass enabling option to PassManagerBuilder
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217538
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Nico Weber [Wed, 10 Sep 2014 19:50:55 +0000 (19:50 +0000)]
Fix docs reference to inexistent class.
Patch sent via telegraph by TNorthover. Thanks!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217537
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Rafael Espindola [Wed, 10 Sep 2014 19:39:41 +0000 (19:39 +0000)]
Remember to eraseFromParent after replaceAllUsesWith.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217536
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Adrian Prantl [Wed, 10 Sep 2014 18:52:29 +0000 (18:52 +0000)]
Cleanup: Use the appropriate API for accessing the DIVariable of a
DBG_VALUE intrinsic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217533
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Arnaud A. de Grandmaison [Wed, 10 Sep 2014 18:40:18 +0000 (18:40 +0000)]
[AArch64] Temporarily desactivate the PBQP test, while I investigate some leaks in the allocator
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217531
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Alexey Samsonov [Wed, 10 Sep 2014 18:00:17 +0000 (18:00 +0000)]
Make CallingConv::ID an alias of "unsigned".
Summary:
Make CallingConv::ID a plain unsigned instead of enum with a
fixed set of valus. LLVM IR allows arbitraty calling conventions (you are
free to write
cc12345), and loading them as enum is an undefined
behavior. This was reported by UBSan.
Test Plan: llvm regression test suite
Reviewers: nicholas
Reviewed By: nicholas
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D5248
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217529
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Sanjay Patel [Wed, 10 Sep 2014 17:58:16 +0000 (17:58 +0000)]
Rename getMaximumUnrollFactor -> getMaxInterleaveFactor; also rename option names controlling this variable.
"Unroll" is not the appropriate name for this variable. Clang already uses
the term "interleave" in pragmas and metadata for this.
Differential Revision: http://reviews.llvm.org/D5066
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217528
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Gerolf Hoflehner [Wed, 10 Sep 2014 17:54:50 +0000 (17:54 +0000)]
Removed misleading comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217527
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Gerolf Hoflehner [Wed, 10 Sep 2014 17:52:27 +0000 (17:52 +0000)]
Added missing blank
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217526
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Hans Wennborg [Wed, 10 Sep 2014 17:05:08 +0000 (17:05 +0000)]
LangRef: @baz should be @bar in the COMDAT example
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217520
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Arnaud A. de Grandmaison [Wed, 10 Sep 2014 17:03:25 +0000 (17:03 +0000)]
[AArch64] Address Chad's post commit review comments for r217504 (PBQP experimental support)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217518
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Sanjay Patel [Wed, 10 Sep 2014 16:58:40 +0000 (16:58 +0000)]
typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217516
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Frederic Riss [Wed, 10 Sep 2014 16:03:14 +0000 (16:03 +0000)]
Fix comments of createReplaceableForwardDecl() and createForwardDecl().
Noticed while trying to understand how the merge of forward decalred types
and defintions work.
Reviewers: echristo, dblaikie, aprantl
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D5291
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217514
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Rafael Espindola [Wed, 10 Sep 2014 15:50:08 +0000 (15:50 +0000)]
Replace a few virtual with override.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217513
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Arnaud A. de Grandmaison [Wed, 10 Sep 2014 14:24:02 +0000 (14:24 +0000)]
[AArch64] Pacify lld buildbot complaining about an unused static function in release build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217505
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Arnaud A. de Grandmaison [Wed, 10 Sep 2014 14:06:10 +0000 (14:06 +0000)]
[AArch64] Add experimental PBQP support
This adds target specific support for using the PBQP register allocator on the
AArch64, for the A57 cpu.
By default, the PBQP allocator is not used, unless explicitely required
on the command line with "-aarch64-pbqp".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217504
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Asiri Rathnayake [Wed, 10 Sep 2014 13:54:38 +0000 (13:54 +0000)]
[AArch 64] Use a constant pool load for weak symbol references when
using static relocation model and small code model.
Summary: currently we generate GOT based relocations for weak symbol
references regardless of the underlying relocation model. This should
be change so that in static relocation model we use a constant pool
load instead.
Patch from: Keith Walker
Reviewers: Renato Golin, Tim Northover
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217503
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Sid Manning [Wed, 10 Sep 2014 13:09:25 +0000 (13:09 +0000)]
Add missing HWEncoding to base register class.
This change gives tblgen the information needed to fill in the
HexagonRegEncodingTable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217500
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David Majnemer [Wed, 10 Sep 2014 13:01:03 +0000 (13:01 +0000)]
Attempt to pacify buildbots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217499
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Tim Northover [Wed, 10 Sep 2014 12:53:28 +0000 (12:53 +0000)]
ARM: don't size-reduce STMs using the LR register.
The only Thumb-1 multi-store capable of using LR is the PUSH instruction, which
translates to STMDB, so we shouldn't convert STMIAs.
Patch by Sergey Dmitrouk.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217498
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David Majnemer [Wed, 10 Sep 2014 12:51:52 +0000 (12:51 +0000)]
Object: Add support for bigobj
This adds support for reading the "bigobj" variant of COFF produced by
cl's /bigobj and mingw's -mbig-obj.
The most significant difference that bigobj brings is more than 2**16
sections to COFF.
bigobj brings a few interesting differences with it:
- It doesn't have a Characteristics field in the file header.
- It doesn't have a SizeOfOptionalHeader field in the file header (it's
only used in executable files).
- Auxiliary symbol records have the same width as a symbol table entry.
Since symbol table entries are bigger, so are auxiliary symbol
records.
Write support will come soon.
Differential Revision: http://reviews.llvm.org/D5259
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217496
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Daniel Sanders [Wed, 10 Sep 2014 12:02:27 +0000 (12:02 +0000)]
[mips] Remove inverted predicates from MipsSubtarget that were only used by MipsCallingConv.td
Summary: No functional change
Reviewers: echristo, vmedic
Reviewed By: echristo, vmedic
Subscribers: echristo, llvm-commits
Differential Revision: http://reviews.llvm.org/D5266
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217494
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Dan Liew [Wed, 10 Sep 2014 11:09:23 +0000 (11:09 +0000)]
Don't attempt to run llvm-config in cmake/modules/Makefile when doing
``make clean`` because it won't be available.
This is an attempt to unbreak buildbots broken by r217484.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217490
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Yaron Keren [Wed, 10 Sep 2014 10:48:06 +0000 (10:48 +0000)]
FunctionPassManager isn't used by the JIT anymore, it is used in
clang EmitAssemblyHelper::CreatePasses() in BackendUtil.cpp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217488
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Daniel Sanders [Wed, 10 Sep 2014 10:37:03 +0000 (10:37 +0000)]
[mips] Return an ArrayRef from MipsCC::intArgRegs() and remove MipsCC::numIntArgRegs()
Summary: No functional change.
Reviewers: vmedic
Reviewed By: vmedic
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D5265
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217485
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Dan Liew [Wed, 10 Sep 2014 10:18:59 +0000 (10:18 +0000)]
Attempt to fix PR20884
This fixes the generation of broken LLVMExports.cmake file by
the Autoconf/Makefile build system when --enable-shared is passed to
configure.
When --enable_shared is passed the Makefile.rules does not set the
LLVMConfigLibs variable which cmake/modules/Makefile previously relied
on. Now it runs the llvm-config command itself to get the library names.
This still isn't perfect because the generated LLVM targets refer to the
static libraries and not the shared library but that is much larger
problem to fix.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217484
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Stepan Dyatkovskiy [Wed, 10 Sep 2014 10:08:25 +0000 (10:08 +0000)]
MergeFunctions: FunctionPtr has been renamed to FunctionNode.
It's supposed to store additional pass information for current function here.
That was the reason for name change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217483
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Yuri Gorshenin [Wed, 10 Sep 2014 09:45:49 +0000 (09:45 +0000)]
[asan-assembly-instrumentation] Added CFI directives to the generated instrumentation code.
Summary: [asan-assembly-instrumentation] Added CFI directives to the generated instrumentation code.
Reviewers: eugenis
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D5189
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217482
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Job Noorman [Wed, 10 Sep 2014 06:58:14 +0000 (06:58 +0000)]
Drop the W postfix on the 16-bit registers.
This ensures the inline assembly register constraints are properly recognised in
TargetLowering::getRegForInlineAsmConstraint.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217479
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Justin Bogner [Wed, 10 Sep 2014 06:35:38 +0000 (06:35 +0000)]
llvm-cov: Remove an overly system specific test
It appears that the -filename-equivalence option for testing llvm-cov
doesn't work correctly with -show-expansions. I'm reverting this test
to get the bots green while I look into fixing that.
This partially reverts r217476
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217478
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Kai Nacke [Wed, 10 Sep 2014 06:10:24 +0000 (06:10 +0000)]
[MIPS] Add aliases for sync instruction used by Octeon CPU
This commit adds aliases for the sync instruction (synciobdma,
syncs, syncw, syncws) which are used by the Octeon CPU.
Reviewed by D. Sanders
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217477
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Justin Bogner [Wed, 10 Sep 2014 06:06:07 +0000 (06:06 +0000)]
llvm-cov: Fix a misuse of ArrayRef::slice I introduced in r217430
It appears this code was completely untested, so using ArrayRef wrong
didn't break anything obvious.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217476
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Craig Topper [Wed, 10 Sep 2014 04:51:36 +0000 (04:51 +0000)]
Use cast to MVT instead of EVT on a couple calls to getSizeInBits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217473
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Lang Hames [Wed, 10 Sep 2014 00:13:42 +0000 (00:13 +0000)]
[MCJIT] Remove redundant architecture check from RuntimeDyldMachOI386.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217470
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David Blaikie [Tue, 9 Sep 2014 23:13:01 +0000 (23:13 +0000)]
Sink PrevCU updating into DwarfUnit::addRange to ensure consistency
So that the two operations in DwarfDebug couldn't get separated (because
I accidentally separated them in some work in progress), put them
together. While we're here, move DwarfUnit::addRange to
DwarfCompileUnit, since it's not relevant to type units.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217468
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David Blaikie [Tue, 9 Sep 2014 22:56:36 +0000 (22:56 +0000)]
Remove DwarfDebug::PrevSection, PrevCU is sufficient for handling address range holes.
PrevSection/PrevCU are used to detect holes in the address range of a CU
to ensure the DW_AT_ranges does not include those holes. When we see a
function with no debug info, though it may be in the same range as the
prior and subsequent functions, there should be a gap in the CU's
ranges. By setting PrevCU to null in that case, the range would not be
extended to cover the gap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217466
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NAKAMURA Takumi [Tue, 9 Sep 2014 22:44:30 +0000 (22:44 +0000)]
SampleProfile.cpp: Prune a stray \param added in r217437. [-Wdocumentation]
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217465
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Rafael Espindola [Tue, 9 Sep 2014 20:08:22 +0000 (20:08 +0000)]
Handle common linkage correctly in the gold plugin.
This is the plugin version of pr20882.
This handles the case of every common symbol being in the IR. We will need some
support from gold to handle the case where some symbols are in ELF and some in
the IR.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217458
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Sanjay Patel [Tue, 9 Sep 2014 20:07:07 +0000 (20:07 +0000)]
Add a scheduling model for AMD 16H Jaguar (btver2).
This is a first pass at a scheduling model for Jaguar.
It's structured largely on the existing SandyBridge and SLM sched models.
Using this model, in addition to turning on the PostRA scheduler, results in
some perf wins on internal and 3rd party benchmarks. There's not much difference
in LLVM's test-suite benchmarking subset of tests.
Differential Revision: http://reviews.llvm.org/D5229
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217457
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Rafael Espindola [Tue, 9 Sep 2014 17:48:18 +0000 (17:48 +0000)]
Merge alignment of common GlobalValue.
Fixes pr20882.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217455
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Ed Maste [Tue, 9 Sep 2014 17:47:24 +0000 (17:47 +0000)]
Use armv6k default for FreeBSD/ARM
Patch by Andrew Turner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217454
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Bjorn Steinbrink [Tue, 9 Sep 2014 17:10:21 +0000 (17:10 +0000)]
Add a test for hoisting instructions with metadata out of then/else blocks
Test for the bug fixed in r215723.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217453
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Rafael Espindola [Tue, 9 Sep 2014 15:59:12 +0000 (15:59 +0000)]
When merging two common GlobalValues, keep the largest.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217451
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Rafael Espindola [Tue, 9 Sep 2014 15:40:12 +0000 (15:40 +0000)]
Make this input file pass the verifier.
This was not noticed before because llvm-link only runs the verifier on the
result and these globals were not present in the result.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217450
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Rafael Espindola [Tue, 9 Sep 2014 15:21:00 +0000 (15:21 +0000)]
Move some logic to ModuleLinker::shouldLinkFromSource. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217449
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NAKAMURA Takumi [Tue, 9 Sep 2014 15:00:38 +0000 (15:00 +0000)]
ScalarOpts/LLVMBuild.txt: Prune unused dependency to IPA.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217448
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NAKAMURA Takumi [Tue, 9 Sep 2014 15:00:26 +0000 (15:00 +0000)]
ScalarOpts/LLVMBuild.txt: Reorder.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217447
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NAKAMURA Takumi [Tue, 9 Sep 2014 15:00:13 +0000 (15:00 +0000)]
LLVMProfileData: Update LLVMBuild.txt corresponding to r217437.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217446
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Rafael Espindola [Tue, 9 Sep 2014 14:52:27 +0000 (14:52 +0000)]
Fix a use of an undefined value (the linkage).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217445
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Rafael Espindola [Tue, 9 Sep 2014 14:27:09 +0000 (14:27 +0000)]
Prefer common over weak linkage when linking.
This matches the behavior of ELF linkers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217443
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Rafael Espindola [Tue, 9 Sep 2014 14:07:40 +0000 (14:07 +0000)]
Simplify ModuleLinker::getLinkageResult. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217441
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Toma Tabacu [Tue, 9 Sep 2014 12:52:14 +0000 (12:52 +0000)]
[mips] Add assembler support for .set mips0 directive.
Summary:
This directive is used to reset the assembler options to their initial values.
Assembly programmers use it in conjunction with the ".set mipsX" directives.
This patch depends on the .set push/pop directive (http://reviews.llvm.org/D4821).
Contains work done by Matheus Almeida.
Reviewers: dsanders
Reviewed By: dsanders
Differential Revision: http://reviews.llvm.org/D4957
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217438
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Diego Novillo [Tue, 9 Sep 2014 12:40:50 +0000 (12:40 +0000)]
Re-factor sample profile reader into lib/ProfileData.
Summary:
This patch moves the profile reading logic out of the Sample Profile
transformation into a generic profile reader facility in
lib/ProfileData.
The intent is to use this new reader to implement a sample profile
reader/writer that can be used to convert sample profiles from external
sources into LLVM.
This first patch introduces no functional changes. It moves the profile
reading code from lib/Transforms/SampleProfile.cpp into
lib/ProfileData/SampleProfReader.cpp.
In subsequent patches I will:
- Add a bitcode format for sample profiles to allow for more efficient
encoding of the profile.
- Add a writer for both text and bitcode format profiles.
- Add a 'convert' command to llvm-profdata to be able to convert between
the two (and serve as entry point for other sample profile formats).
Reviewers: bogner, echristo
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D5250
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217437
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Daniel Sanders [Tue, 9 Sep 2014 12:11:16 +0000 (12:11 +0000)]
[mips] Move MipsTargetLowering::MipsCC::regSize() to MipsSubtarget::getGPRSizeInBytes()
Summary:
The GPR size is more a property of the subtarget than that of the ABI so move
this information to the MipsSubtarget.
No functional change.
Reviewers: vmedic
Reviewed By: vmedic
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D5009
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217436
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Pavel Chupin [Tue, 9 Sep 2014 11:54:12 +0000 (11:54 +0000)]
[x32] Emit callq for CALLpcrel32
Summary:
In AT&T annotation for both x86_64 and x32 calls should be printed as
callq in assembly. It's only a matter of correct mnemonic, object output
is ok.
Test Plan: trivial test added
Reviewers: nadav, dschuff, craig.topper
Subscribers: llvm-commits, zinovy.nis
Differential Revision: http://reviews.llvm.org/D5213
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217435
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Daniel Sanders [Tue, 9 Sep 2014 10:46:48 +0000 (10:46 +0000)]
[mips] Don't cache IsO32 and IsFP64 in MipsTargetLowering::MipsCC
Summary:
Use a MipsSubtarget reference instead.
No functional change.
Reviewers: vmedic
Reviewed By: vmedic
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D5008
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217434
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Tim Northover [Tue, 9 Sep 2014 10:45:06 +0000 (10:45 +0000)]
llvm-objdump: don't crash when __compact_unwind has no relocs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217433
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Toma Tabacu [Tue, 9 Sep 2014 10:15:38 +0000 (10:15 +0000)]
[mips] Add assembler support for .set push/pop directive.
Summary:
These directives are used to save the current assembler options (in the case of ".set push") and restore the previously saved options (in the case of ".set pop").
Contains work done by Matheus Almeida.
Reviewers: dsanders
Reviewed By: dsanders
Differential Revision: http://reviews.llvm.org/D4821
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217432
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Renato Golin [Tue, 9 Sep 2014 09:57:59 +0000 (09:57 +0000)]
ARM: Negative offset support problem
This patch is to permit a negative offset usage for a non frame access.
Patch by Igor Oblakov.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217431
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Justin Bogner [Tue, 9 Sep 2014 09:15:52 +0000 (09:15 +0000)]
llvm-cov: Use ArrayRef::slice (NFC)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217430
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Patrik Hagglund [Tue, 9 Sep 2014 07:47:00 +0000 (07:47 +0000)]
[MachineSinking] Conservatively clear kill flags after coalescing.
This solves the problem of having a kill flag inside a loop
with a definition of the register prior to the loop:
%vreg368<def> ...
Inside loop:
%vreg520<def> = COPY %vreg368
%vreg568<def,tied1> = add %vreg341<tied0>, %vreg520<kill>
=> was coalesced into =>
%vreg568<def,tied1> = add %vreg341<tied0>, %vreg368<kill>
MachineVerifier then complained:
*** Bad machine code: Virtual register killed in block, but needed live out. ***
The kill flag for %vreg368 is incorrect, and is cleared by this patch.
This is similar to the clearing done at the end of
MachineSinking::SinkInstruction().
Patch provided by Jonas Paulsson.
Reviewed by Quentin Colombet and Juergen Ributzka.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217427
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Justin Bogner [Tue, 9 Sep 2014 05:32:18 +0000 (05:32 +0000)]
llvm-cov: Combine two types that were nearly identical (NFC)
llvm-cov had a SourceRange type that was nearly identical to a
CountedRegion except that it shaved off a couple of fields. There
aren't likely to be enough of these for the minor memory savings to be
worth the extra complexity here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217417
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Justin Bogner [Tue, 9 Sep 2014 05:32:14 +0000 (05:32 +0000)]
llvm-cov: Rename MappingRegion to coverage::CountedRegion (NFC)
This name was too similar to CoverageMappingRegion, and the type
really belongs in the coverage library anyway.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217416
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Bob Wilson [Tue, 9 Sep 2014 01:13:36 +0000 (01:13 +0000)]
Set trunc store action to Expand for all X86 targets.
When compiling without SSE2, isTruncStoreLegal(F64, F32) would return Legal, whereas with SSE2 it would return Expand. And since the Target doesn't seem to actually handle a truncstore for double -> float, it would just output a store of a full double in the space for a float hence overwriting other bits on the stack.
Patch by Luqman Aden!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217410
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Justin Bogner [Mon, 8 Sep 2014 21:31:43 +0000 (21:31 +0000)]
llvm-cov: Try to appease MSVC after r217404
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217406
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Dan Liew [Mon, 8 Sep 2014 21:19:46 +0000 (21:19 +0000)]
Fix type error in insertvalue example in LangRef. %agg1 is of type {i32,
float} and thus cannot be used where a type {i32, {float}} is expected.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217405
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Justin Bogner [Mon, 8 Sep 2014 21:04:00 +0000 (21:04 +0000)]
llvm-cov: Use ErrorOr rather than an error_code* (NFC)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217404
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Hans Wennborg [Mon, 8 Sep 2014 20:24:10 +0000 (20:24 +0000)]
Fast-ISel: Remove dead code after falling back from selecting call instructions (PR20863)
Previously, fast-isel would not clean up after failing to select a call
instruction, because it would have called flushLocalValueMap() which moves
the insertion point, making SavedInsertPt in selectInstruction() invalid.
Fixing this by making SavedInsertPt a member variable, and having
flushLocalValueMap() update it.
This removes some redundant code at -O0, and more importantly fixes PR20863.
Differential Revision: http://reviews.llvm.org/D5249
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217401
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Sanjay Patel [Mon, 8 Sep 2014 20:16:42 +0000 (20:16 +0000)]
Group unsafe fmul math folds together for easier reading. No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217399
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Justin Bogner [Mon, 8 Sep 2014 19:51:21 +0000 (19:51 +0000)]
llvm-cov: Remove dead code
FunctionCoverageMapping::PrettyName was from a version of the tool
during review, and isn't actually used currently.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217398
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Hal Finkel [Mon, 8 Sep 2014 19:31:25 +0000 (19:31 +0000)]
Don't static_cast invalid pointers
UBSan complained about using static_cast on the invalid (tombstone, etc.)
pointers used by DenseMap. Use a reinterpret_cast instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217397
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Alexey Samsonov [Mon, 8 Sep 2014 19:16:28 +0000 (19:16 +0000)]
Be more careful in parsing Module::ModFlagBehavior value
to make sure we don't do invalid load of an enum. Share the
conversion code between llvm::Module implementation and the
verifier.
This bug was reported by UBSan.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217395
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Sanjay Patel [Mon, 8 Sep 2014 18:22:51 +0000 (18:22 +0000)]
Fix the FIXME that was just added in r217390 - remove a bunch of redundant fold permutations.
The testcases for these folds already exist in test/CodeGen/X86/fp-fast.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217393
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Sanjay Patel [Mon, 8 Sep 2014 17:32:19 +0000 (17:32 +0000)]
group unsafe math folds together for easier reading
Also added a FIXME regarding redundant folds for non-canonicalized constants.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217390
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Chad Rosier [Mon, 8 Sep 2014 15:34:16 +0000 (15:34 +0000)]
[AArch64] Enabled AA support for Cortex-A57.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217381
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Matt Arsenault [Mon, 8 Sep 2014 15:07:33 +0000 (15:07 +0000)]
R600/SI: Fix assertion from copying a TargetGlobalAddress
Assert in scheduler from an inserted copy_to_regclass from
a constant.
This only seems to break sometimes when a constant initializer
address is forced into VGPRs in a non-entry block. No test
since the only case I've managed to hit only happens with a future
patch, and that case will also not be a problem once scalar instructions
are used in non-entry blocks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217380
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Matt Arsenault [Mon, 8 Sep 2014 15:07:31 +0000 (15:07 +0000)]
R600/SI: Replace LDS atomics with no return versions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217379
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Matt Arsenault [Mon, 8 Sep 2014 15:07:27 +0000 (15:07 +0000)]
R600/SI: Add InstrMapping for noret atomics.
Only handles LDS atomics for now, and will be used
to replace atomics with no uses with the no return
versions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217378
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Chad Rosier [Mon, 8 Sep 2014 14:43:48 +0000 (14:43 +0000)]
[AArch64] Improve AA to remove unneeded edges in the AA MI scheduling graph.
Patch by Sanjin Sijaric <ssijaric@codeaurora.org>!
Phabricator Review: http://reviews.llvm.org/D5103
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217371
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Chad Rosier [Mon, 8 Sep 2014 14:31:49 +0000 (14:31 +0000)]
[AArch64] Enabled AA support for Cortex-A53.
Patch by Sanjin Sijaric <ssijaric@codeaurora.org>!
Phabricator Review: http://reviews.llvm.org/D5103
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217370
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Alexander Kornienko [Mon, 8 Sep 2014 13:30:00 +0000 (13:30 +0000)]
Add .clang-tidy configuration file to provide LLVM-optimized defaults for
clang-tidy.
Reviewers: chandlerc, djasper
Reviewed By: djasper
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D5236
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217365
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Sid Manning [Mon, 8 Sep 2014 13:05:23 +0000 (13:05 +0000)]
Spelling correction
Another trivial spelling change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217364
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Andrew Trick [Sun, 7 Sep 2014 23:16:24 +0000 (23:16 +0000)]
Add a comment to getNewAlignmentDiff.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217350
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Hal Finkel [Sun, 7 Sep 2014 21:37:59 +0000 (21:37 +0000)]
Make use @llvm.assume for loop guards in ScalarEvolution
This adds a basic (but important) use of @llvm.assume calls in ScalarEvolution.
When SE is attempting to validate a condition guarding a loop (such as whether
or not the loop count can be zero), this check should also include dominating
assumptions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217348
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Hal Finkel [Sun, 7 Sep 2014 21:28:34 +0000 (21:28 +0000)]
Check for all known bits on ret in InstCombine
From a combination of @llvm.assume calls (and perhaps through other means, such
as range metadata), it is possible that all bits of a return value might be
known. Previously, InstCombine did not check for this (which is understandable
given assumptions of constant propagation), but means that we'd miss simple
cases where assumptions are involved.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217346
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Hal Finkel [Sun, 7 Sep 2014 20:29:59 +0000 (20:29 +0000)]
Make use of @llvm.assume from LazyValueInfo
This change teaches LazyValueInfo to use the @llvm.assume intrinsic. Like with
the known-bits change (r217342), this requires feeding a "context" instruction
pointer through many functions. Aside from a little refactoring to reuse the
logic that turns predicates into constant ranges in LVI, the only new code is
that which can 'merge' the range from an assumption into that otherwise
computed. There is also a small addition to JumpThreading so that it can have
LVI use assumptions in the same block as the comparison feeding a conditional
branch.
With this patch, we can now simplify this as expected:
int foo(int a) {
__builtin_assume(a > 5);
if (a > 3) {
bar();
return 1;
}
return 0;
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217345
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Hal Finkel [Sun, 7 Sep 2014 20:05:11 +0000 (20:05 +0000)]
Add an AlignmentFromAssumptions Pass
This adds a ScalarEvolution-powered transformation that updates load, store and
memory intrinsic pointer alignments based on invariant((a+q) & b == 0)
expressions. Many of the simple cases we can get with ValueTracking, but we
still need something like this for the more complicated cases (such as those
with an offset) that require some algebra. Note that gcc's
__builtin_assume_aligned's optional third argument provides exactly for this
kind of 'misalignment' offset for which this kind of logic is necessary.
The primary motivation is to fixup alignments for vector loads/stores after
vectorization (and unrolling). This pass is added to the optimization pipeline
just after the SLP vectorizer runs (which, admittedly, does not preserve SE,
although I imagine it could). Regardless, I actually don't think that the
preservation matters too much in this case: SE computes lazily, and this pass
won't issue any SE queries unless there are any assume intrinsics, so there
should be no real additional cost in the common case (SLP does preserve DT and
LoopInfo).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217344
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Hal Finkel [Sun, 7 Sep 2014 19:21:07 +0000 (19:21 +0000)]
Add additional patterns for @llvm.assume in ValueTracking
This builds on r217342, which added the infrastructure to compute known bits
using assumptions (@llvm.assume calls). That original commit added only a few
patterns (to catch common cases related to determining pointer alignment); this
change adds several other patterns for simple cases.
r217342 contained that, for assume(v & b = a), bits in the mask
that are known to be one, we can propagate known bits from the a to v. It also
had a known-bits transfer for assume(a = b). This patch adds:
assume(~(v & b) = a) : For those bits in the mask that are known to be one, we
can propagate inverted known bits from the a to v.
assume(v | b = a) : For those bits in b that are known to be zero, we can
propagate known bits from the a to v.
assume(~(v | b) = a): For those bits in b that are known to be zero, we can
propagate inverted known bits from the a to v.
assume(v ^ b = a) : For those bits in b that are known to be zero, we can
propagate known bits from the a to v. For those bits in
b that are known to be one, we can propagate inverted
known bits from the a to v.
assume(~(v ^ b) = a) : For those bits in b that are known to be zero, we can
propagate inverted known bits from the a to v. For those
bits in b that are known to be one, we can propagate
known bits from the a to v.
assume(v << c = a) : For those bits in a that are known, we can propagate them
to known bits in v shifted to the right by c.
assume(~(v << c) = a) : For those bits in a that are known, we can propagate
them inverted to known bits in v shifted to the right by c.
assume(v >> c = a) : For those bits in a that are known, we can propagate them
to known bits in v shifted to the right by c.
assume(~(v >> c) = a) : For those bits in a that are known, we can propagate
them inverted to known bits in v shifted to the right by c.
assume(v >=_s c) where c is non-negative: The sign bit of v is zero
assume(v >_s c) where c is at least -1: The sign bit of v is zero
assume(v <=_s c) where c is negative: The sign bit of v is one
assume(v <_s c) where c is non-positive: The sign bit of v is one
assume(v <=_u c): Transfer the known high zero bits
assume(v <_u c): Transfer the known high zero bits (if c is know to be a power
of 2, transfer one more)
A small addition to InstCombine was necessary for some of the test cases. The
problem is that when InstCombine was simplifying and, or, etc. it would fail to
check the 'do I know all of the bits' condition before checking less specific
conditions and would not fully constant-fold the result. I'm not sure how to
trigger this aside from using assumptions, so I've just included the change
here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217343
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Hal Finkel [Sun, 7 Sep 2014 18:57:58 +0000 (18:57 +0000)]
Make use of @llvm.assume in ValueTracking (computeKnownBits, etc.)
This change, which allows @llvm.assume to be used from within computeKnownBits
(and other associated functions in ValueTracking), adds some (optional)
parameters to computeKnownBits and friends. These functions now (optionally)
take a "context" instruction pointer, an AssumptionTracker pointer, and also a
DomTree pointer, and most of the changes are just to pass this new information
when it is easily available from InstSimplify, InstCombine, etc.
As explained below, the significant conceptual change is that known properties
of a value might depend on the control-flow location of the use (because we
care that the @llvm.assume dominates the use because assumptions have
control-flow dependencies). This means that, when we ask if bits are known in a
value, we might get different answers for different uses.
The significant changes are all in ValueTracking. Two main changes: First, as
with the rest of the code, new parameters need to be passed around. To make
this easier, I grouped them into a structure, and I made internal static
versions of the relevant functions that take this structure as a parameter. The
new code does as you might expect, it looks for @llvm.assume calls that make
use of the value we're trying to learn something about (often indirectly),
attempts to pattern match that expression, and uses the result if successful.
By making use of the AssumptionTracker, the process of finding @llvm.assume
calls is not expensive.
Part of the structure being passed around inside ValueTracking is a set of
already-considered @llvm.assume calls. This is to prevent a query using, for
example, the assume(a == b), to recurse on itself. The context and DT params
are used to find applicable assumptions. An assumption needs to dominate the
context instruction, or come after it deterministically. In this latter case we
only handle the specific case where both the assumption and the context
instruction are in the same block, and we need to exclude assumptions from
being used to simplify their own ephemeral values (those which contribute only
to the assumption) because otherwise the assumption would prove its feeding
comparison trivial and would be removed.
This commit adds the plumbing and the logic for a simple masked-bit propagation
(just enough to write a regression test). Future commits add more patterns
(and, correspondingly, more regression tests).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217342
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David Blaikie [Sun, 7 Sep 2014 17:31:42 +0000 (17:31 +0000)]
DebugInfo: Do not use DW_FORM_GNU_addr_index in skeleton CUs, GDB 7.8 errors on this.
It's probably not a huge deal to not do this - if we could, maybe the
address could be reused by a subprogram low_pc and avoid an extra
relocation, but it's just one per CU at best.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217338
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Hal Finkel [Sun, 7 Sep 2014 13:49:57 +0000 (13:49 +0000)]
Add functions for finding ephemeral values
This adds a set of utility functions for collecting 'ephemeral' values. These
are LLVM IR values that are used only by @llvm.assume intrinsics (directly or
indirectly), and thus will be removed prior to code generation, implying that
they should be considered free for certain purposes (like inlining). The
inliner's cost analysis, and a few other passes, have been updated to account
for ephemeral values using the provided functionality.
This functionality is important for the usability of @llvm.assume, because it
limits the "non-local" side-effects of adding llvm.assume on inlining, loop
unrolling, etc. (these are hints, and do not generate code, so they should not
directly contribute to estimates of execution cost).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217335
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Hal Finkel [Sun, 7 Sep 2014 12:44:26 +0000 (12:44 +0000)]
Add an Assumption-Tracking Pass
This adds an immutable pass, AssumptionTracker, which keeps a cache of
@llvm.assume call instructions within a module. It uses callback value handles
to keep stale functions and intrinsics out of the map, and it relies on any
code that creates new @llvm.assume calls to notify it of the new instructions.
The benefit is that code needing to find @llvm.assume intrinsics can do so
directly, without scanning the function, thus allowing the cost of @llvm.assume
handling to be negligible when none are present.
The current design is intended to be lightweight. We don't keep track of
anything until we need a list of assumptions in some function. The first time
this happens, we scan the function. After that, we add/remove @llvm.assume
calls from the cache in response to registration calls and ValueHandle
callbacks.
There are no new direct test cases for this pass, but because it calls it
validation function upon module finalization, we'll pick up detectable
inconsistencies from the other tests that touch @llvm.assume calls.
This pass will be used by follow-up commits that make use of @llvm.assume.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217334
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Chandler Carruth [Sun, 7 Sep 2014 12:37:11 +0000 (12:37 +0000)]
[x86] Revert my over-eager commit in r217332.
I hadn't actually run all the tests yet and these combines have somewhat
surprisingly far reaching effects.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217333
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Chandler Carruth [Sun, 7 Sep 2014 12:02:14 +0000 (12:02 +0000)]
[x86] Tweak the rules surrounding 0,0 and 1,1 v2f64 shuffles and add
support for MOVDDUP which is really important for matrix multiply style
operations that do lots of non-vector-aligned load and splats.
The original motivation was to add support for MOVDDUP as the lack of it
regresses matmul_f64_4x4 by 5% or so. However, all of the rules here
were somewhat suspicious.
First, we should always be using the floating point domain shuffles,
regardless of how many copies we have to make as a movapd is *crazy*
faster than the domain switching cost on some chips. (Mostly because
movapd is crazy cheap.) Because SHUFPD can't do the copy-for-free trick
of the PSHUF instructions, there is no need to avoid canonicalizing on
UNPCK variants, so do that canonicalizing. This also ensures we have the
chance to form MOVDDUP. =]
Second, we assume SSE2 support when doing any vector lowering, and given
that we should just use UNPCKLPD and UNPCKHPD as they can operate on
registers or memory. If vectors get spilled or come from memory at all
this is going to allow the load to be folded into the operation. If we
want to optimize for encoding size (the only difference, and only
a 2 byte difference) it should be done *much* later, likely after RA.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217332
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Hans Wennborg [Sun, 7 Sep 2014 05:14:29 +0000 (05:14 +0000)]
Try to unflake AllocatorTest.TestAlignmentPastSlab
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217331
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Hans Wennborg [Sun, 7 Sep 2014 04:24:31 +0000 (04:24 +0000)]
BumpPtrAllocator: do the size check without moving any pointers
Instead of aligning and moving the CurPtr forward, and then comparing
with End, simply calculate how much space is needed, and compare that
to how much is available.
Hopefully this avoids any doubts about comparing addresses possibly
derived from past the end of the slab array, overflowing, etc.
Also add a test where aligning CurPtr would move it past End.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217330
91177308-0d34-0410-b5e6-
96231b3b80d8