Nicolai Haehnle [Sat, 19 Dec 2015 01:36:26 +0000 (01:36 +0000)]
AMDGPU/SI: use S_MOV_B64 for larger copies in copyPhysReg
Reviewers: arsenm, tstellarAMD
Subscribers: arsenm, llvm-commits
Differential Revision: http://reviews.llvm.org/D15629
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256073
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Nicolai Haehnle [Sat, 19 Dec 2015 01:16:06 +0000 (01:16 +0000)]
AMDGPU: fix overlapping copies in copyPhysReg
Summary:
When copying aggregate registers within the same register class, there may
be an overlap between source and destination that forces us to do the copy
backwards.
Do the simplest possible thing that guarantees the correct order of moves
when there are overlaps, and does whatever when there is no overlap. (The
last part forces some trivial adjustments to test cases.)
Together with r255906, this fixes a VM fault in Unreal Elemental Demo.
While at it, change the generation of kill and def flags to something that
looks more reasonable. This method is used very late during compilation, so
it probably doesn't matter in practice, and to be honest, I don't know if
this change is actually correct because the semantics in connection with
aggregate registers vs. sub-registers are not clear to me.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93264
Reviewers: arsenm, tstellarAMD
Subscribers: arsenm, llvm-commits
Differential Revision: http://reviews.llvm.org/D15622
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256072
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Kostya Serebryany [Sat, 19 Dec 2015 01:09:49 +0000 (01:09 +0000)]
[libFuzzer] print successfull mutations sequences
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256071
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James Y Knight [Sat, 19 Dec 2015 00:53:22 +0000 (00:53 +0000)]
Possibly fix MSVC compilation after r256054.
I don't have any way to test MSVC compilation, but maybe this will fix
the error:
llvm/Support/TrailingObjects.h(286) : error C3210: 'TrailingObjectsBase' : access declaration can only be applied to a base class member
llvm/Support/TrailingObjects.h(337) : see reference to class template instantiation 'llvm::TrailingObjects<BaseTy,TrailingTys...>' being compiled
llvm/Support/TrailingObjects.h(286) : error C2602: 'llvm::trailing_objects_internal::TrailingObjectsBase::OverloadToken' is not a member of a base class of 'llvm::TrailingObjects<BaseTy,TrailingTys...>'
llvm/Support/TrailingObjects.h(91) : see declaration of 'llvm::trailing_objects_internal::TrailingObjectsBase::OverloadToken'
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256068
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Rafael Espindola [Fri, 18 Dec 2015 23:46:42 +0000 (23:46 +0000)]
Deprecate a few C APIs.
This deprecates:
* LLVMParseBitcode
* LLVMParseBitcodeInContext
* LLVMGetBitcodeModuleInContext
* LLVMGetBitcodeModule
They are replaced with the functions with a 2 suffix which do not record
a diagnostic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256065
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Xinliang David Li [Fri, 18 Dec 2015 23:06:37 +0000 (23:06 +0000)]
[PGO] Cleanup: Move large member functions out of line (NFC)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256058
91177308-0d34-0410-b5e6-
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Teresa Johnson [Fri, 18 Dec 2015 22:59:35 +0000 (22:59 +0000)]
Remove possibility of failures to due race in ThreadPool unittest
Remove all checks that required main thread to run faster than tasks in
ThreadPool, and yields which are now unnecessary. This should fix some
bot failures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256056
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James Y Knight [Fri, 18 Dec 2015 22:54:37 +0000 (22:54 +0000)]
Rewrite the TrailingObjects template to provide two new features:
- Automatic alignment of the base type for the alignment requirements
of the trailing types.
- Support for an arbitrary numbers of trailing types, instead of only
1 or 2, by using a variadic template implementation.
Upcoming commits to clang will take advantage of both of these features.
Differential Revision: http://reviews.llvm.org/D12439
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256054
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Rafael Espindola [Fri, 18 Dec 2015 22:44:07 +0000 (22:44 +0000)]
Delete dead code: only functions are materializable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256052
91177308-0d34-0410-b5e6-
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Rafael Espindola [Fri, 18 Dec 2015 22:40:27 +0000 (22:40 +0000)]
Use a lambda to reduce code duplication.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256050
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Rafael Espindola [Fri, 18 Dec 2015 22:23:16 +0000 (22:23 +0000)]
git-clang-format a region I am about to change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256048
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Xinliang David Li [Fri, 18 Dec 2015 22:22:12 +0000 (22:22 +0000)]
[PGO] Simplify computehash interface (NFC)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256047
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Alexey Samsonov [Fri, 18 Dec 2015 22:02:14 +0000 (22:02 +0000)]
[Symbolize] Improve the ownership of parsed objects.
This code changes the way Symbolize handles parsed binaries: now
parsed OwningBinary<Binary> is not broken into (binary, memory buffer)
pair, and is just stored as-is in a cache. ObjectFile components
of Mach-O universal binaries are also stored explicitly in a
separate cache.
Additionally, this change:
* simplifies the code that parses/caches binaries: it's now done
in a single place, not three different functions.
* makes flush() method behave as expected, and actually clear
the cached parsed binaries and objects.
* fixes a dangling pointer issue described in
http://reviews.llvm.org/D15638
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256041
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Alexey Samsonov [Fri, 18 Dec 2015 22:02:08 +0000 (22:02 +0000)]
[sancov] IWYU fix: add proper header inclusion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256040
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Cong Hou [Fri, 18 Dec 2015 21:53:24 +0000 (21:53 +0000)]
Use getEdgeProbability() instead of getEdgeWeight() in BFI and remove getEdgeWeight() interfaces from MBPI.
This patch removes all getEdgeWeight() interfaces from CodeGen directory. As
getEdgeProbability() is a little more expensive than getEdgeWeight(), I will
compose a patch soon in which BPI only stores probabilities instead of edge
weights so that getEdgeProbability() will have O(1) time.
Differential revision: http://reviews.llvm.org/D15489
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256039
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Jingyue Wu [Fri, 18 Dec 2015 21:44:26 +0000 (21:44 +0000)]
[DivergenceAnalysis] fix a bug in computing influence regions
Fixes PR25864
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256036
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Jingyue Wu [Fri, 18 Dec 2015 21:36:30 +0000 (21:36 +0000)]
[NaryReassociate] allow candidate to have a different type
Summary:
If Candiadte may have a different type from GEP, we should bitcast or
pointer cast it to GEP's type so that the later RAUW doesn't complain.
Added a test in nary-gep.ll
Reviewers: tra, meheff
Subscribers: mcrosier, llvm-commits, jholewinski
Differential Revision: http://reviews.llvm.org/D15618
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256035
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Rafael Espindola [Fri, 18 Dec 2015 21:23:32 +0000 (21:23 +0000)]
Revert "Enhance BranchProbabilityInfo::calcUnreachableHeuristics for InvokeInst"
This reverts commit r256028.
It broke:
LLVM :: CodeGen/Mips/eh.ll
LLVM :: CodeGen/Mips/insn-zero-size-bb.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256032
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Rafael Espindola [Fri, 18 Dec 2015 21:18:57 +0000 (21:18 +0000)]
Remove redundant argument. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256031
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Jun Bum Lim [Fri, 18 Dec 2015 20:53:47 +0000 (20:53 +0000)]
Enhance BranchProbabilityInfo::calcUnreachableHeuristics for InvokeInst
When identifying blocks post-dominated by an unreachable-terminated block
in BranchProbabilityInfo, consider only the edge to the normal destination
block if the terminator is InvokeInst and let calcInvokeHeuristics() decide
edge weights for the InvokeInst.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256028
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Krzysztof Parzyszek [Fri, 18 Dec 2015 20:19:30 +0000 (20:19 +0000)]
[Hexagon] Add PIC support
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256025
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Rafael Espindola [Fri, 18 Dec 2015 20:13:39 +0000 (20:13 +0000)]
Drop materializeAllPermanently.
This inlines materializeAll into the only caller
(materializeAllPermanently) and renames materializeAllPermanently to
just materializeAll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256024
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Changpeng Fang [Fri, 18 Dec 2015 20:04:28 +0000 (20:04 +0000)]
AMDGPU/SI: Test commit
Summary: This is just my first commit. Test!
Reviewers: none
Subscribers: none
Differential Revision: none
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256022
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Changpeng Fang [Fri, 18 Dec 2015 20:04:26 +0000 (20:04 +0000)]
Revert "AMDGPU/SI: Test commit"
This reverts commit
a493cb636e0152ad28210934a47c6c44b1437193.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256021
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Changpeng Fang [Fri, 18 Dec 2015 19:57:41 +0000 (19:57 +0000)]
AMDGPU/SI: Test commit
Summary: This is just my first commit. Test!
Reviewers: none
Subscribers: none
Differential Revision: none
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256020
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Rafael Espindola [Fri, 18 Dec 2015 19:57:26 +0000 (19:57 +0000)]
Drop support for dematerializing.
It was only used on lib/Linker and the use was "dead" since it was used on a
function the IRMover had just moved.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256019
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Pete Cooper [Fri, 18 Dec 2015 19:45:38 +0000 (19:45 +0000)]
Revert "Improve DWARFDebugFrame::parse to also handle __eh_frame."
This reverts commit r256008.
Its breaking multiple buildbots, although works for me locally.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256013
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Teresa Johnson [Fri, 18 Dec 2015 19:28:59 +0000 (19:28 +0000)]
Rename variables to reflect linker split (NFC)
Renamed variables to be more reflective of whether they are
an instance of Linker, IRLinker or ModuleLinker. Also fix a stale
comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256011
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Eric Christopher [Fri, 18 Dec 2015 18:55:26 +0000 (18:55 +0000)]
Convert Arg, ArgList, and Option to dump() to dbgs() rather than errs().
Also add print() functions.
Patch by Justin Lebar!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256010
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Eric Christopher [Fri, 18 Dec 2015 18:55:22 +0000 (18:55 +0000)]
Add a dump method for ArgList.
Patch by Justin Lebar!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256009
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Pete Cooper [Fri, 18 Dec 2015 18:51:08 +0000 (18:51 +0000)]
Improve DWARFDebugFrame::parse to also handle __eh_frame.
LLVM MC has single methods which can handle the output of EH frame and DWARF CIE's and FDE's.
This code improves DWARFDebugFrame::parse to do the same for parsing.
This also allows llvm-objdump to support the --dwarf=frames option which objdump supports. This
option dumps the .eh_frame section using the new code in DWARFDebugFrame::parse.
http://reviews.llvm.org/D15535
Reviewed by Rafael Espindola.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256008
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Krzysztof Parzyszek [Fri, 18 Dec 2015 18:47:27 +0000 (18:47 +0000)]
Recognize strings for Hexagon-specific variant kinds
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256007
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Andrew Kaylor [Fri, 18 Dec 2015 18:12:35 +0000 (18:12 +0000)]
[WinEH] Update LCSSA to handle catchswitch with handlers inside and outside a loop
Differential Revision: http://reviews.llvm.org/D15630
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256005
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Jun Bum Lim [Fri, 18 Dec 2015 18:08:30 +0000 (18:08 +0000)]
[AArch64] Promote loads from stores
This change promotes load instructions which directly read from stores by
replacing them with mov instructions. If the store is wider than the load,
the load will be replaced with a bitfield extract.
For example :
STRWui %W1, %X0, 1
%W0 = LDRHHui %X0, 3
becomes
STRWui %W1, %X0, 1
%W0 = UBFMWri %W1, 16, 31
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256004
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Teresa Johnson [Fri, 18 Dec 2015 17:51:37 +0000 (17:51 +0000)]
[ThinLTO/LTO] Don't link in unneeded metadata
Summary:
Third patch split out from http://reviews.llvm.org/D14752.
Only map in needed DISubroutine metadata (imported or otherwise linked
in functions and other DISubroutine referenced by inlined instructions).
This is supported for ThinLTO, LTO and llvm-link --only-needed, with
associated tests for each one.
Depends on D14838.
Reviewers: dexonsmith, joker.eph
Subscribers: davidxl, llvm-commits, joker.eph
Differential Revision: http://reviews.llvm.org/D14843
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256003
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Rafael Espindola [Fri, 18 Dec 2015 16:07:17 +0000 (16:07 +0000)]
Handle archives with paths in the names.
We always create archives with just he filename as the member name, but
other archives can put a more complicated path in there.
This patches handles it by computing just the filename as we do when
adding a new member.
If storing the path is important for some reason, we should probably
have an orthogonal option for doing that and do it for both old and new
members.
Fixes pr25877.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256001
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Rafael Espindola [Fri, 18 Dec 2015 14:06:34 +0000 (14:06 +0000)]
clang-format to reduce diff in another patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255999
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Rafael Espindola [Fri, 18 Dec 2015 13:58:05 +0000 (13:58 +0000)]
Fix error handling in LLVMGetBitcodeModuleInContext.
It was not setting OutMessage.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255998
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Vaivaswatha Nagaraj [Fri, 18 Dec 2015 11:02:52 +0000 (11:02 +0000)]
GlobalsAA: Take advantage of ArgMemOnly, InaccessibleMemOnly and InaccessibleMemOrArgMemOnly attributes
Summary:
1. Modify AnalyzeCallGraph() to retain function info for external functions
if the function has [InaccessibleMemOr]ArgMemOnly flags.
2. When analyzing the use of a global is function parameter at a call site,
mark the callee also as modifying the global appropriately.
3. Add additional test cases.
Depends on D15499
Reviewers: hfinkel, jmolloy
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D15605
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255994
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Zlatko Buljan [Fri, 18 Dec 2015 08:59:37 +0000 (08:59 +0000)]
[mips][microMIPS][DSP] Implement PACKRL.PH, PICK.PH, PICK.QB, SHILO, SHILOV and WRDSP instructions
Differential Revision: http://reviews.llvm.org/D14429
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255991
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Rafael Espindola [Fri, 18 Dec 2015 03:57:26 +0000 (03:57 +0000)]
Add a test for LLVMGetBitcodeModule.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255985
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Philip Reames [Fri, 18 Dec 2015 03:53:28 +0000 (03:53 +0000)]
[RS4GC] Use an value handle to help isolate errors quickly
Inspired by the bug reported in 25846. Whatever we end up doing about that one, the value handle change is a generally good one since it will help catch this type of mistake more quickly.
Patch by: Manuel Jacob
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255984
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Rafael Espindola [Fri, 18 Dec 2015 03:04:52 +0000 (03:04 +0000)]
clang-format to reduce diff in another patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255981
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Vedant Kumar [Fri, 18 Dec 2015 02:30:45 +0000 (02:30 +0000)]
Revert "[Option] Introduce Arg::print(raw_ostream&) and use llvm::dbgs"
This reverts commit r255977. This is part of
http://reviews.llvm.org/D15634.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255978
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Vedant Kumar [Fri, 18 Dec 2015 02:27:52 +0000 (02:27 +0000)]
[Option] Introduce Arg::print(raw_ostream&) and use llvm::dbgs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255977
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Eric Christopher [Fri, 18 Dec 2015 01:46:52 +0000 (01:46 +0000)]
Reorganize the C API headers to improve build times.
Type specific declarations have been moved to Type.h and error handling
routines have been moved to ErrorHandling.h. Both are included in Core.h
so nothing should change for projects directly including the headers,
but transitive dependencies may be affected.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255965
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NAKAMURA Takumi [Fri, 18 Dec 2015 00:18:18 +0000 (00:18 +0000)]
BranchProbabilityTest.cpp: Suppress warnings. [-Wsign-compare]
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255940
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Eric Christopher [Thu, 17 Dec 2015 23:43:40 +0000 (23:43 +0000)]
Remove unused class variables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255939
91177308-0d34-0410-b5e6-
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Hans Wennborg [Thu, 17 Dec 2015 23:18:39 +0000 (23:18 +0000)]
[X86] Use push-pop for materializing small constants under 'minsize'
Use the 3-byte (4 with REX prefix) push-pop sequence for materializing
small constants. This is smaller than using a mov (5, 6 or 7 bytes
depending on size and REX prefix), but it's likely to be slower, so
only used for 'minsize'.
This is a follow-up to r255656.
Differential Revision: http://reviews.llvm.org/D15549
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255936
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Cong Hou [Thu, 17 Dec 2015 22:27:07 +0000 (22:27 +0000)]
[BranchProbability] Remove the restriction that known and unknown probabilities cannot coexist when being normalized.
The current BranchProbability::normalizeProbabilities() forbids known and
unknown probabilities to coexist in the list. This was once used to help
capture probability exceptions but has caused some reported build
failures (https://llvm.org/bugs/show_bug.cgi?id=25838).
This patch removes this restriction by evenly distributing the complement
of the sum of all known probabilities to unknown ones. We could still
treat this as an abnormal behavior, but it is better to emit warnings in
our future profile validator.
Differential revision: http://reviews.llvm.org/D15548
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255934
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Philip Reames [Thu, 17 Dec 2015 22:19:27 +0000 (22:19 +0000)]
[InstCombine] Extend peephole DSE to handle unordered atomics
This extends the same line of reasoning used in EarlyCSE w/http://reviews.llvm.org/D15352 to the DSE implementation in InstCombine.
Key points:
* We only remove unordered or simple stores.
* The loads producing values consumed by dead stores don't influence whether the store is dead.
Differential Revision: http://reviews.llvm.org/D15354
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255932
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JF Bastien [Thu, 17 Dec 2015 22:09:19 +0000 (22:09 +0000)]
Polish atomic pointers
Summary:
I didn't realize that we already allowed atomic load/store of pointers,
it was added in 2012 by r162146. This patch updates the documentation
and tightens the verifier by using DataLayout to make sure that the
stored size is byte-sized and power-of-two. DataLayout is also used for
integers, and while I'm here I updated the corresponding code for
cmpxchg and rmw.
See the following discussion for context and upcoming changes to
add floating-point and vector atomics:
https://groups.google.com/forum/#!topic/llvm-dev/Nh0P_E3CRoo/discussion
Reviewers: reames
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D15512
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255931
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Rafael Espindola [Thu, 17 Dec 2015 21:56:27 +0000 (21:56 +0000)]
Pass -m elf_x84_64 to gold invocations.
Fixes pr25868.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255930
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Matthew Simpson [Thu, 17 Dec 2015 21:29:47 +0000 (21:29 +0000)]
Revert "[AArch64] Add DAG combine for extract extend pattern"
This reverts commit r255895. The patch breaks internal tests. Reverting until a
fix is ready.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255928
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Rafael Espindola [Thu, 17 Dec 2015 21:16:12 +0000 (21:16 +0000)]
Drop function that are deprecated since 2010.
These functions were deprecated in r97608.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255927
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Dave Bartolomeo [Thu, 17 Dec 2015 20:54:16 +0000 (20:54 +0000)]
Test commit
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255926
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Dan Gohman [Thu, 17 Dec 2015 20:50:45 +0000 (20:50 +0000)]
[WebAssembly] Switch WebAssemblyMCAsmInfo.h from MCAsmInfo to MCAsmInfoELF.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255925
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Vedant Kumar [Thu, 17 Dec 2015 20:49:48 +0000 (20:49 +0000)]
[docs] Motivate ninja in GettingStarted.rst
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255924
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Sanjoy Das [Thu, 17 Dec 2015 20:28:46 +0000 (20:28 +0000)]
[SCEV] Add and use SCEVConstant::getAPInt; NFCI
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255921
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Weiming Zhao [Thu, 17 Dec 2015 19:53:41 +0000 (19:53 +0000)]
[InstCombine] Adding "\n" to debug output. NFC.
Summary:
[InstCombine] Adding '\n' to debug output. NFC.
Patch by Zhaoshi Zheng <zhaoshiz@codeaurora.org>
Reviewers: apazos, majnemer, weimingz
Subscribers: arsenm, llvm-commits
Differential Revision: http://reviews.llvm.org/D15403
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255920
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Adrian Prantl [Thu, 17 Dec 2015 19:33:56 +0000 (19:33 +0000)]
Hardcode the target in this testcase — it depends on the ABI.
This fixes a failure on Windows buildbots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255919
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Philip Reames [Thu, 17 Dec 2015 18:50:50 +0000 (18:50 +0000)]
[EarlyCSE] DSE of atomic unordered stores
The rules for removing trivially dead stores are a lot less complicated than loads. Since we know the later store post dominates the former and the former dominates the later, unless the former has side effects other than the actual store, we can remove it. One slightly surprising thing is that we can freely remove atomic stores, even if the later one isn't atomic. There's no guarantee the atomic one was every visible.
For the moment, we don't handle DSE of ordered atomic stores. We could extend the same chain of reasoning to them, but the catch is we'd then have to model the ordering effect without a store instruction. Since our fences are a stronger than our operation orderings, simple using a fence isn't an obvious win. This arguable calls for a refinement in our fence specification, but that's (much) later work.
Differential Revision: http://reviews.llvm.org/D15352
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255914
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Adrian Prantl [Thu, 17 Dec 2015 18:34:37 +0000 (18:34 +0000)]
make this test less whitespace-sensitive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255913
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Adrian Prantl [Thu, 17 Dec 2015 18:25:51 +0000 (18:25 +0000)]
Rewrite test to use llvm-dwarfdump instead of checking for asm comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255912
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Teresa Johnson [Thu, 17 Dec 2015 17:14:09 +0000 (17:14 +0000)]
[ThinLTO] Metadata linking for imported functions
Summary:
Second patch split out from http://reviews.llvm.org/D14752.
Maps metadata as a post-pass from each module when importing complete,
suturing up final metadata to the temporary metadata left on the
imported instructions.
This entails saving the mapping from bitcode value id to temporary
metadata in the importing pass, and from bitcode value id to final
metadata during the metadata linking postpass.
Depends on D14825.
Reviewers: dexonsmith, joker.eph
Subscribers: davidxl, llvm-commits, joker.eph
Differential Revision: http://reviews.llvm.org/D14838
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255909
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Tom Stellard [Thu, 17 Dec 2015 17:05:09 +0000 (17:05 +0000)]
AMDGPU/SI: Reserve appropriate number of sgprs for flat scratch init.
Reviewers: tstellarAMD
Subscribers: arsenm, llvm-commits
Differential Revision: http://reviews.llvm.org/D15583
Patch by: Changpeng Fang
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255908
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Nicolai Haehnle [Thu, 17 Dec 2015 16:46:42 +0000 (16:46 +0000)]
AMDGPU: Fix off-by-one in SIRegisterInfo::eliminateFrameIndex
Summary:
The method insertNOPs expected the number of wait states to be passed as
parameter, while eliminateFrameIndex passed the immediate argument for the
S_NOP, leading to an off-by-one error. Rename the method to make the
meaning of its parameter clearer. The number of 4 / 5 wait states (which
is what the method has always _tried_ to do according to the comment) is
correct according to the hardware docs.
I stumbled upon this while trying to track down the cause of
https://bugs.freedesktop.org/show_bug.cgi?id=93264. While clearly needed,
this patch unfortunately does not fix that bug...
Reviewers: arsenm, tstellarAMD
Subscribers: arsenm, llvm-commits
Differential Revision: http://reviews.llvm.org/D15542
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255906
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Andy Gibbs [Thu, 17 Dec 2015 16:43:53 +0000 (16:43 +0000)]
Revert r254592 (virtual dtor in SCEVPredicate).
Clang has better diagnostics in this case. It is not necessary therefore
to change the destructor to avoid what is effectively an invalid warning
in gcc. Instead, better handle the warning flags given to the compiler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255905
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Teresa Johnson [Thu, 17 Dec 2015 16:34:53 +0000 (16:34 +0000)]
Mark a couple ModuleLinker member functions as const (NFC)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255903
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Rafael Espindola [Thu, 17 Dec 2015 16:22:06 +0000 (16:22 +0000)]
Avoid explicit relocation sorting most of the time.
These days relocations are created and stored in a deterministic way.
The order they are created is also suitable for the .o file, so we don't
need an explicit sort.
The last remaining exception is MIPS.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255902
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Rafael Espindola [Thu, 17 Dec 2015 15:12:26 +0000 (15:12 +0000)]
Revert "[AArch64] Enable PostRAScheduler for AArch64 generic build"
This reverts commit r255896. It broke the tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255899
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Rafael Espindola [Thu, 17 Dec 2015 15:08:24 +0000 (15:08 +0000)]
Always sort by offset first. NFC.
Every target changing sortRelocs was first calling the parent
implementation. Just run that first.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255898
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Diego Novillo [Thu, 17 Dec 2015 14:58:34 +0000 (14:58 +0000)]
Fix unused variable warning in release builds. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255897
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MinSeong Kim [Thu, 17 Dec 2015 14:51:22 +0000 (14:51 +0000)]
[AArch64] Enable PostRAScheduler for AArch64 generic build
This patch enables PostRAScheduler specifically for AArch64 generic build,
which is beneficial from the performance perspective.
Speedups up to 2 to 7% for some benchmarks on A57 and A53 are observed.
Also benchmarks from LLVM test-suite did not regress.
Differential Revision: http://reviews.llvm.org/D15557
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255896
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Matthew Simpson [Thu, 17 Dec 2015 14:30:55 +0000 (14:30 +0000)]
[AArch64] Add DAG combine for extract extend pattern
This patch adds a DAG combine for (any_extend (extract_vector_elt v, i)) ->
(extract_vector_elt v, i). The combine enables us to better match some SMOV
patterns.
Differential Revision: http://reviews.llvm.org/D15515
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255895
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Rafael Espindola [Thu, 17 Dec 2015 14:19:52 +0000 (14:19 +0000)]
Simplify. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255894
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Tobias Grosser [Thu, 17 Dec 2015 12:48:25 +0000 (12:48 +0000)]
DOTGraphTraits: Allow the decision to show a graph to consider the analysis
The method processFunction() is called to decide if a graph should be shown for
a certain function. To allow DOTGraphTraitViewers to take this decision based
on the analysis results for the given function, we forward a reference to the
analysis result. This will be used by Polly to only visualize functions where
interesting loop regions have been detected.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255889
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Alexander Kornienko [Thu, 17 Dec 2015 12:19:05 +0000 (12:19 +0000)]
Removed empty directory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255888
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Alexey Bataev [Thu, 17 Dec 2015 07:34:39 +0000 (07:34 +0000)]
[X86] Add option for enabling LEA optimization pass, by Andrey Turetsky
Add option to enable/disable LEA optimization pass. By default the pass is disabled.
Differential Revision: http://reviews.llvm.org/D15573
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255881
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Dan Gohman [Thu, 17 Dec 2015 04:55:44 +0000 (04:55 +0000)]
[WebAssembly] Convert WebAssemblyTargetObjectFile to TargetLoweringObjectFileELF
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255877
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Matthias Braun [Thu, 17 Dec 2015 03:18:47 +0000 (03:18 +0000)]
AArch64: Simplify emitEpilogue() and related code; NFC
This is in preparation to an upcoming patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255872
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Davide Italiano [Thu, 17 Dec 2015 01:59:50 +0000 (01:59 +0000)]
[llvm-objdump] Use report_fatal_error() for a more uniform error handling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255871
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Dan Gohman [Thu, 17 Dec 2015 01:39:00 +0000 (01:39 +0000)]
[WebAssembly] Experimental ELF writer support
This creates the initial infrastructure for writing ELF output files. It
doesn't yet have any implementation for encoding instructions.
Differential Revision: http://reviews.llvm.org/D15555
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255869
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Cong Hou [Thu, 17 Dec 2015 01:29:08 +0000 (01:29 +0000)]
Fix PR25838.
This is a quick fix to PR25838. The issue comes from the restriction that we
cannot normalize probabilities containing both known and unknown ones. A patch
that removes this restriction is under the review now:
http://reviews.llvm.org/D15548
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255867
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Xinliang David Li [Thu, 17 Dec 2015 00:53:37 +0000 (00:53 +0000)]
[PGO] InstrPGO and coverage code refactoring (NFC)
Introduce a new class InstrProfSymtab to abstract
the PGO symbol table for prof and coverage reader.
The symtab is is to lookup function's PGO name
using function keys. The first user of the class
is CoverageMapping Reader. More will follow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255862
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JF Bastien [Thu, 17 Dec 2015 00:12:06 +0000 (00:12 +0000)]
WebAssembly: update expected torture test failures
We now have 240 expected failures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255858
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Rafael Espindola [Wed, 16 Dec 2015 23:49:14 +0000 (23:49 +0000)]
Use std::unique_ptr. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255852
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Dan Gohman [Wed, 16 Dec 2015 23:25:51 +0000 (23:25 +0000)]
[WebAssembly] Fix legalization of shift operators on large integer types.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255847
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Derek Schuff [Wed, 16 Dec 2015 23:21:30 +0000 (23:21 +0000)]
[WebAssembly] Implement eliminateCallFramePseudo
Summary:
Implement eliminateCallFramePsuedo to handle ADJCALLSTACKUP/DOWN
pseudo-instructions. Add a test calling a vararg function which causes non-0
adjustments. This revealed an issue with RegisterCoalescer wherein it
eliminates a COPY from SP32 to a vreg but failes to update the live ranges
of EXPR_STACK, causing a machineinstr verifier failure (so this test
is commented out).
Also add a dynamic alloca test, which causes a callseq_end dag node with
a 0 (instead of undef) second argument to be generated. We currently fail to
select that, so adjust the ADJCALLSTACKUP tablegen code to handle it.
Differential Revision: http://reviews.llvm.org/D15587
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255844
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Rafael Espindola [Wed, 16 Dec 2015 23:16:33 +0000 (23:16 +0000)]
Change linkInModule to take a std::unique_ptr.
Passing in a std::unique_ptr should help find errors when the module
is used after being linked into another module.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255842
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Eric Christopher [Wed, 16 Dec 2015 23:10:53 +0000 (23:10 +0000)]
Fix funciton->function typo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255841
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Rafael Espindola [Wed, 16 Dec 2015 22:59:06 +0000 (22:59 +0000)]
Drop an unnecessary use of writev.
It looks like the code this patch deletes is based on a misunderstanding of
what guarantees writev provides. In particular, writev with 1 iovec is
not "more atomic" than a write.
Testing on OS X shows that both write and writev from multiple processes
can be intermixed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255837
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Ahmed Bougacha [Wed, 16 Dec 2015 22:54:06 +0000 (22:54 +0000)]
[AArch64] Simplify some TRI/TII getters. NFC.
We don't need static_casts when we use the right Subtarget.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255836
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NAKAMURA Takumi [Wed, 16 Dec 2015 22:44:10 +0000 (22:44 +0000)]
Move llvm/test/DebugInfo/live-debug-values.ll into X86, due to target triple.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255834
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Rafael Espindola [Wed, 16 Dec 2015 22:28:34 +0000 (22:28 +0000)]
Simplify memory management with std::unique_ptr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255831
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Ahmed Bougacha [Wed, 16 Dec 2015 22:15:30 +0000 (22:15 +0000)]
[CodeGen] Make MachineInstrBuilder::copyImplicitOps const. NFC.
This matches the other MIB methods, none of which modify the builder.
Without this, we can't chain copyImplicitOps.
Also reformat the few users, in PPCEarlyReturn.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255828
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Nathan Slingerland [Wed, 16 Dec 2015 21:45:43 +0000 (21:45 +0000)]
[PGO] Handle and report overflow during profile merge for all types of data
Summary: Surface counter overflow when merging profile data. Merging still occurs on overflow but counts saturate to the maximum representable value. Overflow is reported to the user.
Reviewers: davidxl, dnovillo, silvas
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D15547
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255825
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Teresa Johnson [Wed, 16 Dec 2015 21:37:48 +0000 (21:37 +0000)]
Use LLVM style variable name (NFC)
Fixes variable name from r255779.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255824
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Manman Ren [Wed, 16 Dec 2015 21:04:19 +0000 (21:04 +0000)]
CXX_FAST_TLS calling convention: performance improvement for AArch64.
The access function has a short entry and a short exit, the initialization
block is only run the first time. To improve the performance, we want to
have a short frame at the entry and exit.
We explicitly handle most of the CSRs via copies. Only the CSRs that are not
handled via copies will be in CSR_SaveList.
Frame lowering and prologue/epilogue insertion will generate a short frame
in the entry and exit according to CSR_SaveList. The majority of the CSRs will
be handled by register allcoator. Register allocator will try to spill and
reload them in the initialization block.
We add CSRsViaCopy, it will be explicitly handled during lowering.
1> we first set FunctionLoweringInfo->SplitCSR if conditions are met (the target
supports it for the given machine function and the function has only return
exits). We also call TLI->initializeSplitCSR to perform initialization.
2> we call TLI->insertCopiesSplitCSR to insert copies from CSRsViaCopy to
virtual registers at beginning of the entry block and copies from virtual
registers to CSRsViaCopy at beginning of the exit blocks.
3> we also need to make sure the explicit copies will not be eliminated.
The target independent portion was committed as r255353.
rdar://problem/
23557469
Differential Revision: http://reviews.llvm.org/D15341
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255821
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Krzysztof Parzyszek [Wed, 16 Dec 2015 20:57:07 +0000 (20:57 +0000)]
[Hexagon] Update e_flags in the ELF definitions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255820
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