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Davide Italiano [Sun, 21 May 2017 20:30:27 +0000 (20:30 +0000)]
[InstCombine] Take in account the size in sext->lshr->trunc patterns.
Otherwise we end up miscompiling, transforming:
define i8 @tinky() {
%sext = sext i1 1 to i16
%hibit = lshr i16 %sext, 15
%tr = trunc i16 %hibit to i8
ret i8 %tr
}
into:
%sext = sext i1 1 to i8
ret i8 %sext
and the first get folded to ret i8 1, while the second gets folded
to ret i8 -1.
Eventually we should get rid of this transform entirely, but for now,
this at least fixes a know correctness bug.
Differential Revision: https://reviews.llvm.org/D33338
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303513
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Sanjay Patel [Sun, 21 May 2017 15:18:52 +0000 (15:18 +0000)]
[InstCombine] add tests for potential (lshr(sext X), C) folds; NFC
As discussed in:
https://reviews.llvm.org/D33338
...we may be able to remove a wider pattern match by doing these more
basic canonicalizations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303504
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Igor Breger [Sun, 21 May 2017 11:13:56 +0000 (11:13 +0000)]
[GlobalISel][X86] Fix G_TRUNC instruction selection.
Updated tests with -verify-machineinstrs flag.
It fixes 3 tests failed with machine verifier enabled and listed
in PR27481
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303502
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Hiroshi Inoue [Sun, 21 May 2017 06:00:05 +0000 (06:00 +0000)]
Summary
PPC backend eliminates compare instructions by using record-form instructions in PPCInstrInfo::optimizeCompareInstr, which is called from peephole optimization pass.
This patch improves this optimization to eliminate more compare instructions in two types of common case.
- comparison against a constant 1 or -1
The record-form instructions set CR bit based on signed comparison against 0. So, the current implementation does not exploit the record-form instruction for comparison against a non-zero constant.
This patch enables record-form optimization for constant of 1 or -1 if possible; it changes the condition "greater than -1" into "greater than or equal to 0" and "less than 1" into "less than or equal to 0".
With this patch, compare can be eliminated in the following code sequence, as an example.
uint64_t a, b;
if ((a | b) & 0x8000000000000000ull) { ... }
else { ... }
- andi for 32-bit comparison on PPC64
Since record-form instructions execute 64-bit signed comparison and so we have limitation in eliminating 32-bit comparison, i.e. with cmplwi, using the record-form. The original implementation already has such checks but andi. is not recognized as an instruction which executes implicit zero extension and hence safe to convert into record-form if used for equality check.
%1 = and i32 %a, 10
%2 = icmp ne i32 %1, 0
br i1 %2, label %foo, label %bar
In this simple example, LLVM generates andi. + cmplwi + beq on PPC64.
This patch make it possible to eliminate the cmplwi for this case.
I added andi. for optimization targets if it is safe to do so.
Differential Revision: https://reviews.llvm.org/D30081
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303500
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George Burgess IV [Sun, 21 May 2017 05:31:29 +0000 (05:31 +0000)]
[Docs] Fix LangRef links referred in GetElementPtr.rst
Patch by chenwj!
Differential Revision: https://reviews.llvm.org/D32929
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303499
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Sanjoy Das [Sun, 21 May 2017 05:02:12 +0000 (05:02 +0000)]
Revert "[SCEV] Clarify behavior around max backedge taken count"
This reverts commit r303497 since it breaks the msan bootstrap bot:
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap/builds/1379/
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303498
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Sanjoy Das [Sun, 21 May 2017 01:47:50 +0000 (01:47 +0000)]
[SCEV] Clarify behavior around max backedge taken count
This change makes the split between the "exact" backedge taken count
and the "maximum" backedge taken count a bit more obvious. Both of
these are upper bounds on the number of times the loop header
executes (since SCEV does not account for most kinds of abnormal
control flow), but the latter is guaranteed to be a constant.
There were a few places where the max backedge taken count *was* a
non-constant; I've changed those to compute constants instead.
At this point, I'm not sure if the constant max backedge count can be
computed by calling `getUnsignedRange(Exact).getUnsignedMax()` without
losing precision. If it can, we can simplify even further by making
`getMaxBackedgeTakenCount` a thin wrapper around
`getBackedgeTakenCount` and `getUnsignedRange`.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303497
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Xin Tong [Sun, 21 May 2017 00:37:55 +0000 (00:37 +0000)]
Revert "Add pthread_self function prototype and make it speculatable."
This reverts commit
143d7445b5dfa2f6d6c45bdbe0433d9fc531be21.
Build breaking
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303496
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Xin Tong [Sat, 20 May 2017 22:40:25 +0000 (22:40 +0000)]
Add pthread_self function prototype and make it speculatable.
Summary: This allows pthread_self to be pulled out of a loop by LICM.
Reviewers: hfinkel, arsenm, davide
Reviewed By: davide
Subscribers: davide, wdng, llvm-commits
Differential Revision: https://reviews.llvm.org/D32782
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303495
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Martell Malone [Sat, 20 May 2017 21:54:15 +0000 (21:54 +0000)]
COFF: Fix another StringRef return error
This should appease the lld build bot regression
Following up on rL303493
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303494
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Martell Malone [Sat, 20 May 2017 21:00:36 +0000 (21:00 +0000)]
COFF: Fix single StringRef return error
This should appease the lld build bot regression
Intrroduced by rL303490
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303493
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Martell Malone [Sat, 20 May 2017 19:56:29 +0000 (19:56 +0000)]
COFF: migrate def parser from LLD to LLVM [1/2]
This is split up into two commits.
The will create the DEF parser in LLVM.
Check the following commit to see the removal from LLD
Reviewers: ruiu
Differential Revision: https://reviews.llvm.org/D32689
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303490
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Xin Tong [Sat, 20 May 2017 19:40:24 +0000 (19:40 +0000)]
Fix test typo. NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303489
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Duncan P. N. Exon Smith [Sat, 20 May 2017 05:25:19 +0000 (05:25 +0000)]
Docs: Fix pluralization in CMake docs
Fixed "most platform" to read "most platforms", and changed "are not
using the same" to "use different" as a drive-by.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303487
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George Burgess IV [Sat, 20 May 2017 04:52:29 +0000 (04:52 +0000)]
[docs] Small style nits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303486
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David Blaikie [Sat, 20 May 2017 03:32:51 +0000 (03:32 +0000)]
Fix -Wunneeded-internal-declaration by removing constant arrays only used in sizeof expressions, in favor of constants containing the size directly
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303483
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David Blaikie [Sat, 20 May 2017 03:32:49 +0000 (03:32 +0000)]
llvm-symbolizer: Support multiple CUs in a single DWO file
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303482
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Eric Beckmann [Sat, 20 May 2017 01:49:19 +0000 (01:49 +0000)]
Add functionality to cvtres to parse all entries in res file.
Summary: Added the new modules in the Object/ folder. Updated the
llvm-cvtres interface as well, and added additional tests.
Subscribers: llvm-commits, mgorny
Differential Revision: https://reviews.llvm.org/D33180
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303480
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Matthias Braun [Sat, 20 May 2017 01:28:52 +0000 (01:28 +0000)]
Fix breakage after r303461
- Improve wchar_t size predicitions based on target triple.
- Be less strict in wchar_t size verifier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303477
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Davide Italiano [Sat, 20 May 2017 00:46:54 +0000 (00:46 +0000)]
[NewGVN] Create a StoreExpression instead of a VariableExpression.
In the case where we have an operand defined by a lod of the
same memory location. Historically this was a VariableExpression
because we wanted to make sure they ended up in the same class,
but if we create the right expression, they end up in the same
class anyway.
Fixes PR32897. Thanks to Dan for the detailed discussion and the
fix suggestion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303475
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Davide Italiano [Sat, 20 May 2017 00:24:04 +0000 (00:24 +0000)]
[NewGVN] Get rid of an assertion.
This was here because we don't want to switch leaders too much,
in order to avoid fixpoint(ing) issue, but it's not sure if it
matters in practice.
A first step towards fixing PR32897.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303473
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Galina Kistanova [Sat, 20 May 2017 00:02:08 +0000 (00:02 +0000)]
Cosmetic. Added braces to address gcc warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else].
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303471
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Adrian Prantl [Sat, 20 May 2017 00:00:08 +0000 (00:00 +0000)]
Revert "Revert "ThinLTO: Verify bitcode before lauching the ThinLTOCodeGenerator.""
This reapplies commit r303438 modified to not verify cross-imported
bitcode in FunctionImporter.
rdar://problem/
31233625
Differential Revision: https://reviews.llvm.org/D33370
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303470
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Adrian Prantl [Fri, 19 May 2017 23:32:21 +0000 (23:32 +0000)]
Revert "ThinLTO: Verify bitcode before lauching the ThinLTOCodeGenerator."
This reverts commit r303438 while deliberating buildbot breakage.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303467
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Matthias Braun [Fri, 19 May 2017 22:37:09 +0000 (22:37 +0000)]
SimplifyLibCalls: Optimize wcslen
Refactor the strlen optimization code to work for both strlen and wcslen.
This especially helps with programs in the wild where people pass
L"string"s to const std::wstring& function parameters and the wstring
constructor gets inlined.
This also fixes a lingerind API problem/bug in getConstantStringInfo()
where zeroinitializers would always give you an empty string (without a
length) back regardless of the actual length of the initializer which
did not work well in the TrimAtNul==false causing the PR mentioned
below.
Note that the fixed getConstantStringInfo() needed fixes to SelectionDAG
memcpy lowering and may lead to some cases for out-of-bounds
zeroinitializer accesses not getting optimized anymore. So some code
with UB may produce out of bound memory reads now instead of just
producing zeros.
The refactoring "accidentally" fixes http://llvm.org/PR32124
Differential Revision: https://reviews.llvm.org/D32839
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303461
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Matthias Braun [Fri, 19 May 2017 22:37:01 +0000 (22:37 +0000)]
Verifier: Check wchar_size module flag.
Differential Revision: https://reviews.llvm.org/D32974
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303460
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Reid Kleckner [Fri, 19 May 2017 22:23:47 +0000 (22:23 +0000)]
Fix off-by-one bug in AttributeList::addAttributes index handling
getParamAlignment expects an argument number, not an AttributeList
index.
Johan Englan, who works on LDC, found this bug and told me about it off
list.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303458
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Galina Kistanova [Fri, 19 May 2017 21:08:28 +0000 (21:08 +0000)]
Added LLVM_FALLTHROUGH to address gcc warning: this statement may fall through.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303457
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Evgeniy Stepanov [Fri, 19 May 2017 20:58:48 +0000 (20:58 +0000)]
[safestack] Disable stack coloring by default.
Workaround for apparent miscompilation of PR32143.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303456
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Galina Kistanova [Fri, 19 May 2017 20:31:51 +0000 (20:31 +0000)]
Added missing break.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303454
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Daniel Berlin [Fri, 19 May 2017 20:22:20 +0000 (20:22 +0000)]
NewGVN: Fix PR32838.
This is a complicated bug involving two issues:
1. What do we do with phi nodes when we prove all arguments are not
live?
2. When is it safe to use value leaders to determine if we can ignore
an argumnet?
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303453
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Daniel Berlin [Fri, 19 May 2017 20:22:14 +0000 (20:22 +0000)]
NewGVN: Print out the StoredValue of a StoreExpression
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303452
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Simon Pilgrim [Fri, 19 May 2017 19:47:29 +0000 (19:47 +0000)]
Fix line-endings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303448
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Davide Italiano [Fri, 19 May 2017 19:41:11 +0000 (19:41 +0000)]
[InstCombine] *Actually* commit the test showing the miscompile.
Clarify a comment while I'm here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303447
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Zachary Turner [Fri, 19 May 2017 19:26:58 +0000 (19:26 +0000)]
Resubmit "[CodeView] Provide a common interface for type collections."
This was originally reverted because it was a breaking a bunch
of bots and the breakage was not surfacing on Windows. After much
head-scratching this was ultimately traced back to a bug in the
lit test runner related to its pipe handling. Now that the bug
in lit is fixed, Windows correctly reports these test failures,
and as such I have finally (hopefully) fixed all of them in this
patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303446
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Davide Italiano [Fri, 19 May 2017 19:23:24 +0000 (19:23 +0000)]
[InstCombine] Add tests to demonstrate the miscompile in PR33078.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303445
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Daniel Berlin [Fri, 19 May 2017 19:01:27 +0000 (19:01 +0000)]
Last of the major pieces to NewGVN - yay!
Summary:
NewGVN: Handle equivalence between phi of ops and op of phis.
This makes our GVN mostly-complete. It would be complete, modulo some
deliberate choices we make. This means it detects roughly all herband
equivalences in polynomial time, including cases notoriously hard for
other GVN's to detect. It also detects a very large swath of the
cases we currently rely on instcombine to detect that involve folding
upwards through phis.
Fixes PR 31125, 31463, PR 31868
Reviewers: davide
Subscribers: Prazek, llvm-commits
Differential Revision: https://reviews.llvm.org/D32151
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303444
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Daniel Berlin [Fri, 19 May 2017 19:01:24 +0000 (19:01 +0000)]
NewGVN: Get rid of most dominating leader check
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303443
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Daniel Berlin [Fri, 19 May 2017 19:01:21 +0000 (19:01 +0000)]
BasicAA: Uninserted instructions have no parent, and notDifferentParent explicitly allows for this case, but getParent crashes when handed one.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303442
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Amaury Sechet [Fri, 19 May 2017 18:20:44 +0000 (18:20 +0000)]
[DAGCombine] (addcarry 0, 0, X) -> (ext/trunc X)
Summary:
While this makes some case better and some case worse - so it's unclear if it is a worthy combine just by itself - this is a useful canonicalisation.
As per discussion in D32756 .
Reviewers: jyknight, nemanjai, mkuper, spatel, RKSimon, zvi, bkramer
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D32916
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303441
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Zachary Turner [Fri, 19 May 2017 18:12:07 +0000 (18:12 +0000)]
[lit] Take the last error when executing pipelines.
This seems to have been present since the beginning of time,
which is quite surprising. The symptom was this: Suppose you
have a test with a run line that looks like this:
RUN: foo | FileCheck %s
foo prints some output and then due to a bug in the program it
asserts. On Windows this results in the program returning a
negative exit code. But if enough output had been printed
already by the tool so that the FileCheck match would succeed
then FileCheck would return 0, and because of bad logic in
lit this 0 return value would overwrite the failed return
value from previous items in the pipeline. This only happened
with negative exit codes.
The most sensible behavior is to just take whatever the first
exit code is. There is no logical ordering defined on exit
codes, so comparing with < and > does not make a lot of sense.
Instead, as soon as we find the first non-successful return
value, that should be the result of the entire expression.
This fixes the issue, as now tests which fail on non-Windows
platforms also fail for me on Windows as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303440
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Anna Thomas [Fri, 19 May 2017 18:00:30 +0000 (18:00 +0000)]
[NFC][loopIdiom] Clang format change rL303434
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303439
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Adrian Prantl [Fri, 19 May 2017 17:55:02 +0000 (17:55 +0000)]
ThinLTO: Verify bitcode before lauching the ThinLTOCodeGenerator.
rdar://problem/
31233625
Differential Revision: https://reviews.llvm.org/D33151
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303438
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Adrian Prantl [Fri, 19 May 2017 17:54:58 +0000 (17:54 +0000)]
Rewrite llvm-lto's codegen() using ThinCodeGenerator::run(). NFC-ish.
Differential Revision: https://reviews.llvm.org/D33360
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303437
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Matthias Braun [Fri, 19 May 2017 17:25:20 +0000 (17:25 +0000)]
Fix typo in test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303436
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Simon Pilgrim [Fri, 19 May 2017 17:19:26 +0000 (17:19 +0000)]
[X86][FMA] Tests showing missed fmsubadd opportunities (PR30633)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303435
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Anna Thomas [Fri, 19 May 2017 17:05:36 +0000 (17:05 +0000)]
[LoopIdiom] Refactor return value of isLegalStore [NFC]
Summary:
This NFC simply refactors the return value of LoopIdiomRecognize::isLegalStore() from bool to an enumeration, and
removes the return-through-parameter mechanism that the function was using. This function is constructed such that it will
only ever recognize a single store idiom (memset, memset_pattern, or memcpy), and never a combination of these. As such it
makes much more sense for the return value to be the single idiom that the store matches, rather than
having a separate argument-return for each idiom -- it's cleaner, and makes it clearer that
only a single idiom can be matched.
Patch by Daniel Neilson!
Reviewers: anna, sanjoy, davide, haicheng
Reviewed By: anna, haicheng
Subscribers: haicheng, mzolotukhin, llvm-commits
Differential Revision: https://reviews.llvm.org/D33359
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303434
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Craig Topper [Fri, 19 May 2017 16:56:53 +0000 (16:56 +0000)]
[InstSimplify] Fix 80 column violation. NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303433
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Craig Topper [Fri, 19 May 2017 16:43:54 +0000 (16:43 +0000)]
[APInt] Add support for dividing or remainder by a uint64_t or int64_t.
Summary:
This patch adds udiv/sdiv/urem/srem/udivrem/sdivrem methods that can divide by a uint64_t. This makes division consistent with all the other arithmetic operations.
This modifies the interface of the divide helper method to work on raw arrays instead of APInts. This way we can pass the uint64_t in for the RHS without wrapping it in an APInt. This required moving all the Quotient and Remainder allocation handling up to the callers. For udiv/urem this was as simple as just creating the Quotient/Remainder with the right size when they were declared. For udivrem we have to rely on reallocate not changing the contents of the variable LHS or RHS is aliased with the Quotient or Remainder APInts. We also have to zero the upper bits of Remainder and Quotient that divide doesn't write to if lhsWords/rhsWords is smaller than the width.
I've update the toString method to use the new udivrem.
Reviewers: hans, dblaikie, RKSimon
Reviewed By: RKSimon
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D33310
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303431
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Dmitry Preobrazhensky [Fri, 19 May 2017 14:27:52 +0000 (14:27 +0000)]
[AMDGPU][MC] Corrected disassembler to decode instructions with 2 literals
See bug 32922: https://bugs.llvm.org//show_bug.cgi?id=32922
Reviewers: artem.tamazov, vpykhtin
Differential Revision: https://reviews.llvm.org/D32912
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303428
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Artur Pilipenko [Fri, 19 May 2017 14:02:46 +0000 (14:02 +0000)]
[LoopPredication] NFC. Extract LoopICmp struct and parseLoopICmp helper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303427
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Artur Pilipenko [Fri, 19 May 2017 14:00:58 +0000 (14:00 +0000)]
[LoopPredication] NFC. Extract LoopPredication::expandCheck helper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303426
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Artur Pilipenko [Fri, 19 May 2017 14:00:04 +0000 (14:00 +0000)]
[LoopPredication] NFC. Extract CanExpand helper lambda
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303425
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Artur Pilipenko [Fri, 19 May 2017 13:59:34 +0000 (13:59 +0000)]
[LoopPredication] NFC. Add an early exit if there is no guards in the loop
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303424
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Dmitry Preobrazhensky [Fri, 19 May 2017 13:36:09 +0000 (13:36 +0000)]
[AMDGPU][MC] Fixed bugs in export instruction
See Bugs 33019, 33056:
https://bugs.llvm.org//show_bug.cgi?id=33019
https://bugs.llvm.org//show_bug.cgi?id=33056
Reviewers: artem.tamazov, vpykhtin
Differential Revision: https://reviews.llvm.org/D33288
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303423
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Guy Blank [Fri, 19 May 2017 12:35:15 +0000 (12:35 +0000)]
[X86][AVX512] Make i1 illegal in the CodeGen
This patch defines the i1 type as illegal in the X86 backend for AVX512.
For DAG operations on <N x i1> types (build vector, extract vector element, ...) i8 is used, and should be truncated/extended.
This should produce better scalar code for i1 types since GPRs will be used instead of mask registers.
Differential Revision: https://reviews.llvm.org/D32273
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303421
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Daniel Sanders [Fri, 19 May 2017 11:08:33 +0000 (11:08 +0000)]
[globalisel][tablegen] Demote OptForSize/OptForMinSize/ForCodeSize to per-function predicates.
Summary:
This causes them to be re-computed more often than necessary but resolves
objections that were raised post-commit on r301750.
Reviewers: qcolombet, ab, t.p.northover, rovka, kristof.beyls
Reviewed By: qcolombet
Subscribers: igorb, llvm-commits
Differential Revision: https://reviews.llvm.org/D32861
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303418
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Amara Emerson [Fri, 19 May 2017 10:40:18 +0000 (10:40 +0000)]
Fix vector pass-through value being unused in IRBuilder::CreateMaskedGather
Also s/0/nullptr in the call site in LV.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303416
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Volkan Keles [Fri, 19 May 2017 09:47:02 +0000 (09:47 +0000)]
[GlobalISel] IRTranslator: Translate ConstantStruct
Reviewers: qcolombet, ab, t.p.northover, aditya_nandakumar, dsanders
Reviewed By: qcolombet
Subscribers: rovka, kristof.beyls, javed.absar, igorb, llvm-commits
Differential Revision: https://reviews.llvm.org/D33317
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303412
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Craig Topper [Fri, 19 May 2017 07:37:25 +0000 (07:37 +0000)]
[APInt] Use b.negate() in place of b = -std::move(b). NFCI
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303411
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Zachary Turner [Fri, 19 May 2017 06:25:09 +0000 (06:25 +0000)]
Fix compilation failure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303410
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Zachary Turner [Fri, 19 May 2017 05:57:45 +0000 (05:57 +0000)]
Revert "[CodeView] Provide a common interface for type collections."
This is a squash of ~5 reverts of, well, pretty much everything
I did today. Something is seriously broken with lit on Windows
right now, and as a result assertions that fire in tests are
triggering failures. I've been breaking non-Windows bots all
day which has seriously confused me because all my tests have
been passing, and after running lit with -a to view the output
even on successful runs, I find out that the tool is crashing
and yet lit is still reporting it as a success!
At this point I don't even know where to start, so rather than
leave the tree broken for who knows how long, I will get this
back to green, and then once lit is fixed on Windows, hopefully
hopefully fix the remaining set of problems for real.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303409
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Zachary Turner [Fri, 19 May 2017 05:18:09 +0000 (05:18 +0000)]
Don't crash if someone tries to visit an empty type stream.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303408
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Zachary Turner [Fri, 19 May 2017 04:56:48 +0000 (04:56 +0000)]
[CodeView] Reduce memory usage in TypeSerializer.
We were using a BumpPtrAllocator to allocate stable storage for
a record, then trying to insert that into a hash table. If a
collision occurred, the bytes were never inserted and the
allocation was unnecessary. At the cost of an extra hash
computation, check first if it exists, and only if it does do
we allocate and insert.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303407
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Davide Italiano [Fri, 19 May 2017 04:06:10 +0000 (04:06 +0000)]
[NewGVN] Delete the old store when we find congruent to a load.
(or non-store, more in general). Fixes PR33086. Caught by the
store verifier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303406
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Zachary Turner [Fri, 19 May 2017 03:04:08 +0000 (03:04 +0000)]
Fix a broken test.
Similar to my previous fix, it turns out llvm-pdbdump has been
printing an incorrect value since the beginning of time, but
we didn't know it was incorrect. Specifically, we were interpreting
a TypeIndex as referencing a type from the TPI stream when it
actually should come from the IPI stream. So we were printing a
string that looked like a valid string, but was just from the
wrong place.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303403
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Adam Nemet [Fri, 19 May 2017 02:56:37 +0000 (02:56 +0000)]
Revert "[ADT] Fix some Clang-tidy modernize-use-using warnings; other minor fixes (NFC)."
This reverts commit r303383.
This breaks the modules-enabled macOS build with:
lib/Support/LockFileManager.cpp:86:7: error: declaration of 'gethostuuid' must be imported from module 'Darwin.POSIX.unistd' before it is required
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303402
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Zachary Turner [Fri, 19 May 2017 00:56:39 +0000 (00:56 +0000)]
Fix crasher in CodeView test.
Apparently this was always broken, but previously we were more
graceful about it and we would print "unknown udt" if we couldn't
find the type index, whereas now we just segfault because we
assume it's valid. But this exposed a real bug, which is that
we weren't looking in the right place. So fix that, and also
fix this crash at the same time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303397
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Matthias Braun [Fri, 19 May 2017 00:18:03 +0000 (00:18 +0000)]
LiveIntervalAnalysis: Fix missing case in pruneSubRegValues()
pruneSubRegValues() needs to remove subregister ranges starting at
instructions that later get removed by eraseInstrs(). It missed to check
one case in which eraseInstrs() would remove an instruction.
Fixes http://llvm.org/PR32688
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303396
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Matthias Braun [Fri, 19 May 2017 00:17:59 +0000 (00:17 +0000)]
Fix typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303395
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Zachary Turner [Thu, 18 May 2017 23:30:51 +0000 (23:30 +0000)]
Fix another warning.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303394
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Davide Italiano [Thu, 18 May 2017 23:22:44 +0000 (23:22 +0000)]
[NewGVN] Break infinite recursion in singleReachablePHIPath().
We can have cycles between PHIs and this causes singleReachablePhi()
to call itself indefintely (until we run out of stack). The proper
solution would be that of computing SCCs, but it's not worth for
now, so just keep a visited set and give up when we find a cycle.
Thanks to Dan for the discussion/help with this.
Fixes PR33014.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303393
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Zachary Turner [Thu, 18 May 2017 23:12:42 +0000 (23:12 +0000)]
Fix some build errors and warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303391
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Zachary Turner [Thu, 18 May 2017 23:04:08 +0000 (23:04 +0000)]
[CodeView] Raise the source to ID map out of the TypeStreamMerger.
This map will be needed to rewrite symbol streams after re-writing
the corresponding type streams.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303390
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Zachary Turner [Thu, 18 May 2017 23:03:41 +0000 (23:03 +0000)]
[llvm-pdbdump] Add the ability to merge PDBs.
Merging PDBs is a feature that will be used heavily by
the linker. The functionality already exists but does not
have deep test coverage because it's not easily exposed through
any tools. This patch aims to address that by adding the
ability to merge PDBs via llvm-pdbdump. It takes arbitrarily
many PDBs and outputs a single PDB.
Using this new functionality, a test is added for merging
type records. Future patches will add the ability to merge
symbol records, module information, etc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303389
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Zachary Turner [Thu, 18 May 2017 23:03:06 +0000 (23:03 +0000)]
[CodeView] Provide a common interface for type collections.
Right now we have multiple notions of things that represent collections of
types. Most commonly used are TypeDatabase, which is supposed to keep
mappings from TypeIndex to type name when reading a type stream, which
happens when reading PDBs. And also TypeTableBuilder, which is used to
build up a collection of types dynamically which we will later serialize
(i.e. when writing PDBs).
But often you just want to do some operation on a collection of types, and
you may want to do the same operation on any kind of collection. For
example, you might want to merge two TypeTableBuilders or you might want
to merge two type streams that you loaded from various files.
This dichotomy between reading and writing is responsible for a lot of the
existing code duplication and overlapping responsibilities in the existing
CodeView library classes. For example, after building up a
TypeTableBuilder with a bunch of type records, if we want to dump it we
have to re-invent a bunch of extra glue because our dumper takes a
TypeDatabase or a CVTypeArray, which are both incompatible with
TypeTableBuilder.
This patch introduces an abstract base class called TypeCollection which
is shared between the various type collection like things. Wherever we
previously stored a TypeDatabase& in some common class, we now store a
TypeCollection&.
The advantage of this is that all the details of how the collection are
implemented, such as lazy deserialization of partial type streams, is
completely transparent and you can just treat any collection of types the
same regardless of where it came from.
Differential Revision: https://reviews.llvm.org/D33293
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303388
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Sanjay Patel [Thu, 18 May 2017 22:47:57 +0000 (22:47 +0000)]
[InstCombine] add more tests for xor-of-icmps; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303387
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Davide Italiano [Thu, 18 May 2017 21:43:23 +0000 (21:43 +0000)]
[NewGVN] Replace predicate info leftovers.
This time with an additional fix, i.e. we remove the dead
@llvm.ssa.copy instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303385
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Eugene Zelenko [Thu, 18 May 2017 21:27:11 +0000 (21:27 +0000)]
[ADT] Fix some Clang-tidy modernize-use-using warnings; other minor fixes (NFC).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303383
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Sanjay Patel [Thu, 18 May 2017 20:53:16 +0000 (20:53 +0000)]
[InstCombine] add helper to foldXorOfICmps(); NFCI
Also, fix the old-style capitalization of the related functions
and move them to the 'private' section of the class since they
are just helpers of the visit* functions.
As shown in the post-commit comments for D32143, we are missing
folds for xor-of-icmps.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303381
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Craig Topper [Thu, 18 May 2017 20:27:32 +0000 (20:27 +0000)]
[InstSimplify] Make m_Not work for xor -1, X
Currently m_Not only works the canonical xor X, -1 form that InstCombine produces. InstSimplify can't rely on this canonicalization.
Differential Revision: https://reviews.llvm.org/D33331
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303379
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Rui Ueyama [Thu, 18 May 2017 20:18:24 +0000 (20:18 +0000)]
Revert r303375 "LLVM_FALLTHROUGH instead of fall-through comment."
This reverts commit r303375 since it didn't compile.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303377
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Galina Kistanova [Thu, 18 May 2017 20:01:52 +0000 (20:01 +0000)]
LLVM_FALLTHROUGH instead of fall-through comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303375
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Hans Wennborg [Thu, 18 May 2017 18:50:05 +0000 (18:50 +0000)]
Revert r302938 "Add LiveRangeShrink pass to shrink live range within BB."
This also reverts follow-ups r303292 and r303298.
It broke some Chromium tests under MSan, and apparently also internal
tests at Google.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303369
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Rafael Espindola [Thu, 18 May 2017 18:24:11 +0000 (18:24 +0000)]
Use existing helper. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303368
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Craig Topper [Thu, 18 May 2017 18:14:40 +0000 (18:14 +0000)]
[InstSimplify] Add test cases for missing fold (A & B) | ~(A ^ B) -> ~(A ^ B).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303367
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Galina Kistanova [Thu, 18 May 2017 17:53:47 +0000 (17:53 +0000)]
Reduce gcc-7 warnings by fall-through comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303365
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Sanjay Patel [Thu, 18 May 2017 17:48:07 +0000 (17:48 +0000)]
[InstCombine] move test and use better checks; NFC
Previously, this test was checking for 'or i1', but that was actually matched by 'xor i1'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303364
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Reid Kleckner [Thu, 18 May 2017 17:24:10 +0000 (17:24 +0000)]
[IR] De-virtualize ~Value to save a vptr
Summary:
Implements PR889
Removing the virtual table pointer from Value saves 1% of RSS when doing
LTO of llc on Linux. The impact on time was positive, but too noisy to
conclusively say that performance improved. Here is a link to the
spreadsheet with the original data:
https://docs.google.com/spreadsheets/d/1F4FHir0qYnV0MEp2sYYp_BuvnJgWlWPhWOwZ6LbW7W4/edit?usp=sharing
This change makes it invalid to directly delete a Value, User, or
Instruction pointer. Instead, such code can be rewritten to a null check
and a call Value::deleteValue(). Value objects tend to have their
lifetimes managed through iplist, so for the most part, this isn't a big
deal. However, there are some places where LLVM deletes values, and
those places had to be migrated to deleteValue. I have also created
llvm::unique_value, which has a custom deleter, so it can be used in
place of std::unique_ptr<Value>.
I had to add the "DerivedUser" Deleter escape hatch for MemorySSA, which
derives from User outside of lib/IR. Code in IR cannot include MemorySSA
headers or call the MemoryAccess object destructors without introducing
a circular dependency, so we need some level of indirection.
Unfortunately, no class derived from User may have any virtual methods,
because adding a virtual method would break User::getHungOffOperands(),
which assumes that it can find the use list immediately prior to the
User object. I've added a static_assert to the appropriate OperandTraits
templates to help people avoid this trap.
Reviewers: chandlerc, mehdi_amini, pete, dberlin, george.burgess.iv
Reviewed By: chandlerc
Subscribers: krytarowski, eraman, george.burgess.iv, mzolotukhin, Prazek, nlewycky, hans, inglorion, pcc, tejohnson, dberlin, llvm-commits
Differential Revision: https://reviews.llvm.org/D31261
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303362
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Wei Mi [Thu, 18 May 2017 17:21:22 +0000 (17:21 +0000)]
[LSR] Call canonicalize after we generate a new Formula in GenerateTruncates. Fix PR33077.
The testcase in PR33077 generates a LSR Use Formula with two SCEVAddRecExprs for the same
loop. Such uncommon formula will become non-canonical after GenerateTruncates adds sign
extension to the ScaledReg of the Formula, and it will break the assertion that every
Formula to be inserted is canonical.
The fix is to call canonicalize for the raw Formula generated by GenerateTruncates
before inserting it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303361
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Francis Visoiu Mistrih [Thu, 18 May 2017 17:21:13 +0000 (17:21 +0000)]
[LegacyPassManager] Remove TargetMachine constructors
This provides a new way to access the TargetMachine through
TargetPassConfig, as a dependency.
The patterns replaced here are:
* Passes handling a null TargetMachine call
`getAnalysisIfAvailable<TargetPassConfig>`.
* Passes not handling a null TargetMachine
`addRequired<TargetPassConfig>` and call
`getAnalysis<TargetPassConfig>`.
* MachineFunctionPasses now use MF.getTarget().
* Remove all the TargetMachine constructors.
* Remove INITIALIZE_TM_PASS.
This fixes a crash when running `llc -start-before prologepilog`.
PEI needs StackProtector, which gets constructed without a TargetMachine
by the pass manager. The StackProtector pass doesn't handle the case
where there is no TargetMachine, so it segfaults.
Related to PR30324.
Differential Revision: https://reviews.llvm.org/D33222
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303360
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Reid Kleckner [Thu, 18 May 2017 17:17:17 +0000 (17:17 +0000)]
[git-llvm] Don't attempt to propget files that don't exist yet in SVN
svn propget will fail halfway through, and the patch will fail to apply.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303359
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Zachary Turner [Thu, 18 May 2017 15:14:44 +0000 (15:14 +0000)]
Fix some minor issues in PDB parsing library.
1) Until now I'd never seen a valid PDB where the DBI stream and
the PDB Stream disagreed on the "Age" field. Because of that,
we had code to assert that they matched. Recently though I was
given a PDB where they disagreed, so this assumption has proven
to be incorrect. Remove this check.
2) We were walking the entire list of hash values for types up front
and then throwing away the values. For large PDBs this was a
significant slow down. Remove this.
With this patch, I can dump the list of all compilands from a
1.5GB PDB file in just a few seconds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303351
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Anna Thomas [Thu, 18 May 2017 13:12:18 +0000 (13:12 +0000)]
[JumpThreading] Dont RAUW condition incorrectly
Summary:
We have a bug when RAUWing the condition if experimental.guard or assumes is a use of that
condition. This is because LazyValueInfo may have used the guards/assumes to identify the
value of the condition at the end of the block. RAUW replaces the uses
at the guard/assume as well as uses before the guard/assume. Both of
these are incorrect.
For now, disable RAUW for conditions and fix the logic as a next
step: https://reviews.llvm.org/D33257
Reviewers: sanjoy, reames, trentxintong
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D33279
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303349
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Sam Kolton [Thu, 18 May 2017 12:12:03 +0000 (12:12 +0000)]
[AMDGPU] SDWA operands should not intersect with potential MIs
Summary:
There should be no intesection between SDWA operands and potential MIs. E.g.:
```
v_and_b32 v0, 0xff, v1 -> src:v1 sel:BYTE_0
v_and_b32 v2, 0xff, v0 -> src:v0 sel:BYTE_0
v_add_u32 v3, v4, v2
```
In that example it is possible that we would fold 2nd instruction into 3rd (v_add_u32_sdwa) and then try to fold 1st instruction into 2nd (that was already destroyed). So if SDWAOperand is also a potential MI then do not apply it.
Reviewers: vpykhtin, arsenm
Subscribers: kzhuravl, wdng, nhaehnle, yaxunl, dstuttard, tpr, t-tye
Differential Revision: https://reviews.llvm.org/D32804
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303347
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Guy Blank [Thu, 18 May 2017 11:29:41 +0000 (11:29 +0000)]
[MVT] add v1i1 MVT
Adds the v1i1 MVT as a preparation for another commit (https://reviews.llvm.org/D32273)
Differential Revision: https://reviews.llvm.org/D32540
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303346
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Igor Breger [Thu, 18 May 2017 11:10:56 +0000 (11:10 +0000)]
[GlobalISel][X86] G_ADD/G_SUB vector legalizer/selector support.
Summary: G_ADD/G_SUB vector legalizer/selector support.
Reviewers: zvi, guyblank
Reviewed By: guyblank
Subscribers: rovka, llvm-commits, kristof.beyls
Differential Revision: https://reviews.llvm.org/D33232
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303345
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Simon Pilgrim [Thu, 18 May 2017 10:42:34 +0000 (10:42 +0000)]
[X86][AVX512] Add 512-bit vector ctpop costs + tests
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303342
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Daniel Sanders [Thu, 18 May 2017 10:33:36 +0000 (10:33 +0000)]
Re-commit: [globalisel][tablegen] Import rules containing intrinsic_wo_chain.
Summary:
As of this patch, 1018 out of 3938 rules are currently imported.
Depends on D32275
Reviewers: qcolombet, kristof.beyls, rovka, t.p.northover, ab, aditya_nandakumar
Reviewed By: qcolombet
Subscribers: dberris, igorb, llvm-commits
Differential Revision: https://reviews.llvm.org/D32278
The previous commit failed on test-suite/Bitcode/simd_ops/AArch64_halide_runtime.bc
because isImmOperandEqual() assumed MO was a register operand and that's not
always true.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303341
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Zvi Rackover [Thu, 18 May 2017 09:32:56 +0000 (09:32 +0000)]
[X86] Add explicit triple to test invocation
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303340
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