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Benjamin Kramer [Wed, 20 Jul 2016 11:40:16 +0000 (11:40 +0000)]
Revert "[InstCombine] Enable cast-folding in logic(cast(icmp), cast(icmp))"
Makes InstCombine infloop when compiling v8.
This reverts commit r275989 and r276105.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276106
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Tobias Grosser [Wed, 20 Jul 2016 11:24:27 +0000 (11:24 +0000)]
[InstCombine] Provide more test cases for cast-folding [NFC]
Summary: In r275989 we enabled the folding of `logic(cast(icmp), cast(icmp))` to `cast(logic(icmp, icmp))`. Here we add more test cases to assure this folding works for all logical operations `and`/`or`/`xor`.
Reviewers: grosser
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D22561
Contributed-by: Matthias Reisinger
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276105
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Simon Pilgrim [Wed, 20 Jul 2016 10:41:28 +0000 (10:41 +0000)]
[X86][SSE] Add cost model values for CTPOP of vectors
This patch adds costs for the vectorized implementations of CTPOP, the default values were seriously underestimating the cost of these and was encouraging vectorization on targets where serialized use of POPCNT would be much better.
Differential Revision: https://reviews.llvm.org/D22456
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276104
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Diana Picus [Wed, 20 Jul 2016 09:48:24 +0000 (09:48 +0000)]
[ARM] Skip inline asm memory operands in DAGToDAGISel
Retry r275776 (no changes, we suspect the issue was with another commit).
The current logic for handling inline asm operands in DAGToDAGISel interprets
the operands by looking for constants, which should represent the flags
describing the kind of operand we're dealing with (immediate, memory, register
def etc). The operands representing actual data are skipped only if they are
non-const, with the exception of immediate operands which are skipped explicitly
when a flag describing an immediate is found.
The oversight is that memory operands may be const too (e.g. for device drivers
reading a fixed address), so we should explicitly skip the operand following a
flag describing a memory operand. If we don't, we risk interpreting that
constant as a flag, which is definitely not intended.
Fixes PR26038
Differential Revision: https://reviews.llvm.org/D22103
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276101
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Renato Golin [Wed, 20 Jul 2016 09:47:09 +0000 (09:47 +0000)]
[docs] fix cmake code-block warning
This will unblock the llvm-sphinx-buildbot, which is currently failing due
to a warning being treated as error.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276100
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Renato Golin [Wed, 20 Jul 2016 09:38:04 +0000 (09:38 +0000)]
[docs] Add proposals to index file
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276099
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Renato Golin [Wed, 20 Jul 2016 09:09:58 +0000 (09:09 +0000)]
[docs] GitHub Proposal for LLVM
This document was crafted from the various (320+) emails between 2nd June and
20th July regarding the move to GitHub. It tried to consolidate every issue that
was raised and every solution that was presented to have a GitHub repository
with sub-modules.
It *does not* try to argue whether sub-modules are better or worse than any other
Git solution, nor if Git is better than any other VCS, nor if GitHub is better
than any other free code hosting service. This is just the final conclusions of
48 days and 320 emails (plus a lot of IRC discussions) on the LLVM community.
This document will be presented at the survey that the foundation will setup for
us to decide if we move to this solution or not. It reflects what was discussed
on the lists, but it's not authoritative. If something is not clear enough,
please refer to the mailing list discussions (hint: search for "GitHub").
Review: https://reviews.llvm.org/D22463
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276097
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Craig Topper [Wed, 20 Jul 2016 05:05:50 +0000 (05:05 +0000)]
[AVX512] Add a missing NoVLX to give priority to the AVX512 version of the pattern.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276088
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Craig Topper [Wed, 20 Jul 2016 05:05:48 +0000 (05:05 +0000)]
[X86] Use 'HasAVX1Only' to properly give priority to the AVX2 version without relying on file ordering.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276087
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Craig Topper [Wed, 20 Jul 2016 05:05:46 +0000 (05:05 +0000)]
[X86] Create some multiclasses to reduce the repeated patterns for VEXTRACT(F/I)128/VINSERT(I/F)128. NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276086
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Craig Topper [Wed, 20 Jul 2016 05:05:44 +0000 (05:05 +0000)]
[X86] Create some wrapper multiclasses to create AVX and SSE shift instructions with less repeated code. NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276085
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David Majnemer [Wed, 20 Jul 2016 04:13:05 +0000 (04:13 +0000)]
Forgot to add a test for r276008.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276082
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David Majnemer [Wed, 20 Jul 2016 04:13:01 +0000 (04:13 +0000)]
Revert "Disable this-return argument forwarding on ARM/AArch64"
Inference of the 'returned' attribute was fixed in r276008, lets try
turning the backend support back on.
This reverts commit r275677.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276081
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Adam Nemet [Wed, 20 Jul 2016 04:03:43 +0000 (04:03 +0000)]
[LV] Add hotness attribute to missed-optimization remarks
The new OptimizationRemarkEmitter analysis pass is hooked up to both new
and old PM passes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276080
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Michael Zolotukhin [Wed, 20 Jul 2016 01:55:27 +0000 (01:55 +0000)]
Revert "Revert r275883 and r275891. They seem to cause PR28608."
This reverts commit r276064, and thus reapplies r275891 and r275883 with
a fix for PR28608.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276077
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Saleem Abdulrasool [Wed, 20 Jul 2016 01:16:28 +0000 (01:16 +0000)]
llvm-readobj: add some more aliases
Alias -d and -t from readelf in llvm-readobj which effectively replaces the
tool.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276075
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Justin Lebar [Wed, 20 Jul 2016 00:55:12 +0000 (00:55 +0000)]
[LSV] Don't assume that loads/stores appear in address order in the BB.
Summary:
getVectorizablePrefix previously didn't work properly in the face of
aliasing loads/stores. It unwittingly assumed that the loads/stores
appeared in the BB in address order. If they didn't, it would do the
wrong thing.
Reviewers: asbirlea, tstellarAMD
Subscribers: arsenm, llvm-commits, mzolotukhin
Differential Revision: https://reviews.llvm.org/D22535
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276072
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Yunzhong Gao [Wed, 20 Jul 2016 00:40:54 +0000 (00:40 +0000)]
Fixing a few places in this doc which look like obvious typos.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276070
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Matthias Braun [Wed, 20 Jul 2016 00:21:32 +0000 (00:21 +0000)]
Revert "RegScavenging: Add scavengeRegisterBackwards()"
Reverting this commit for now as it seems to be causing failures on
test-suite tests on the clang-ppc64le-linux-lnt bot.
This reverts commit r276044.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276068
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Kyle Butt [Wed, 20 Jul 2016 00:01:51 +0000 (00:01 +0000)]
Codegen: Tail Duplication: Only duplicate into layout pred if it is a CFG Pred.
Add a check that the layout predecessor of a block is an actual CFG
predecssor of the block as well. No current code fails this check, but
upcoming patches can trigger this, and it makes sense to separate it
out.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276066
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Sean Silva [Tue, 19 Jul 2016 23:54:29 +0000 (23:54 +0000)]
Revert r275883 and r275891. They seem to cause PR28608.
Revert "[LoopSimplify] Update LCSSA after separating nested loops."
This reverts commit r275891.
Revert "[LCSSA] Post-process PHI-nodes created by SSAUpdate when constructing LCSSA form."
This reverts commit r275883.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276064
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Sean Silva [Tue, 19 Jul 2016 23:54:23 +0000 (23:54 +0000)]
[PM] Port LoopUnroll.
We just set PreserveLCSSA to always true since we don't have an
analogous method `mustPreserveAnalysisID(LCSSA)`.
Also port LoopInfo verifier pass to test LoopUnrollPass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276063
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Kyle Butt [Tue, 19 Jul 2016 23:54:21 +0000 (23:54 +0000)]
Codegen: Factor out canTailDuplicate
canTailDuplicate accepts two blocks and returns true if the first can be
duplicated into the second successfully. Use this function to
encapsulate the heuristic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276062
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Aaron Ballman [Tue, 19 Jul 2016 23:50:11 +0000 (23:50 +0000)]
This code block breaks the docs build (lab.llvm.org:8011/builders/llvm-sphinx-docs/builds/11925/steps/docs-llvm-html/logs/stdio). Setting the code highlighting to none instead of llvm.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276060
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Justin Lebar [Tue, 19 Jul 2016 23:19:25 +0000 (23:19 +0000)]
[ADT] Warn on unused results from ArrayRef and StringRef functions that read like they might mutate.
Summary:
Functions like "slice" and "drop_front" sound like they might mutate the
underlying object, but they don't. Warning on unused results would have
saved me an hour yesterday, and I'm sure I'm not the only one.
LLVM and Clang are clean wrt this warning after D22540.
Reviewers: majnemer
Subscribers: sanjoy, chandlerc, llvm-commits
Differential Revision: https://reviews.llvm.org/D22541
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276058
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Justin Lebar [Tue, 19 Jul 2016 23:19:22 +0000 (23:19 +0000)]
Get rid of call to StringRef::substr that's never used.
Summary: substr doesn't modify the string, so this line has no effect.
Reviewers: majnemer
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D22540
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276057
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Justin Lebar [Tue, 19 Jul 2016 23:19:20 +0000 (23:19 +0000)]
[LSV] Insert stores at the right point.
Summary:
Previously, the insertion point for stores was the last instruction in
Chain *before calling getVectorizablePrefixEndIdx*. Thus if
getVectorizablePrefixEndIdx didn't return Chain.size(), we still would
insert at the last instruction in Chain.
This patch changes our internal API a bit in an attempt to make it less
prone to this sort of error. As a result, we end up recalculating the
Chain's boundary instructions, but I think worrying about the speed hit
of this is a premature optimization right now.
Reviewers: asbirlea, tstellarAMD
Subscribers: mzolotukhin, arsenm, llvm-commits
Differential Revision: https://reviews.llvm.org/D22534
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276056
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Justin Lebar [Tue, 19 Jul 2016 23:19:18 +0000 (23:19 +0000)]
[LSV] Use make_range, and reformat a DEBUG message. NFC
Summary:
The DEBUG message was hard to read because two Values were being printed
on the same line with only the delimiter "aliases". This change makes
us print each Value on its own line.
Reviewers: asbirlea
Subscribers: llvm-commits, arsenm, mzolotukhin
Differential Revision: https://reviews.llvm.org/D22533
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276055
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Justin Lebar [Tue, 19 Jul 2016 23:19:16 +0000 (23:19 +0000)]
[LSV] Nix two global (ish) variables in the LoadStoreVectorizer. NFC
Reviewers: asbirlea
Subscribers: mzolotukhin, llvm-commits, arsenm
Differential Revision: https://reviews.llvm.org/D22532
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276054
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Justin Lebar [Tue, 19 Jul 2016 23:18:59 +0000 (23:18 +0000)]
[LSV] Add detail to correct-order.ll test.
Summary:
This helps keep us honest -- there were a number of ways we could screw
up and still have passed this test.
Reviewers: asbirlea
Subscribers: llvm-commits, arsenm
Differential Revision: https://reviews.llvm.org/D22531
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276053
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Kostya Serebryany [Tue, 19 Jul 2016 23:18:28 +0000 (23:18 +0000)]
[libFuzzer] extend the messages printed by afl_driver
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276052
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Matt Arsenault [Tue, 19 Jul 2016 23:16:53 +0000 (23:16 +0000)]
AMDGPU: Change fdiv lowering based on !fpmath metadata
If 2.5 ulp is acceptable, denormals are not required, and
isn't a reciprocal which will already be handled, replace
with a faster fdiv.
Simplify the lowering tests by using per function
subtarget features.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276051
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Daniel Berlin [Tue, 19 Jul 2016 23:08:08 +0000 (23:08 +0000)]
Fix unused variable
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276050
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Paul Robinson [Tue, 19 Jul 2016 22:57:14 +0000 (22:57 +0000)]
Make GVN Hoisting obey optnone/bisect.
Differential Revision: http://reviews.llvm.org/D22545
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276048
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Daniel Berlin [Tue, 19 Jul 2016 22:49:43 +0000 (22:49 +0000)]
Make MemorySSA::dominates/locallydominates constant time
Summary: Make MemorySSA::dominates/locallydominates constant time
Reviewers: george.burgess.iv, gberry
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D22527
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276046
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Chandler Carruth [Tue, 19 Jul 2016 22:46:39 +0000 (22:46 +0000)]
Add AIX support to Path.inc, Host.h, and CMake.
Patch by Andrew Paprocki!
Differential Revision: https://reviews.llvm.org/D18359
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276045
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Matthias Braun [Tue, 19 Jul 2016 22:37:09 +0000 (22:37 +0000)]
RegScavenging: Add scavengeRegisterBackwards()
This is a variant of scavengeRegister() that works for
enterBasicBlockEnd()/backward(). The benefit of the backward mode is
that it is not affected by incomplete kill flags.
This patch also changes
PrologEpilogInserter::doScavengeFrameVirtualRegs() to use the register
scavenger in backwards mode.
Differential Revision: http://reviews.llvm.org/D21885
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276044
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Matthias Braun [Tue, 19 Jul 2016 22:37:02 +0000 (22:37 +0000)]
RegisterScavenger: Introduce backward() mode.
This adds two pieces:
- RegisterScavenger:::enterBasicBlockEnd() which behaves similar to
enterBasicBlock() but starts tracking at the end of the basic block.
- A RegisterScavenger::backward() method. It is subtly different
from the existing unprocess() method which only considers uses with
the kill flag set: If a value is dead at the end of a basic block with
a last use inside the basic block, unprocess() will fail to mark it as
live. However we cannot change/fix this behaviour because unprocess()
needs to perform the exact reverse operation of forward().
Differential Revision: http://reviews.llvm.org/D21873
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276043
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Sanjay Patel [Tue, 19 Jul 2016 22:32:15 +0000 (22:32 +0000)]
regenerate checks
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276042
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Evandro Menezes [Tue, 19 Jul 2016 22:31:11 +0000 (22:31 +0000)]
[AArch64] Properly validate the reciprocal estimation.
Add check for legal data types when expanding into a Newton series.
Differential Revision: https://reviews.llvm.org/D22267
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276041
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Sanjay Patel [Tue, 19 Jul 2016 22:09:34 +0000 (22:09 +0000)]
[InstCombine] fold add(zext(xor X, C), C) --> sext X when C is INT_MIN in the source type
The pattern may look more obviously like a sext if written as:
define i32 @g(i16 %x) {
%zext = zext i16 %x to i32
%xor = xor i32 %zext, 32768
%add = add i32 %xor, -32768
ret i32 %add
}
We already have that fold in visitAdd().
Differential Revision: https://reviews.llvm.org/D22477
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276035
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George Burgess IV [Tue, 19 Jul 2016 21:35:47 +0000 (21:35 +0000)]
Attempt to appease MSVC buildbots.
Broken by r276026.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276032
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Davide Italiano [Tue, 19 Jul 2016 21:16:30 +0000 (21:16 +0000)]
[AMDGPU] Remove spurious line (should've been removed in r276029).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276030
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Davide Italiano [Tue, 19 Jul 2016 21:10:49 +0000 (21:10 +0000)]
[AMDGPU] Remove dead code.
LGTM'd by Matt Arsenault.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276029
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George Burgess IV [Tue, 19 Jul 2016 20:56:41 +0000 (20:56 +0000)]
[CFLAA] Make a test tell the truth. NFC.
Dishonesty noted by Jia Chen.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276028
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George Burgess IV [Tue, 19 Jul 2016 20:47:15 +0000 (20:47 +0000)]
[CFLAA] Add some interproc. analysis to CFLAnders.
This patch adds function summary support to CFLAnders. It also comes
with a lot of tests! Woohoo!
Patch by Jia Chen.
Differential Revision: https://reviews.llvm.org/D22450
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276026
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Kevin Enderby [Tue, 19 Jul 2016 20:47:07 +0000 (20:47 +0000)]
Next step along the way to getting good error messages for bad archives.
This step builds on Lang Hames work to change Archive::child_iterator
for better interoperation with Error/Expected. Building on that it is now
possible to return an error message when the size field of an archive
contains non-decimal characters.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276025
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Sanjay Patel [Tue, 19 Jul 2016 20:47:00 +0000 (20:47 +0000)]
add even more missing tests for simplifySelectBitTest()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276024
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George Burgess IV [Tue, 19 Jul 2016 20:38:21 +0000 (20:38 +0000)]
[CFLAA] Teach CFLAnders to distinguish reads from writes.
This patch adds more specific edges to CFLAndersAliasAnalysis. The goal
of these edges is to give us more information about *how* two values
that MayAlias alias. With this, we can now tell cases like
a = b; // ergo, a may alias b
apart from
a = c;
b = c;
// so, a may alias b, but only because they were both assigned to c.
...And others.
Patch by Jia Chen.
Differential Revision: https://reviews.llvm.org/D22429
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276023
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Aaron Ballman [Tue, 19 Jul 2016 20:20:03 +0000 (20:20 +0000)]
This code block breaks the docs build (lab.llvm.org:8011/builders/llvm-sphinx-docs/builds/11921/steps/docs-llvm-html/logs/stdio). Setting the code highlighting to none instead of llvm to hopefully get the bot stumbling back towards green.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276018
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Rafael Espindola [Tue, 19 Jul 2016 20:19:56 +0000 (20:19 +0000)]
Use posix_fallocate instead of ftruncate.
This makes sure that space is actually available. With this change
running lld on a full file system causes it to exit with
failed to open foo: No space left on device
instead of crashing with a sigbus.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276017
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Vedant Kumar [Tue, 19 Jul 2016 20:16:08 +0000 (20:16 +0000)]
[tsan] Don't instrument __llvm_gcov_global_state_pred or __llvm_gcda*
r274801 did not go far enough to allow gcov+tsan to cooperate. With this
commit it's possible to run the following code without false positives:
std::thread T1(fib), T2(fib);
T1.join(); T2.join();
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276015
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Tim Northover [Tue, 19 Jul 2016 19:49:13 +0000 (19:49 +0000)]
ARM: move feature for Thumb2 pkhbt/pkhtb onto architectures.
There's not much functional change, but it really is an architectural feature
(on v6T2, v7A, v7R and v7EM) rather than something each CPU implements
individually.
The main functional change is the default behaviour you get when specifying
only "-triple".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276013
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Ahmed Bougacha [Tue, 19 Jul 2016 19:48:36 +0000 (19:48 +0000)]
[GlobalISel] Mark newly-created gvregs as having a bank.
Also verify that we never try to set the size of a vreg associated
to a register class.
Report an error when we encounter that in MIR. Fix a testcase that
hit that error and had a size for no reason.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276012
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Ahmed Bougacha [Tue, 19 Jul 2016 19:47:06 +0000 (19:47 +0000)]
[GlobalISel] Simplify more RegClassOrRegBank is+get. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276011
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David Majnemer [Tue, 19 Jul 2016 18:50:26 +0000 (18:50 +0000)]
[FunctionAttrs] Correct the safety analysis for inference of 'returned'
We skipped over ReturnInsts which didn't return an argument which would
lead us to incorrectly conclude that an argument returned by another
ReturnInst was 'returned'.
This reverts commit r275756.
This fixes PR28610.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276008
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Davide Italiano [Tue, 19 Jul 2016 18:31:07 +0000 (18:31 +0000)]
[SCCP] Improve assert messages. NFCI.
I've been hitting those already while working on SCCP and I think
it's be useful to provide a more explanatory diagnostic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276007
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Kostya Serebryany [Tue, 19 Jul 2016 18:29:06 +0000 (18:29 +0000)]
[libFuzzer] properly intercept memmem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276006
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Chad Rosier [Tue, 19 Jul 2016 18:11:11 +0000 (18:11 +0000)]
[DSE] Add additional debug output. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276005
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David Majnemer [Tue, 19 Jul 2016 17:52:41 +0000 (17:52 +0000)]
Add a testcase for r275581
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276002
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David Majnemer [Tue, 19 Jul 2016 17:50:30 +0000 (17:50 +0000)]
[RegionInfo] Some cleanups
- Use unique_ptr instead of managing a container of new'd pointers.
- Use range based for loops.
No functional change is intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276001
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David Majnemer [Tue, 19 Jul 2016 17:50:27 +0000 (17:50 +0000)]
[RegionPass] Some minor cleanups
No functional change is intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276000
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David Majnemer [Tue, 19 Jul 2016 17:50:24 +0000 (17:50 +0000)]
[LoopPass] Some minor cleanups
No functional change is intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275999
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Aaron Ballman [Tue, 19 Jul 2016 17:46:55 +0000 (17:46 +0000)]
This code block breaks the docs build (lab.llvm.org:8011/builders/llvm-sphinx-docs/builds/11920/steps/docs-llvm-html/logs/stdio), but I cannot see anything immediately wrong with it and cannot reproduce the diagnostic locally. Setting the code highlighting to none instead of nasm to hopefully get the bot stumbling back towards green.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275998
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Sanjay Patel [Tue, 19 Jul 2016 17:07:35 +0000 (17:07 +0000)]
add tests related to PR28466
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275995
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Simon Pilgrim [Tue, 19 Jul 2016 17:04:28 +0000 (17:04 +0000)]
[X86][AVX512] Added AVX512 subvector broadcast tests
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275994
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Simon Pilgrim [Tue, 19 Jul 2016 16:52:05 +0000 (16:52 +0000)]
[X86][AVX] Fixed typo in test names
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275992
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Chad Rosier [Tue, 19 Jul 2016 16:50:57 +0000 (16:50 +0000)]
[DSE] Add additional debug output. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275991
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Sanjay Patel [Tue, 19 Jul 2016 16:49:55 +0000 (16:49 +0000)]
add missing test for simplifySelectBitTest()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275990
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Tobias Grosser [Tue, 19 Jul 2016 16:39:17 +0000 (16:39 +0000)]
[InstCombine] Enable cast-folding in logic(cast(icmp), cast(icmp))
Summary:
Currently, InstCombine is already able to fold expressions of the form `logic(cast(A), cast(B))` to the simpler form `cast(logic(A, B))`, where logic designates one of `and`/`or`/`xor`. This transformation is implemented in `foldCastedBitwiseLogic()` in InstCombineAndOrXor.cpp. However, this optimization will not be performed if both `A` and `B` are `icmp` instructions. The decision to preclude casts of `icmp` instructions originates in r48715 in combination with r261707, and can be best understood by the title of the former one:
> Transform (zext (or (icmp), (icmp))) to (or (zext (cimp), (zext icmp))) if at least one of the (zext icmp) can be transformed to eliminate an icmp.
Apparently, it introduced a transformation that is a reverse of the transformation that is done in `foldCastedBitwiseLogic()`. Its purpose is to expose pairs of `zext icmp` that would subsequently be optimized by `transformZExtICmp()` in InstCombineCasts.cpp. Therefore, in order to avoid an endless loop of switching back and forth between these two transformations, the one in `foldCastedBitwiseLogic()` has been restricted to exclude `icmp` instructions which is mirrored in the responsible check:
`if ((!isa<ICmpInst>(Cast0Src) || !isa<ICmpInst>(Cast1Src)) && ...`
This check seems to sort out more cases than necessary because:
- the reverse transformation is obviously done for `or` instructions only
- and also not every `zext icmp` pair is necessarily the result of this reverse transformation
Therefore we now remove this check and replace it by a more finegrained one in `shouldOptimizeCast()` that now rejects only those `logic(zext(icmp), zext(icmp))` that would be able to be optimized by `transformZExtICmp()`, which also avoids the mentioned endless loop. That means we are now able to also simplify expressions of the form `logic(cast(icmp), cast(icmp))` to `cast(logic(icmp, icmp))` (`cast` being an arbitrary `CastInst`).
As an example, consider the following IR snippet
```
%1 = icmp sgt i64 %a, %b
%2 = zext i1 %1 to i8
%3 = icmp slt i64 %a, %c
%4 = zext i1 %3 to i8
%5 = and i8 %2, %4
```
which would now be transformed to
```
%1 = icmp sgt i64 %a, %b
%2 = icmp slt i64 %a, %c
%3 = and i1 %1, %2
%4 = zext i1 %3 to i8
```
This issue became apparent when experimenting with the programming language Julia, which makes use of LLVM. Currently, Julia lowers its `Bool` datatype to LLVM's `i8` (also see https://github.com/JuliaLang/julia/pull/17225). In fact, the above IR example is the lowered form of the Julia snippet `(a > b) & (a < c)`. Like shown above, this may introduce `zext` operations, casting between `i1` and `i8`, which could for example hinder ScalarEvolution and Polly on certain code.
Reviewers: grosser, vtjnash, majnemer
Subscribers: majnemer, llvm-commits
Differential Revision: https://reviews.llvm.org/D22511
Contributed-by: Matthias Reisinger
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275989
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Matt Arsenault [Tue, 19 Jul 2016 16:27:56 +0000 (16:27 +0000)]
AMDGPU: Only use legal inline immediates with kill pseudo
Only if the value is negative or positive is what matters,
so use a constant that doesn't require an instruction to
materialize.
These should really just emit the write exec directly,
but for stick with the kill pseudo-terminator.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275988
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Simon Pilgrim [Tue, 19 Jul 2016 15:07:43 +0000 (15:07 +0000)]
[X86][SSE] Reimplement SSE fp2si conversion intrinsics instead of using generic IR
D20859 and D20860 attempted to replace the SSE (V)CVTTPS2DQ and VCVTTPD2DQ truncating conversions with generic IR instead.
It turns out that the behaviour of these intrinsics is different enough from generic IR that this will cause problems, INF/NAN/out of range values are guaranteed to result in a 0x80000000 value - which plays havoc with constant folding which converts them to either zero or UNDEF. This is also an issue with the scalar implementations (which were already generic IR and what I was trying to match).
This patch changes both scalar and packed versions back to using x86-specific builtins.
It also deals with the other scalar conversion cases that are runtime rounding mode dependent and can have similar issues with constant folding.
A companion clang patch is at D22105
Differential Revision: https://reviews.llvm.org/D22106
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275981
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Sam Parker [Tue, 19 Jul 2016 14:44:05 +0000 (14:44 +0000)]
[ARM] Refactor Thumb2 Mul and Mla instr descs
Recommitting after r274347 was reverted. This patch introduces some
classes to refactor the 3 and 4 register Thumb2 multiplication
instruction descriptions, plus improved tests for some of those
instructions.
Differential Revision: https://reviews.llvm.org/D21929
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275979
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Pankaj Gode [Tue, 19 Jul 2016 14:30:21 +0000 (14:30 +0000)]
[AArch64] PredictableSelectIsExpensive for Vulcan.
Adding PredictableSelectIsExpensive for Vulcan
Differential Revision: https://reviews.llvm.org/D22448
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275978
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Peter Smith [Tue, 19 Jul 2016 14:15:33 +0000 (14:15 +0000)]
Add support for tlsldm assembler operator to ARM target
The standard local dynamic model for TLS on ARM systems needs two
relocations:
- R_ARM_TLS_LDM32 (module idx)
- R_ARM_TLS_LDO32 (offset of object from origin of module TLS block)
In GNU style assembler we use symbol(tlsldm) and symbol(tlsldo) to
produce these relocations.
llvm-mc for ARM supports symbol(tlsldo) but does not support symbol(tlsldm).
This patch wires up the existing symbol(tlsldm) to R_ARM_TLS_LDM32.
TLS for ARM is defined in Addenda to, and Errata in, the ABI for the
ARM Architecture
Differential Revision: https://reviews.llvm.org/D22461
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275977
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Simon Pilgrim [Tue, 19 Jul 2016 14:12:45 +0000 (14:12 +0000)]
[AARCH64] Fix linu triple typo
As promised in D22191
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275976
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Simon Pilgrim [Tue, 19 Jul 2016 13:35:11 +0000 (13:35 +0000)]
[AARCH64] Enable AARCH64 lit tests on windows dev machines
As discussed on PR27654, this patch fixes the triples of a lot of aarch64 tests and enables lit tests on windows
This will hopefully help stop cases where windows developers break the aarch64 target
Differential Revision: https://reviews.llvm.org/D22191
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275973
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Simon Pilgrim [Tue, 19 Jul 2016 12:26:51 +0000 (12:26 +0000)]
Get rid of VS2015 operator precedence warning. NFCI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275971
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Daniel Sanders [Tue, 19 Jul 2016 10:58:06 +0000 (10:58 +0000)]
[mips][ias] R_MIPS_GOT_(PAGE|OFST) do not need symbols
Reviewers: sdardis
Subscribers: dsanders, llvm-commits, sdardis
Differential Revision: https://reviews.llvm.org/D22458
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275968
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Daniel Sanders [Tue, 19 Jul 2016 10:49:03 +0000 (10:49 +0000)]
[mips] Correct label prefixes for N32 and N64.
Summary:
N32 and N64 follow the standard ELF conventions (.L) whereas O32 uses its own
($).
This fixes the majority of object differences between -fintegrated-as and
-fno-integrated-as.
Reviewers: sdardis
Subscribers: dsanders, sdardis, llvm-commits
Differential Revision: https://reviews.llvm.org/D22412
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275967
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Daniel Sanders [Tue, 19 Jul 2016 10:22:19 +0000 (10:22 +0000)]
[mips] Recognise the triple used by Debian stretch for mips64el.
Summary:
The triple used for this distribution is mips64el-linux-gnuabi64.
Reviewers: sdardis
Subscribers: sdardis, llvm-commits
Differential Revision: https://reviews.llvm.org/D22406
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275966
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Tobias Grosser [Tue, 19 Jul 2016 09:06:08 +0000 (09:06 +0000)]
[InstCombine] Minor cleanup of cast simplification code [NFC]
Summary:
This patch cleans up parts of InstCombine to raise its compliance with the LLVM coding standards and to increase its readability. The changes and according rationale are summarized in the following:
- Rename `ShouldOptimizeCast()` to `shouldOptimizeCast()` since functions should start with a lower case letter.
- Move `shouldOptimizeCast()` from InstCombineCasts.cpp to InstCombineAndOrXor.cpp since it's only used there.
- Simplify interface of `shouldOptimizeCast()`.
- Minor code style adaptions in `shouldOptimizeCast()`.
- Remove the documentation on the function definition of `shouldOptimizeCast()` since it just repeats the documentation on its declaration. Also enhance the documentation on its declaration with more information describing its intended use and make it doxygen-compliant.
- Change a comment in `foldCastedBitwiseLogic()` from `fold (logic (cast A), (cast B)) -> (cast (logic A, B))` to `fold logic(cast(A), cast(B)) -> cast(logic(A, B))` since the surrounding comments use this format.
- Remove comment `Only do this if the casts both really cause code to be generated.` in `foldCastedBitwiseLogic()` since it just repeats parts of the documentation of `shouldOptimizeCast()` and does not help to improve readability.
- Simplify the interface of `isEliminableCastPair()`.
- Removed the documentation on the function definition of `isEliminableCastPair()` which only contained obvious statements about its implementation. Instead added more general doxygen-compliant documentation to its declaration.
- Renamed parameter `DoXform` of `transformZExtIcmp()` to `DoTransform` to make its intention clearer.
- Moved documentation of `transformZExtIcmp()` from its definition to its declaration and made it doxygen-compliant.
Reviewers: vtjnash, grosser
Subscribers: majnemer, llvm-commits
Differential Revision: https://reviews.llvm.org/D22449
Contributed-by: Matthias Reisinger
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275964
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Tobias Grosser [Tue, 19 Jul 2016 09:01:46 +0000 (09:01 +0000)]
Style: drop some unnecessary ';' [NFC]
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275963
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Elena Demikhovsky [Tue, 19 Jul 2016 07:14:21 +0000 (07:14 +0000)]
AVX-512: Fixed BT instruction selection.
The following condition expression ( a >> n) & 1 is converted to "bt a, n" instruction. It works on all intel targets.
But on AVX-512 it was broken because the expression is modified to (truncate (a >>n) to i1).
I added the new sequence (truncate (a >>n) to i1) to the BT pattern.
Differential Revision: https://reviews.llvm.org/D22354
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275950
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Craig Topper [Tue, 19 Jul 2016 02:00:38 +0000 (02:00 +0000)]
[AVX512] Give priority to EVEX encoded PSHUFB over the VEX versions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275942
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Craig Topper [Tue, 19 Jul 2016 02:00:35 +0000 (02:00 +0000)]
[X86] Remove superfluous parameter from a multiclass. All instantiations passed the same value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275941
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George Burgess IV [Tue, 19 Jul 2016 01:29:15 +0000 (01:29 +0000)]
[MemorySSA] Update to the new shiny walker.
This patch updates MemorySSA's use-optimizing walker to be more
accurate and, in some cases, faster.
Essentially, this changed our core walking algorithm from a
cache-as-you-go DFS to an iteratively expanded DFS, with all of the
caching happening at the end. Said expansion happens when we hit a Phi,
P; we'll try to do the smallest amount of work possible to see if
optimizing above that Phi is legal in the first place. If so, we'll
expand the search to see if we can optimize to the next phi, etc.
An iteratively expanded DFS lets us potentially quit earlier (because we
don't assume that we can optimize above all phis) than our old walker.
Additionally, because we don't cache as we go, we can now optimize above
loops.
As an added bonus, this patch adds a ton of verification (if
EXPENSIVE_CHECKS are enabled), so finding bugs is easier.
Differential Revision: https://reviews.llvm.org/D21777
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275940
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Craig Topper [Tue, 19 Jul 2016 01:26:19 +0000 (01:26 +0000)]
[X86] Rename VINSERTzrr to use a capital Z to match other instructions. NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275939
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Vedant Kumar [Tue, 19 Jul 2016 01:17:20 +0000 (01:17 +0000)]
Retry: [llvm-profdata] Speed up merging by using a thread pool
Add a "-j" option to llvm-profdata to control the number of threads used.
Auto-detect NumThreads when it isn't specified, and avoid spawning threads when
they wouldn't be beneficial.
I tested this patch using a raw profile produced by clang (147MB). Here is the
time taken to merge 4 copies together on my laptop:
No thread pool: 112.87s user 5.92s system 97% cpu 2:01.08 total
With 2 threads: 134.99s user 26.54s system 164% cpu 1:33.31 total
Changes since the initial commit:
- When handling odd-length inputs, call ThreadPool::wait() before merging the
last profile. Should fix a race/off-by-one (see r275937).
Differential Revision: https://reviews.llvm.org/D22438
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275938
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Vedant Kumar [Tue, 19 Jul 2016 00:57:09 +0000 (00:57 +0000)]
Revert "[llvm-profdata] Speed up merging by using a thread pool"
This reverts commit r275921. It broke the ppc64be bot:
http://lab.llvm.org:8011/builders/clang-ppc64be-linux-multistage/builds/3537
I'm not sure why it broke, but based on the output, it looks like an
off-by-one (one profile left un-merged).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275937
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Wei Mi [Tue, 19 Jul 2016 00:50:43 +0000 (00:50 +0000)]
Recommit the patch "Use uniforms set to populate VecValuesToIgnore".
For instructions in uniform set, they will not have vector versions so
add them to VecValuesToIgnore.
For induction vars, those only used in uniform instructions or consecutive
ptrs instructions have already been added to VecValuesToIgnore above. For
those induction vars which are only used in uniform instructions or
non-consecutive/non-gather scatter ptr instructions, the related phi and
update will also be added into VecValuesToIgnore set.
The change will make the vector RegUsages estimation less conservative.
Differential Revision: https://reviews.llvm.org/D20474
The recommit fixed the testcase global_alias.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275936
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Matt Arsenault [Tue, 19 Jul 2016 00:35:22 +0000 (00:35 +0000)]
AMDGPU/SI: Fix SI scheduler refcount issue
Without this fix, releaseSuccessors when InOrOutBlock is
false could release SUs outside the schedule BasicBlock.
Patch by Axel Davy
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275935
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Matt Arsenault [Tue, 19 Jul 2016 00:35:03 +0000 (00:35 +0000)]
AMDGPU: Expand register indexing pseudos in custom inserter
This is to help moveSILowerControlFlow to before regalloc.
There are a couple of tradeoffs with this. The complete CFG
is visible to more passes, the loop body avoids an extra copy of m0,
vcc isn't required, and immediate offsets can be shrunk into s_movk_i32.
The disadvantage is the register allocator doesn't understand that
the single lane's vector is dead within the loop body, so an extra
register is used to outlive the loop block when expanding the
VGPR -> m0 loop. This also now results in worse waitcnt insertion
before the loop instead of after for pending operations at the point
of the indexing, but that should be fixed by future improvements to
cross block waitcnt insertion.
v_movreld_b32's operands are now modeled more correctly since vdst
is not a true output. This is kind of a hack to treat vdst as a
use operand. Extra checking is required in the verifier since
I can't seem to get tablegen to emit an implicit operand for a
virtual register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275934
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Lang Hames [Tue, 19 Jul 2016 00:25:52 +0000 (00:25 +0000)]
[Kaleidoscope][BuildingAJIT] More work on the text for Chapter 3.
Add an overview of stubs and compile callbacks before the discussion of the
source changes.
-- This line, and those below, will be ignored--
M docs/tutorial/BuildingAJIT3.rst
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275933
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Sanjoy Das [Tue, 19 Jul 2016 00:23:54 +0000 (00:23 +0000)]
[LoopReroll] Reroll loops with unordered atomic memory accesses
Reviewers: hfinkel, jfb, reames
Subscribers: mcrosier, mzolotukhin, llvm-commits
Differential Revision: https://reviews.llvm.org/D22385
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275932
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Matt Arsenault [Mon, 18 Jul 2016 23:20:46 +0000 (23:20 +0000)]
TableGen: Allow custom register operand decoder method
This is for a situation where the encoding for a register may be
different depending on the specific operand. For some instructions,
we want to apply additional restrictions beyond the encoding's
constraints.
In AMDGPU some operands are VSrc_32, using the VS_32 pseudo register
class which accept VGPRs, SGPRs, or immediates in the encoding.
Some specific instructions with the same encoding operand do not want
to allow immediates or SGPRs, but the encoding format is different
in this case than a regular VGPR_32 operand.
This allows specifying the encoding should be treated the same
without introducing yet another dummy register class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275929
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Matt Arsenault [Mon, 18 Jul 2016 23:09:51 +0000 (23:09 +0000)]
AMDGPU: Fix test name and broken CHECK-LABEL
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275928
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Vedant Kumar [Mon, 18 Jul 2016 22:50:10 +0000 (22:50 +0000)]
[utils] Generate html reports with the code coverage utility script
Instead of extracting raw coverage mappings into an artifact directory,
actually generate useful html reports for a given list of binaries with
symbol demangling turned on.
No tests, but this is actively being used to drive the (still nascent)
coverage bot.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275927
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Matt Arsenault [Mon, 18 Jul 2016 22:12:46 +0000 (22:12 +0000)]
Fix -Wreturn-type with gcc 4.8 and libc++
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275922
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Vedant Kumar [Mon, 18 Jul 2016 22:02:39 +0000 (22:02 +0000)]
[llvm-profdata] Speed up merging by using a thread pool
Add a "-j" option to llvm-profdata to control the number of threads
used. Auto-detect NumThreads when it isn't specified, and avoid spawning
threads when they wouldn't be beneficial.
I tested this patch using a raw profile produced by clang (147MB). Here is the
time taken to merge 4 copies together on my laptop:
No thread pool: 112.87s user 5.92s system 97% cpu 2:01.08 total
With 2 threads: 134.99s user 26.54s system 164% cpu 1:33.31 total
Differential Revision: https://reviews.llvm.org/D22438
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275921
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