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David Blaikie [Tue, 2 Sep 2014 17:42:01 +0000 (17:42 +0000)]
unique_ptrify PBQPBuilder::build
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216918
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Alexey Samsonov [Tue, 2 Sep 2014 17:38:34 +0000 (17:38 +0000)]
Fix signed integer overflow in PPCInstPrinter.
This bug was reported by UBSan.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216917
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David Blaikie [Tue, 2 Sep 2014 17:29:51 +0000 (17:29 +0000)]
Correct unique_ptr passing in MCObjectDisassembler::setFallbackRegion
Rather than passing by lvalue reference, pass by value to ensure that
the caller provides an rvalue (and use move assignment, rather than
release+reset, to assign to the member variable)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216916
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Alexey Samsonov [Tue, 2 Sep 2014 17:25:29 +0000 (17:25 +0000)]
Fix left shifts by too large exponents in MCParser
(which happened only on error recovery path).
This bug was reported by UBSan.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216915
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Andrea Di Biagio [Tue, 2 Sep 2014 17:22:49 +0000 (17:22 +0000)]
Revert: [APFloat] Fixed a bug in method 'fusedMultiplyAdd'.
This reverts revision 216913; the new test added at revision 216913
caused regression failures on a couple of buildbots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216914
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Andrea Di Biagio [Tue, 2 Sep 2014 16:44:56 +0000 (16:44 +0000)]
[APFloat] Fixed a bug in method 'fusedMultiplyAdd'.
When folding a fused multiply-add builtin call, make sure that we propagate the
correct result in the case where the addend is zero, and the two other operands
are finite non-zero.
Example:
define double @test() {
%1 = call double @llvm.fma.f64(double 7.0, double 8.0, double 0.0)
ret double %1
}
Before this patch, the instruction simplifier wrongly folded the builtin call
in function @test to constant 'double 7.0'.
With this patch, method 'fusedMultiplyAdd' correctly evaluates the multiply and
propagates the expected result (i.e. 56.0).
Added test fold-builtin-fma.ll with the reproducible from PR20832 plus extra
test cases to verify the behavior of method 'fusedMultiplyAdd' in the presence
of NaN/Inf operands.
This fixes PR20832.
Differential Revision: http://reviews.llvm.org/D5152
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216913
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JF Bastien [Tue, 2 Sep 2014 16:26:55 +0000 (16:26 +0000)]
Add missing override on ARMAsmBackend's dtor.
Test Plan: ninja check && ninja clang-test
Subscribers: aemerson
Differential Revision: http://reviews.llvm.org/D5075
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216912
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David Majnemer [Tue, 2 Sep 2014 16:22:00 +0000 (16:22 +0000)]
LICM: Don't crash when an instruction is used by an unreachable BB
Summary:
BBs might contain non-LCSSA'd values after the LCSSA pass is run if they
are unreachable from the entry block.
Normally, the users of the instruction would be PHIs but the unreachable
BBs have normal users; rewrite their uses to be undef values.
An alternative fix could involve fixing this at LCSSA but that would
require this invariant to hold after subsequent transforms. If a BB
created an unreachable block, they would be in violation of this.
This fixes PR19798.
Differential Revision: http://reviews.llvm.org/D5146
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216911
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Alexey Samsonov [Tue, 2 Sep 2014 16:19:41 +0000 (16:19 +0000)]
Fix left shifts of negative integers in AArch64 InstPrinter/Disassembler
Summary:
Left shift of negative integer is an undefined behavior, and
is reported by UBSan. It's ok for imm values to be negative, so we can
just replace left shifts with multiplications.
Test Plan: check-llvm test suite
Reviewers: t.p.northover
Reviewed By: t.p.northover
Subscribers: aemerson, mcrosier, llvm-commits
Differential Revision: http://reviews.llvm.org/D5132
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216910
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Hal Finkel [Tue, 2 Sep 2014 16:05:23 +0000 (16:05 +0000)]
Enable splitting indexing from loads with TargetConstants
When I recommitted r208640 (in r216898) I added an exclusion for TargetConstant
offsets, as there is no guarantee that a backend can handle them on generic
ADDs (even if it generates them during address-mode matching) -- and,
specifically, applying this transformation directly with TargetConstants caused
a self-hosting failure on PPC64. Ignoring all TargetConstants, however, is less
than ideal. Instead, for non-opaque constants, we can convert them into regular
constants for use with the generated ADD (or SUB).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216908
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Rafael Espindola [Tue, 2 Sep 2014 13:54:53 +0000 (13:54 +0000)]
Replace -use-init-array with -use-ctors.
We have been using .init-array for most systems for quiet some time,
but tools like llc are still defaulting to .ctors because the old
option was never changed.
This patch makes llc default to .init-array and changes the option to
be -use-ctors.
Clang is not affected by this. It has its own fancier logic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216905
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Aaron Ballman [Tue, 2 Sep 2014 12:19:02 +0000 (12:19 +0000)]
Silencing an MSVC C4334 warning ('<<' : result of 32-bit shift implicitly converted to 64 bits (was 64-bit shift intended?)). NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216902
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David Xu [Tue, 2 Sep 2014 09:33:56 +0000 (09:33 +0000)]
Merge Extend and Shift into a UBFX
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216899
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Hal Finkel [Tue, 2 Sep 2014 06:24:04 +0000 (06:24 +0000)]
Revert "Revert '[DAGCombiner] Split up an indexed load if only the base pointer value is live'"
I reverted r208640 in r209747 because r208640 broke self-hosting on PPC64. The
underlying cause of the failure is that pre-inc loads with increments
represented by ISD::TargetConstants were being transformed into ISD:::ADDs with
ISD::TargetConstant operands. PPC doesn't have a pattern for those, and so they
were selected as invalid r+r adds.
This recommits r208640, rebased and with an exclusion for ISD::TargetConstant
increments. This behavior seems correct, although in the future we might want
to ask the target to split out the indexing that uses ISD::TargetConstants.
Unfortunately, I don't yet have small test case where the relevant invalid
'add' instruction is not itself dead (and thus eliminated by
DeadMachineInstructionElim -- sometimes bugpoint is too good at removing things)
Original commit message (by Adam Nemet):
Right now the load may not get DCE'd because of the side-effect of updating
the base pointer.
This can happen if we lower a read-modify-write of an illegal larger type
(e.g. i48) such that the modification only affects one of the subparts (the
lower i32 part but not the higher i16 part). See the testcase.
In order to spot the dead load we need to revisit it when SimplifyDemandedBits
decided that the value of the load is masked off. This is the
CommitTargetLoweringOpt piece.
I checked compile time with ARM64 by sending SPEC bitcode files through llc.
No measurable change.
Fixes <rdar://problem/
16031651>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216898
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Hal Finkel [Tue, 2 Sep 2014 06:23:54 +0000 (06:23 +0000)]
[PowerPC] Guard against illegal selection of add for TargetConstant operands
r208640 was reverted because it caused a self-hosting failure on ppc64. The
underlying cause was the formation of ISD::ADD nodes with ISD::TargetConstant
operands. Because we have no patterns for 'add' taking 'timm' nodes, these are
selected as r+r add instructions (which is a miscompile). Guard against this
kind of behavior in the future by making the backend crash should this occur
(instead of silently generating invalid output).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216897
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Saleem Abdulrasool [Mon, 1 Sep 2014 23:48:39 +0000 (23:48 +0000)]
CodeGen: indicate Windows unwind data format
The structures for Windows unwinding are shared across multiple platforms.
Indicate the encoding to be used for the particular target. Use this to switch
the unwind emitter instantiated by the AsmPrinter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216895
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Saleem Abdulrasool [Mon, 1 Sep 2014 23:48:34 +0000 (23:48 +0000)]
CodeGen: split out the Win64Exception emitter
Move the Windows unwind information emitter into a separate header. This is not
related to DWARF based emission. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216894
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Saleem Abdulrasool [Mon, 1 Sep 2014 23:48:29 +0000 (23:48 +0000)]
MC: remove unnecessary enumeration prefix
This is an enum class, and will be appropriately prefixed, making the encoding
type prefix redundant. No change to any uses as the use of this was not yet
introduced.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216893
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David Majnemer [Mon, 1 Sep 2014 21:20:14 +0000 (21:20 +0000)]
SROA: Don't insert instructions before a PHI
SROA may decide that it needs to insert a bitcast and would set it's
insertion point before a PHI. This will create an invalid module
right quick.
Instead, choose the first insertion point in the basic block that holds
our PHI.
This fixes PR20822.
Differential Revision: http://reviews.llvm.org/D5141
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216891
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David Majnemer [Mon, 1 Sep 2014 21:10:02 +0000 (21:10 +0000)]
Revert "Revert two GEP-related InstCombine commits"
This reverts commit r216698 which reverted r216523 and r216598.
We would attempt to perform the transformation even if the match()
failed because, as a side effect, it would set V. This would trick us
into believing that we correctly found a place to correctly apply the
transform.
An additional test case was added to getelementptr.ll so that we might
not regress in the future.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216890
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Sanjay Patel [Mon, 1 Sep 2014 19:01:47 +0000 (19:01 +0000)]
Use an integer constant for FABS / FNEG (x86).
This change will ease refactoring LowerFABS() and LowerFNEG()
since they have a lot of overlap.
Remove the creation of a floating point constant from an integer
because it's going to be used for a bitwise integer op anyway.
No change to codegen expected, but the verbose comment string
for asm output may change from float values to hex (integer),
depending on whether the constant already exists or not.
Differential Revision: http://reviews.llvm.org/D5052
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216889
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Sanjay Patel [Mon, 1 Sep 2014 18:44:57 +0000 (18:44 +0000)]
Add a convenience method to copy wrapping, exact, and fast-math flags (NFC).
The loop vectorizer preserves wrapping, exact, and fast-math properties of scalar instructions.
This patch adds a convenience method to make that operation easier because we need to do this
in the loop vectorizer, SLP vectorizer, and possibly other places.
Although this is a 'no functional change' patch, I've added a testcase to verify that the exact
flag is preserved by the loop vectorizer. The wrapping and fast-math flags are already checked
in existing testcases.
Differential Revision: http://reviews.llvm.org/D5138
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216886
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Jingyue Wu [Mon, 1 Sep 2014 14:55:04 +0000 (14:55 +0000)]
Fix a typo in comments in r216862, NFC
PR20766 -> PR20776. Thanks Roman Divacky for the catch!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216883
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Tilmann Scheller [Mon, 1 Sep 2014 12:59:34 +0000 (12:59 +0000)]
[ARM] Add Thumb-2 code size optimization regression test for EOR.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216881
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Tilmann Scheller [Mon, 1 Sep 2014 12:53:29 +0000 (12:53 +0000)]
ARM] Add Thumb-2 code size optimization regression test for BIC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216880
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Yuri Gorshenin [Mon, 1 Sep 2014 12:51:00 +0000 (12:51 +0000)]
[asan-assembly-instrumentation] Prologue and epilogue are moved out from InstrumentMemOperand().
Reviewers: eugenis
Subscribers: llvm-commits
Differential revision: http://reviews.llvm.org/D4923
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216879
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Renato Golin [Mon, 1 Sep 2014 11:25:07 +0000 (11:25 +0000)]
Thumb2 M-class MSR instruction support changes
This patch implements a few changes related to the Thumb2 M-class MSR instruction:
* better handling of unpredictable encodings,
* recognition of the _g and _nzcvqg variants by the asm parser only if the DSP
extension is available, preferred output of MSR APSR moves with the _<bits>
suffix for v7-M.
Patch by Petr Pavlu.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216874
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Patrik Hagglund [Mon, 1 Sep 2014 11:04:07 +0000 (11:04 +0000)]
Fix in InlineSpiller to make the rematerilization loop also consider
implicit uses of the whole register when a sub register is defined.
Now the same iterator is used in the rematerilization loop as in the
spill loop later.
Patch provided by Mikael Holmen.
This fix was proposed and reviewed by Quentin Colombet,
http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-August/076135.html.
Unfortunately, this error in the rematerilization code has only been
seen in a large test case for an out-of-tree target, and is probably
hard to reproduce on an in-tree target. Therefore, no testcase is
provided.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216873
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Yuri Gorshenin [Mon, 1 Sep 2014 10:24:04 +0000 (10:24 +0000)]
Revert "[asan-assembly-instrumentation] Prologue and epilogue are moved out from InstrumentMemOperand()."
This reverts commit
895aa397038b8de86d83ac0997a70949a486e112.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216872
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Chandler Carruth [Mon, 1 Sep 2014 10:09:18 +0000 (10:09 +0000)]
Fix a really bad miscompile introduced in r216865 - the else-if logic
chain became completely broken here as *all* intrinsic users ended up
being skipped, and the ones that seemed to be singled out were actually
the exact wrong set.
This is a great example of why long else-if chains can be easily
confusing. Switch the entire code to use early exits and early continues
to have simpler (and more importantly, correct) logic here, as well as
fixing the reversed logic for detecting and continuing on lifetime
intrinsics.
I've also significantly cleaned up the test case and added another test
case demonstrating an example where the optimization is not (trivially)
safe to perform.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216871
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Renato Golin [Mon, 1 Sep 2014 10:00:17 +0000 (10:00 +0000)]
Small refactor on VectorizerHint for deduplication
Previously, the hint mechanism relied on clean up passes to remove redundant
metadata, which still showed up if running opt at low levels of optimization.
That also has shown that multiple nodes of the same type, but with different
values could still coexist, even if temporary, and cause confusion if the
next pass got the wrong value.
This patch makes sure that, if metadata already exists in a loop, the hint
mechanism will never append a new node, but always replace the existing one.
It also enhances the algorithm to cope with more metadata types in the future
by just adding a new type, not a lot of code.
Re-applying again due to MSVC 2013 being minimum requirement, and this patch
having C++11 that MSVC 2012 didn't support.
Fixes PR20655.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216870
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Yuri Gorshenin [Mon, 1 Sep 2014 09:56:45 +0000 (09:56 +0000)]
[asan-assembly-instrumentation] Prologue and epilogue are moved out from InstrumentMemOperand().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216869
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Hal Finkel [Mon, 1 Sep 2014 09:01:39 +0000 (09:01 +0000)]
Feed AA to the inliner and use AA->getModRefBehavior in AddAliasScopeMetadata
This feeds AA through the IFI structure into the inliner so that
AddAliasScopeMetadata can use AA->getModRefBehavior to figure out which
functions only access their arguments (instead of just hard-coding some
knowledge of memory intrinsics). Most of the information is only available from
BasicAA; this is important for preserving alias scoping information for
target-specific intrinsics when doing the noalias parameter attribute to
metadata conversion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216866
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Nick Lewycky [Mon, 1 Sep 2014 06:03:11 +0000 (06:03 +0000)]
Ignore lifetime intrinsics in use list for MemCpyOptimizer. Patch by Luqman Aden, review by Hal Finkel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216865
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Nick Lewycky [Mon, 1 Sep 2014 05:17:15 +0000 (05:17 +0000)]
Remove an errant outer loop that contains nothing but an inner loop over exactly the same elements. While no functionality is change intended (and hence there are no changes to tests), you don't want to skip this revision if bisecting for errors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216864
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Hal Finkel [Mon, 1 Sep 2014 04:26:40 +0000 (04:26 +0000)]
Fix AddAliasScopeMetadata again - alias.scope must be a complete description
I thought that I had fixed this problem in r216818, but I did not do a very
good job. The underlying issue is that when we add alias.scope metadata we are
asserting that this metadata completely describes the aliasing relationships
within the current aliasing scope domain, and so in the context of translating
noalias argument attributes, the pointers must all be based on noalias
arguments (as underlying objects) and have no other kind of underlying object.
In r216818 excluding appropriate accesses from getting alias.scope metadata is
done by looking for underlying objects that are not identified function-local
objects -- but that's wrong because allocas, etc. are also function-local
objects and we need to explicitly check that all underlying objects are the
noalias arguments for which we're adding metadata aliasing scopes.
This fixes the underlying-object check for adding alias.scope metadata, and
does some refactoring of the related capture-checking eligibility logic (and
adds more comments; hopefully making everything a bit clearer).
Fixes self-hosting on x86_64 with -mllvm -enable-noalias-to-md-conversion (the
feature is still disabled by default).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216863
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Jingyue Wu [Mon, 1 Sep 2014 03:47:25 +0000 (03:47 +0000)]
[MachineSink] Use the real post dominator tree
Summary:
Fixes a FIXME in MachineSinking. Instead of using the simple heuristics
in isPostDominatedBy, use the real MachinePostDominatorTree. The old
heuristics caused instructions to sink unnecessarily, and might create
register pressure.
Test Plan:
Added a NVPTX codegen test to verify that our change is in effect. It also
shows the unnecessary register pressure caused by over-sinking. Updated
affected tests in AArch64 and X86.
Reviewers: eliben, meheff, Jiangning
Reviewed By: Jiangning
Subscribers: jholewinski, aemerson, mcrosier, llvm-commits
Differential Revision: http://reviews.llvm.org/D4814
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216862
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David Blaikie [Sun, 31 Aug 2014 21:26:22 +0000 (21:26 +0000)]
DebugInfo: Elide lexical scopes which only contain other (inline or lexical) scopes.
DW_TAG_lexical_scopes inform debuggers about the instruction range for
which a given variable (or imported declaration/module/etc) is valid. If
the scope doesn't itself contain any such entities, it's a waste of
space and should be omitted.
We were correctly doing this for entirely empty leaves, but not for
intermediate nodes.
Reduces total (not just debug sections) .o file size for a bootstrap
-gmlt LLVM by 22% and bootstrap -gmlt clang executable by 13%. The wins
for a full -g build will be less as a % (and in absolute terms), but
should still be substantial - with some of that win being fewer
relocations, thus more substantiall reducing link times than fewer bytes
alone would have.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216861
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Matt Arsenault [Sun, 31 Aug 2014 19:19:57 +0000 (19:19 +0000)]
Consider addrspaces in canLosslesslyBitCastTo()
Make this conservatively correct and report false for different
address spaces, which might require a nontrivial translation.
Based on the few uses of this, I don't think this currently
breaks anything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216846
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David Blaikie [Sun, 31 Aug 2014 18:04:28 +0000 (18:04 +0000)]
DebugInfo: Move argument creation up into the caller that's unambiguously handling the subprogram scope (replacing a conditional with an assertion in the process)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216845
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David Blaikie [Sun, 31 Aug 2014 05:46:17 +0000 (05:46 +0000)]
Delay adding imported entity DIEs to the lexical scope, streamlining the check for "this scope has nothing in it"
This makes the emptiness of the scope with regards to variables and
nested scopes is the same as with regards to imported entities. Just
check if we had nothing at all before we build the node.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216840
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David Blaikie [Sun, 31 Aug 2014 05:41:15 +0000 (05:41 +0000)]
Modify DwarfDebug::constructImportedEntityDIE to return rather than insert into the scope
Another step towards improving lexical_scope handling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216839
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David Blaikie [Sun, 31 Aug 2014 05:32:06 +0000 (05:32 +0000)]
Refactor constructImportedEntityDIE(DwarfUnit, DIImportedEntity) to return a DIE rather than inserting it into a specified context.
First of many steps to improve lexical scope construction (to omit
trivial lexical scopes - those without any direct variables). To that
end it's easier not to create imported entities directly into the
lexical scope node, but to build them, then add them if necessary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216838
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David Blaikie [Sun, 31 Aug 2014 02:14:26 +0000 (02:14 +0000)]
Simplify expression using container's front() rather than begin()->
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216833
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David Blaikie [Sun, 31 Aug 2014 01:33:41 +0000 (01:33 +0000)]
Add some negative (and positive) static_assert checks for ArrayRef-of-pointer conversions introduced in r216709
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216830
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Josh Klontz [Sat, 30 Aug 2014 18:33:35 +0000 (18:33 +0000)]
[PATCH][Interpreter] Add missing FP intrinsic lowering.
Summary:
This extends the work done in [1], adding missing intrinsic lowering for floor, trunc, round and copysign.
[1] http://comments.gmane.org/gmane.comp.compilers.llvm.cvs/199372
Test Plan: Extended `test/ExecutionEngine/Interpreter/intrinsics.ll` to test the additional missing intrinsics. All tests pass.
Reviewers: dexonsmith
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D5120
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216827
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Jordan Rose [Sat, 30 Aug 2014 17:07:55 +0000 (17:07 +0000)]
Teach llvm-bcanalyzer to use one stream's BLOCKINFO to read another stream.
This allows streams that only use BLOCKINFO for debugging purposes to omit
the block entirely. As long as another stream is available with the correct
BLOCKINFO, the first stream can still be analyzed and dumped.
As part of this commit, BitstreamReader gets a move constructor and move
assignment operator, as well as a takeBlockInfo method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216826
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Craig Topper [Sat, 30 Aug 2014 16:48:34 +0000 (16:48 +0000)]
Remove 'virtual' keyword from methods markedwith 'override' keyword.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216823
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Craig Topper [Sat, 30 Aug 2014 16:48:22 +0000 (16:48 +0000)]
Use StringRef to avoid copies and simplify code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216822
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Craig Topper [Sat, 30 Aug 2014 16:48:19 +0000 (16:48 +0000)]
Add a test for converting ArrayRef<T *> to ArrayRef<const T *>.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216821
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Craig Topper [Sat, 30 Aug 2014 16:48:02 +0000 (16:48 +0000)]
Fix some cases where StringRef was being passed by const reference. Remove const from some other StringRefs since its implicitly const already.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216820
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Brad Smith [Sat, 30 Aug 2014 14:52:34 +0000 (14:52 +0000)]
JIT support has been added awhile ago.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216819
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Hal Finkel [Sat, 30 Aug 2014 12:48:33 +0000 (12:48 +0000)]
Fix AddAliasScopeMetadata to not add scopes when deriving from unknown pointers
The previous implementation of AddAliasScopeMetadata, which adds noalias
metadata to preserve noalias parameter attribute information when inlining had
a flaw: it would add alias.scope metadata to accesses which might have been
derived from pointers other than noalias function parameters. This was
incorrect because even some access known not to alias with all noalias function
parameters could easily alias with an access derived from some other pointer.
Instead, when deriving from some unknown pointer, we cannot add alias.scope
metadata at all. This fixes a miscompile of the test-suite's tramp3d-v4.
Furthermore, we cannot add alias.scope to functions unless we know they
access only argument-derived pointers (currently, we know this only for
memory intrinsics).
Also, we fix a theoretical problem with using the NoCapture attribute to skip
the capture check. This is incorrect (as explained in the comment added), but
would not matter in any code generated by Clang because we get only inferred
nocapture attributes in Clang-generated IR.
This functionality is not yet enabled by default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216818
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David Majnemer [Sat, 30 Aug 2014 09:19:05 +0000 (09:19 +0000)]
InstCombine: Respect recursion depth in visitUDivOperand
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216817
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David Majnemer [Sat, 30 Aug 2014 06:18:20 +0000 (06:18 +0000)]
InstCombine: Try harder to combine icmp instructions
consider: (and (icmp X, Y), (and Z, (icmp A, B)))
It may be possible to combine (icmp X, Y) with (icmp A, B).
If we successfully combine, create an 'and' instruction with Z.
This fixes PR20814.
N.B. There is room for improvement after this change but I'm not
convinced it's worth chasing yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216814
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Juergen Ributzka [Sat, 30 Aug 2014 06:16:26 +0000 (06:16 +0000)]
Revert r216805 "[MachineCombiner][AArch64] Use the correct register class for MADD, SUB, and OR."
I think this broke the build bot. Reverting it for now until I have time to take a closer look.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216813
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Sean Callanan [Sat, 30 Aug 2014 02:30:02 +0000 (02:30 +0000)]
Fixed a build problem when there were headers
for a different LLVM present in the system header
lookup path.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216812
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Nick Kledzik [Sat, 30 Aug 2014 02:29:49 +0000 (02:29 +0000)]
Add missing const to StringRef.copy()
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216811
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Nick Kledzik [Sat, 30 Aug 2014 01:57:34 +0000 (01:57 +0000)]
Fix typo and formatting
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216809
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Nick Kledzik [Sat, 30 Aug 2014 00:20:14 +0000 (00:20 +0000)]
Object/llvm-objdump: allow dumping of mach-o exports trie
MachOObjectFile in lib/Object currently has no support for parsing the rebase,
binding, and export information from the LC_DYLD_INFO load command in final
linked mach-o images. This patch adds support for parsing the exports trie data
structure. It also adds an option to llvm-objdump to dump that export info.
I did the exports parsing first because it is the hardest. The information is
encoded in a trie structure, but the standard ObjectFile way to inspect content
is through iterators. So I needed to make an iterator that would do a
non-recursive walk through the trie and maintain the concatenation of edges
needed for the current string prefix.
I plan to add similar support in MachOObjectFile and llvm-objdump to
parse/display the rebasing and binding info too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216808
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Juergen Ributzka [Fri, 29 Aug 2014 23:48:09 +0000 (23:48 +0000)]
[MachineCombiner][AArch64] Use the correct register class for MADD, SUB, and OR.
Select the correct register class for the various instructions that are
generated when combining instructions and constrain the registers to the
appropriate register class.
This fixes rdar://problem/
18183707.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216805
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Juergen Ributzka [Fri, 29 Aug 2014 23:48:06 +0000 (23:48 +0000)]
[FastISel][AArch64] Use the correct register class for branches.
Also constrain the register class for branches.
This fixes rdar://problem/
18181496.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216804
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Juergen Ributzka [Fri, 29 Aug 2014 23:48:03 +0000 (23:48 +0000)]
[MachineSinking] Clear kill flag of all operands at all their uses.
When sinking an instruction it might be moved past the original last use of one
of its operands. This last use has the kill flag set and the verifier will
obviously complain about this.
Before Machine Sinking (AArch64):
%vreg3<def> = ASRVXr %vreg1, %vreg2<kill>
%XZR<def> = SUBSXrs %vreg4, %vreg1<kill>, 160, %NZCV<imp-def>
...
After Machine Sinking:
%XZR<def> = SUBSXrs %vreg4, %vreg1<kill>, 160, %NZCV<imp-def>
...
%vreg3<def> = ASRVXr %vreg1, %vreg2<kill>
This fix clears all the kill flags in all instruction that use the same operands
as the instruction that is being sunk.
This fixes rdar://problem/
18180996.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216803
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Lang Hames [Fri, 29 Aug 2014 23:17:47 +0000 (23:17 +0000)]
[MCJIT] Move endian-aware read/writes from RuntimeDyldMachO into
RuntimeDyldImpl.
These are platform independent, and moving them to the base class allows
RuntimeDyldChecker to use them too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216801
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Adrian Prantl [Fri, 29 Aug 2014 22:44:07 +0000 (22:44 +0000)]
Debug info: Add a new explicit DIDescriptor flag for the "public" access
specifier and change the default behavior to only emit the
DW_AT_accessibility(public) attribute when the isPublic() is explicitly
set.
rdar://problem/
18154959
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216799
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Jean-Luc Duprat [Fri, 29 Aug 2014 22:43:30 +0000 (22:43 +0000)]
Comment only: Annotate loop as per mailing list discussion
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216798
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Alexey Samsonov [Fri, 29 Aug 2014 22:34:28 +0000 (22:34 +0000)]
Make isValidMCLOHType take unsigned instead of enum to avoid loading invalid enum values
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216797
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Kevin Enderby [Fri, 29 Aug 2014 22:30:52 +0000 (22:30 +0000)]
Next bit of support for llvm-objdump’s -private-headers for Mach-O files.
This adds the printing of the LC_SEGMENT load command and sections,
LC_SYMTAB and LC_DYSYMTAB load commands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216795
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Reid Kleckner [Fri, 29 Aug 2014 22:14:26 +0000 (22:14 +0000)]
AArch64: Silence -Wabsolute-value warning with std::abs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216794
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Reid Kleckner [Fri, 29 Aug 2014 22:12:08 +0000 (22:12 +0000)]
Speculative build fix for const, gcc, and ArrayRef overloads
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216793
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David Blaikie [Fri, 29 Aug 2014 22:10:52 +0000 (22:10 +0000)]
Revert accidentally committed patches r216787-r216789
Rushed when I realized I hadn't committed the FreeDeleter for a clang
change I'd committed, and didn't check that I had things lying around in
my client.
Apologies for the noise.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216792
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David Blaikie [Fri, 29 Aug 2014 22:05:31 +0000 (22:05 +0000)]
Add a trivial functor for use with unique_ptrs managing memory that needs to be freed rather than deleted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216790
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David Blaikie [Fri, 29 Aug 2014 22:05:29 +0000 (22:05 +0000)]
Omit DW_AT_artificial, DW_AT_external, and similar attributes under -gmlt
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216789
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David Blaikie [Fri, 29 Aug 2014 22:05:27 +0000 (22:05 +0000)]
Omit dwarf::DW_AT_frame_base under -gmlt
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216788
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David Blaikie [Fri, 29 Aug 2014 22:05:26 +0000 (22:05 +0000)]
Stuff
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216787
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Robin Morisset [Fri, 29 Aug 2014 21:53:01 +0000 (21:53 +0000)]
Fix typos in comments, NFC
Summary: Just fixing comments, no functional change.
Test Plan: N/A
Reviewers: jfb
Subscribers: mcrosier, llvm-commits
Differential Revision: http://reviews.llvm.org/D5130
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216784
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Reid Kleckner [Fri, 29 Aug 2014 21:42:21 +0000 (21:42 +0000)]
Add a const and munge some comments
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216781
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Reid Kleckner [Fri, 29 Aug 2014 21:42:08 +0000 (21:42 +0000)]
musttail: Forward regparms of variadic functions on x86_64
Summary:
If a variadic function body contains a musttail call, then we copy all
of the remaining register parameters into virtual registers in the
function prologue. We track the virtual registers through the function
body, and add them as additional registers to pass to the call. Because
this is all done in virtual registers, the register allocator usually
gives us good code. If the function does a call, however, it will have
to spill and reload all argument registers (ew).
Forwarding regparms on x86_32 is not implemented because most compilers
don't support varargs in 32-bit with regparms.
Reviewers: majnemer
Subscribers: aemerson, llvm-commits
Differential Revision: http://reviews.llvm.org/D5060
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216780
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Reid Kleckner [Fri, 29 Aug 2014 21:25:28 +0000 (21:25 +0000)]
Verifier: Don't reject varargs callee cleanup functions
We've rejected these kinds of functions since r28405 in 2006 because
it's impossible to lower the return of a callee cleanup varargs
function. However there are lots of legal ways to leave such a function
without returning, such as aborting. Today we can leave a function with
a musttail call to another function with the correct prototype, and
everything works out.
I'm removing the verifier check declaring that a normal return from such
a function is UB.
Reviewed By: nlewycky
Differential Revision: http://reviews.llvm.org/D5059
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216779
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Louis Gerbarg [Fri, 29 Aug 2014 21:00:22 +0000 (21:00 +0000)]
Remove spurious mask operations from AArch64 add->compares on 16 and 8 bit values
This patch checks for DAG patterns that are an add or a sub followed by a
compare on 16 and 8 bit inputs. Since AArch64 does not support those types
natively they are legalized into 32 bit values, which means that mask operations
are inserted into the DAG to emulate overflow behaviour. In many cases those
masks do not change the result of the processing and just introduce a dependent
operation, often in the middle of a hot loop.
This patch detects the relevent DAG patterns and then tests to see if the
transforms are equivalent with and without the mask, removing the mask if
possible. The exact mechanism of this patch was discusses in
http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-July/074444.html
There is a reasonably good chance there are missed oppurtunities due to similiar
(but not identical) DAG patterns that could be funneled into this test, adding
them should be simple if we see test cases.
Tests included.
rdar://
13754426
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216776
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Reid Kleckner [Fri, 29 Aug 2014 20:50:31 +0000 (20:50 +0000)]
X86: Fix conflict over ESI between base register and rep;movsl
The new solution is to not use this lowering if there are any dynamic
allocas in the current function. We know up front if there are dynamic
allocas, but we don't know if we'll need to create stack temporaries
with large alignment during lowering. Conservatively assume that we will
need such temporaries.
Reviewed By: hans
Differential Revision: http://reviews.llvm.org/D5128
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216775
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Sanjay Patel [Fri, 29 Aug 2014 20:35:00 +0000 (20:35 +0000)]
another typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216774
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Sanjay Patel [Fri, 29 Aug 2014 20:34:17 +0000 (20:34 +0000)]
typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216773
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Robin Morisset [Fri, 29 Aug 2014 20:32:58 +0000 (20:32 +0000)]
Relax the constraint more in MemoryDependencyAnalysis.cpp
Even loads/stores that have a stronger ordering than monotonic can be safe.
The rule is no release-acquire pair on the path from the QueryInst, assuming that
the QueryInst is not atomic itself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216771
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Robin Morisset [Fri, 29 Aug 2014 20:19:23 +0000 (20:19 +0000)]
[X86] Refactor X86ISelDAGToDAG::SelectAtomicLoadArith - NFC
Summary:
Mostly renaming the (not very explicit) variables Tmp0, .. Tmp4, and grouping
related statements together, along with a few lines of comments for the
surprising parts.
No functional change intended.
Test Plan: make check-all
Reviewers: jfb
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D5088
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216768
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Nick Kledzik [Fri, 29 Aug 2014 19:55:55 +0000 (19:55 +0000)]
Add missing mach-o EXPORT_SYMBOL_FLAG_KIND_ABSOLUTE
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216759
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Jean-Luc Duprat [Fri, 29 Aug 2014 19:41:04 +0000 (19:41 +0000)]
Tablegen fixes for new syntax when initializing bits from variables.
Followup to r215086.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216757
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Juergen Ributzka [Fri, 29 Aug 2014 17:58:16 +0000 (17:58 +0000)]
[FastISel][AArch64] Fix an incorrect kill flag due to a bug in SelectTrunc.
When we select a trunc instruction we don't emit any code if the type is already
i32 or smaller. This is because the instruction that uses the truncated value
will deal with it.
This behavior can incorrectly transfer a kill flag, which was meant for the
result of the truncate, onto the source register.
%2 = trunc i32 %1 to i16
... = ... %2 -> ... = ... vreg1 <kill>
... = ... %1 ... = ... vreg1
This commit fixes this by emitting a COPY instruction, so that the result and
source register are distinct virtual registers.
This fixes rdar://problem/
18178188.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216750
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Tilmann Scheller [Fri, 29 Aug 2014 17:19:00 +0000 (17:19 +0000)]
[ARM] Add Thumb-2 code size optimization test for ASR (register).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216746
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Tilmann Scheller [Fri, 29 Aug 2014 17:02:28 +0000 (17:02 +0000)]
[ARM] Add Thumb-2 code size optimization test for ASR (immediate).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216744
91177308-0d34-0410-b5e6-
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Hal Finkel [Fri, 29 Aug 2014 16:33:41 +0000 (16:33 +0000)]
Fix a typo in AddAliasScopeMetadata
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216741
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Matt Arsenault [Fri, 29 Aug 2014 16:01:17 +0000 (16:01 +0000)]
Make fabs safe to speculatively execute
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216736
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Matt Arsenault [Fri, 29 Aug 2014 16:01:14 +0000 (16:01 +0000)]
R600/SI: Use mad for fsub + fmul
We can use a negate source modifier to match
this for fsub.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216735
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Tim Northover [Fri, 29 Aug 2014 15:34:58 +0000 (15:34 +0000)]
AArch64: only try to get operand of a known node.
A bug in r216725 meant we tried to discover the type of a SETCC before
confirming the node actually was a SETCC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216734
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Frederic Riss [Fri, 29 Aug 2014 15:32:15 +0000 (15:32 +0000)]
Remove unnecessary regex in test pattern per dblaikie suggestion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216733
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Sanjay Patel [Fri, 29 Aug 2014 15:32:09 +0000 (15:32 +0000)]
typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216732
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Jingyue Wu [Fri, 29 Aug 2014 15:30:20 +0000 (15:30 +0000)]
[NVPTX] Make the alignment an explicit argument to ldu/ldg
Summary:
Instead of specifying the alignment as metadata which may be destroyed by
transformation passes, make the alignment the second argument to ldu/ldg
intrinsic calls.
Test Plan:
ldu-ldg.ll
ldu-i8.ll
ldu-reg-plus-offset.ll
Reviewers: eliben, meheff, jholewinski
Reviewed By: meheff, jholewinski
Subscribers: jholewinski, llvm-commits
Differential Revision: http://reviews.llvm.org/D5093
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216731
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Tilmann Scheller [Fri, 29 Aug 2014 15:13:35 +0000 (15:13 +0000)]
[ARM] Make Thumb-2 code size optimization test more strict.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216729
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Tilmann Scheller [Fri, 29 Aug 2014 15:04:40 +0000 (15:04 +0000)]
[ARM] Add a first test for the Thumb-2 code size optimization pass.
While working on a Thumb-2 code size optimization I just realized that we don't have any regression tests for it.
So here's a first test case, I plan to increase the coverage over time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216728
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Tim Northover [Fri, 29 Aug 2014 13:05:18 +0000 (13:05 +0000)]
AArch64: skip select/setcc combine in complex case.
In an llvm-stress generated test, we were trying to create a v0iN type and
asserting when that failed. This case could probably be handled by the
function, but not without added complexity and the situation it arises in is
sufficiently odd that there's probably no benefit anyway.
Should fix PR20775.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216725
91177308-0d34-0410-b5e6-
96231b3b80d8