Vladimir Sukharev [Thu, 16 Apr 2015 15:20:51 +0000 (15:20 +0000)]
[AArch64] Add v8.1a "Privileged Access Never" extension
Reviewers: jmolloy
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8498
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235104
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Hans Wennborg [Thu, 16 Apr 2015 15:09:33 +0000 (15:09 +0000)]
Add a triple to switch.ll test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235103
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Vladimir Sukharev [Thu, 16 Apr 2015 15:01:20 +0000 (15:01 +0000)]
[AArch64] Handle Cyclone-specific register in common way
Reviewers: jmolloy
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8584
Patch by: Tom Coxon
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235102
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Hans Wennborg [Thu, 16 Apr 2015 14:49:23 +0000 (14:49 +0000)]
Switch lowering: extract jump tables and bit tests before building binary tree (PR22262)
This is a major rewrite of the SelectionDAG switch lowering. The previous code
would lower switches as a binary tre, discovering clusters of cases
suitable for lowering by jump tables or bit tests as it went along. To increase
the likelihood of finding jump tables, the binary tree pivot was selected to
maximize case density on both sides of the pivot.
By not selecting the pivot in the middle, the binary trees would not always
be balanced, leading to performance problems in the generated code.
This patch rewrites the lowering to search for clusters of cases
suitable for jump tables or bit tests first, and then builds the binary
tree around those clusters. This way, the binary tree will always be balanced.
This has the added benefit of decoupling the different aspects of the lowering:
tree building and jump table or bit tests finding are now easier to tweak
separately.
For example, this will enable us to balance the tree based on profile info
in the future.
The algorithm for finding jump tables is O(n^2), whereas the previous algorithm
was O(n log n) for common cases, and quadratic only in the worst-case. This
doesn't seem to be major problem in practice, e.g. compiling a file consisting
of a 10k-case switch was only 30% slower, and such large switches should be rare
in practice. Compiling e.g. gcc.c showed no compile-time difference. If this
does turn out to be a problem, we could limit the search space of the algorithm.
This commit also disables all optimizations during switch lowering in -O0.
Differential Revision: http://reviews.llvm.org/D8649
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235101
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Vladimir Sukharev [Thu, 16 Apr 2015 14:36:13 +0000 (14:36 +0000)]
[AArch64] Follow-up to: Refactor AArch64NamedImmMapper to become dependent on subtarget features
Fixed compilation with clang on some buildbots with "-Werror -Wmissing-field-initializers"
Related to: http://reviews.llvm.org/rL235089
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235099
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Toma Tabacu [Thu, 16 Apr 2015 13:37:32 +0000 (13:37 +0000)]
[mips] [IAS] Preserve microMIPS label marking for objects when assigning.
Summary: Previously, this was only happening for functions, but because of .insn, objects can also be marked now.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8007
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235095
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Aaron Ballman [Thu, 16 Apr 2015 13:29:36 +0000 (13:29 +0000)]
Silencing a -Wunused-but-set-variable warning; NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235094
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Rafael Espindola [Thu, 16 Apr 2015 12:59:30 +0000 (12:59 +0000)]
Don't depend on the order relocations are written to a .o file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235092
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Benjamin Kramer [Thu, 16 Apr 2015 12:43:33 +0000 (12:43 +0000)]
[Mips] Use unique_ptr to manage ownership.
Required some tweaking of ValueMap to accommodate a move-only value
type. No functional change intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235091
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Benjamin Kramer [Thu, 16 Apr 2015 12:43:07 +0000 (12:43 +0000)]
Make it obvious that we're iterating over a range of pointers.
Found by -Wrange-loop-analysis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235090
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Vladimir Sukharev [Thu, 16 Apr 2015 12:15:27 +0000 (12:15 +0000)]
[AArch64] Refactor AArch64NamedImmMapper to become dependent on subtarget features.
In order to introduce v8.1a-specific entities, Mappers should be aware of SubtargetFeatures available.
This patch introduces refactoring, that will then allow to easily introduce:
- v8.1-specific "pan" PState for PStateMapper (PAN extension)
- v8.1-specific sysregs for SysRegMapper (LOR,VHE extensions)
Reviewers: jmolloy
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8496
Patch by Tom Coxon
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235089
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James Molloy [Thu, 16 Apr 2015 11:37:40 +0000 (11:37 +0000)]
[AArch64] Fix invalid use of references to BuildMI.
This was found in GCC PR65773 (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65773).
We shouldn't be taking a reference to the temporary that BuildMI returns, we must copy it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235088
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Vladimir Sukharev [Thu, 16 Apr 2015 11:34:25 +0000 (11:34 +0000)]
[ARM] Add v8.1a "Privileged Access Never" extension
Reviewers: jmolloy
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8504
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235087
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Yaron Keren [Thu, 16 Apr 2015 10:53:22 +0000 (10:53 +0000)]
Update MCELFStreamer::reset() following r234714
and order fields according to declaration order.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235085
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Toma Tabacu [Thu, 16 Apr 2015 09:53:47 +0000 (09:53 +0000)]
[mips] [IAS] Add support for the .insn directive.
Summary:
This assembler directive marks the current label as an instruction label in microMIPS and MIPS16.
This initial implementation works only for microMIPS.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8006
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235084
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Pavel Labath [Thu, 16 Apr 2015 08:58:15 +0000 (08:58 +0000)]
Revert "[RuntimeDyldELF] Fold Placeholder into Addend"
This reverts commit
cbbeac14f0ddca71f6d8ff91cd05522bd23908e5.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235082
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Pavel Labath [Thu, 16 Apr 2015 08:58:11 +0000 (08:58 +0000)]
Revert "[RuntimeDyldELF] Fix missing cases in Placeholder processing"
This reverts commit
ec0a34f850eca0d97e0592236e0ac14083aa1c3d.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235081
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Simon Pilgrim [Thu, 16 Apr 2015 08:21:09 +0000 (08:21 +0000)]
TRUNCATE constant folding - minor fix for rL233224
Fix for test case found by James Molloy - TRUNCATE of constant build vectors can be more simply achieved by simply replacing with a new build vector node with the truncated value type - no need to touch the scalar operands at all.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235079
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Daniel Berlin [Thu, 16 Apr 2015 04:28:32 +0000 (04:28 +0000)]
Replace loop doing postorder walk with postorder iterator
Summary: LoopInfoImpl's loop population is just a normal postorder walk, written out.
Reviewers: chandlerc
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D9032
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235073
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Ahmed Bougacha [Thu, 16 Apr 2015 02:39:14 +0000 (02:39 +0000)]
[CodeGen] Re-apply r234809 (concat of scalars), with an x86_mmx fix.
The only type that isn't an integer, isn't floating point, and isn't
a vector; ladies and gentlemen, the gift that keeps on giving: x86_mmx!
Fixes PR23246.
Original message (reverted in r235062):
[CodeGen] Combine concat_vectors of scalars into build_vector.
Combine something like:
(v8i8 concat_vectors (v2i8 bitcast (i16)) x4)
into:
(v8i8 (bitcast (v4i16 BUILD_VECTOR (i16) x4)))
If any of the scalars are floating point, use that throughout.
Differential Revision: http://reviews.llvm.org/D8948
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235072
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Duncan P. N. Exon Smith [Thu, 16 Apr 2015 02:24:01 +0000 (02:24 +0000)]
DebugInfo: DIRef<> => TypedDebugNodeRef<>
Delete `DIRef<>`, and replace the remaining uses of it with
`TypedDebugNodeRef<>`. To minimize code churn, I've added typedefs from
`MDTypeRef` to `DITypeRef` (etc.).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235071
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Keno Fischer [Thu, 16 Apr 2015 02:00:38 +0000 (02:00 +0000)]
[RuntimeDyldELF] Fix missing cases in Placeholder processing
Try to appease the build bots. We should write rtdyld test cases for these
to make them testible on other platforms.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235070
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Duncan P. N. Exon Smith [Thu, 16 Apr 2015 01:53:33 +0000 (01:53 +0000)]
DebugInfo: Gut DIDescriptor
PR23080 is almost finished. With this commit, there's no consequential
API in `DIDescriptor` and its subclasses. What's left?
- Default-constructed to `nullptr`.
- Handy `const_cast<>` (constructed from `const`, but accessors are
non-`const`).
I think the safe way to catch those is to delete the classes and fix
compile errors. That'll be my next step, after I delete the `DITypeRef`
(etc.) wrapper around `MDTypeRef`.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235069
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Duncan P. N. Exon Smith [Thu, 16 Apr 2015 01:37:00 +0000 (01:37 +0000)]
DebugInfo: Gut DIScope, DIEnumerator and DISubrange
The only class the still has API left is `DIDescriptor` itself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235067
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Duncan P. N. Exon Smith [Thu, 16 Apr 2015 01:01:28 +0000 (01:01 +0000)]
DebugInfo: Gut DIType and subclasses
Continuing PR23080, gut `DIType` and its various subclasses, leaving
behind thin wrappers around the pointer types in the new debug info
hierarchy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235064
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Nick Lewycky [Thu, 16 Apr 2015 00:56:20 +0000 (00:56 +0000)]
Revert r234809 because it caused PR23246.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235062
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Reid Kleckner [Thu, 16 Apr 2015 00:02:04 +0000 (00:02 +0000)]
[SEH] Deal with users of the old lpad for SEH catch-all blocks
The way we split SEH catch-all blocks can leave some dead EH values
behind at -O0. Try to remove them, and if we fail, replace them all with
undef.
Fixes a crash when removing the old unreachable landingpad which is
still used by extractvalue instructions in the catch-all block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235061
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Keno Fischer [Wed, 15 Apr 2015 23:49:29 +0000 (23:49 +0000)]
[RuntimeDyldELF] Fold Placeholder into Addend
Summary:
This allows us to get rid of the original unrelocated object file after
we're done processing relocations (but before applying them).
MachO and COFF already do not require this (currently we have temporary hacks
to prevent ownership from being released, but those are brittle and should be
removed soon).
The placeholder mechanism allowed the relocation resolver to look at original
object file to obtain more information that are required to apply the
relocations. This is usually necessary in two cases:
- For relocations targetting sub-word memory locations, there may be pieces
of the instruction at the target address which we should not override.
- Some relocations on some platforms allow an extra addend to be encoded in
their immediate fields.
The problem is that in the second case the information cannot be recovered
after the relocations have been applied once because they will have been
overridden. In the first case we also need to be careful to not use any bits
that aren't fixed and may have been overriden by applying a first relocation.
In the past both have been fixed by just looking at original object file. This
patch attempts to recover the information from the first by looking at the
relocated object file, while the extra addend in the second case is read
upon relocation processing and addend to the regular addend.
I have tested this on X86. Other platforms represent my best understanding
of how those relocations should work, but I may have missed something because
I do not have access to those platforms.
We will keep the ugly workarounds in place for a couple of days, so this commit
can be reverted if it breaks the bots.
Reviewers: petarj, t.p.northover, lhames
Reviewed By: lhames
Subscribers: aemerson, llvm-commits
Differential Revision: http://reviews.llvm.org/D9028
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235060
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Duncan P. N. Exon Smith [Wed, 15 Apr 2015 23:49:09 +0000 (23:49 +0000)]
DebugInfo: Remove unnecessary API from DIDerivedType and DIType
Remove the accessors of `DIDerivedType` that downcast to
`MDDerivedType`, shifting the `cast<MDDerivedType>` into the callers.
Also remove `DIType::isValid()`, which is really just a check against
`nullptr` at this point.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235059
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Duncan P. N. Exon Smith [Wed, 15 Apr 2015 23:19:27 +0000 (23:19 +0000)]
DebugInfo: Gut DICompileUnit and DIFile
Continuing gutting `DIDescriptor` subclasses; this edition,
`DICompileUnit` and `DIFile`. In the name of PR23080.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235055
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Duncan P. N. Exon Smith [Wed, 15 Apr 2015 22:42:43 +0000 (22:42 +0000)]
DebugInfo: factor out dead variable in NDEBUG from r235050
Caught by the lld bot:
http://lab.llvm.org:8011/builders/lld-x86_64-darwin13/builds/9832
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235052
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Duncan P. N. Exon Smith [Wed, 15 Apr 2015 22:29:27 +0000 (22:29 +0000)]
DebugInfo: Remove 'inlinedAt:' field from MDLocalVariable
Remove 'inlinedAt:' from MDLocalVariable. Besides saving some memory
(variables with it seem to be single largest `Metadata` contributer to
memory usage right now in -g -flto builds), this stops optimization and
backend passes from having to change local variables.
The 'inlinedAt:' field was used by the backend in two ways:
1. To tell the backend whether and into what a variable was inlined.
2. To create a unique id for each inlined variable.
Instead, rely on the 'inlinedAt:' field of the intrinsic's `!dbg`
attachment, and change the DWARF backend to use a typedef called
`InlinedVariable` which is `std::pair<MDLocalVariable*, MDLocation*>`.
This `DebugLoc` is already passed reliably through the backend (as
verified by r234021).
This commit removes the check from r234021, but I added a new check
(that will survive) in r235048, and changed the `DIBuilder` API in
r235041 to require a `!dbg` attachment whose 'scope:` is in the same
`MDSubprogram` as the variable's.
If this breaks your out-of-tree testcases, perhaps the script I used
(mdlocalvariable-drop-inlinedat.sh) will help; I'll attach it to PR22778
in a moment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235050
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Duncan P. N. Exon Smith [Wed, 15 Apr 2015 22:15:46 +0000 (22:15 +0000)]
Verifier: Check that @llvm.dbg.* intrinsics have a !dbg attachment
Before we start to rely on valid `!dbg` attachments, add a check to the
verifier that `@llvm.dbg.*` intrinsics always have one. Also check that
the `scope:` fields point at the same `MDSubprogram`.
This is in the context of PR22778. The check that the `inlinedAt:`
fields agree has baked for a while (since r234021), so I'll kill [1] the
`MDLocalVariable::getInlinedAt()` field soon.
[1]: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-
20150330/269387.html
Unfortunately, that means it's impossible to keep the current `Verifier`
checks, which rely on comparing `inlinedAt:` fields. We'll be able to
keep the checks I'm adding here.
If this breaks your out-of-tree testcases, the upgrade script
(add-dbg-to-intrinsics.sh) attached to PR22778 that I used for r235040
might fix them for you.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235048
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Richard Trieu [Wed, 15 Apr 2015 21:40:50 +0000 (21:40 +0000)]
One more -Wrange-loop-analysis cleanup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235044
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Lang Hames [Wed, 15 Apr 2015 21:18:41 +0000 (21:18 +0000)]
[RuntimeDyld] Work around a bug in RuntimeDyldELF exposed by r234839.
Hopefully this will fix the failures on the windows builders that started with
r234839.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235043
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Duncan P. N. Exon Smith [Wed, 15 Apr 2015 21:18:07 +0000 (21:18 +0000)]
DebugInfo: Require a DebugLoc in DIBuilder::insertDeclare()
Change `DIBuilder::insertDeclare()` and `insertDbgValueIntrinsic()` to
take an `MDLocation*`/`DebugLoc` parameter which it attaches to the
created intrinsic. Assert at creation time that the `scope:` field's
subprogram matches the variable's. There's a matching `clang` commit to
use the API.
The context for this is PR22778, which is removing the `inlinedAt:`
field from `MDLocalVariable`, instead deferring to the `!dbg` location
attached to the debug info intrinsic. The best way to ensure we always
have a `!dbg` attachment is to require one at creation time. I'll be
adding verifier checks next, but this API change is the best way to
shake out frontend bugs.
Note: I added an `llvm_unreachable()` in `bindings/go` and passed in
`nullptr` for the `DebugLoc`. The `llgo` folks will eventually need to
pass a valid `DebugLoc` here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235041
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Duncan P. N. Exon Smith [Wed, 15 Apr 2015 21:04:10 +0000 (21:04 +0000)]
DebugInfo: Add missing !dbg attachments to intrinsics
Add missing `!dbg` attachments to `@llvm.dbg.*` intrinsics. I updated
these using a script (add-dbg-to-intrinsics.sh) that I'll attach to
PR22778 for posterity.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235040
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Daniel Berlin [Wed, 15 Apr 2015 19:36:10 +0000 (19:36 +0000)]
Update for post-commit review comments
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235038
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Reid Kleckner [Wed, 15 Apr 2015 18:48:15 +0000 (18:48 +0000)]
[WinEH] Try to make the MachineFunction CFG more accurate
This avoids emitting code for unreachable landingpad blocks that contain
calls to llvm.eh.actions and indirectbr.
It's also a first step towards unifying the SEH and WinEH lowering
codepaths. I'm keeping the old fan-in lowering of SEH around until the
preparation version works well enough that we can switch over without
breaking existing users.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235037
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Lang Hames [Wed, 15 Apr 2015 18:26:24 +0000 (18:26 +0000)]
[Orc] Refactor the CompileOnDemandLayer to make its addModuleSet method
signature match the other layers.
This makes it possible to compose other layers (e.g. IRTransformLayer) on top
of CompileOnDemandLayer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235029
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Reid Kleckner [Wed, 15 Apr 2015 17:47:26 +0000 (17:47 +0000)]
Reland "[WinEH] Use the parent function when computing frameescape labels"
Fixed the test by removing extraneous quotes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235028
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Reid Kleckner [Wed, 15 Apr 2015 17:43:54 +0000 (17:43 +0000)]
Revert "[WinEH] Use the parent function when computing frameescape labels"
This reverts commit r235025. The test isn't passing yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235027
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Daniel Berlin [Wed, 15 Apr 2015 17:41:42 +0000 (17:41 +0000)]
Add range iterators for post order and inverse post order. Use them
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235026
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Reid Kleckner [Wed, 15 Apr 2015 17:32:01 +0000 (17:32 +0000)]
[WinEH] Use the parent function when computing frameescape labels
Fixes assertions in MC when a local label wasn't defined.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235025
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Charlie Turner [Wed, 15 Apr 2015 17:28:23 +0000 (17:28 +0000)]
Fix BXJ is undefined in AArch32.
BXJ was incorrectly said to be unsupported in ARMv8-A. It is not
supported in the A64 instruction set, but it is supported in the T32
and A32 instruction sets, because it's listed as an instruction in the
ARM ARM section F7.1.28.
Using SP as an operand to BXJ changed from UNPREDICTABLE to
PREDICTABLE in v8-A. This patch reflects that update as well.
This was found by MCHammer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235024
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Rafael Espindola [Wed, 15 Apr 2015 17:24:06 +0000 (17:24 +0000)]
Make it explicit which sections these relocations are in.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235022
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Jingyue Wu [Wed, 15 Apr 2015 17:14:03 +0000 (17:14 +0000)]
[NFC] [SLSR] clean up some tests
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235021
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Rafael Espindola [Wed, 15 Apr 2015 16:59:47 +0000 (16:59 +0000)]
Make it clear in which sections these relocations are.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235020
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Jingyue Wu [Wed, 15 Apr 2015 16:46:13 +0000 (16:46 +0000)]
[SLSR] handle candidate form (B + i * S)
Summary:
With this patch, SLSR may rewrite
S1: X = B + i * S
S2: Y = B + i' * S
to
S2: Y = X + (i' - i) * S
A secondary improvement: if (i' - i) is a power of 2, emit Y as X + (S << log(i' - i)). (S << log(i' -i)) is in a canonical form and thus more likely GVN'ed than (i' - i) * S.
Test Plan: slsr-add.ll
Reviewers: hfinkel, sanjoy, meheff, broune, eliben
Reviewed By: eliben
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8983
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235019
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Rafael Espindola [Wed, 15 Apr 2015 16:45:03 +0000 (16:45 +0000)]
Make it clear where the relocations we are CHECKING are from.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235018
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Rafael Espindola [Wed, 15 Apr 2015 15:59:37 +0000 (15:59 +0000)]
Update tests to not be as dependent on section numbers.
Many of these predate llvm-readobj. With elf-dump we had to match
a relocation to symbol number and symbol number to symbol name or
section number.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235015
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Sanjay Patel [Wed, 15 Apr 2015 15:47:51 +0000 (15:47 +0000)]
[X86] add an exedepfix entry for movq == movlps == movlpd
This is a 1-line patch (with a TODO for AVX because that will affect
even more regression tests) that lets us substitute the appropriate
64-bit store for the float/double/int domains.
It's not clear to me exactly what the difference is between the 0xD6 (MOVPQI2QImr) and
0x7E (MOVSDto64mr) opcodes, but this is apparently the right choice.
Differential Revision: http://reviews.llvm.org/D8691
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235014
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Sanjay Patel [Wed, 15 Apr 2015 15:22:55 +0000 (15:22 +0000)]
[x86] Implement combineRepeatedFPDivisors
Set the transform bar at 2 divisions because the fastest current
x86 FP divider circuit is in SandyBridge / Haswell at 10 cycle
latency (best case) relative to a 5 cycle multiplier.
So that's the worst case for this transform (no latency win),
but multiplies are obviously pipelined while divisions are not,
so there's still a big throughput win which we would expect to
show up in typical FP code.
These are the sequences I'm comparing:
divss %xmm2, %xmm0
mulss %xmm1, %xmm0
divss %xmm2, %xmm0
Becomes:
movss LCPI0_0(%rip), %xmm3 ## xmm3 = mem[0],zero,zero,zero
divss %xmm2, %xmm3
mulss %xmm3, %xmm0
mulss %xmm1, %xmm0
mulss %xmm3, %xmm0
[Ignore for the moment that we don't optimize the chain of 3 multiplies
into 2 independent fmuls followed by 1 dependent fmul...this is the DAG
version of: https://llvm.org/bugs/show_bug.cgi?id=21768 ...if we fix that,
then the transform becomes even more profitable on all targets.]
Differential Revision: http://reviews.llvm.org/D8941
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235012
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Chandler Carruth [Wed, 15 Apr 2015 13:39:42 +0000 (13:39 +0000)]
[MBP] Spell the conditions the same way through out this if statement.
NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235009
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Chandler Carruth [Wed, 15 Apr 2015 13:26:41 +0000 (13:26 +0000)]
[MBP] Sink a comment into the if block to which it pertains. This makes
the content of the comment make much more sense.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235007
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Chandler Carruth [Wed, 15 Apr 2015 13:19:54 +0000 (13:19 +0000)]
[MBP] Fix a really misleading typo in a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235006
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Rafael Espindola [Wed, 15 Apr 2015 13:07:47 +0000 (13:07 +0000)]
Write section and section table entries in the same order.
We had two different orders, which has no value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235004
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Daniel Sanders [Wed, 15 Apr 2015 12:51:28 +0000 (12:51 +0000)]
[msp430] Only support the 'm' inline assembly memory constraint. NFC.
Summary:
MSP430 doesn't seem to have any additional constraints. Therefore remove
the target hook.
No functional change intended.
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8208
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235003
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Yaron Keren [Wed, 15 Apr 2015 11:27:32 +0000 (11:27 +0000)]
Clarify that Twine::toVector *appends* the Twine to the given SmallString.
That's the way it works now, since toVector does not clear the given
SmallString before printing to it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235000
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Filipe Cabecinhas [Wed, 15 Apr 2015 11:10:17 +0000 (11:10 +0000)]
Revert "Verify sizes when trying to read a VBR"
This reverts r234984 since it seems to break some bots (most of them
seemed arm*-selfhost).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234998
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Toma Tabacu [Wed, 15 Apr 2015 10:48:56 +0000 (10:48 +0000)]
[mips] [IAS] Refactor the function which checks for the availability of AT. NFC.
Summary:
Refactor MipsAsmParser::getATReg to return an internal register number instead of a register index.
Also change all the int's to unsigned, seeing as the current AT register index is stored as an unsigned in MipsAssemblerOptions.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8478
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234996
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Filipe Cabecinhas [Wed, 15 Apr 2015 08:48:08 +0000 (08:48 +0000)]
Verify sizes when trying to read a VBR
Also added an assert to ReadVBR64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234984
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Yaron Keren [Wed, 15 Apr 2015 07:45:52 +0000 (07:45 +0000)]
Fix lib\support\Windows/TimeValue.inc(48): warning C4189:
'Error' : local variable is initialized but not referenced.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234982
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Daniel Jasper [Wed, 15 Apr 2015 06:24:07 +0000 (06:24 +0000)]
Re-apply r234898 and fix tests.
This commit makes LLVM not estimate branch probabilities when doing a
single bit bitmask tests.
The code that originally made me discover this is:
if ((a & 0x1) == 0x1) {
..
}
In this case we don't actually have any branch probability information
and should not assume to have any. LLVM transforms this into:
%and = and i32 %a, 1
%tobool = icmp eq i32 %and, 0
So, in this case, the result of a bitwise and is compared against 0,
but nevertheless, we should not assume to have probability
information.
CodeGen/ARM/2013-10-11-select-stalls.ll started failing because the
changed probabilities changed the results of
ARMBaseInstrInfo::isProfitableToIfCvt() and led to an Ifcvt of the
diamond in the test. AFAICT, the test was never meant to test this and
thus changing the test input slightly to not change the probabilities
seems like the best way to preserve the meaning of the test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234979
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Lang Hames [Wed, 15 Apr 2015 04:46:01 +0000 (04:46 +0000)]
[RuntimeDyld] Add casts to make delta computation 64-bit.
Hopefully this will fix the i686/msvc build failure described at:
http://bb.pgr.jp/builders/ninja-clang-i686-msc18-R/builds/803
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234977
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Lang Hames [Wed, 15 Apr 2015 03:39:22 +0000 (03:39 +0000)]
[RuntimeDyld] Make sure we emit MachO __eh_frame and __gcc_except_tab sections,
even if there are no references to them in the code.
This allows exceptions thrown from JIT'd code to be caught by the JIT itself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234975
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Richard Trieu [Wed, 15 Apr 2015 03:17:49 +0000 (03:17 +0000)]
Change range-based for-loop to use const auto&. No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234974
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Duncan P. N. Exon Smith [Wed, 15 Apr 2015 03:14:06 +0000 (03:14 +0000)]
uselistorder: Remove the global bits
Remove all the global bits to do with preserving use-list order by
moving the `cl::opt`s to the individual tools that want them. There's a
minor functionality change to `libLTO`, in that you can't send in
`-preserve-bc-uselistorder=false`, but making that bit settable (if it's
worth doing) should be through explicit LTO API.
As a drive-by fix, I removed some includes of `UseListOrder.h` that were
made unnecessary by recent commits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234973
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Alexei Starovoitov [Wed, 15 Apr 2015 02:48:57 +0000 (02:48 +0000)]
[bpf] fix build
fix build due to refactoring in DIL/MDL and raw_pwrite_stream
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234971
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Duncan P. N. Exon Smith [Wed, 15 Apr 2015 02:38:06 +0000 (02:38 +0000)]
uselistorder: Pull the bit through PrintModulePass
Now the callers of `PrintModulePass()` (etc.) that care about use-list
order in assembly pass in the flag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234969
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Duncan P. N. Exon Smith [Wed, 15 Apr 2015 02:12:41 +0000 (02:12 +0000)]
uselistorder: Pull the assembly bit up out of the printer
Pull the `-preserve-ll-uselistorder` bit up through all the callers of
`Module::print()`. I converted callers of `operator<<` to
`Module::print()` where necessary to pull the bit through.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234968
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Duncan P. N. Exon Smith [Wed, 15 Apr 2015 01:36:30 +0000 (01:36 +0000)]
uselistorder: Start pulling out -preserve-ll-uselistorder
For consistency, start pulling out `-preserve-ll-uselistorder`. I'll
drop the global state for both eventually. This pulls it up to
`Module::print()` (but not past there).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234966
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Richard Trieu [Wed, 15 Apr 2015 01:21:15 +0000 (01:21 +0000)]
Change range-based for-loops to be -Wrange-loop-analysis clean.
No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234963
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Duncan P. N. Exon Smith [Wed, 15 Apr 2015 00:34:24 +0000 (00:34 +0000)]
uselistorder: Pull bit through BitcodeWriterPass
Now the callers of `BitcodeWriterPass` decide whether or not to preserve
bitcode use-list order.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234959
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Duncan P. N. Exon Smith [Wed, 15 Apr 2015 00:13:51 +0000 (00:13 +0000)]
Fix build error from r234957
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234958
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Duncan P. N. Exon Smith [Wed, 15 Apr 2015 00:10:50 +0000 (00:10 +0000)]
uselistorder: Pull the bit through WriteToBitcodFile()
Change the callers of `WriteToBitcodeFile()` to pass `true` or
`shouldPreserveBitcodeUseListOrder()` explicitly. I left the callers
that want to send `false` alone.
I'll keep pushing the bit higher until hopefully I can delete the global
`cl::opt` entirely.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234957
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Duncan P. N. Exon Smith [Tue, 14 Apr 2015 23:45:11 +0000 (23:45 +0000)]
uselistorder: Thread bit through ValueEnumerator
Canonicalize access to whether to preserve use-list order in bitcode on
a `bool` stored in `ValueEnumerator`. Next step, expose this as a
`bool` through `WriteBitcodeToFile()`.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234956
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Rafael Espindola [Tue, 14 Apr 2015 22:54:16 +0000 (22:54 +0000)]
Use the ability to pwrite to simplify the ELF writer.
Now we don't have to do 2 synchronized passes to compute offsets and then
write the file.
This also includes a fix for the corner case of seeking in /dev/null. It
is not an error, but on some systems (Linux) the returned offset is
always 0. An error is signaled by returning -1. This is checked by
the existing tests now that "clang -o /dev/null ..." seeks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234952
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Rafael Espindola [Tue, 14 Apr 2015 22:14:34 +0000 (22:14 +0000)]
Use raw_pwrite_stream in the object writer/streamer.
The ELF object writer will take advantage of that in the next commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234950
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Reid Kleckner [Tue, 14 Apr 2015 21:42:36 +0000 (21:42 +0000)]
[WinEH] Avoid emitting xdata tables twice for cleanups
Since adding invokes of llvm.donothing to cleanups, we come here now,
and trivial EH cleanup usage from clang fails to compile.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234948
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Ed Maste [Tue, 14 Apr 2015 20:52:58 +0000 (20:52 +0000)]
Correct 'teh' and other typos / repeated words.
Patch by Eitan Adler.
Differential Revision: http://reviews.llvm.org/D8514
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234939
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Reid Kleckner [Tue, 14 Apr 2015 20:38:14 +0000 (20:38 +0000)]
[Inliner] Don't inline functions with frameescape calls
Inlining such intrinsics is very difficult, since you need to
simultaneously transform many calls to llvm.framerecover and potentially
duplicate the functions containing them. Normally this intrinsic isn't
added until EH preparation, which is part of the backend pass pipeline
after inlining. However, if it were to get fed through the inliner,
this change will ensure that it doesn't break the code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234937
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Daniel Berlin [Tue, 14 Apr 2015 19:49:26 +0000 (19:49 +0000)]
Only recalculate DFS Numbers if invalid. Invalidate DFS numbers on reset. Add unit test to verify recalculation
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234933
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Daniel Berlin [Tue, 14 Apr 2015 19:09:16 +0000 (19:09 +0000)]
Make updateDFSNumbers API public
Summary:
There are a number of passes that could be sped up by using dominator tree DFS numbers to order or compare things across multiple bbs
(MemorySSA, MergedLoadStoreMotion, EarlyCSE, Sinking, GVN, NewGVN, for starters :P).
For example, GVN/CSE elimination can be done with a simple stack/etc (instead of full-on scoped hash table or repeated leader set walks)
if the DFS pair is stored next to leaders.
The dominator tree keeps them, and the DOM tree nodes expose them as public, but you have no guarantee they are up to date (and in fact,
if you split blocks or whatever during your pass, they definitely won't be)
This means passes either have to compute their own versions[1], or make 32 queries, or ....
Rather than try to hide this, i just made the API public, and make it do nothing if the numbers are already valid.
[1] Which we want as a non-recursive walk, which is not pretty, sadly,
because it cannot use the depth first iterators since you don't get called on the way back up. So you either have to do one walk with po_iterator
and one with df_iterator, or write your own non-recursive walk that looks identical to the one in updateDFSNumbers.
Reviewers: chandlerc
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8946
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234930
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Duncan P. N. Exon Smith [Tue, 14 Apr 2015 19:04:03 +0000 (19:04 +0000)]
verify-uselistorder: More outs() and errs(), less dbgs()
Change all the normally relevant output in `verify-uselistorder` from
using `dbgs()` to using `outs()` and `errs()`. Now you don't need
`-debug=uselistorder` to figure out what's going on (or at what stage
verification failed, or to get the paths of the left-behind temporary
files). This is a debugging tool, so I put the logging messages on
`outs()` and the error messages on `errs()`.
I also adjusted the output to be less ***loud***. Not sure why I was so
`*`-happy when I first wrote this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234929
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Duncan P. N. Exon Smith [Tue, 14 Apr 2015 18:33:00 +0000 (18:33 +0000)]
IR: Set -preserve-bc-uselistorder=false by default
But keep it on by default in `llvm-as`, `opt`, `bugpoint`, `llvm-link`,
`llvm-extract`, and `LTOCodeGenerator`. Part of PR5680.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234921
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Duncan P. N. Exon Smith [Tue, 14 Apr 2015 18:19:27 +0000 (18:19 +0000)]
IR: Rename 'use-list-order' options to 'uselistorder'
Rename options to be consistent with the name of `verify-uselistorder`,
and update `DEBUG_TYPE` (etc.) to be consistent.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234919
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Daniel Berlin [Tue, 14 Apr 2015 18:14:38 +0000 (18:14 +0000)]
Add ladder graph utility
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234917
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David Blaikie [Tue, 14 Apr 2015 18:08:25 +0000 (18:08 +0000)]
DebugInfo: Pubnames: Do not include variable declarations in pubnames
This causes badness for GDB which expects to find a definition in any
compile_unit that has an entry for the variable in its pubnames.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234915
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David Blaikie [Tue, 14 Apr 2015 17:17:04 +0000 (17:17 +0000)]
Update test case to include the original source code & account for some changes in clang's order of emission
I'd added some stuff to this test case without adding the original
source, which makes updating/adding further stuff rather difficult. So
update it first (& it seems in the interim Clang's changed its output
order a bit, so adjust the CHECK lines to account for that - rather than
hand hacking the IR order which just makes it harder to maintain/change
next time)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234911
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Lang Hames [Tue, 14 Apr 2015 17:13:10 +0000 (17:13 +0000)]
[RuntimeDyld] Make SectionEntry's Name field a std::string.
StringRef is unsafe here, since SectionEntry instances can outlive the
ObjectFile instances they are created from.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234910
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Lang Hames [Tue, 14 Apr 2015 16:58:05 +0000 (16:58 +0000)]
[Orc] Reapply r234815, outputting via stdout instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234908
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Zachary Turner [Tue, 14 Apr 2015 16:57:54 +0000 (16:57 +0000)]
[msvc] Strip /W[0-4] before appending /W4
Certain versions of CMake specify /W3 as part of CMAKE_CXX_FLAGS
by default, before you do anything. Appending /W4 to the end of
this and using the Ninja generator results in
cl : Command line warning D9025 : overriding '/W3' with '/W4'.
It is not possible to suppress this since it is a command line
warning and not a compiler warning, so we must fix the command
line to contain only one value for /Wn.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234907
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Duncan P. N. Exon Smith [Tue, 14 Apr 2015 16:19:44 +0000 (16:19 +0000)]
DebugInfo: Add implicit conversion from DISubprogram to DIScope
As a follow-up to r234850, add an implicit conversion from
`DISubprogram` to `DIScope` to support Kaleidoscope Ch. 8. This also
reverts that band-aid from r234890.
(/me learns *again* to build Kaleidoscope before commit...)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234904
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Rafael Espindola [Tue, 14 Apr 2015 15:56:33 +0000 (15:56 +0000)]
Revert "The code that originally made me discover this is:"
This reverts commit r234898.
CodeGen/ARM/2013-10-11-select-stalls.ll was faling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234903
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Chad Rosier [Tue, 14 Apr 2015 15:52:57 +0000 (15:52 +0000)]
Improve RefreshCallGraph to remove invalid call graph edge.
With commit r219944, InstCombine can now turn a sqrtl into a llvm.fabs.f64.
The call graph edge originally representing the call to sqrtl becomes invalid.
This patch modifies CGPassManager::RefreshCallGraph() to remove the invalid
call graph edge, which can triggers an assert in
CallGraphNode::addCalledFunction().
Phabricator Review: http://reviews.llvm.org/D7705
Patch by Lawrence Hu <lawrence@codeaurora.org>.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234902
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Alexander Kornienko [Tue, 14 Apr 2015 15:32:58 +0000 (15:32 +0000)]
Refactor: Simplify boolean expressions in ARM target
Simplify boolean expressions using `true` and `false` with `clang-tidy`
http://reviews.llvm.org/D8524
Patch by Richard Thomson!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234901
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Krzysztof Parzyszek [Tue, 14 Apr 2015 15:28:42 +0000 (15:28 +0000)]
Change the testcase mtriple to x86_64-unknown-unknown
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234900
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Rafael Espindola [Tue, 14 Apr 2015 15:25:14 +0000 (15:25 +0000)]
Fix MSVC build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234899
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Daniel Jasper [Tue, 14 Apr 2015 15:20:37 +0000 (15:20 +0000)]
The code that originally made me discover this is:
if ((a & 0x1) == 0x1) {
..
}
In this case we don't actually have any branch probability information and
should not assume to have any. LLVM transforms this into:
%and = and i32 %a, 1
%tobool = icmp eq i32 %and, 0
So, in this case, the result of a bitwise and is compared against 0,
but nevertheless, we should not assume to have probability
information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234898
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