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Merged
merged 23 commits into from
Sep 6, 2016
Merged

Kill canonical mangling signature #4617

merged 23 commits into from
Sep 6, 2016

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@slavapestov slavapestov commented Sep 3, 2016 •
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This PR builds upon my previous PRs which removed AllArchetypes, #4451 and #4524.

Now that AllArchetypes is gone, there were a few places the old order of generic requirements in a signature still came up. In particular, we had two ways of building generic signatures:

  • we would first build a "maximal" signature containing all conformance requirements on all associated types nested in our generic parameters
  • we had a second getCanonicalManglingSignature() which dropped requirements that could be inferred from protocol declarations, and also attempted to pick representatives of same-type classes in a more canonical way -- this was used for mangling, and for building substitution lists

This PR merges the additional canonicalization performed by the second step into the first step, so all generic signatures are minimized now, and representatives of same-type classes are always canonical according to a total order among archetypes.

This eliminates some code duplication and also uncovers a few places in the optimizer where we would make assumptions about the order of requirements in a signature. In these places, we would build substitution lists by hand. This PR changes the optimizer to use the new utility methods on GenericSignature where appropriate, which simplifies the code and makes it more robust.

For those following along, here are the next steps, but I can't promise I'll be working on these in any order or time frame:

  • While substitution lists no longer contain conformances for nested types that can be derived from their parent types, they still contain the redundant nested types themselves. The main remaining difficulty here is some issues with how witness thunk emission uses archetypes -- I cleaned this up some to facilitate generic signature canonicalization, but more problems remain.
  • Fixing the previous problem properly requires re-working the ProtocolConformance structures produced by the type checker to use interface type substitutions rather than archetypes.
  • The code for producing a witness thunk's generic signature, as well as the SIL optimizer code for handling the abstraction change from call-site substitutions to method substitutions, have a similar structure and could be factored out into a SubstitutedGenericSignature structure. This might simplify some logic in IRGen for emitting metadata sources for protocol methods too.
  • AbstractTypeParamDecl::getArchetype() is still there, but it's on its way out.
  • PolymorphicFunctionType will go soon, and in the longer term, non-interface types in ValueDecls.
  • Once ValueDecls no longer have archetypes appearing in their signatures, AssociatedTypeType can go.
  • Another benefit of moving ValueDecls to interface types completely is that we can stop serializing archetypes and GenericEnvironments in the AST.
  • SIL function bodies will still reference archetypes, but we can serialize archetypes in SIL function bodies by mapping them to interface types and serializing those, and then building a brand new GenericEnvironment after deserializing, and mapping them back to archetypes. This will eliminate a bunch of code for serializing GenericEnvironments and archetypes.
  • We don't really need to serialize GenericParamList either. It comes up in a few places in the AST printer and code completion, but we might be able to get away with just printing the generic signature instead, assuming enough sugar is retained. All other usages can be converted to look at GenericSignature::getInnermostGenericParams() instead.

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swift-ci commented Sep 3, 2016

Build failed
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@slavapestov slavapestov force-pushed the kill-canonical-mangling-signature branch from e1d7986 to 4565dc1 Compare September 4, 2016 09:40
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@slavapestov slavapestov force-pushed the kill-canonical-mangling-signature branch from 4565dc1 to 9a8fc96 Compare September 4, 2016 10:15
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@slavapestov slavapestov force-pushed the kill-canonical-mangling-signature branch from 9a8fc96 to c17c44f Compare September 4, 2016 10:26
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@slavapestov slavapestov force-pushed the kill-canonical-mangling-signature branch from c17c44f to 49528fc Compare September 5, 2016 04:36
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@slavapestov slavapestov force-pushed the kill-canonical-mangling-signature branch 2 times, most recently from ffdb1f8 to 9b51e21 Compare September 5, 2016 08:48
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@slavapestov slavapestov force-pushed the kill-canonical-mangling-signature branch from 9b51e21 to f626819 Compare September 5, 2016 11:17
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SIL Optimizer: More principled substitution remapping in devirtualizer
772cf3a 
When devirtualizing witness method and class method calls, we
transform apply instructions operating on the result of a SIL
witness_method or class_method instruction to direct calls of
a function_ref.

The generic signature of the dynamic call site might not match
the generic signature of the static thunk, so the substitution
list from the dynamic apply instruction cannot be used directly;
instead, we must transform it to a substitution list suitable
for the static thunk.

- With witness methods, the method is called using the protocol
  requirement's signature, <Self : P, ...>, however the
  witness thunk has a generic signature derived from the
  concrete witness.

  For example, the requirement might have a signature
  <Self : P, T>, where the concrete witness thunk might
  have a signature <X, Y>, where the concrete conforming type
  is G<X, Y>.

  At the call site, we substitute Self := G<X', Y'>; however
  to be able to call the witness thunk directly, we need to
  form substitutions X := X' and Y := Y'.

- A similar situation occurs with class methods when the
  dynamically-dispatched call is performed against a derived
  class, but devirtualization actually finds the method on a
  base class of the derived class.

  The base class may have a different number of generic
  parameters than the derived class, either because the
  derived class makes some generic parameters of the base
  class concrete, or if the derived class introduces new
  generic parameters of its own.

In both cases, we need to consider the generic signature of the
dynamic call site (the protocol requirement or the derived
class method) as well as the generic signature of the static
thunk, and carefully remap the substitutions from one form
into another.

Previously the optimizer would implicitly rely on substitutions
being in AllArchetypes order, in particular that concatenating
outer substitutions with inner substitutions makes sense.

This assumption is about to go away, so this patch refactors
the optimizer to use some new abstractions for remapping
substitution lists.
@slavapestov
ArchetypeBuilder: const correctness
890863d
@slavapestov
ArchetypeBuilder: More principled usage of RequirementSource
71cf591 
We used RequirementSources to identify redundant requirements
when building the canonical mangling signature. There were a
few problems with how this worked:

- We used the Inferred requirement source for both requirements
  that were inferred from function parameter and result types
  (for example, T : Hashable in `func foo<T, U>(dict: [T : U])`
  and some completely unrelated things, like same-type
  constraints imposed on nested types by existing same-type
  constraints on the outer types.

- We used the Protocol requirement source for associated type
  requirements on protocols as well as conformance requirements
  on inherited protocols.

- Introducing a new Redundant requirement did not mark existing
  Explicit requirements as Redundant.

None of these were an issue because of how canonical mangling
signature construction works:

- We already started with a canonical signature, so there were
  no Inferred requirements of the first kind (which we *do* want
  to keep here)

- We dropped both Protocol and Redundant requirements, so it
  didn't matter that the distinction here was not sufficiently
  fine-grained

- We never introduced Explicit requirements that would be later
  superceded by a Redundant requirement, because we always
  started with an existing canonical signature where such Explicit
  requirements were already dropped.

However, I want to use the same algorithm for building the
original signature as the canonical mangling signature, so this
patch introduces these changes:

- The Inferred source is now only used for inferred requirements of
  the first kind; the second kind are now Redundant

- The Protocol source is now only used for associated type
  requirements; inherited protocol conformances are now Redundant

- updateRequirementSource() now does the right thing with
  introduced Redundant requirements

For now, this doesn't change much, but an upcoming patch
refactors ArchetypeBuilder::getGenericSignature() to also
use enumerateRequirements(), except dropping Redundant
requirements only, and not Protocol.
@slavapestov
ArchetypeBuilder: Sort requirements in enumerateRequirements()
f19192d 
Move the sorting algorithm from construction of the canonical mangling
signature to requirement enumeration.

This also changes how same-type constraints pick representatives, using
the more canonical total order.
@slavapestov
ArchetypeBuilder: use enumerateRequirements() in getGenericSignature()
7a7af62 
Instead of walking over PotentialArchetypes representatives directly
and using a separate list to record same-type constraints, just use
enumerateRequirements() and check the RequirementSource to drop
redundant requirements.

This means getGenericSignature() and getCanonicalManglingSignature()
can share the same logic for collecting requirements; the only
differences are the following:

- both drop requirements from Redundant sources, but mangling
  signatures also drop requirements from Protocol sources

- mangling signatures also canonicalize the types appearing in the
  final requirement
@slavapestov
Sema: Improve checking of associated type superclass constraints
9771ec8 
When checking a conformance of a concrete type to a protocol, we
effectively checked the associated types twice -- once when
deriving them, and another time at the end, where we performed
a substitution of the protocol 'Self' type to the concrete type.

The latter checked superclass constraints, while the former did not.

However, this trick no longer works with minimized generic
signatures, because <P : Self> no longer has redundant requirements
for the associated types of 'P'.

Instead, check superclass constraints at the same time as checking
conformances.
@slavapestov
SIL: Prepare parser for removal of getCanonicalManglingSignature()
15fd3da
@slavapestov
AST: Nuke GenericSignature::getCanonicalManglingSignature()
3b17217 
Now that the previous patches have shaken out implicit assumptions
about the order of generic requirements and substitutions, we can
make a more radical change, dropping redundant protocol requirements
when building the original generic signature.

This means that the canonical ordering and minimization that we
used to only perform when building the mangling signature is done
all of the time, and hence getCanonicalManglingSignature() can go
away.

Usages now either call getCanonicalSignature(), or operate on the
original signature directly.
@slavapestov
AST: Fix regression with reference-dependencies-members test
38e58b2 
When the call to checkGenericArguments() was removed from
ConformanceChecker::checkConformance(), we stopped recording
a dependency on the extended nominal type when checking an
extension that adds a protocol conformance to the type.

Fix this in a hacky way by recording an explicit dependency
in the same place where we used to call checkGenericArguments().

Surely this is not the best place for it though, so this
should be revisited since I'm pretty sure the old behavior
was an accident.
@slavapestov
Sema: Eagerly mark associated type conformances as used
dc49f82 
This might look like a regression in lazyness at first sight,
however this was previously being done implicitly by checking
the 'Self := Adoptee' substitution against the protocol's
generic signature, back when generic signatures had expanded
requirements for protocol associated types.

When generic signature minimization was switched on, this was
no longer being done, as a result it was possible to construct
code that would fail in the specializer with a missing
conformance.
@slavapestov
Sema: Remove unused parameter from ConformanceChecker::recordTypeWitn…
db4464b 
…ess()
@slavapestov
Sema: Clean up hack forcing use of NSError-related conformances
2149061
@slavapestov
AST: Add some handy assertions to GenericSignature
6e77f62
@slavapestov
Sema: Add a couple of comments
af56a01
@slavapestov
Resolve some crashers
0c30979
@slavapestov slavapestov force-pushed the kill-canonical-mangling-signature branch 2 times, most recently from b29ec60 to 0c30979 Compare September 6, 2016 18:53
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swift-ci commented Sep 6, 2016

Build comment file:

Optimized (O)

Regression (0)

Improvement (1)

TEST OLD_MIN NEW_MIN DELTA (%) SPEEDUP
SetIsSubsetOf 554 517 -6.7% 1.07x(?)

No Changes (135)

TEST OLD_MIN NEW_MIN DELTA (%) SPEEDUP
ObjectiveCBridgeStubToNSDate 13453 12847 -4.5% 1.05x(?)
ObjectiveCBridgeFromNSSetAnyObjectToStringForced 127036 120595 -5.1% 1.05x
ObjectiveCBridgeStubNSDateMutationRef 12450 12117 -2.7% 1.03x(?)
ObjectiveCBridgeFromNSArrayAnyObjectToString 120248 117357 -2.4% 1.02x(?)
ObjectiveCBridgeStubToArrayOfNSString 29648 28980 -2.2% 1.02x(?)
NSDictionaryCastToSwift 13249 12971 -2.1% 1.02x(?)
135 3220590 3181420 -1.2% 1.01x
ObjectiveCBridgeFromNSArrayAnyObjectForced 6107 6067 -0.7% 1.01x(?)
SortLettersInPlace 1000 995 -0.5% 1.01x(?)
StringInterpolation 11031 10939 -0.8% 1.01x(?)
ObjectAllocation 154 153 -0.7% 1.01x(?)
ObjectiveCBridgeStubToNSDateRef 3477 3456 -0.6% 1.01x(?)
ObjectiveCBridgeFromNSArrayAnyObject 77800 77207 -0.8% 1.01x
ObjectiveCBridgeStubDataAppend 2979 2955 -0.8% 1.01x
DictionaryRemove 5143 5107 -0.7% 1.01x(?)
ObjectiveCBridgeStubFromArrayOfNSString 63116 62352 -1.2% 1.01x(?)
TwoSum 1918 1906 -0.6% 1.01x
ArraySubscript 1432 1432 +0.0% 1.00x
ObjectiveCBridgeToNSString 1076 1077 +0.1% 1.00x
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StackPromo 19835 19845 +0.1% 1.00x(?)
ObjectiveCBridgeFromNSDictionaryAnyObject 256166 255078 -0.4% 1.00x(?)
RecursiveOwnedParameter 1938 1938 +0.0% 1.00x
ObjectiveCBridgeStubToNSString 1289 1285 -0.3% 1.00x
ObjectiveCBridgeFromNSDictionaryAnyObjectToString 232993 232489 -0.2% 1.00x(?)
ClassArrayGetter 12 12 +0.0% 1.00x
Array2D 1979 1975 -0.2% 1.00x(?)
Histogram 681 682 +0.1% 1.00x
SortStrings 1752 1751 -0.1% 1.00x(?)
ObjectiveCBridgeFromNSDictionaryAnyObjectForced 5110 5101 -0.2% 1.00x(?)
ObjectiveCBridgeStubFromNSDateRef 3749 3743 -0.2% 1.00x
MonteCarloPi 45227 45240 +0.0% 1.00x
StringWithCString 153748 154086 +0.2% 1.00x(?)
ObjectiveCBridgeFromNSStringForced 2597 2602 +0.2% 1.00x(?)
Prims 789 791 +0.2% 1.00x(?)
DictionarySwap 787 787 +0.0% 1.00x
PopFrontArray 1133 1132 -0.1% 1.00x(?)
ArrayOfGenericPOD 221 220 -0.5% 1.00x
Dictionary3OfObjects 896 898 +0.2% 1.00x(?)
RangeAssignment 310 310 +0.0% 1.00x
ByteSwap 1 1 +0.0% 1.00x
SuperChars 215292 215025 -0.1% 1.00x(?)
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ObjectiveCBridgeStubFromNSString 780 781 +0.1% 1.00x(?)
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ObjectiveCBridgeFromNSSetAnyObject 309597 310318 +0.2% 1.00x(?)
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Dictionary3 542 541 -0.2% 1.00x(?)
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SetIntersect_OfObjects 2481 2488 +0.3% 1.00x(?)
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ArrayOfRef 3521 3534 +0.4% 1.00x(?)
ObjectiveCBridgeToNSSet 16381 16422 +0.2% 1.00x(?)
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NopDeinit 39675 39692 +0.0% 1.00x(?)
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SetExclusiveOr 4040 4048 +0.2% 1.00x(?)
ObjectiveCBridgeStubNSDateRefAccess 309 308 -0.3% 1.00x
StrToInt 4988 4994 +0.1% 1.00x(?)
ArrayOfGenericRef 3608 3619 +0.3% 1.00x(?)
StringHasSuffix 678 678 +0.0% 1.00x
Phonebook 7160 7163 +0.0% 1.00x(?)
ObjectiveCBridgeStubDateAccess 182 182 +0.0% 1.00x
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SetExclusiveOr_OfObjects 8682 8655 -0.3% 1.00x(?)
MonteCarloE 10565 10570 +0.1% 1.00x(?)
SetUnion_OfObjects 7293 7317 +0.3% 1.00x(?)
StringHasSuffixUnicode 63823 63827 +0.0% 1.00x(?)
HashTest 1740 1735 -0.3% 1.00x(?)
SetIsSubsetOf_OfObjects 511 511 +0.0% 1.00x
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StringHasPrefixUnicode 14174 14199 +0.2% 1.00x
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RGBHistogramOfObjects 22463 22402 -0.3% 1.00x(?)
NSStringConversion 821 822 +0.1% 1.00x(?)
RGBHistogram 3142 3136 -0.2% 1.00x(?)
ObjectiveCBridgeFromNSSetAnyObjectForced 4319 4331 +0.3% 1.00x(?)
ArrayValueProp4 6 6 +0.0% 1.00x
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Chars 557 557 +0.0% 1.00x
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ErrorHandling 2893 2928 +1.2% 0.99x(?)
ObjectiveCBridgeStubFromNSStringRef 131 132 +0.8% 0.99x(?)
ProtocolDispatch2 160 161 +0.6% 0.99x(?)
StrComplexWalk 2918 2944 +0.9% 0.99x(?)
ObjectiveCBridgeStubURLAppendPathRef 236087 239162 +1.3% 0.99x(?)
ObjectiveCBridgeToNSArray 29596 29908 +1.1% 0.99x(?)
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ObjectiveCBridgeFromNSSetAnyObjectToString 157563 158606 +0.7% 0.99x(?)
ArrayInClass 85 86 +1.2% 0.99x(?)
ObjectiveCBridgeToNSDictionary 17057 17191 +0.8% 0.99x(?)
ObjectiveCBridgeStubFromNSDate 3567 3605 +1.1% 0.99x(?)
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StaticArray 2870 2921 +1.8% 0.98x(?)
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Dictionary2OfObjects 3456 3522 +1.9% 0.98x
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**Unoptimized (Onone)**

Regression (1)

TEST OLD_MIN NEW_MIN DELTA (%) SPEEDUP
DictionarySwap 10640 11705 +10.0% 0.91x

Improvement (1)

TEST OLD_MIN NEW_MIN DELTA (%) SPEEDUP
TypeFlood 241 206 -14.5% 1.17x(?)

No Changes (134)

TEST OLD_MIN NEW_MIN DELTA (%) SPEEDUP
ObjectiveCBridgeFromNSArrayAnyObjectForced 10551 10084 -4.4% 1.05x
ObjectiveCBridgeFromNSArrayAnyObjectToString 126773 121455 -4.2% 1.04x
ObjectiveCBridgeStubNSDateMutationRef 14726 14264 -3.1% 1.03x
StringBuilder 2797 2717 -2.9% 1.03x(?)
ObjectiveCBridgeFromNSSetAnyObjectToString 178441 175802 -1.5% 1.02x(?)
StringWalk 22314 21816 -2.2% 1.02x(?)
135 5922320 5869546 -0.9% 1.01x
StringInterpolation 15572 15479 -0.6% 1.01x(?)
ObjectiveCBridgeStubFromNSStringRef 169 168 -0.6% 1.01x(?)
ObjectAllocation 554 550 -0.7% 1.01x(?)
ObjectiveCBridgeFromNSSetAnyObject 315060 313482 -0.5% 1.01x(?)
Walsh 13207 13137 -0.5% 1.01x
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ObjectiveCBridgeFromNSDictionaryAnyObjectToStringForced 156014 154299 -1.1% 1.01x(?)
SetIsSubsetOf 3300 3264 -1.1% 1.01x(?)
DeadArray 121553 120414 -0.9% 1.01x(?)
ArraySubscript 5741 5758 +0.3% 1.00x(?)
ObjectiveCBridgeToNSString 1108 1108 +0.0% 1.00x
DictionarySwapOfObjects 25647 25651 +0.0% 1.00x(?)
StackPromo 131041 131366 +0.2% 1.00x(?)
RecursiveOwnedParameter 10746 10721 -0.2% 1.00x
Integrate 361 361 +0.0% 1.00x
ObjectiveCBridgeFromNSDictionaryAnyObjectToString 235580 235897 +0.1% 1.00x(?)
ClassArrayGetter 1334 1333 -0.1% 1.00x(?)
Array2D 844265 844300 +0.0% 1.00x(?)
Histogram 13621 13680 +0.4% 1.00x(?)
SortStrings 2710 2710 +0.0% 1.00x
DictionaryBridge 4073 4091 +0.4% 1.00x(?)
ObjectiveCBridgeFromNSDictionaryAnyObjectForced 7535 7527 -0.1% 1.00x(?)
ObjectiveCBridgeStubFromNSDateRef 4050 4045 -0.1% 1.00x(?)
ArrayOfGenericPOD 3423 3419 -0.1% 1.00x
StringWithCString 155535 155572 +0.0% 1.00x(?)
ObjectiveCBridgeFromNSStringForced 3038 3038 +0.0% 1.00x
Prims 15184 15171 -0.1% 1.00x(?)
SortLettersInPlace 2597 2592 -0.2% 1.00x(?)
ObjectiveCBridgeFromNSDictionaryAnyObject 261337 262313 +0.4% 1.00x(?)
Dictionary3OfObjects 2700 2702 +0.1% 1.00x(?)
RangeAssignment 23877 23863 -0.1% 1.00x(?)
StringHasPrefix 1654 1652 -0.1% 1.00x(?)
ByteSwap 10 10 +0.0% 1.00x
SuperChars 265187 265012 -0.1% 1.00x(?)
XorLoop 19658 19656 -0.0% 1.00x(?)
ObjectiveCBridgeStubToNSString 1353 1352 -0.1% 1.00x(?)
ObjectiveCBridgeStubFromNSString 819 815 -0.5% 1.00x(?)
StaticArray 27229 27230 +0.0% 1.00x(?)
ProtocolDispatch 6138 6135 -0.1% 1.00x(?)
ArrayLiteral 1114 1113 -0.1% 1.00x(?)
ProtocolDispatch2 441 440 -0.2% 1.00x(?)
Dictionary3 2050 2050 +0.0% 1.00x
StrComplexWalk 7610 7611 +0.0% 1.00x(?)
SetIntersect_OfObjects 19898 19908 +0.1% 1.00x(?)
Join 1500 1499 -0.1% 1.00x
ArrayOfRef 9334 9341 +0.1% 1.00x(?)
ObjectiveCBridgeStubURLAppendPathRef 242521 243207 +0.3% 1.00x(?)
ObjectiveCBridgeStubDateMutation 434 433 -0.2% 1.00x
NSError 685 684 -0.1% 1.00x(?)
PopFrontArrayGeneric 9690 9686 -0.0% 1.00x(?)
PopFrontUnsafePointer 242742 242605 -0.1% 1.00x(?)
StringEqualPointerComparison 9681 9694 +0.1% 1.00x(?)
CaptureProp 119187 119196 +0.0% 1.00x(?)
PolymorphicCalls 1132 1132 +0.0% 1.00x
RC4 9076 9074 -0.0% 1.00x(?)
ObjectiveCBridgeStubToNSStringRef 163 163 +0.0% 1.00x
Calculator 928 927 -0.1% 1.00x(?)
MapReduce 46934 46941 +0.0% 1.00x(?)
AngryPhonebook 3027 3035 +0.3% 1.00x(?)
IterateData 10649 10645 -0.0% 1.00x(?)
Hanoi 20067 20136 +0.3% 1.00x
DictionaryRemoveOfObjects 62781 62697 -0.1% 1.00x(?)
UTF8Decode 45168 45144 -0.1% 1.00x(?)
SortStringsUnicode 9323 9323 +0.0% 1.00x
Dictionary 2679 2678 -0.0% 1.00x(?)
NopDeinit 62773 62751 -0.0% 1.00x(?)
ObjectiveCBridgeStubToArrayOfNSString 29527 29637 +0.4% 1.00x
SetIntersect 20221 20228 +0.0% 1.00x(?)
ObjectiveCBridgeStubDataAppend 3345 3331 -0.4% 1.00x(?)
RGBHistogramOfObjects 103468 103196 -0.3% 1.00x(?)
ObjectiveCBridgeStubNSDateRefAccess 1202 1200 -0.2% 1.00x(?)
StrToInt 5317 5317 +0.0% 1.00x
ArrayInClass 3867 3869 +0.1% 1.00x(?)
ArrayOfGenericRef 9980 10002 +0.2% 1.00x(?)
StringHasSuffix 1703 1703 +0.0% 1.00x
ObjectiveCBridgeStubDateAccess 1095 1095 +0.0% 1.00x
Sim2DArray 14632 14628 -0.0% 1.00x(?)
SetExclusiveOr_OfObjects 66123 66315 +0.3% 1.00x(?)
MonteCarloPi 53573 53511 -0.1% 1.00x
MonteCarloE 112347 112454 +0.1% 1.00x(?)
SetUnion_OfObjects 49353 49397 +0.1% 1.00x(?)
StringHasSuffixUnicode 64514 64407 -0.2% 1.00x(?)
HashTest 5357 5345 -0.2% 1.00x
SetIsSubsetOf_OfObjects 3081 3083 +0.1% 1.00x(?)
ArrayAppend 3429 3435 +0.2% 1.00x
DictionaryRemove 30582 30653 +0.2% 1.00x(?)
StringHasPrefixUnicode 15802 15798 -0.0% 1.00x(?)
LinkedList 27627 27581 -0.2% 1.00x(?)
ObjectiveCBridgeFromNSSetAnyObjectForced 7442 7423 -0.3% 1.00x(?)
ArrayValueProp4 2682 2684 +0.1% 1.00x(?)
ArrayOfPOD 2392 2391 -0.0% 1.00x
SetUnion 31517 31416 -0.3% 1.00x(?)
Chars 5352 5353 +0.0% 1.00x
ArrayValueProp2 2849 2851 +0.1% 1.00x(?)
BitCount 92 92 +0.0% 1.00x
AnyHashableWithAClass 76831 76764 -0.1% 1.00x(?)
SevenBoom 1520 1518 -0.1% 1.00x(?)
ArrayValueProp 2305 2312 +0.3% 1.00x(?)
ObjectiveCBridgeFromNSString 5062 5081 +0.4% 1.00x
GlobalClass 0 0 +0.0% 1.00x
Memset 20666 20665 -0.0% 1.00x(?)
Dictionary2OfObjects 6852 6854 +0.0% 1.00x(?)
ArrayAppendReserved 3181 3183 +0.1% 1.00x(?)
ArrayValueProp3 2760 2756 -0.1% 1.00x(?)
ObjectiveCBridgeStubFromNSDate 3814 3815 +0.0% 1.00x
PopFrontArray 24847 25127 +1.1% 0.99x(?)
ErrorHandling 3724 3772 +1.3% 0.99x(?)
Dictionary2 5018 5051 +0.7% 0.99x
ObjectiveCBridgeToNSSet 16774 16939 +1.0% 0.99x(?)
ObjectiveCBridgeToNSArray 30229 30524 +1.0% 0.99x(?)
DictionaryOfObjects 5528 5577 +0.9% 0.99x(?)
ObjectiveCBridgeStubToNSDateRef 3330 3357 +0.8% 0.99x
OpenClose 449 455 +1.3% 0.99x(?)
ObjectiveCBridgeFromNSArrayAnyObject 80923 81969 +1.3% 0.99x(?)
SetExclusiveOr 46041 46390 +0.8% 0.99x(?)
Phonebook 62912 63247 +0.5% 0.99x(?)
ObjectiveCBridgeFromNSSetAnyObjectToStringForced 133393 134963 +1.2% 0.99x(?)
NSStringConversion 2990 3011 +0.7% 0.99x(?)
RGBHistogram 51766 52134 +0.7% 0.99x(?)
ObjectiveCBridgeStubFromArrayOfNSString 61087 61522 +0.7% 0.99x(?)
TwoSum 9263 9348 +0.9% 0.99x
ObjectiveCBridgeStubURLAppendPath 241035 245508 +1.9% 0.98x(?)
ObjectiveCBridgeToNSDictionary 17053 17353 +1.8% 0.98x(?)
ObjectiveCBridgeFromNSArrayAnyObjectToStringForced 93250 94716 +1.6% 0.98x(?)
ObjectiveCBridgeStubNSDataAppend 2758 2803 +1.6% 0.98x
ObjectiveCBridgeStubToNSDate 13277 13795 +3.9% 0.96x(?)
NSDictionaryCastToSwift 14152 14725 +4.0% 0.96x(?)
**Hardware Overview** Model Name: Mac mini Model Identifier: Macmini7,1 Processor Name: Intel Core i5 Processor Speed: 2.8 GHz Number of Processors: 1 Total Number of Cores: 2 L2 Cache (per Core): 256 KB L3 Cache: 3 MB Memory: 8 GB

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swift-ci commented Sep 6, 2016

Build comment file:

Optimized (O)

Regression (3)

TEST OLD_MIN NEW_MIN DELTA (%) SPEEDUP
StaticArray 2736 2916 +6.6% 0.94x(?)
AnyHashableWithAClass 63869 67697 +6.0% 0.94x
MapReduce 386 411 +6.5% 0.94x(?)

Improvement (5)

TEST OLD_MIN NEW_MIN DELTA (%) SPEEDUP
ObjectiveCBridgeFromNSDictionaryAnyObjectToString 244800 230944 -5.7% 1.06x(?)
NopDeinit 38863 36573 -5.9% 1.06x
StringHasPrefixUnicode 14740 13842 -6.1% 1.06x(?)
ObjectiveCBridgeFromNSStringForced 2918 2676 -8.3% 1.09x
ObjectiveCBridgeFromNSArrayAnyObject 87593 80097 -8.6% 1.09x

No Changes (128)

TEST OLD_MIN NEW_MIN DELTA (%) SPEEDUP
ObjectiveCBridgeFromNSArrayAnyObjectForced 6486 6200 -4.4% 1.05x
ObjectAllocation 157 150 -4.5% 1.05x(?)
ObjectiveCBridgeFromNSSetAnyObjectToString 175308 166456 -5.0% 1.05x(?)
ObjectiveCBridgeFromNSArrayAnyObjectToStringForced 97234 92986 -4.4% 1.05x(?)
ObjectiveCBridgeStubToArrayOfNSString 30563 29291 -4.2% 1.04x
Array2D 2108 2046 -2.9% 1.03x(?)
PopFrontArray 1171 1140 -2.6% 1.03x(?)
StringHasPrefix 652 633 -2.9% 1.03x(?)
Calculator 31 30 -3.2% 1.03x
SetIsSubsetOf 534 518 -3.0% 1.03x(?)
ArrayOfGenericRef 3687 3574 -3.1% 1.03x(?)
Sim2DArray 454 440 -3.1% 1.03x(?)
ObjectiveCBridgeStubNSDateMutationRef 12407 12055 -2.8% 1.03x(?)
SuperChars 217602 212322 -2.4% 1.02x
StringInterpolation 11211 10997 -1.9% 1.02x(?)
StringHasSuffixUnicode 64936 63876 -1.6% 1.02x(?)
ProtocolDispatch2 165 161 -2.4% 1.02x(?)
StrComplexWalk 2980 2926 -1.8% 1.02x
ObjectiveCBridgeStubToNSDateRef 3413 3348 -1.9% 1.02x(?)
PopFrontArrayGeneric 1173 1145 -2.4% 1.02x
SetExclusiveOr 3979 3918 -1.5% 1.02x(?)
ObjectiveCBridgeFromNSSetAnyObjectToStringForced 127432 125069 -1.9% 1.02x
StringBuilder 1318 1291 -2.0% 1.02x(?)
ObjectiveCBridgeStubNSDataAppend 2550 2499 -2.0% 1.02x(?)
StringHasSuffix 685 671 -2.0% 1.02x(?)
Dictionary2OfObjects 3516 3431 -2.4% 1.02x(?)
135 3447259 3403256 -1.3% 1.01x
SortStrings 1730 1719 -0.6% 1.01x(?)
ObjectiveCBridgeStubFromNSDateRef 3756 3725 -0.8% 1.01x(?)
ProtocolDispatch 3095 3060 -1.1% 1.01x(?)
ObjectiveCBridgeFromNSSetAnyObject 315377 311086 -1.4% 1.01x(?)
Dictionary3 538 535 -0.6% 1.01x(?)
Dictionary2 2090 2078 -0.6% 1.01x(?)
ArrayOfRef 3573 3546 -0.8% 1.01x(?)
ObjectiveCBridgeStubURLAppendPathRef 257623 254110 -1.4% 1.01x(?)
ArrayAppend 758 747 -1.4% 1.01x
DictionaryRemoveOfObjects 20428 20263 -0.8% 1.01x(?)
UTF8Decode 318 316 -0.6% 1.01x(?)
Dictionary 797 791 -0.8% 1.01x(?)
MonteCarloPi 43209 42805 -0.9% 1.01x(?)
MonteCarloE 10126 10073 -0.5% 1.01x(?)
ObjectiveCBridgeFromNSSetAnyObjectForced 4387 4354 -0.8% 1.01x(?)
Chars 573 568 -0.9% 1.01x
StringWalk 5683 5645 -0.7% 1.01x(?)
ObjectiveCBridgeToNSString 1084 1089 +0.5% 1.00x(?)
StackPromo 19486 19449 -0.2% 1.00x(?)
RecursiveOwnedParameter 1846 1852 +0.3% 1.00x(?)
ClassArrayGetter 12 12 +0.0% 1.00x
OpenClose 51 51 +0.0% 1.00x
StringWithCString 146664 146869 +0.1% 1.00x(?)
DictionarySwap 812 812 +0.0% 1.00x
RangeAssignment 321 320 -0.3% 1.00x(?)
ByteSwap 1 1 +0.0% 1.00x
XorLoop 362 362 +0.0% 1.00x
ObjectiveCBridgeStubFromNSString 800 802 +0.2% 1.00x(?)
TypeFlood 0 0 +0.0% 1.00x
ArrayLiteral 1031 1028 -0.3% 1.00x(?)
SetIntersect_OfObjects 2314 2323 +0.4% 1.00x(?)
NSError 334 333 -0.3% 1.00x(?)
DictionaryOfObjects 2367 2365 -0.1% 1.00x(?)
PopFrontUnsafePointer 9031 9033 +0.0% 1.00x(?)
StringEqualPointerComparison 7581 7546 -0.5% 1.00x(?)
PolymorphicCalls 14 14 +0.0% 1.00x
IterateData 2539 2543 +0.2% 1.00x(?)
ArrayOfGenericPOD 208 208 +0.0% 1.00x
ObjectiveCBridgeStubDataAppend 3016 3026 +0.3% 1.00x(?)
RGBHistogramOfObjects 21969 22002 +0.1% 1.00x(?)
StrToInt 5073 5067 -0.1% 1.00x(?)
ArrayInClass 89 89 +0.0% 1.00x
ObjectiveCBridgeStubDateAccess 182 182 +0.0% 1.00x
SetExclusiveOr_OfObjects 8426 8420 -0.1% 1.00x(?)
SetUnion_OfObjects 7099 7068 -0.4% 1.00x(?)
GlobalClass 0 0 +0.0% 1.00x
SetIsSubsetOf_OfObjects 502 504 +0.4% 1.00x
ObjectiveCBridgeToNSSet 16722 16778 +0.3% 1.00x(?)
LinkedList 6853 6857 +0.1% 1.00x(?)
ArrayValueProp4 5 5 +0.0% 1.00x
ArrayOfPOD 172 172 +0.0% 1.00x
BitCount 1 1 +0.0% 1.00x
AngryPhonebook 2923 2910 -0.4% 1.00x(?)
ArrayValueProp 5 5 +0.0% 1.00x
RC4 257 256 -0.4% 1.00x(?)
Memset 222 222 +0.0% 1.00x
ArrayAppendReserved 532 533 +0.2% 1.00x(?)
ArrayValueProp2 5 5 +0.0% 1.00x
ArrayValueProp3 5 5 +0.0% 1.00x
ArraySubscript 1385 1394 +0.7% 0.99x(?)
DictionarySwapOfObjects 6761 6836 +1.1% 0.99x(?)
ObjectiveCBridgeFromNSDictionaryAnyObject 256363 260071 +1.4% 0.99x(?)
Integrate 249 252 +1.2% 0.99x(?)
Histogram 667 674 +1.1% 0.99x(?)
ObjectiveCBridgeFromNSDictionaryAnyObjectForced 5121 5180 +1.1% 0.99x(?)
Prims 769 773 +0.5% 0.99x(?)
SortLettersInPlace 974 980 +0.6% 0.99x(?)
Dictionary3OfObjects 882 893 +1.2% 0.99x(?)
ObjectiveCBridgeStubToNSString 1259 1278 +1.5% 0.99x(?)
HashTest 1720 1737 +1.0% 0.99x(?)
ObjectiveCBridgeStubDateMutation 272 274 +0.7% 0.99x(?)
ObjectiveCBridgeStubToNSStringRef 119 120 +0.8% 0.99x(?)
Hanoi 3392 3426 +1.0% 0.99x(?)
SortStringsUnicode 8259 8341 +1.0% 0.99x(?)
ObjectiveCBridgeStubNSDateRefAccess 313 317 +1.3% 0.99x(?)
Walsh 336 338 +0.6% 0.99x(?)
RGBHistogram 3154 3184 +0.9% 0.99x(?)
SetUnion 2736 2751 +0.6% 0.99x(?)
DeadArray 185 187 +1.1% 0.99x
TwoSum 1899 1924 +1.3% 0.99x(?)
DictionaryBridge 4038 4125 +2.1% 0.98x(?)
Join 454 464 +2.2% 0.98x(?)
ObjectiveCBridgeStubFromNSStringRef 130 133 +2.3% 0.98x(?)
CaptureProp 4416 4529 +2.6% 0.98x(?)
DictionaryLiteral 4430 4506 +1.7% 0.98x(?)
ObjectiveCBridgeFromNSString 1869 1905 +1.9% 0.98x(?)
NSStringConversion 814 828 +1.7% 0.98x(?)
SevenBoom 1344 1366 +1.6% 0.98x(?)
ObjectiveCBridgeStubToNSDate 13306 13678 +2.8% 0.97x(?)
ErrorHandling 2865 2947 +2.9% 0.97x(?)
ObjectiveCBridgeToNSArray 30540 31437 +2.9% 0.97x(?)
ObjectiveCBridgeStubURLAppendPath 247505 254523 +2.8% 0.97x(?)
Phonebook 6926 7131 +3.0% 0.97x(?)
DictionaryRemove 5228 5376 +2.8% 0.97x(?)
ObjectiveCBridgeStubFromArrayOfNSString 61055 63113 +3.4% 0.97x(?)
ObjectiveCBridgeStubFromNSDate 3581 3706 +3.5% 0.97x(?)
NSDictionaryCastToSwift 13125 13673 +4.2% 0.96x(?)
ObjectiveCBridgeToNSDictionary 17038 17806 +4.5% 0.96x(?)
ObjectiveCBridgeFromNSArrayAnyObjectToString 121758 128670 +5.7% 0.95x(?)
ObjectiveCBridgeFromNSDictionaryAnyObjectToStringForced 155891 163801 +5.1% 0.95x(?)
SetIntersect 1155 1220 +5.6% 0.95x(?)
**Unoptimized (Onone)**

Regression (4)

TEST OLD_MIN NEW_MIN DELTA (%) SPEEDUP
TypeFlood 210 243 +15.7% 0.86x
ObjectiveCBridgeFromNSDictionaryAnyObjectToStringForced 156648 173104 +10.5% 0.90x
ObjectiveCBridgeStubToNSStringRef 160 174 +8.8% 0.92x(?)
PolymorphicCalls 1171 1257 +7.3% 0.93x

Improvement (3)

TEST OLD_MIN NEW_MIN DELTA (%) SPEEDUP
ObjectiveCBridgeFromNSSetAnyObjectForced 8283 7640 -7.8% 1.08x
StringWalk 24836 22887 -7.8% 1.09x(?)
StringHasPrefix 1646 1485 -9.8% 1.11x

No Changes (129)

TEST OLD_MIN NEW_MIN DELTA (%) SPEEDUP
OpenClose 463 441 -4.8% 1.05x
SevenBoom 1602 1532 -4.4% 1.05x(?)
NopDeinit 64498 61927 -4.0% 1.04x(?)
ObjectiveCBridgeStubNSDateRefAccess 1285 1236 -3.8% 1.04x
Array2D 832530 809752 -2.7% 1.03x
ObjectiveCBridgeStubDateMutation 464 452 -2.6% 1.03x
ObjectiveCBridgeStubToArrayOfNSString 30303 29413 -2.9% 1.03x(?)
ObjectiveCBridgeFromNSSetAnyObjectToString 183168 178690 -2.4% 1.03x
BitCount 97 94 -3.1% 1.03x(?)
135 6094443 5967178 -2.1% 1.02x
DictionarySwapOfObjects 25348 24920 -1.7% 1.02x(?)
Prims 14810 14496 -2.1% 1.02x(?)
AnyHashableWithAClass 78236 76826 -1.8% 1.02x(?)
StringHasSuffix 1713 1673 -2.3% 1.02x(?)
ObjectiveCBridgeStubToNSString 1354 1321 -2.4% 1.02x(?)
StaticArray 28287 27736 -1.9% 1.02x(?)
ObjectiveCBridgeToNSArray 30788 30086 -2.3% 1.02x(?)
NSError 684 668 -2.3% 1.02x(?)
PopFrontArrayGeneric 9755 9547 -2.1% 1.02x(?)
UTF8Decode 44202 43344 -1.9% 1.02x(?)
SortStringsUnicode 9547 9352 -2.0% 1.02x(?)
SetIsSubsetOf 3148 3074 -2.4% 1.02x(?)
ArrayOfGenericRef 9790 9623 -1.7% 1.02x(?)
ObjectiveCBridgeToNSDictionary 17996 17664 -1.8% 1.02x(?)
ObjectiveCBridgeFromNSArrayAnyObjectToStringForced 97698 95962 -1.8% 1.02x(?)
ObjectiveCBridgeToNSString 1161 1149 -1.0% 1.01x(?)
PopFrontArray 25269 24956 -1.2% 1.01x(?)
RecursiveOwnedParameter 10225 10087 -1.4% 1.01x(?)
ObjectiveCBridgeFromNSDictionaryAnyObjectToString 242499 241071 -0.6% 1.01x(?)
StringWithCString 149720 148877 -0.6% 1.01x(?)
SortLettersInPlace 2592 2579 -0.5% 1.01x(?)
XorLoop 19031 18793 -1.2% 1.01x(?)
StringInterpolation 15560 15448 -0.7% 1.01x(?)
AngryPhonebook 3061 3033 -0.9% 1.01x(?)
Walsh 12721 12621 -0.8% 1.01x(?)
Dictionary2 4984 4922 -1.2% 1.01x(?)
SetIntersect_OfObjects 19390 19284 -0.6% 1.01x(?)
Join 1471 1450 -1.4% 1.01x(?)
StringEqualPointerComparison 9958 9819 -1.4% 1.01x(?)
RC4 8890 8787 -1.2% 1.01x(?)
DictionaryLiteral 25621 25297 -1.3% 1.01x(?)
SetIntersect 20156 19970 -0.9% 1.01x(?)
SetExclusiveOr_OfObjects 64126 63667 -0.7% 1.01x(?)
HashTest 5249 5199 -0.9% 1.01x(?)
StringHasPrefixUnicode 15849 15695 -1.0% 1.01x(?)
RGBHistogram 51303 50850 -0.9% 1.01x(?)
ArrayAppendReserved 3311 3286 -0.8% 1.01x(?)
ArrayOfPOD 2376 2356 -0.8% 1.01x(?)
SetUnion 30735 30431 -1.0% 1.01x
Chars 5503 5439 -1.2% 1.01x(?)
DeadArray 121088 119822 -1.1% 1.01x(?)
ArrayValueProp 2323 2302 -0.9% 1.01x(?)
ObjectiveCBridgeStubFromArrayOfNSString 60669 60163 -0.8% 1.01x(?)
ObjectiveCBridgeStubNSDateMutationRef 14740 14652 -0.6% 1.01x(?)
MonteCarloPi 51490 51240 -0.5% 1.00x(?)
StackPromo 133856 133707 -0.1% 1.00x(?)
Integrate 369 369 +0.0% 1.00x
ClassArrayGetter 1266 1260 -0.5% 1.00x(?)
Histogram 13657 13595 -0.5% 1.00x(?)
ObjectiveCBridgeFromNSArrayAnyObjectForced 10322 10331 +0.1% 1.00x(?)
DictionarySwap 10458 10491 +0.3% 1.00x(?)
ObjectiveCBridgeFromNSDictionaryAnyObject 263944 265140 +0.5% 1.00x(?)
ByteSwap 10 10 +0.0% 1.00x
ObjectiveCBridgeStubToNSDate 13781 13745 -0.3% 1.00x(?)
ObjectiveCBridgeStubFromNSString 829 831 +0.2% 1.00x(?)
ProtocolDispatch2 445 445 +0.0% 1.00x
ArrayOfRef 8998 8996 -0.0% 1.00x(?)
ObjectiveCBridgeStubURLAppendPathRef 250476 250682 +0.1% 1.00x(?)
DictionaryOfObjects 5566 5591 +0.5% 1.00x(?)
ObjectiveCBridgeStubToNSDateRef 3397 3401 +0.1% 1.00x(?)
Hanoi 19823 19775 -0.2% 1.00x(?)
Dictionary 2673 2660 -0.5% 1.00x(?)
ArrayInClass 3707 3693 -0.4% 1.00x(?)
ObjectiveCBridgeFromNSString 5186 5207 +0.4% 1.00x(?)
ObjectiveCBridgeStubDateAccess 1132 1132 +0.0% 1.00x
MonteCarloE 108144 108076 -0.1% 1.00x(?)
SetUnion_OfObjects 47724 47829 +0.2% 1.00x(?)
StringHasSuffixUnicode 65758 65462 -0.5% 1.00x(?)
SetIsSubsetOf_OfObjects 2945 2940 -0.2% 1.00x(?)
LinkedList 26091 26121 +0.1% 1.00x(?)
ObjectiveCBridgeFromNSSetAnyObjectToStringForced 138074 138297 +0.2% 1.00x(?)
NSStringConversion 3046 3033 -0.4% 1.00x(?)
GlobalClass 0 0 +0.0% 1.00x
Memset 20050 20091 +0.2% 1.00x(?)
ArrayValueProp3 2875 2861 -0.5% 1.00x(?)
ArraySubscript 5501 5552 +0.9% 0.99x(?)
ObjectiveCBridgeFromNSArrayAnyObjectToString 126715 128253 +1.2% 0.99x(?)
ObjectiveCBridgeStubFromNSDateRef 4119 4167 +1.2% 0.99x
ObjectiveCBridgeFromNSStringForced 3102 3140 +1.2% 0.99x(?)
RangeAssignment 23508 23695 +0.8% 0.99x(?)
ProtocolDispatch 6353 6420 +1.1% 0.99x(?)
Dictionary3 1968 1992 +1.2% 0.99x(?)
PopFrontUnsafePointer 243352 246572 +1.3% 0.99x(?)
Calculator 899 905 +0.7% 0.99x(?)
MapReduce 45482 45851 +0.8% 0.99x(?)
DictionaryRemoveOfObjects 61068 61382 +0.5% 0.99x(?)
ObjectiveCBridgeFromNSArrayAnyObject 81690 82629 +1.1% 0.99x(?)
ObjectiveCBridgeStubDataAppend 3399 3444 +1.3% 0.99x(?)
NSDictionaryCastToSwift 14400 14615 +1.5% 0.99x(?)
RGBHistogramOfObjects 100063 100718 +0.7% 0.99x(?)
Sim2DArray 14206 14408 +1.4% 0.99x(?)
ObjectiveCBridgeToNSSet 17188 17356 +1.0% 0.99x(?)
ArrayLiteral 1086 1102 +1.5% 0.99x(?)
Dictionary2OfObjects 6791 6836 +0.7% 0.99x(?)
TwoSum 9025 9147 +1.4% 0.99x(?)
ObjectiveCBridgeStubNSDataAppend 2787 2827 +1.4% 0.99x(?)
SortStrings 2701 2768 +2.5% 0.98x(?)
DictionaryBridge 4165 4266 +2.4% 0.98x
ObjectiveCBridgeFromNSDictionaryAnyObjectForced 7634 7829 +2.5% 0.98x(?)
SuperChars 256241 260739 +1.8% 0.98x(?)
ErrorHandling 3734 3815 +2.2% 0.98x(?)
ObjectAllocation 555 564 +1.6% 0.98x(?)
ObjectiveCBridgeFromNSSetAnyObject 313991 321277 +2.3% 0.98x
ArrayAppend 3479 3540 +1.8% 0.98x(?)
CaptureProp 118242 120062 +1.5% 0.98x(?)
IterateData 10503 10731 +2.2% 0.98x(?)
SetExclusiveOr 44623 45495 +1.9% 0.98x(?)
StrToInt 5394 5488 +1.7% 0.98x(?)
DictionaryRemove 30579 31145 +1.9% 0.98x(?)
ArrayValueProp2 2826 2897 +2.5% 0.98x(?)
Dictionary3OfObjects 2599 2672 +2.8% 0.97x(?)
ObjectiveCBridgeStubFromNSStringRef 164 169 +3.0% 0.97x(?)
ArrayOfGenericPOD 3417 3525 +3.2% 0.97x(?)
ObjectiveCBridgeStubURLAppendPath 249799 258408 +3.5% 0.97x
Phonebook 62983 64673 +2.7% 0.97x(?)
ObjectiveCBridgeStubFromNSDate 3839 3951 +2.9% 0.97x(?)
StringBuilder 2664 2763 +3.7% 0.96x(?)
StrComplexWalk 7630 8020 +5.1% 0.95x(?)
ArrayValueProp4 2742 2901 +5.8% 0.95x
**Hardware Overview** Model Name: Mac mini Model Identifier: Macmini7,1 Processor Name: Intel Core i7 Processor Speed: 3 GHz Number of Processors: 1 Total Number of Cores: 2 L2 Cache (per Core): 256 KB L3 Cache: 4 MB Memory: 16 GB

@slavapestov slavapestov merged commit 1487d59 into swiftlang:master Sep 6, 2016
@slavapestov slavapestov mentioned this pull request Sep 7, 2016
Merged
@slavapestov slavapestov deleted the kill-canonical-mangling-signature branch September 7, 2016 04:48
@slavapestov slavapestov mentioned this pull request Sep 8, 2016
Merged
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@slavapestov @swift-ci @jrose-apple @shahmishal