This disables inlining at the SIL level. LLVM inlining is still enabled. We can
use this to expose one function at the SIL level - which can participate in
dominance based optimizations but which is implemented in terms of a cheap check
and an expensive check (function call) that benefits from LLVM's inlining.
Example:
The inline(late) in the example below prevents inlining of the two checks. We
can now perform dominance based optimizations on isClassOrObjExistential.
Without blocking inlining the optimizations would apply to the sizeof check
only and we would have multiple expensive function calls.
@inline(late)
func isClassOrObjExistential(t: Type) -> Bool{
return sizeof(t) == sizeof(AnyObject) &&
swift_isClassOrObjExistential(t)
}
We do want inlining of this function to happen at the LLVM level because the
first check is constant folded away - IRGen replaces sizeof by constants.
rdar://17961249
Swift SVN r21286
This is a simple, trivialy, not-even-half-way-there solution to weak
leaking of Objective-C classes introduced after the deployment
target. It only works for Objective-C classes and C global variables
that Clang consideres to be "weak imported". However, this bare
minimum should be enough to develop an app (by jumping through various
hoops) that uses new functionality when its
available. <rdar://problem/17296490>, which I've restricted in scope
to capture this.
Swift SVN r20956
functions, and make those functions memoize the result.
This memoization can be both threadsafe and extremely
fast because of the memory ordering rules of the platforms
we're targeting: x86 is very permissive, and ARM has a
very convenient address-dependence rule which happens to
exactly match the semantics we need.
Swift SVN r20381
*NOTE* This linkage is different from {Public,Hidden}External in that it has no
extra semantic meaning beyond shared.
The use of this linkage is to ensure that we do not serialize deserialized
shared functions. Those shared functions can always be re-deserialized from the
original module. This prevents a whole class of bugs related to the
creation of module cross references since all references to the shared
item go straight to the original module.
<rdar://problem/17772847>
Swift SVN r20375
Mandatory-inlined (aka transparent functions) are still treated as if they
had the location and scope of the call site. <rdar://problem/14845844>
Support inline scopes once we have an optimizing SIL-based inliner
Patch by Adrian Prantl.
Swift SVN r18835
Doing so causes the linker to list the framework itself as one of its
dependencies, which confuses tools that depend on the linker's dependency
output.
<rdar://problem/17006845>
Swift SVN r18578
To help with the playground's transition to top level code, hand the -playground frontend flag down to IRGenOptions, so that IRGen knows to emit runtime initializer code for classes and categories into top_level_code rather than an attributed function.
Swift SVN r18479
Prior to this fix this would fail:
(swift) import Foundation
(swift) extension NSDate { func foo() { println("foo") }}
As the Class for NSDate was not initialized.
<rdar://problem/16934080>
Swift SVN r18206
If a source file contains the main class for its module, then implicitly emit a top_level_code that invokes UIApplicationMain with the name of the marked class.
Swift SVN r18088
Failing Tests (9):
Swift :: DebugInfo/variables-interpreter.swift
Swift :: DebugInfo/variables-repl.swift
Swift :: Interpreter/SDK/Cocoa_repl.swift
Swift :: Interpreter/fractal.swift
Swift :: Interpreter/import.swift
Swift :: Interpreter/mandelbrot.swift
Swift :: Interpreter/repl.swift
Swift :: Serialization/operator.swift
Swift :: stdlib/VarArgs.swift
Swift SVN r18041
This current fix will initialize all objective C classes with the objective C runtime when any ObjC classes are defined in expressions
<rdar://problem/16029117>
Swift SVN r18037
If we officially register our classes with the ObjC runtime, we can't get away with generic class instances sharing a runtime name or a metaclass anymore, so pack the metaclass and rodata templates into the generic metadata template and add codegen to the fill function to wire up the references at instantiation time. Since we don't have a runtime mangler yet, create a stupid unique name for classes by tacking on the pointer value.
Swift SVN r17882
We no longer emit any unnecessary objects just because
you import Foundation/Cocoa/whatever, at least from
IRGen; SILGen still does a ton of useless extra work.
Swift SVN r16920
Use this node to capture the argument name and its source location in
the AST. We're only building these in one place at the moment; the
rest will be updated soon.
Swift SVN r16581
These bits are orthogonal to each other, so combine them into one, and diagnose attempts to produce a type that's both. Spot-fix a bunch of places this revealed by inspection that we would have crashed in SILGen or IRGen if blocks were be handled.
Swift SVN r16088
Create a global alias into the metadata of @objc-visible classes at their address point, which should make these classes visible for linking from ObjC, fixing <rdar://problem/14449644>.
Swift SVN r15921
We can just get it from the instance type, if the instance type has been fully initialized, which is the case except during parsing of type decls when the decls' own types are being formed.
Swift SVN r15598
The importance of this is that we will be able to use this name during
SIL serialization/deserialization to lookup partially deserialized
witness tables.
I left IRGen's original code alone until I can discuss with Joe/John
combining the logic together.
Swift SVN r15400
accessors.
Optimize these accessors by making them check for
BoundGenericXType instead of BoundGenericType and dyn_cast'ing
the Decl. (The latter used to be necessary before we split
BoundGenericType.)
Swift SVN r15037
LLVM doesn't have interior symbols as a first-class concept, so generate module inline asm that defines the OBJC_CLASS symbol relative to the Swift metadata symbol. To prevent our system linkers from considering this symbol as the start of a new object and breaking apart class metadata objects, put the class metadata object into a no_dead_strip section.
This isn't quite enough to get the OBJC_CLASS symbol to be available--the symbol appears to show up in the .o as an undefined symbol and stripped out of the .dylib. John is investigating with the backend and linker teams as to why this is the case.
Swift SVN r14927
Teach IRGen to honor the linkage of SILWitnessTables, and teach SILGen to emit witness tables and protocol witness thunks for external definitions with shared linkage. Fixes <rdar://problem/16264703>.
Swift SVN r14908
These changes add support for build and target configurations in the compiler.
Build and target configurations, combined with the use of #if/#else/#endif allow
for conditional compilation within declaration and statement contexts.
Build configurations can be passed into the compiler via the new '-D' flag, or
set within the LangOptions class. Target configurations are implicit, and
currently only "os" and "arch" are supported.
Swift SVN r14305
We should also remove it from IRGen's Explosion API; IRGen
should always use maximal explosion, and SILGen will tell us
whether or not we need to put that in memory somewhere.
But that can be a later commit.
Swift SVN r14242
Emit vtable entries for abstract initializers. When we're constructing
an object using an abstract initializer based on a metatype value that
is not statically derivable, use the vtable entry to call the
subclass's allocating constructor.
Most of the IRGen work here is hacking around the lossy SILDeclRef ->
(Code|Function)Ref -> SILDeclRef conversion. I'd feel bad about this
if John hadn't already agreed to clean this up at some point.
Swift SVN r14238
rdar://13013457
'import Cocoa' is still generating a ton of unnecessary
global metadata, which causes some unused VWTs to be built,
but at least we no longer generate tons of useless global
functions. At least, we don't in IR-gen --- we still do
all the SILGen work for them.
Swift SVN r14224
We're mostly not that bad about this right now, but lazy
emission is going to wreak havoc.
Note that SILGen itself doesn't really make very good decisions
about the order in which to emit functions, but step one
towards fixing that is actually respecting it.
Swift SVN r14200
- Parameterize maybeReadGenericParams' BitstreamCursor so that we can read from
the correct cursor when trying to read the generic params of a SILFunction.
- Only serialize the context generic params for SILFunctions for which we're
serializing a complete definition. This fixes issues with us getting the
wrong archetypes forward-declared from references in other modules.
In this version of the patch, we adjust the deserialization point for the
generic param list to correctly come before we check if the SILFunction block
is empty, and we add a kludge to keep the JIT from crapping itself when it sees
the same transparent definition in multiple REPL lines' modules
<rdar://problem/16094902>.
The previous commit solves a problem this exposed at r14050 in inout deshadowing
that caused memory corruption when transparent functions were imported. This
should now be safe to commit.
Swift SVN r14109
