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17 Commits

Author SHA1 Message Date
Jonathan Grynspan
9644c7390f 58711 - swift_slowAlloc() and friends should be marked SWIFT_NODISCARD 2022-05-06 11:05:12 -04:00
Jonathan Grynspan
770fd107de 58686: swift_slowAlloc() _et al._ should be marked returns-nonnull to improve codegen 2022-05-05 23:18:48 -04:00
Jonathan Grynspan
b749dd395d Revert "runtime: allow over-aligned types in the runtime" 
This reverts commit b694ce4634.
 2022-05-05 11:10:12 -04:00
Jonathan Grynspan
19e954fc31 Sidetables should not use operator new or operator delete. 2022-04-28 13:46:20 -04:00
Josh Soref
871634b9f3 Spelling include (#42616) 
* spelling: accessible

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: are

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: assume

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* spelling: attempt

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* spelling: children

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* spelling: convenience

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* spelling: creation

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* spelling: default

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* spelling: dereference

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* spelling: deserialization

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* spelling: embedded

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* spelling: enriched

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* spelling: excluding

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* spelling: for

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* spelling: global

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* spelling: guarantee

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* spelling: initialization

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* spelling: initialize

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* spelling: label

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* spelling: lifting

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* spelling: mangled

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* spelling: metadata

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* spelling: minimum

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* spelling: offset

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* spelling: only

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* spelling: otherwise

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* spelling: output

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* spelling: overall

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* spelling: parameter

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* spelling: passed

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: performance

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* spelling: referenced

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* spelling: standard

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* spelling: syntax

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* spelling: that

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* spelling: the

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* spelling: trivia

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* spelling: truncate

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* spelling: undesirable

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: uniformly

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>

* spelling: uninitialized

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* spelling: value

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* spelling: verification

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Co-authored-by: Josh Soref <jsoref@users.noreply.github.com>
 2022-04-25 09:00:59 -07:00
Saleem Abdulrasool
b694ce4634 runtime: allow over-aligned types in the runtime 
Not all targets have a 16-byte type alignment guarantee.  For the types
which are not naturally aligned, provide a type specific `operator new`
overload to ensure that we are properly aligning the type on allocation
as we run the risk of under-aligned allocations otherwise.

This should no longer be needed with C++17 and newer which do a two
phase `operator new` lookup preferring
`operator new(std::size, std::align_val_t)` if needed.  The base type
would be fully pre-processed away.  The empty base class optimization
should help ensure that we do not pay any extra size costs for the
alignment fixes.

As we are a C++14 codebase, we must locally implement some of the
standard type_traits utilities, namely `void_t`.  We take the minimal
definition here, assuming that the compiler is up-to-date with C++14 DR
reports which fixed an issue in SFINAE.  We use the SFINAE for detecting
the presence of the `operator new` overload to guide the over-alignment,
which is inherited through the new `swift::overaligned_type<>`  base
type.

Annotate the known classes which request explicit alignment which is
non-pointer alignment.  This list was identified by
`git grep ' alignas(.*) '`.
 2022-04-04 18:26:20 -07:00
moatom
2e95a0d265 Fix include guards 2019-06-02 12:10:43 +09:00
Davide Italiano
cb8d946cba [Runtime] Remove the dependency on LLVM's Compiler.h 
<rdar://problem/35860874>
 2018-07-03 13:52:40 -07:00
practicalswift
6d1ae2a39c [gardening] 2016 → 2017 2017-01-06 16:41:22 +01:00
practicalswift
797b80765f [gardening] Use the correct base URL (https://swift.org) in references to the Swift website 
Remove all references to the old non-TLS enabled base URL (http://swift.org)
 2016-11-20 17:36:03 +01:00
practicalswift
f91525a10f Consistent placement of "-*- [language] -*-===//" in header. 2016-01-04 09:46:20 +01:00
Zach Panzarino
e3a4147ac9 Update copyright date 2015-12-31 23:28:40 +00:00
Dmitri Hrybenko
b246c6cf10 Remove traces of the custom Swift zone 
Swift SVN r22320
 2014-09-28 00:10:49 +00:00
Dave Zarzycki
cf4fbe33f5 Heap: Checkpoint leaks/heap/vm_map support 
Huge allocation leaks are detected correctly.
Tiny allocation leaks are problematic, both false positive and false negative.

For example:

leaks Report Version:  2.0
Process 73345: 4980 nodes malloced for 1677 KB
Process 73345: 1 leak for 1048576 total leaked bytes.
Leak: 0x10aed0000  size=1048576  zone: SwiftZone_0x10adc35d8

Swift SVN r18007
 2014-05-13 16:28:44 +00:00
Dave Zarzycki
bba63fa14d Runtime: Add LLVM_LIBRARY_VISIBILITY to a few APIs. NFC. 
Swift SVN r15697
 2014-03-31 22:50:22 +00:00
Dave Zarzycki
0e8de87f05 Runtime: more SwiftObject API completeness 
Swift SVN r15696
 2014-03-31 22:50:19 +00:00
Dave Zarzycki
b32a02a75f Runtime: wire up wrapper zone around the default zone 
Swift SVN r14226
 2014-02-21 20:11:48 +00:00