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10 Commits

Author SHA1 Message Date
Erik Eckstein
39bb14b094 change mangling prefix from $S to $s 
This is the final ABI mangling prefix

rdar://problem/38471478
 2018-09-19 13:55:11 -07:00
Arnold Schwaighofer
d981bb1d96 Mangling: noescape functions will be trivial and no longer compatible with escape function types. 
Mangle escapeness as part of the type.

Part of:
SR-5441
rdar://36116691
 2018-02-06 08:51:43 -08:00
Erik Eckstein
cd3d50a5d9 ABI: Change the mangling prefix from _T0 to $S 2018-01-06 13:55:59 -08:00
Pavel Yaskevich
600b15821d [Mangling/ABI] NFC: Fix DebugInfo tests to reflect label mangling changes 2017-12-18 15:44:24 -08:00
Adrian Prantl
e574aa765f Don't emit shadow copies for anonymous variables. 
Switch statements generate at least one anonymous match variable per
case, which consumes both a lot of stack space and an explosion of
range extension depencies due to the way case statements are scoped.

rdar://problem/34326355
 2017-11-16 10:41:40 -08:00
Erik Eckstein
c4a11f4c92 tests: remove the now unused option -new-mangling-for-tests 2017-03-22 11:28:43 -07:00
Erik Eckstein
a04a29af4f mangling: efficient mangling of repeated substitutions 
Instead of appending a character for each substitution, we now prefix the substitution with the repeat count, e.g.
AbbbbB -> A5B

The same is done for known-type substitutions, e.g.
SiSiSi -> S3i

This significantly shrinks mangled names which contain large lists of the same type, like
  func foo(_ x: (Int, Int, Int, Int, Int, Int, Int, Int, Int, Int, Int, Int))

rdar://problem/30707433
 2017-03-05 17:41:43 -08:00
Erik Eckstein
fcd79c044d Mangling: consider bound generic types for substitutions 
This shrinks the name length if the same bound generic type is used multiple times, like: func foo(_ x: [Int], _ y: [Int])
 2017-03-05 17:40:07 -08:00
Erik Eckstein
1d3724666f tests: convert about 400 tests to the new mangling by using the -new-mangling-for-tests option 
When the new mangling is enabled permanently, the option can be removed from the RUN command lines again.
 2017-01-24 15:27:45 -08:00
Adrian Prantl
7c763e6f72 Fix a compile time performance regression caused by redundant debug info. 
Even at -Onone one SILValue can back up more than one local source variable.
This commit changes the list of variable values into a set.

<rdar://problem/28467349>
 2016-09-26 17:33:20 -07:00