4 Commits

Author	SHA1	Message	Date
Adrian Prantl	54af8e461f	Debug Info: Encode Archetype names in DWARF ... Currently LLDB calls into ide::getDeclFromMangledSymbolName() to get to this information and we would like to get rid of this call. rdar://problem/47798056	2019-02-20 16:04:16 -08:00
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
Adrian Prantl	bab3000069	Use depth and index to lookup type metadata artificial variables ... instead of using name and decl context. The advantages of this approach are three-fold: - This is necessary to support inlined generic functions. - We can retire the debugger-specific type name manfgling mode for archetypes. - This saves 270kb of debug information in the x86_64 libSwiftCore.dylib alone. <rdar://problem/38306256>	2018-06-12 12:48:15 -07:00
Adrian Prantl	a95791c1b8	Fix bugs that caused IRGen to behave differently when debug info was enabled. ... It hass been a longstanding principle in LLVM that the presence of debug info shall not affect code generation. This patch brings the Swift frontend closer to this ideal: - unconditionally emit shadow copies - unconditionally bind type metadata The extra allocas, bitcasts, geps, and stores being emitted get optimized away when compiling at anything but -Onone. There are few use-cases for compiling at -Onone without -g, so this shouldn't affect performance for any real-world use-cases.	2018-06-01 11:17:39 -07:00