Peter Collingbourne d4bff30370 DI: Reverse direction of subprogram -> function edge. ... Previously, subprograms contained a metadata reference to the function they described. Because most clients need to get or set a subprogram for a given function rather than the other way around, this created unneeded inefficiency. For example, many passes needed to call the function llvm::makeSubprogramMap() to build a mapping from functions to subprograms, and the IR linker needed to fix up function references in a way that caused quadratic complexity in the IR linking phase of LTO. This change reverses the direction of the edge by storing the subprogram as function-level metadata and removing DISubprogram's function field. Since this is an IR change, a bitcode upgrade has been provided. Fixes PR23367. An upgrade script for textual IR for out-of-tree clients is attached to the PR. Differential Revision: http://reviews.llvm.org/D14265 llvm-svn: 252219		2015-11-05 22:03:56 +00:00
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basic.ll	[opaque pointer type] Add textual IR support for explicit type parameter to load instruction	2015-02-27 21:17:42 +00:00
cache-bug.ll	Prevent the scalarizer from caching incorrect entries	2015-08-10 14:48:47 +00:00
dbginfo.ll	DI: Reverse direction of subprogram -> function edge.	2015-11-05 22:03:56 +00:00
store-bug.ll	[Scalarizer] Fix potential for stale data in Scattered across invocations	2015-07-23 20:53:46 +00:00