Peter Collingbourne 5b721561aa 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
..
2009-01-25-SingleEntryPhi.ll
alloca.ll
basic.ll
crash.ll
dbgvalue.ll	DI: Reverse direction of subprogram -> function edge.	2015-11-05 22:03:56 +00:00
indirectbr.ll
multiple-exits.ll
nosimplifylatch.ll
oz-disable.ll
phi-duplicate.ll
PhiRename-1.ll
PhiSelfReference-1.ll
pr2639.ll
pr22337.ll
preserve-loop-simplify.ll
preserve-scev.ll
simplifylatch.ll