llvm-project/llvm/test/tools/dsymutil
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
..
ARM [dsymutil] Fix handling of inlined_subprogram low_pcs 2015-08-31 01:43:14 +00:00
Inputs DI: Reverse direction of subprogram -> function edge. 2015-11-05 22:03:56 +00:00
X86 dsymutil: Don't prune forward declarations inside of an imported TAG_module 2015-10-05 23:11:20 +00:00
arch-option.test Tweak llvm/test/tools/dsymutil/arch-option.test to avoid globbing on mingw-w64. 2015-08-07 08:38:22 +00:00
archive-timestamp.test [dsymutil] Rename -v option to -verbose 2015-07-29 22:29:34 +00:00
basic-linking.test [dsymutil] Support multiple input files on the command line 2015-07-31 20:22:20 +00:00
debug-map-parsing.test [dsymutil] Store an optional BinaryPath in the debug map. 2015-08-26 05:09:59 +00:00
dump-symtab.test [dsymutil] Implement -symtab/-s option. 2015-08-31 00:29:09 +00:00
fat-binary-output.test [dsymutil] Add (unimplemented) --flat option 2015-08-06 21:05:01 +00:00
yaml-object-address-rewrite.test [dsymutil] Store an optional BinaryPath in the debug map. 2015-08-26 05:09:59 +00:00