Commit Graph

10 Commits

Author SHA1 Message Date
Mehdi Amini
ffe2e4aae0 Change ModuleLinker to take a set of GlobalValues to import instead of a single one
For efficiency reason, when importing multiple functions for the same Module,
we can avoid reparsing it every time.

Differential Revision: http://reviews.llvm.org/D15102

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 254486
2015-12-02 04:34:28 +00:00
Mehdi Amini
a11bdc8ef7 Modify FunctionImport to take a callback to load modules
When linking static archive, there is no individual module files to
load. Instead they can be mmap'ed and could be initialized from a
buffer directly. The callback provide flexibility to override the
scheme for loading module from the summary.

Differential Revision: http://reviews.llvm.org/D15101

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 254479
2015-12-02 02:00:29 +00:00
Rafael Espindola
0e309fe860 Use references now that it is natural to do so.
The linker never takes ownership of a module or changes which module it
is refering to, making it natural to use references.

llvm-svn: 254449
2015-12-01 19:50:54 +00:00
Teresa Johnson
430110cc0b [ThinLTO] Wrap dbgs() output in DEBUG macro
Missed in a couple places.

llvm-svn: 254422
2015-12-01 17:12:10 +00:00
Teresa Johnson
d582f5b3f8 [ThinLTO] Remove stale comment (NFC)
Stale as of r254036 which added basic profitability check.

llvm-svn: 254421
2015-12-01 16:45:23 +00:00
Teresa Johnson
3930361969 [ThinLTO] Add option to limit importing based on instruction count
Add a simple initial heuristic to control importing based on the number
of instructions recorded in the function's summary. Add option to
control the limit, and test using option.

llvm-svn: 254036
2015-11-24 22:55:46 +00:00
Teresa Johnson
d450da3281 [ThinLTO] Refactor function body scan during importing into helper (NFC)
llvm-svn: 254020
2015-11-24 21:15:19 +00:00
Teresa Johnson
130de7af7f [ThinLTO] Enable iterative importing in FunctionImport pass
Analyze imported function bodies and add any new external calls to
the worklist for importing. Currently no controls on the importing
so this will end up importing everything possible in the call tree
below the importing module. Basic profitability checks coming next.

Update test to check for iteratively inlined functions.

llvm-svn: 254011
2015-11-24 19:55:04 +00:00
Teresa Johnson
17626654fd [ThinLTO] Fix FunctionImport alias checking and test
Skip imports for weak_any aliases as well. Fix the test to check
non-import of weak aliases and functions, and import of normal alias.

llvm-svn: 253991
2015-11-24 16:10:43 +00:00
Mehdi Amini
42418aba58 Add a FunctionImporter helper to perform summary-based cross-module function importing
Summary:
This is a helper to perform cross-module import for ThinLTO. Right now
it is importing naively every possible called functions.

Reviewers: tejohnson

Subscribers: dexonsmith, llvm-commits

Differential Revision: http://reviews.llvm.org/D14914

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 253954
2015-11-24 06:07:49 +00:00