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* Add support for SharedLibraryAtoms (proxy atoms for exported symbols from a Nick Kledzik2012-02-221-6/+50
| | | | | | | | shared library) and AbsoluteAtoms (proxy atoms for absolute address (e.g. ROM)). Redesign weak importing as can-be-null-at-runtime and can-be-null-at-build-time. Add lots of test cases for all the above. llvm-svn: 151204
* use llvm::DenseMap instead of std::mapNick Kledzik2012-02-151-2/+2
| | | | llvm-svn: 150547
* (no commit message)Nick Kledzik2012-02-151-1/+1
| | | | llvm-svn: 150539
* A couple of big refactorings: 1) Move most attributes of Atom down to ↵Nick Kledzik2012-01-111-48/+80
| | | | | | DefinedAtom, so only atoms representing definitions need to implement them. 2) Remove definitionTentative, definitionWeak, mergeDuplicates, and autoHide. Replace with merge and interposable attributes. 3) Make all methods on Atom be virtual so that future object file readers can lazily generated attributes llvm-svn: 147903
* add initial support for coalescing by content (c-strings) with test caseNick Kledzik2012-01-091-1/+55
| | | | llvm-svn: 147799
* Support more Atom attributes. Add more test cases to lld-coreNick Kledzik2012-01-041-19/+27
| | | | llvm-svn: 147571
* Add more merging/coalescing test cases and make core linking work for themNick Kledzik2011-12-221-9/+32
| | | | llvm-svn: 147130
* Refactor and comment Atom attributes. Replace combine() with internalName() ↵Nick Kledzik2011-12-201-14/+14
| | | | | | and mergeDuplicates() llvm-svn: 146958
* Initial commit. Code by Nick Kledzik. Cleanups and build system by me.Michael J. Spencer2011-12-181-0/+140
llvm-svn: 146844
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