9 Commits

Author	SHA1	Message	Date
Dan Gohman	17fb0d24eb	Give Instruction::isSameOperationAs a corresponding comment to note ... the relationship with MergeFunctions.cpp's isEquivalentOperation, and make a trivial code reordering so that the two functions are easier to compare. Fix the name of Instruction::isSameOperationAs in MergeFunction.cpp's isEquivalentOperation's comment, and fix a nearby 80-column violation. llvm-svn: 73241	2009-06-12 19:03:05 +00:00
Nick Lewycky	ec06695579	Keep callers of a weak function calling it, instead of the non-weak equivalent. ... llvm-svn: 73235	2009-06-12 17:16:48 +00:00
Nick Lewycky	d5bf51faa2	Don't forget to match the calling convention when producing a thunk. ... llvm-svn: 73231	2009-06-12 16:04:00 +00:00
Nick Lewycky	25675ac14a	Given two identical weak functions, produce one internal function and two weak ... thunks. llvm-svn: 73230	2009-06-12 15:56:56 +00:00
Nick Lewycky	e04dc22ebd	Add an "are types equivalent" operation that ignores the types that a pointer ... points to while analyzing all other fields. Use FoldingSetNodeID to produce a good hash. This dramatically decreases run times. Emit thunks. This means that it can look at all functions regardless of what the linkage is or if the address is taken, but unfortunately some small functions can be even shorter than the thunk because our backend doesn't yet realize it can just turn these into jumps. This means that this pass will pessimize code on average. llvm-svn: 73222	2009-06-12 08:04:51 +00:00
Rafael Espindola	6de96a1b5d	Add the private linkage. ... llvm-svn: 62279	2009-01-15 20:18:42 +00:00
Nick Lewycky	3c6d34a7f0	Changes from Duncan's review: ... * merge two weak functions by making them both alias a third non-weak fn * don't reimplement CallSite::hasArgument * whitelist the safe linkage types llvm-svn: 58568	2008-11-02 16:46:26 +00:00
Duncan Sands	cede1e035c	Get this building on 64 bit machines (error: ... cast from ‘const llvm::PointerType*’ to ‘unsigned int’ loses precision). llvm-svn: 58561	2008-11-02 09:00:33 +00:00
Nick Lewycky	d01d42e76c	Add a new MergeFunctions pass. It finds identical functions and merges them. ... This triggers only 60 times in llvm-test (look at .llvm.bc, not .linked.rbc) and so it probably wont be turned on by default. Also, may of those are likely to go away when PR2973 is fixed. llvm-svn: 58557	2008-11-02 05:52:50 +00:00