255 Commits

Author	SHA1	Message	Date
Chris Lattner	fe6f2e3e80	Implement ArgumentPromotion/aggregate-promote.ll ... This allows pointers to aggregate objects, whose elements are only read, to be promoted and passed in by element instead of by reference. This can enable a LOT of subsequent optimizations in the caller function. It's worth pointing out that this stuff happens a LOT of C++ programs, because objects in templates are generally passed around by reference. When these templates are instantiated on small aggregate or scalar types, however, it is more efficient to pass them in by value than by reference. This transformation triggers most on C++ codes (e.g. 334 times on eon), but does happen on C codes as well. For example, on mesa it triggers 72 times, and on gcc it triggers 35 times. this is amazingly good considering that we are using 'basicaa' so far. llvm-svn: 12202	2004-03-08 01:04:36 +00:00
Chris Lattner	cc544e57f3	Implement: ArgumentPromotion/chained.ll ... llvm-svn: 12200	2004-03-07 22:52:53 +00:00
Chris Lattner	64b8d697ad	Fix another minor bug, exposed by perlbmk ... llvm-svn: 12198	2004-03-07 22:43:27 +00:00
Chris Lattner	6770842b67	Fix a minor bug and turn debug output into, well, debug output. ... llvm-svn: 12195	2004-03-07 21:54:50 +00:00
Chris Lattner	483ae01c9c	New LLVM pass: argument promotion. This version only handles simple scalar ... variables. llvm-svn: 12193	2004-03-07 21:29:54 +00:00