4 Commits

Author	SHA1	Message	Date
Dan Gohman	147d9fa57d	Don't assume that only Uses can be kills. Defs are marked as kills initially ... when there are no uses. This fixes a dangling-pointer bug, where pointers to deleted instructions were not removed from kills lists. More info here: http://lists.cs.uiuc.edu/pipermail/llvmdev/2007-July/009749.html llvm-svn: 40131	2007-07-20 23:17:34 +00:00
Evan Cheng	a8d152a22a	Add comment. ... llvm-svn: 40022	2007-07-18 23:34:48 +00:00
Gabor Greif	ef3d8362a3	fix typos ... llvm-svn: 38453	2007-07-09 12:00:59 +00:00
David Greene	02f6e9b621	Factor live variable analysis so it does not do register coalescing ... simultaneously. Move that pass to SimpleRegisterCoalescing. This makes it easier to implement alternative register allocation and coalescing strategies while maintaining reuse of the existing live interval analysis. llvm-svn: 37520	2007-06-08 17:18:56 +00:00