llvm-project

Author	SHA1	Message	Date
David Greene	646aacb097	Change errs() to dbgs(). llvm-svn: 92548	2010-01-05 00:10:05 +00:00
Evan Cheng	fb1654d467	Watch out for duplicated PHI instructions. llvm-svn: 90816	2009-12-07 23:11:03 +00:00
Evan Cheng	cc77062194	Pre-regalloc tale duplication. Work in progress. llvm-svn: 90759	2009-12-07 10:15:19 +00:00
Evan Cheng	92c310cb79	If BB is empty, insert PHI before end() instead of front(). llvm-svn: 90744	2009-12-07 03:07:01 +00:00
Evan Cheng	0f1cc35c65	Don't try to be cute with undef optimization here. Let ProcessImplicitDefs handle it. llvm-svn: 90566	2009-12-04 09:23:37 +00:00
Evan Cheng	e156f611ab	- If the reaching definition is an undef and the use is a PHI, add the implicit_def to the end of the source block. - When reaching value is replaced with another, update the cache as well. llvm-svn: 90501	2009-12-04 00:09:05 +00:00
Evan Cheng	b2c1529d8f	Handle undef values properly. llvm-svn: 90489	2009-12-03 21:51:55 +00:00
Evan Cheng	7145382389	Fill out codegen SSA updater. It's not yet tested. llvm-svn: 90395	2009-12-03 02:31:43 +00:00
Evan Cheng	20e9d030c9	Skeleton for MachineInstr level SSA updater. llvm-svn: 90353	2009-12-02 22:02:52 +00:00