Chris Lattner 7e40f63428 When inserting PHI nodes, don't insert any phi nodes that are obviously ... unneccesary. This allows us to delete several hundred phi nodes of the form PHI(x,x,x,undef) from 253.perlbmk and probably other programs as well. This implements Mem2Reg/UndefValuesMerge.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17098 91177308-0d34-0410-b5e6-96231b3b80d8		2004-10-17 21:25:56 +00:00
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Analysis	Add support for unreachable	2004-10-16 18:21:33 +00:00
Archive	Changes For Bug 352	2004-09-01 22:55:40 +00:00
AsmParser	Parse undef and unreachable	2004-10-16 18:17:13 +00:00
Bytecode	Do not erroneously accept revision 6 bytecode files when the format hasn't	2004-10-16 18:56:02 +00:00
CodeGen	Add support for undef	2004-10-16 18:19:26 +00:00
Debugger	Update to reflect changes in Makefile rules.	2004-10-13 11:46:52 +00:00
ExecutionEngine	Add support for unreachable	2004-10-16 18:21:33 +00:00
Linker	Add support for undef and unreachable	2004-10-16 18:08:06 +00:00
Support	Update to reflect changes in Makefile rules.	2004-10-13 11:46:52 +00:00
System	Allow this file to compile on Darwin.	2004-10-14 03:33:25 +00:00
Target	The first hunk corrects a bug when printing undef null values. We would print	2004-10-17 17:48:59 +00:00
Transforms	When inserting PHI nodes, don't insert any phi nodes that are obviously	2004-10-17 21:25:56 +00:00
VMCore	Fix constant folding relational operators with undef operands.	2004-10-17 04:01:51 +00:00
Makefile	Wrap long line	2004-09-15 01:34:42 +00:00
Makefile.am	Update to reflect changes in Makefile rules.	2004-10-13 11:46:52 +00:00