llvm-project

Author	SHA1	Message	Date
Evan Cheng	595a16300c	When all defs of a vr are implicit_def, delete all of the defs. llvm-svn: 89905	2009-11-26 00:32:36 +00:00
Evan Cheng	44df27e964	ProcessImplicitDefs should watch out for invalidated iterator and extra implicit operands on copies. llvm-svn: 89880	2009-11-25 21:13:39 +00:00
Evan Cheng	11bf4493d4	For some targets, a copy can use a register multiple times, e.g. ppc. llvm-svn: 88895	2009-11-16 05:52:06 +00:00
Lang Hames	01f31c0a48	Fixes the bug exposed by Anton's test case in PR 5495: Make sure when ProcessImplicitDefs removes a copy which kills its source reg that it removes the copy from said reg's Kills list. llvm-svn: 88881	2009-11-16 02:07:31 +00:00
Lang Hames	05fb9637f6	The Indexes Patch. This introduces a new pass, SlotIndexes, which is responsible for numbering instructions for register allocation (and other clients). SlotIndexes numbering is designed to match the existing scheme, so this patch should not cause any changes in the generated code. For consistency, and to avoid naming confusion, LiveIndex has been renamed SlotIndex. The processImplicitDefs method of the LiveIntervals analysis has been moved into its own pass so that it can be run prior to SlotIndexes. This was necessary to match the existing numbering scheme. llvm-svn: 85979	2009-11-03 23:52:08 +00:00