3 Commits

Author	SHA1	Message	Date
Evan Cheng	2fa416debd	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	bd7b181f94	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	deed780bc6	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