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6 Commits

Author SHA1 Message Date
David Greene
6de371c435 Change errs() to dbgs(). 
llvm-svn: 92567
 2010-01-05 01:24:28 +00:00
Evan Cheng
82b29e816e 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
bdedf32e51 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
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