Keep track of the last place a live virtreg was used.
This allows us to add accurate kill markers, something the scavenger likes.
Add some more tests from ARM that needed this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103521 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/ARM/2008-02-04-LocalRegAllocBug.ll b/test/CodeGen/ARM/2008-02-04-LocalRegAllocBug.ll
index ff01506..f775c61 100644
--- a/test/CodeGen/ARM/2008-02-04-LocalRegAllocBug.ll
+++ b/test/CodeGen/ARM/2008-02-04-LocalRegAllocBug.ll
@@ -1,4 +1,5 @@
 ; RUN: llc < %s -mtriple=arm-linux-gnueabi -regalloc=local
+; RUN: llc < %s -mtriple=arm-linux-gnueabi -regalloc=fast
 ; PR1925
 
 	%struct.encode_aux_nearestmatch = type { i32*, i32*, i32*, i32*, i32, i32 }