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Author SHA1 Message Date
Jakob Stoklund Olesen bde96ad23e Add support for rematerialization to InlineSpiller. 
llvm-svn: 107351
 2010-06-30 23:03:52 +00:00
Jakob Stoklund Olesen c39d3497c8 Remember to track spill slot uses in VirtRegMap when inserting loads and stores. 
LocalRewriter::runOnMachineFunction uses this information to mark dead spill
slots.

This means that InlineSpiller now also works for functions that spill.

llvm-svn: 107302
 2010-06-30 18:19:08 +00:00
Jakob Stoklund Olesen f888911932 Begin implementation of an inline spiller. 
InlineSpiller inserts loads and spills immediately instead of deferring to
VirtRegMap. This is possible now because SlotIndexes allows instructions to be
inserted and renumbered.

This is work in progress, and is mostly a copy of TrivialSpiller so far. It
works very well for functions that don't require spilling.

llvm-svn: 107227
 2010-06-29 23:58:39 +00:00