Jakob Stoklund Olesen
27f942fa60
Make the UselessRegs argument optional in the LiveRangeEdit constructor.
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llvm-svn: 127181
2011-03-07 22:42:16 +00:00
Jakob Stoklund Olesen
13eb3650b0
This method belonged in VirtRegMap.
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llvm-svn: 126002
2011-02-19 00:38:43 +00:00
Jakob Stoklund Olesen
4376d67b6f
Use VirtRegMap's Virt2SplitMap to keep track of the original live range before splitting.
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All new virtual registers created for spilling or splitting point back to their original.
llvm-svn: 125980
2011-02-18 22:35:20 +00:00
Jakob Stoklund Olesen
de5c4dc24b
Simplify the LiveRangeEdit::canRematerializeAt() interface a bit.
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llvm-svn: 118661
2010-11-10 01:05:12 +00:00
Jakob Stoklund Olesen
ba9a4985a2
Don't assign new registers created during a split to the same stack slot, but
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give them individual stack slots once the are actually spilled.
llvm-svn: 117945
2010-11-01 19:49:57 +00:00
Jakob Stoklund Olesen
a3b61d32d8
Remember to keep track of rematted values.
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llvm-svn: 116962
2010-10-20 22:50:42 +00:00
Jakob Stoklund Olesen
2edaa2fb24
Move some of the InlineSpiller rematerialization code into LiveRangeEdit.
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llvm-svn: 116951
2010-10-20 22:00:51 +00:00
Jakob Stoklund Olesen
0f3e98ce2e
Move stack slot assignments into LiveRangeEdit.
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All registers created during splitting or spilling are assigned to the same
stack slot as the parent register.
When splitting or rematting, we may not spill at all. In that case the stack
slot is still assigned, but it will be dead.
llvm-svn: 116546
2010-10-15 00:16:55 +00:00
Jakob Stoklund Olesen
72911e49fa
Create a new LiveRangeEdit class to keep track of the new registers created when
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splitting or spillling, and to help with rematerialization.
Use LiveRangeEdit in InlineSpiller and SplitKit. This will eventually make it
possible to share remat code between InlineSpiller and SplitKit.
llvm-svn: 116543
2010-10-14 23:49:52 +00:00
