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2 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
57f1e2cee0 Try harder to get the hint by preferring to evict hint interference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126463 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-25 01:04:22 +00:00
Jakob Stoklund Olesen
c9672cb8be Add an AllocationOrder class that can iterate over the allocatable physical 
registers for a given virtual register.

Reserved registers are filtered from the allocation order, and any valid hint is
returned as the first suggestion.

For target dependent hints, a number of arcane target hooks are invoked.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121497 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-10 18:36:02 +00:00