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path: root/llvm/lib/CodeGen/InterferenceCache.h
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* Precompute interference for neighbor blocks as long as there is no interference.Jakob Stoklund Olesen2011-04-091-1/+5
| | | | | | This doesn't require seeking in the live interval union, so it is very cheap. llvm-svn: 129187
* Add an InterferenceCache class for caching per-block interference ranges.Jakob Stoklund Olesen2011-04-021-0/+159
When the greedy register allocator is splitting multiple global live ranges, it tends to look at the same interference data many times. The InterferenceCache class caches queries for unaltered LiveIntervalUnions. llvm-svn: 128764
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