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path: root/llvm/lib/CodeGen/MachineLoopRanges.cpp
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2010-12-17Add MachineLoopRange comparators for sorting loop lists by number and by area.Jakob Stoklund Olesen1-2/+33
llvm-svn: 122073
2010-12-17Provide LiveIntervalUnion::Query::checkLoopInterference.Jakob Stoklund Olesen1-2/+2
This is a three-way interval list intersection between a virtual register, a live interval union, and a loop. It will be used to identify interference-free loops for live range splitting. llvm-svn: 122034
2010-12-15Add MachineLoopRanges analysis.Jakob Stoklund Olesen1-0/+85
A MachineLoopRange contains the intervals of slot indexes covered by the blocks in a loop. This representation of the loop blocks is more efficient to compare against interfering registers during register coalescing. llvm-svn: 121917