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64b3f9d7a7626f8ed97977c24fa91abd3037c8a1
llvm-project/llvm/lib/CodeGen/LiveInterval.cpp
Evan Cheng 64b3f9d7a7 Two coalescer fixes in one. 
1. Use the same value# to represent unknown values being merged into sub-registers.
2. When coalescer commute an instruction and the destination is a physical register, update its sub-registers by merging in the extended ranges.

llvm-svn: 66610
2009-03-11 00:03:21 +00:00

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