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  • Gabor Greif's avatar
    Simplify the logic of getting hold of a PHI predecessor block. · eb61fcf2
    Gabor Greif authored 
    There is now a direct way from value-use-iterator to incoming block in PHINode's API.
This way we avoid the iterator->index->iterator trip, and especially the costly
getOperandNo() invocation. Additionally there is now an assertion that the iterator
really refers to one of the PHI's Uses.

llvm-svn: 62869
    eb61fcf2