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[FlattenAlgo] Replace more isl foreach calls with for loops

Description

[FlattenAlgo] Replace more isl foreach calls with for loops

This time we replace for loops where the return isl::stat::error has
been used to carry status information.

There are still two uses of foreach remaining as we do not have a
corresponding for implementation for pw_aff functions.

Details

Committed
grosserJul 16 2018, 11:16 PM
Parents
rL337238: [FlattenAlgo] Replace some isl foreach calls with for loops
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