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59001
2017 Jul 24
2
LazyValueInfo vs ScalarEvolution
Hi,
Both LazyValueInfo and ScalarEvolution can calculate a constant range for
an LLVM Value.
I found that some times they do not agree, may be I interpreted them
incorrectly
For example in the following IR:
bb85: ; preds = %bb85, %bb73
%tmp86 = phi i32 [ 1, %bb73 ], [ %tmp95, %bb85 ]
%tmp95 = add nsw i32 %tmp86, 1
%tmp96 = icmp slt i32 %tmp95,