GCC Middle and Back End API Reference
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Data Fields | |
sreal | back_edge_prob |
unsigned int | back_edge:1 |
Similar information for edges.
unsigned int edge_info_def::back_edge |
True if the edge is a loopback edge in the natural loop.
sreal edge_info_def::back_edge_prob |
In case edge is a loopback edge, the probability edge will be reached in case header is. Estimated number of iterations of the loop can be then computed as 1 / (1 - back_edge_prob).