128f43cf67
Previously I've changed gimple_split_edge to avoid PHI node re-allocation, but this introduced swapping of PHI arguments due to the way edge redirection works. This is now a problem for me and which can be solved with the following approach reducing the overhead of split_edge even more. We can simply pretend there are no PHI nodes if we can make sure the new fallthru will have the same dest_idx as the old edge into the destination. 2020-10-20 Richard Biener <rguenther@suse.de> * tree-cfg.c (reinstall_phi_args): Remove. (gimple_split_edge): Remove PHIs around the edge redirection to avoid touching them at all. |
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| config | ||
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