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Following http://gcc.gnu.org/ml/gcc/2004-11/msg00332.html: Here is the patch that removes the code that directly writes PHI_ARG_EDGE in the vectorizer, thereby blocking Kazu's patch ( http://gcc.gnu.org/ml/gcc/2004-11/msg00260.html). That code also has a quadratic phi search, which is removed by this patch, relying on the fact that the phis are organized in the same order (we use phi_reverese for that). Bootstrapped and tested on ppc-darwin and i686-pc-linux-gnu. ok for mainline? thanks, dorit Changelog: * tree-vectorizer.c (update_phi_nodes_for_guard): Call reverse_phis. (vect_update_ivs_after_vectorizer): Update function documentation. Avoid quadratic behavior and direct write to PHI_ARG_DEF. Patch: (See attached file: phiedge.nov11)
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