https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60832
--- Comment #2 from Manuel López-Ibáñez <manu at gcc dot gnu.org> --- Author: manu Date: Mon Sep 21 10:11:24 2015 New Revision: 227964 URL: https://gcc.gnu.org/viewcvs?rev=227964&root=gcc&view=rev Log: [PR middle-end/60832] Do not convert widest_int to tree just for printing it. In do_warn_aggressive_loop_optimizations, we convert to a tree just to print a widest_int. Apart from overly complicated, this results in printing '3u' instead of just '3'. Unfortunately, adding a printf-like conversion specifier would require making pretty-print.c link with wide-int.cc, which will include a lot of new dependencies into several other programs (gcov-tool for example). It would be possible to add the conversion specifier to every FE pretty-printer, but this still would require updating c-format.c, which is far from trivial. A simpler approach is to convert to a string rather than to a tree. In addition, "iteration 3 invokes undefined behavior within this loop" seems to me clearer than "iteration 3 invokes undefined behavior; containing loop". gcc/testsuite/ChangeLog: 2015-09-21 Manuel López-Ibáñez <m...@gcc.gnu.org> PR middle-end/60832 * gcc.dg/pr53265.c: Update. gcc/ChangeLog: 2015-09-21 Manuel López-Ibáñez <m...@gcc.gnu.org> PR middle-end/60832 * tree-ssa-loop-niter.c (do_warn_aggressive_loop_optimizations): Print i_bound without converting it to a tree. Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/pr53265.c trunk/gcc/tree-ssa-loop-niter.c
