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charset=utf-8 Content-Disposition: inline Hi All, Before my refactoring if the loop->latch was incorrect then find_loop_location skipped checking the edges and would eventually return a dummy location. It turns out that a loop can have loops_state_satisfies_p (LOOPS_HAVE_RECORDED_EXITS) but also not have a latch in which case get_loop_exit_edges traps. This restores the old behavior. Bootstrapped Regtested on x86_64-pc-linux-gnu and no issues. Ok for master? Thanks, Tamar gcc/ChangeLog: PR tree-optimization/111878 * tree-vect-loop-manip.cc (find_loop_location): Skip edges check if latch incorrect. gcc/testsuite/ChangeLog: PR tree-optimization/111878 * gcc.dg/graphite/pr111878.c: New test. --- inline copy of patch -- diff --git a/gcc/testsuite/gcc.dg/graphite/pr111878.c b/gcc/testsuite/gcc.dg/graphite/pr111878.c new file mode 100644 index 0000000000000000000000000000000000000000..6722910062e43c827e94c53b43f106af1848852a --- /dev/null +++ b/gcc/testsuite/gcc.dg/graphite/pr111878.c @@ -0,0 +1,19 @@ +/* { dg-options "-O3 -fgraphite-identity -fsave-optimization-record" } */ + +int long_c2i_ltmp; +int *long_c2i_cont; + +void +long_c2i (long utmp, int i) +{ + int neg = 1; + switch (long_c2i_cont[0]) + case 0: + neg = 0; + for (; i; i++) + if (neg) + utmp |= long_c2i_cont[i] ^ 5; + else + utmp |= long_c2i_cont[i]; + long_c2i_ltmp = utmp; +} diff --git a/gcc/tree-vect-loop-manip.cc b/gcc/tree-vect-loop-manip.cc index b9161274ce401a7307f3e61ad23aa036701190d7..ff188840c1762d0b5fb6655cb93b5a8662b31343 100644 --- a/gcc/tree-vect-loop-manip.cc +++ b/gcc/tree-vect-loop-manip.cc @@ -1792,7 +1792,8 @@ find_loop_location (class loop *loop) if (!loop) return dump_user_location_t (); - if (loops_state_satisfies_p (LOOPS_HAVE_RECORDED_EXITS)) + if (loops_state_satisfies_p (LOOPS_HAVE_RECORDED_EXITS) + && loop->latch != EXIT_BLOCK_PTR_FOR_FN (cfun)) { /* We only care about the loop location, so use any exit with location information. */ -- --tlPxnzsraDHOmHLY Content-Type: text/plain; charset=utf-8 Content-Disposition: attachment; filename="rb18010.patch" diff --git a/gcc/testsuite/gcc.dg/graphite/pr111878.c b/gcc/testsuite/gcc.dg/graphite/pr111878.c new file mode 100644 index 0000000000000000000000000000000000000000..6722910062e43c827e94c53b43f106af1848852a --- /dev/null +++ b/gcc/testsuite/gcc.dg/graphite/pr111878.c @@ -0,0 +1,19 @@ +/* { dg-options "-O3 -fgraphite-identity -fsave-optimization-record" } */ + +int long_c2i_ltmp; +int *long_c2i_cont; + +void +long_c2i (long utmp, int i) +{ + int neg = 1; + switch (long_c2i_cont[0]) + case 0: + neg = 0; + for (; i; i++) + if (neg) + utmp |= long_c2i_cont[i] ^ 5; + else + utmp |= long_c2i_cont[i]; + long_c2i_ltmp = utmp; +} diff --git a/gcc/tree-vect-loop-manip.cc b/gcc/tree-vect-loop-manip.cc index b9161274ce401a7307f3e61ad23aa036701190d7..ff188840c1762d0b5fb6655cb93b5a8662b31343 100644 --- a/gcc/tree-vect-loop-manip.cc +++ b/gcc/tree-vect-loop-manip.cc @@ -1792,7 +1792,8 @@ find_loop_location (class loop *loop) if (!loop) return dump_user_location_t (); - if (loops_state_satisfies_p (LOOPS_HAVE_RECORDED_EXITS)) + if (loops_state_satisfies_p (LOOPS_HAVE_RECORDED_EXITS) + && loop->latch != EXIT_BLOCK_PTR_FOR_FN (cfun)) { /* We only care about the loop location, so use any exit with location information. */ --tlPxnzsraDHOmHLY--