From c45af542bdbfa069cbc8318373b5c199de168969 Mon Sep 17 00:00:00 2001 From: Daniel Berlin Date: Fri, 10 Jun 2005 21:34:07 +0000 Subject: [PATCH] lambda-code.c (replace_uses_equiv_to_x_with_y): Check step and access function against chrec_dont_know. 2005-06-10 Daniel Berlin * lambda-code.c (replace_uses_equiv_to_x_with_y): Check step and access function against chrec_dont_know. From-SVN: r100831 --- gcc/ChangeLog | 7 ++++++- gcc/lambda-code.c | 4 ++-- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5ec8206ef41..8b204a5983f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,7 +1,12 @@ +2005-06-10 Daniel Berlin + + * lambda-code.c (replace_uses_equiv_to_x_with_y): Check step + and access function against chrec_dont_know. + 2005-06-10 Daniel Berlin * lambda-code.c (replace_uses_of_x_with_y): Renamed and rewritten - slightly. + slightly. (exit_phi_for_loop_p): New function. (can_put_in_inner_loop): Ditto. (can_convert_to_perfect_nest): Ditto. diff --git a/gcc/lambda-code.c b/gcc/lambda-code.c index cedc8cd129f..6dbbe6d8b8b 100644 --- a/gcc/lambda-code.c +++ b/gcc/lambda-code.c @@ -2182,9 +2182,9 @@ replace_uses_equiv_to_x_with_y (struct loop *loop, tree stmt, tree x, access_fn = instantiate_parameters (loop, analyze_scalar_evolution (loop, use)); - if (access_fn != NULL_TREE) + if (access_fn != NULL_TREE && access_fn != chrec_dont_know) step = evolution_part_in_loop_num (access_fn, loop->num); - if ((step && int_cst_value (step) == xstep) + if ((step && step != chrec_dont_know && int_cst_value (step) == xstep) || USE_FROM_PTR (use_p) == x) SET_USE (use_p, y); } -- 2.30.2