From 7d9767cb8eea0f21c5b23b0183c53840e0433397 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Wed, 9 Dec 2020 23:52:25 +0100 Subject: [PATCH] phiopt: Fix up two_value_replacement BOOLEAN_TYPE handling for Ada [PR98188] For Ada with LTO, boolean_{false,true}_node can be 1-bit precision boolean, while TREE_TYPE (lhs) can be 8-bit precision boolean and thus we can end up with wide_int mismatches. This patch for non-VR_RANGE just use VARYING min/max manually. The min + 1 != max check will then do the rest. 2020-12-09 Jakub Jelinek PR bootstrap/98188 * tree-ssa-phiopt.c (two_value_replacement): Don't special case BOOLEAN_TYPEs for ranges, instead if get_range_info doesn't return VR_RANGE, set min/max to wi::min/max_value. --- gcc/tree-ssa-phiopt.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/gcc/tree-ssa-phiopt.c b/gcc/tree-ssa-phiopt.c index 21b88c0..3d40f07 100644 --- a/gcc/tree-ssa-phiopt.c +++ b/gcc/tree-ssa-phiopt.c @@ -658,13 +658,13 @@ two_value_replacement (basic_block cond_bb, basic_block middle_bb, return false; wide_int min, max; - if (TREE_CODE (TREE_TYPE (lhs)) == BOOLEAN_TYPE) + if (get_range_info (lhs, &min, &max) != VR_RANGE) { - min = wi::to_wide (boolean_false_node); - max = wi::to_wide (boolean_true_node); + int prec = TYPE_PRECISION (TREE_TYPE (lhs)); + signop sgn = TYPE_SIGN (TREE_TYPE (lhs)); + min = wi::min_value (prec, sgn); + max = wi::max_value (prec, sgn); } - else if (get_range_info (lhs, &min, &max) != VR_RANGE) - return false; if (min + 1 != max || (wi::to_wide (rhs) != min && wi::to_wide (rhs) != max)) -- 2.7.4