From 6c4763fa5b55f6e883ed7077b67c6175c2da63d1 Mon Sep 17 00:00:00 2001 From: Aldy Hernandez Date: Mon, 3 Aug 2020 18:30:30 +0200 Subject: [PATCH] Avoid shifting by amounts larger than target int in irange self-tests. gcc/ChangeLog: PR tree-optimization/96430 * range-op.cc (operator_tests): Do not shift by 31 on targets with integer's smaller than 32 bits. --- gcc/range-op.cc | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/gcc/range-op.cc b/gcc/range-op.cc index c62e397..b7b708b 100644 --- a/gcc/range-op.cc +++ b/gcc/range-op.cc @@ -3527,15 +3527,16 @@ operator_tests () } // signed: ~[-1] = OP1 >> 31 - { - widest_irange lhs (INT (-1), INT (-1), VR_ANTI_RANGE); - widest_irange shift (INT (31), INT (31)); - widest_irange op1; - op_rshift.op1_range (op1, integer_type_node, lhs, shift); - widest_irange negatives = range_negatives (integer_type_node); - negatives.intersect (op1); - ASSERT_TRUE (negatives.undefined_p ()); - } + if (TYPE_PRECISION (integer_type_node) > 31) + { + widest_irange lhs (INT (-1), INT (-1), VR_ANTI_RANGE); + widest_irange shift (INT (31), INT (31)); + widest_irange op1; + op_rshift.op1_range (op1, integer_type_node, lhs, shift); + widest_irange negatives = range_negatives (integer_type_node); + negatives.intersect (op1); + ASSERT_TRUE (negatives.undefined_p ()); + } } // Run all of the selftests within this file. -- 2.7.4