diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/fold-const.c | 14 |
2 files changed, 17 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 4c75120..6166215 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2019-07-10 Richard Sandiford <richard.sandiford@arm.com> + * fold-const.c (fold_relational_const): Fix folding of + vector-to-scalar NE_EXPRs. + (test_vector_folding): Add more tests. + +2019-07-10 Richard Sandiford <richard.sandiford@arm.com> + PR target/91060 * config/arm/iterators.md (V2DI_ONLY): New mode iterator. * config/arm/neon.md (vec_set<mode>_internal): Add a '@' prefix. diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 0ca472d..edb23fd 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -14026,13 +14026,13 @@ fold_relational_const (enum tree_code code, tree type, tree op0, tree op1) { tree elem0 = VECTOR_CST_ELT (op0, i); tree elem1 = VECTOR_CST_ELT (op1, i); - tree tmp = fold_relational_const (code, type, elem0, elem1); + tree tmp = fold_relational_const (EQ_EXPR, type, elem0, elem1); if (tmp == NULL_TREE) return NULL_TREE; if (integer_zerop (tmp)) - return constant_boolean_node (false, type); + return constant_boolean_node (code == NE_EXPR, type); } - return constant_boolean_node (true, type); + return constant_boolean_node (code == EQ_EXPR, type); } tree_vector_builder elts; if (!elts.new_binary_operation (type, op0, op1, false)) @@ -14803,6 +14803,7 @@ test_vector_folding () tree type = build_vector_type (inner_type, 4); tree zero = build_zero_cst (type); tree one = build_one_cst (type); + tree index = build_index_vector (type, 0, 1); /* Verify equality tests that return a scalar boolean result. */ tree res_type = boolean_type_node; @@ -14810,6 +14811,13 @@ test_vector_folding () ASSERT_TRUE (integer_nonzerop (fold_build2 (EQ_EXPR, res_type, zero, zero))); ASSERT_TRUE (integer_nonzerop (fold_build2 (NE_EXPR, res_type, zero, one))); ASSERT_FALSE (integer_nonzerop (fold_build2 (NE_EXPR, res_type, one, one))); + ASSERT_TRUE (integer_nonzerop (fold_build2 (NE_EXPR, res_type, index, one))); + ASSERT_FALSE (integer_nonzerop (fold_build2 (EQ_EXPR, res_type, + index, one))); + ASSERT_FALSE (integer_nonzerop (fold_build2 (NE_EXPR, res_type, + index, index))); + ASSERT_TRUE (integer_nonzerop (fold_build2 (EQ_EXPR, res_type, + index, index))); } /* Verify folding of VEC_DUPLICATE_EXPRs. */ |