diff --git a/gcc/match.pd b/gcc/match.pd index a05d4f07ab5b6f89fe09312765277df30aa8d8f2..a405c9ff6f82fa2c440f3ee61fab8bab90179468 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -2188,8 +2188,14 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) /* A conversion from an zero_one_valued_p is still a [0,1]. This is useful when the range of a variable is not known */ +/* Note this matches can't be recursive because of the way VN handles + nop conversions being equivalent and then recursive between them. */ (match zero_one_valued_p - (convert@0 zero_one_valued_p)) + (convert@0 @1) + (if (INTEGRAL_TYPE_P (TREE_TYPE (@1)) + && (TYPE_UNSIGNED (TREE_TYPE (@1)) + || TYPE_PRECISION (TREE_TYPE (@1)) > 1) + && wi::leu_p (tree_nonzero_bits (@1), 1)))) /* Transform { 0 or 1 } * { 0 or 1 } into { 0 or 1 } & { 0 or 1 }. */ (simplify diff --git a/gcc/testsuite/gcc.c-torture/compile/pr111435-1.c b/gcc/testsuite/gcc.c-torture/compile/pr111435-1.c new file mode 100644 index 0000000000000000000000000000000000000000..afa84dd59ddea2fb4ad08a3df868fdcc937e8b08 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr111435-1.c @@ -0,0 +1,18 @@ +/* { dg-options "-fexceptions -fno-early-inlining" } */ +/* { dg-require-effective-target exceptions } */ + +void find_slot_with_hash(const int *); + +void put(const int *k, const int *) { + find_slot_with_hash(k); +} +unsigned len(); +int *address(); +void h(int header, int **bounds) { + if (!*bounds) + return; + unsigned t = *bounds ? len() : 0; + int queue_index = t; + address()[(unsigned)queue_index] = 0; + put(&header, &queue_index); +}