diff options
| -rw-r--r-- | gcc/gimple-ssa-store-merging.c | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr95854.c | 20 |
2 files changed, 24 insertions, 0 deletions
diff --git a/gcc/gimple-ssa-store-merging.c b/gcc/gimple-ssa-store-merging.c index 3ab6141..5cb7101 100644 --- a/gcc/gimple-ssa-store-merging.c +++ b/gcc/gimple-ssa-store-merging.c @@ -598,6 +598,10 @@ find_bswap_or_nop_1 (gimple *stmt, struct symbolic_number *n, int limit) if (TREE_CODE (rhs1) == BIT_FIELD_REF && TREE_CODE (TREE_OPERAND (rhs1, 0)) == SSA_NAME) { + if (!tree_fits_uhwi_p (TREE_OPERAND (rhs1, 1)) + || !tree_fits_uhwi_p (TREE_OPERAND (rhs1, 2))) + return NULL; + unsigned HOST_WIDE_INT bitsize = tree_to_uhwi (TREE_OPERAND (rhs1, 1)); unsigned HOST_WIDE_INT bitpos = tree_to_uhwi (TREE_OPERAND (rhs1, 2)); if (bitpos % BITS_PER_UNIT == 0 diff --git a/gcc/testsuite/gcc.dg/pr95854.c b/gcc/testsuite/gcc.dg/pr95854.c new file mode 100644 index 0000000..db45d6a --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr95854.c @@ -0,0 +1,20 @@ +/* { dg-do compile } */ +/* { dg-options "-O3 -fno-vect-cost-model -fno-tree-scev-cprop -ftracer" } */ +/* { dg-additional-options "-march=armv8.5-a+sve2" { target aarch64*-*-* } } */ + +extern void abort (void); +int c, d; +int main() +{ + int e[] = {4, 4, 4, 4, 4, 4, 4, 4, 4}; + d = 8; + for (; d; d--) + for (int a = 0; a <= 8; a++) + { + c = e[1]; + e[d] = 0; + } + if (c != 0) + abort (); + return 0; +} |