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Diffstat (limited to 'gcc/tree-ssa-dce.c')
| -rw-r--r-- | gcc/tree-ssa-dce.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/tree-ssa-dce.c b/gcc/tree-ssa-dce.c index 9597b57..bf69bbf 100644 --- a/gcc/tree-ssa-dce.c +++ b/gcc/tree-ssa-dce.c @@ -490,6 +490,7 @@ find_obviously_necessary_stmts (struct edge_list *el) static bool ref_may_be_aliased (tree ref) { + gcc_assert (TREE_CODE (ref) != WITH_SIZE_EXPR); while (handled_component_p (ref)) ref = TREE_OPERAND (ref, 0); if (TREE_CODE (ref) == MEM_REF @@ -850,6 +851,8 @@ propagate_necessity (struct edge_list *el) if (TREE_CODE (arg) == SSA_NAME || is_gimple_min_invariant (arg)) continue; + if (TREE_CODE (arg) == WITH_SIZE_EXPR) + arg = TREE_OPERAND (arg, 0); if (!ref_may_be_aliased (arg)) mark_aliased_reaching_defs_necessary (stmt, arg); } |