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Diffstat (limited to 'gcc/tree-ssa-strlen.c')
| -rw-r--r-- | gcc/tree-ssa-strlen.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/tree-ssa-strlen.c b/gcc/tree-ssa-strlen.c index 4b6cfda..5ab3764 100644 --- a/gcc/tree-ssa-strlen.c +++ b/gcc/tree-ssa-strlen.c @@ -1740,6 +1740,25 @@ handle_char_store (gimple_stmt_iterator *gsi) if (si != NULL) si->writable = true; } + else if (idx == 0 + && TREE_CODE (gimple_assign_rhs1 (stmt)) == STRING_CST + && ssaname == NULL_TREE + && TREE_CODE (TREE_TYPE (lhs)) == ARRAY_TYPE) + { + size_t l = strlen (TREE_STRING_POINTER (gimple_assign_rhs1 (stmt))); + HOST_WIDE_INT a = int_size_in_bytes (TREE_TYPE (lhs)); + if (a > 0 && (unsigned HOST_WIDE_INT) a > l) + { + int idx = new_addr_stridx (lhs); + if (idx != 0) + { + si = new_strinfo (build_fold_addr_expr (lhs), idx, + build_int_cst (size_type_node, l)); + set_strinfo (idx, si); + si->dont_invalidate = true; + } + } + } if (si != NULL && initializer_zerop (gimple_assign_rhs1 (stmt))) { |