diff options
Diffstat (limited to 'gcc/tree-vrp.c')
| -rw-r--r-- | gcc/tree-vrp.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c index 156a58f..4cd2f2a 100644 --- a/gcc/tree-vrp.c +++ b/gcc/tree-vrp.c @@ -1038,7 +1038,7 @@ gimple_assign_nonzero_warnv_p (gimple stmt, bool *strict_overflow_p) } } -/* Return true if STMT is know to to compute a non-zero value. +/* Return true if STMT is known to compute a non-zero value. If the return value is based on the assumption that signed overflow is undefined, set *STRICT_OVERFLOW_P to true; otherwise, don't change *STRICT_OVERFLOW_P.*/ @@ -1058,6 +1058,10 @@ gimple_stmt_nonzero_warnv_p (gimple stmt, bool *strict_overflow_p) && DECL_IS_OPERATOR_NEW (fndecl) && !TREE_NOTHROW (fndecl)) return true; + if (flag_delete_null_pointer_checks && + lookup_attribute ("returns_nonnull", + TYPE_ATTRIBUTES (gimple_call_fntype (stmt)))) + return true; return gimple_alloca_call_p (stmt); } default: @@ -6536,10 +6540,7 @@ stmt_interesting_for_vrp (gimple stmt) if (lhs && TREE_CODE (lhs) == SSA_NAME && (INTEGRAL_TYPE_P (TREE_TYPE (lhs)) || POINTER_TYPE_P (TREE_TYPE (lhs))) - && ((is_gimple_call (stmt) - && gimple_call_fndecl (stmt) != NULL_TREE - && (DECL_BUILT_IN (gimple_call_fndecl (stmt)) - || DECL_IS_OPERATOR_NEW (gimple_call_fndecl (stmt)))) + && (is_gimple_call (stmt) || !gimple_vuse (stmt))) return true; } |