diff options
Diffstat (limited to 'gcc-4.4.3/gcc/tree-ssa-operands.c')
| -rw-r--r-- | gcc-4.4.3/gcc/tree-ssa-operands.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/gcc-4.4.3/gcc/tree-ssa-operands.c b/gcc-4.4.3/gcc/tree-ssa-operands.c index a762f5f9b..0a8e1b7c0 100644 --- a/gcc-4.4.3/gcc/tree-ssa-operands.c +++ b/gcc-4.4.3/gcc/tree-ssa-operands.c @@ -1545,10 +1545,21 @@ get_addr_dereference_operands (gimple stmt, tree *addr, int flags, } else if (TREE_CODE (ptr) == INTEGER_CST) { + tree literal_addr_tag; + /* If a constant is used as a pointer, we can't generate a real operand for it but we mark the statement volatile to prevent optimizations from messing things up. */ gimple_set_has_volatile_ops (stmt, true); + literal_addr_tag = gimple_global_var (cfun); + if (!integer_zerop (ptr) + && literal_addr_tag && !(flags & opf_no_vops)) + { + if (flags & opf_def) + append_vdef (literal_addr_tag); + else + append_vuse (literal_addr_tag); + } return; } else @@ -1647,7 +1658,8 @@ add_call_clobber_ops (gimple stmt, tree callee ATTRIBUTE_UNUSED) { tree var = gimple_global_var (cfun); add_virtual_operand (var, stmt, opf_def, NULL, 0, -1, true); - return; + if (bitmap_empty_p (gimple_call_clobbered_vars (cfun))) + return; } /* Get info for local and module level statics. There is a bit |