diff options
| author | Richard Guenther <rguenth@gcc.gnu.org> | 2005-05-26 21:07:38 +0000 |
|---|---|---|
| committer | Jeff Law <law@redhat.com> | 2005-05-26 21:07:38 +0000 |
| commit | cf1151a6bdd934d38ac249f5d75efb169f7d5fca (patch) | |
| tree | f756e596fcc002b13c70d53236c7e41461b341c7 /gcc/tree-ssa-forwprop.c | |
| parent | 870b8ac141320e873b743e1fee0efe6f428f22e2 (diff) | |
* tree-ssa-forwprop.c (forward_propagate_addr_expr):
See through ADDR_EXPR in finding place to propagate into.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@100223 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-forwprop.c')
| -rw-r--r-- | gcc/tree-ssa-forwprop.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/tree-ssa-forwprop.c b/gcc/tree-ssa-forwprop.c index 17da0f1228c..de85b7cf9c6 100644 --- a/gcc/tree-ssa-forwprop.c +++ b/gcc/tree-ssa-forwprop.c @@ -560,7 +560,8 @@ forward_propagate_addr_expr (tree stmt) if (bb_for_stmt (use_stmt)->loop_depth > stmt_loop_depth) return false; - /* Strip away any outer COMPONENT_REF/ARRAY_REF nodes from the LHS. */ + /* Strip away any outer COMPONENT_REF/ARRAY_REF nodes from the LHS. + ADDR_EXPR will not appear on the LHS. */ lhs = TREE_OPERAND (use_stmt, 0); while (TREE_CODE (lhs) == COMPONENT_REF || TREE_CODE (lhs) == ARRAY_REF) lhs = TREE_OPERAND (lhs, 0); @@ -591,9 +592,12 @@ forward_propagate_addr_expr (tree stmt) return true; } - /* Strip away any outer COMPONENT_REF/ARRAY_REF nodes from the RHS. */ + /* Strip away any outer COMPONENT_REF, ARRAY_REF or ADDR_EXPR + nodes from the RHS. */ rhs = TREE_OPERAND (use_stmt, 1); - while (TREE_CODE (rhs) == COMPONENT_REF || TREE_CODE (rhs) == ARRAY_REF) + while (TREE_CODE (rhs) == COMPONENT_REF + || TREE_CODE (rhs) == ARRAY_REF + || TREE_CODE (rhs) == ADDR_EXPR) rhs = TREE_OPERAND (rhs, 0); /* Now see if the RHS node is an INDIRECT_REF using NAME. If so, |