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| author | Richard Guenther <rguenth@gcc.gnu.org> | 2005-05-26 21:07:38 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2005-05-26 15:07:38 -0600 |
| commit | 450c300706be35ba449d1a9d834e108ddcc3e74c (patch) | |
| tree | f756e596fcc002b13c70d53236c7e41461b341c7 | |
| parent | a04323f4cbc780f714ee126c1d7b3953b0c04e44 (diff) | |
| download | gcc-450c300706be35ba449d1a9d834e108ddcc3e74c.zip gcc-450c300706be35ba449d1a9d834e108ddcc3e74c.tar.gz gcc-450c300706be35ba449d1a9d834e108ddcc3e74c.tar.bz2 | |
tree-ssa-forwprop.c (forward_propagate_addr_expr): See through ADDR_EXPR in finding place to propagate into.
* tree-ssa-forwprop.c (forward_propagate_addr_expr):
See through ADDR_EXPR in finding place to propagate into.
From-SVN: r100223
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-ssa-forwprop.c | 10 |
2 files changed, 12 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index bc7e8f9..1657e7d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2005-05-26 Richard Guenther <rguenth@gcc.gnu.org> + + * tree-ssa-forwprop.c (forward_propagate_addr_expr): + See through ADDR_EXPR in finding place to propagate into. + 2005-05-26 Kazu Hirata <kazu@cs.umass.edu> * c-common.c, c-parser.c, cfgbuild.c, cfghooks.c, cfghooks.h, diff --git a/gcc/tree-ssa-forwprop.c b/gcc/tree-ssa-forwprop.c index 17da0f1..de85b7c 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, |