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| author | Richard Guenther <rguenther@suse.de> | 2006-01-11 19:44:57 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2006-01-11 19:44:57 +0000 |
| commit | a40d3497d07afb3419c8b62322029d6af579b52f (patch) | |
| tree | a9fcef8a8a45e353d52dccac8670eeec074c2021 /gcc/tree-ssa-forwprop.c | |
| parent | 68f9b84438d3ad84f1baf6413723a205e6a49b07 (diff) | |
| download | gcc-a40d3497d07afb3419c8b62322029d6af579b52f.zip gcc-a40d3497d07afb3419c8b62322029d6af579b52f.tar.gz gcc-a40d3497d07afb3419c8b62322029d6af579b52f.tar.bz2 | |
re PR tree-optimization/25734 (ice for legal kernel code with -Os)
2006-01-11 Richard Guenther <rguenther@suse.de>
PR tree-optimization/25734
* tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Do not
stop propagation after successful propagation to the LHS.
* gcc.dg/tree-ssa/pr25734.c: New testcase.
From-SVN: r109598
Diffstat (limited to 'gcc/tree-ssa-forwprop.c')
| -rw-r--r-- | gcc/tree-ssa-forwprop.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/gcc/tree-ssa-forwprop.c b/gcc/tree-ssa-forwprop.c index 2f857dc..892edde 100644 --- a/gcc/tree-ssa-forwprop.c +++ b/gcc/tree-ssa-forwprop.c @@ -686,7 +686,6 @@ forward_propagate_addr_expr_1 (tree stmt, tree use_stmt) TREE_OPERAND (lhs, 0) = unshare_expr (TREE_OPERAND (stmt, 1)); fold_stmt_inplace (use_stmt); tidy_after_forward_propagate_addr (use_stmt); - return true; } /* Trivial case. The use statement could be a trivial copy. We @@ -696,7 +695,7 @@ forward_propagate_addr_expr_1 (tree stmt, tree use_stmt) we can catch some cascading effects, ie the single use is in a copy, and the copy is used later by a single INDIRECT_REF for example. */ - if (TREE_CODE (lhs) == SSA_NAME && TREE_OPERAND (use_stmt, 1) == name) + else if (TREE_CODE (lhs) == SSA_NAME && TREE_OPERAND (use_stmt, 1) == name) { TREE_OPERAND (use_stmt, 1) = unshare_expr (TREE_OPERAND (stmt, 1)); tidy_after_forward_propagate_addr (use_stmt); |