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| author | Jeff Law <law@redhat.com> | 2011-03-31 07:28:29 -0600 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2011-03-31 07:28:29 -0600 |
| commit | e16b6fd0f7b7da99739f850360d6c86c5b1cba20 (patch) | |
| tree | 9825cddc84870c8f20906bf543d746a838379d92 /gcc/tree-ssa-dce.c | |
| parent | eb1eb91413b50038212d148bf651c40e4d0e32f9 (diff) | |
| download | gcc-e16b6fd0f7b7da99739f850360d6c86c5b1cba20.zip gcc-e16b6fd0f7b7da99739f850360d6c86c5b1cba20.tar.gz gcc-e16b6fd0f7b7da99739f850360d6c86c5b1cba20.tar.bz2 | |
tree-ssa-forwprop.c (forward_propagate_into_cond): Avoid typo potentially leading to null pointer dereference.
* tree-ssa-forwprop.c (forward_propagate_into_cond): Avoid
typo potentially leading to null pointer dereference.
* caller-save.c (new_saved_hard_reg): Eliminate return value.
(setup_save_areas): Corresponding changes to avoid useless
assignments.
* jump.c (reversed_comparison_code_parts): Avoid successive return
statements when REVERSE_CONDITION is defined.
* expr.c (expand_assignment): Avoid useless assignments.
(expand_expr_real_1): Likewise.
(expand_expr_real_2): Avoid useless statements.
* tree-ssa-phiopt.c (minmax_replacement): Avoid useless statement.
* cfgexpand.c (expand_gimple_basic_block): Avoid useless assignment.
* tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Avoid useless
statements.
* stmt.c (expand_expr_stmt): Avoid useless assignment.
From-SVN: r171780
Diffstat (limited to 'gcc/tree-ssa-dce.c')
| -rw-r--r-- | gcc/tree-ssa-dce.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/gcc/tree-ssa-dce.c b/gcc/tree-ssa-dce.c index ce2d41b..c46836da 100644 --- a/gcc/tree-ssa-dce.c +++ b/gcc/tree-ssa-dce.c @@ -271,8 +271,6 @@ mark_operand_necessary (tree op) static void mark_stmt_if_obviously_necessary (gimple stmt, bool aggressive) { - tree lhs = NULL_TREE; - /* With non-call exceptions, we have to assume that all statements could throw. If a statement may throw, it is inherently necessary. */ if (cfun->can_throw_non_call_exceptions && stmt_could_throw_p (stmt)) @@ -311,12 +309,6 @@ mark_stmt_if_obviously_necessary (gimple stmt, bool aggressive) } if (!gimple_call_lhs (stmt)) return; - lhs = gimple_call_lhs (stmt); - /* Fall through */ - - case GIMPLE_ASSIGN: - if (!lhs) - lhs = gimple_assign_lhs (stmt); break; case GIMPLE_DEBUG: |