diff options
Diffstat (limited to 'gcc/tree-ssa-pre.c')
| -rw-r--r-- | gcc/tree-ssa-pre.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index a1d7677..bdf48ad7 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -4099,8 +4099,12 @@ eliminate_push_avail (tree op) static tree eliminate_insert (gimple_stmt_iterator *gsi, tree val) { - gimple *stmt = gimple_seq_first_stmt (VN_INFO (val)->expr); - if (!is_gimple_assign (stmt) + /* We can insert a sequence with a single assignment only. */ + gimple_seq stmts = VN_INFO (val)->expr; + if (!gimple_seq_singleton_p (stmts)) + return NULL_TREE; + gassign *stmt = dyn_cast <gassign *> (gimple_seq_first_stmt (stmts)); + if (!stmt || (!CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (stmt)) && gimple_assign_rhs_code (stmt) != VIEW_CONVERT_EXPR && gimple_assign_rhs_code (stmt) != BIT_FIELD_REF @@ -4116,8 +4120,8 @@ eliminate_insert (gimple_stmt_iterator *gsi, tree val) if (!leader) return NULL_TREE; - gimple_seq stmts = NULL; tree res; + stmts = NULL; if (gimple_assign_rhs_code (stmt) == BIT_FIELD_REF) res = gimple_build (&stmts, BIT_FIELD_REF, TREE_TYPE (val), leader, |