diff options
Diffstat (limited to 'gcc/tree-ssa-pre.c')
| -rw-r--r-- | gcc/tree-ssa-pre.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index 67a0513..d1fe72c 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -2879,7 +2879,21 @@ create_expression_by_pieces (basic_block block, pre_expr expr, gimple_seq_discard (forced_stmts); return folded; } - + /* Likewise if we simplified to sth not queued for insertion. */ + bool found = false; + gsi = gsi_start (forced_stmts); + for (; !gsi_end_p (gsi); gsi_next (&gsi)) + { + gimple *stmt = gsi_stmt (gsi); + tree forcedname = gimple_get_lhs (stmt); + if (forcedname == folded) + found = true; + } + if (! found) + { + gimple_seq_discard (forced_stmts); + return folded; + } gcc_assert (TREE_CODE (folded) == SSA_NAME); /* If we have any intermediate expressions to the value sets, add them |