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Diffstat (limited to 'gcc/tree-ssa-threadbackward.c')
| -rw-r--r-- | gcc/tree-ssa-threadbackward.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/tree-ssa-threadbackward.c b/gcc/tree-ssa-threadbackward.c index 8c99f6f..8d8aa30 100644 --- a/gcc/tree-ssa-threadbackward.c +++ b/gcc/tree-ssa-threadbackward.c @@ -99,6 +99,11 @@ fsm_find_control_statement_thread_paths (tree name, vec<basic_block, va_gc> *&path, bool seen_loop_phi) { + /* If NAME appears in an abnormal PHI, then don't try to trace its + value back through PHI nodes. */ + if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (name)) + return; + gimple *def_stmt = SSA_NAME_DEF_STMT (name); basic_block var_bb = gimple_bb (def_stmt); |