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Diffstat (limited to 'gcc/ipa-polymorphic-call.c')
| -rw-r--r-- | gcc/ipa-polymorphic-call.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/ipa-polymorphic-call.c b/gcc/ipa-polymorphic-call.c index aaa549e..13cc7f6 100644 --- a/gcc/ipa-polymorphic-call.c +++ b/gcc/ipa-polymorphic-call.c @@ -835,7 +835,10 @@ walk_ssa_copies (tree op, hash_set<tree> **global_visited = NULL) { gimple phi = SSA_NAME_DEF_STMT (op); - if (gimple_phi_num_args (phi) > 2) + if (gimple_phi_num_args (phi) > 2 + /* We can be called while cleaning up the CFG and can + have empty PHIs about to be removed. */ + || gimple_phi_num_args (phi) == 0) goto done; if (gimple_phi_num_args (phi) == 1) op = gimple_phi_arg_def (phi, 0); |