diff options
| author | Jason Ekstrand <[email protected]> | 2016-08-31 16:35:21 -0700 |
|---|---|---|
| committer | Jason Ekstrand <[email protected]> | 2016-09-02 11:24:09 -0700 |
| commit | 9a4d76e534920a54c28092311ab6da90c6d7b8d3 (patch) | |
| tree | 20c4b85088b50f54518626ea57be4e38fc96273b | |
| parent | ea7b47596824fd38bd9ad25e49626d8a7d821806 (diff) | |
nir/dead_cf: Don't crash on unreachable after-loop blocks
Signed-off-by: Jason Ekstrand <[email protected]>
Reviewed-by: Connor Abbott <[email protected]>
| -rw-r--r-- | src/compiler/nir/nir_opt_dead_cf.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/compiler/nir/nir_opt_dead_cf.c b/src/compiler/nir/nir_opt_dead_cf.c index 35511246495..1490e6832a2 100644 --- a/src/compiler/nir/nir_opt_dead_cf.c +++ b/src/compiler/nir/nir_opt_dead_cf.c @@ -205,7 +205,8 @@ loop_is_dead(nir_loop *loop) nir_metadata_require(impl, nir_metadata_live_ssa_defs | nir_metadata_dominance); - for (nir_block *cur = after->imm_dom; cur != before; cur = cur->imm_dom) { + for (nir_block *cur = after->imm_dom; cur && cur != before; + cur = cur->imm_dom) { nir_foreach_instr(instr, cur) { if (!nir_foreach_ssa_def(instr, def_not_live_out, after)) return false; |