Switch statements introduce a bogus loop with an unconditional break at
the end of the loop, just before the while...so the while is unreachable
and has no immediate dominator.
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/mesa/drivers/dri/i965/brw_cfg.cpp | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/mesa/drivers/dri/i965/brw_cfg.cpp
b/src/mesa/drivers/dri/i965/brw_cfg.cpp
index 91d53ef..97e0624 100644
--- a/src/mesa/drivers/dri/i965/brw_cfg.cpp
+++ b/src/mesa/drivers/dri/i965/brw_cfg.cpp
@@ -422,7 +422,11 @@ cfg_t::dump(backend_shader *s)
calculate_idom();
foreach_block (block, this) {
- fprintf(stderr, "START B%d IDOM(B%d)", block->num, block->idom->num);
+ if (block->idom)
+ fprintf(stderr, "START B%d IDOM(B%d)", block->num, block->idom->num);
+ else
+ fprintf(stderr, "START B%d IDOM(NONE?!)", block->num);
+
foreach_list_typed(bblock_link, link, link, &block->parents) {
fprintf(stderr, " <-B%d",
link->block->num);
--
2.5.3
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