schedule_instructions(bblock_t *) isn't called on blocks with a single
instruction, and since it is the only thing that set cycle_count,
cycle_count would be uninitialized.
A non-empty block with bblock_t::cycle_count == 0 is arguably a bug.
That'll be fixed in the next commit.
---
src/mesa/drivers/dri/i965/brw_cfg.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/mesa/drivers/dri/i965/brw_cfg.cpp
b/src/mesa/drivers/dri/i965/brw_cfg.cpp
index ff2cf6a..fad12ee 100644
--- a/src/mesa/drivers/dri/i965/brw_cfg.cpp
+++ b/src/mesa/drivers/dri/i965/brw_cfg.cpp
@@ -51,7 +51,7 @@ link(void *mem_ctx, bblock_t *block)
}
bblock_t::bblock_t(cfg_t *cfg) :
- cfg(cfg), idom(NULL), start_ip(0), end_ip(0), num(0)
+ cfg(cfg), idom(NULL), start_ip(0), end_ip(0), num(0), cycle_count(0)
{
instructions.make_empty();
parents.make_empty();
--
2.7.3
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