diff options
| author | Kenneth Graunke <[email protected]> | 2016-03-30 12:00:02 -0700 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2016-04-04 14:34:40 -0700 |
| commit | da5d08707bf07c76b6a1851f3a36bb7c1f8d4d4b (patch) | |
| tree | 5aef844868cae28379d4e5f2f11ca5e4c6942098 /src/mesa | |
| parent | 9486614938035f6bec746d207a9cf79a7def0724 (diff) | |
i965: Fix invalid pointer read in dead_control_flow_eliminate().
There may not be a previous block. In this case, there's no real work
to do, so just continue on to the next one.
v2: Update for bblock->prev() API change.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_dead_control_flow.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_dead_control_flow.cpp b/src/mesa/drivers/dri/i965/brw_dead_control_flow.cpp index 2c1abaf255c..114dc6cb212 100644 --- a/src/mesa/drivers/dri/i965/brw_dead_control_flow.cpp +++ b/src/mesa/drivers/dri/i965/brw_dead_control_flow.cpp @@ -42,6 +42,10 @@ dead_control_flow_eliminate(backend_shader *s) foreach_block_safe (block, s->cfg) { bblock_t *prev_block = block->prev(); + + if (!prev_block) + continue; + backend_instruction *const inst = block->start(); backend_instruction *const prev_inst = prev_block->end(); |