---
src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp
b/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp
index da6da16..e48a4c6 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp
@@ -881,6 +881,14 @@ fs_visitor::spill_reg(int spill_reg)
inst->dst.reg = spill_src.reg;
inst->dst.reg_offset = 0;
+ /* If we're immediately spilling the register, we should not use
+ * destination dependency hints. Doing so will cause the GPU do
+ * try to read and write the register at the same time and may
+ * hang the GPU.
+ */
+ inst->no_dd_clear = false;
+ inst->no_dd_check = false;
+
/* If our write is going to affect just part of the
* inst->regs_written(), then we need to unspill the destination
* since we write back out all of the regs_written().
--
2.1.0
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