diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4_cse.cpp | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_cse.cpp b/src/mesa/drivers/dri/i965/brw_vec4_cse.cpp index 296142b740f..f3a69ed9fb6 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_cse.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_cse.cpp @@ -159,7 +159,7 @@ vec4_visitor::opt_cse_local(bblock_t *block, exec_list *aeb) * If we don't have a temporary already, make one. */ bool no_existing_temp = entry->tmp.file == BAD_FILE; - if (no_existing_temp) { + if (no_existing_temp && !entry->generator->dst.is_null()) { entry->tmp = src_reg(this, glsl_type::float_type); entry->tmp.type = inst->dst.type; entry->tmp.swizzle = BRW_SWIZZLE_XYZW; @@ -170,10 +170,12 @@ vec4_visitor::opt_cse_local(bblock_t *block, exec_list *aeb) } /* dest <- temp */ - assert(inst->dst.type == entry->tmp.type); - vec4_instruction *copy = MOV(inst->dst, entry->tmp); - copy->force_writemask_all = inst->force_writemask_all; - inst->insert_before(copy); + if (!inst->dst.is_null()) { + assert(inst->dst.type == entry->tmp.type); + vec4_instruction *copy = MOV(inst->dst, entry->tmp); + copy->force_writemask_all = inst->force_writemask_all; + inst->insert_before(copy); + } /* Set our iterator so that next time through the loop inst->next * will get the instruction in the basic block after the one we've |